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Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001// SPDX-License-Identifier: GPL-2.0
Ingo Molnar0a02ad92009-09-11 12:12:54 +02002#include "builtin.h"
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02003#include "perf.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +02004
5#include "util/util.h"
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02006#include "util/evlist.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +02007#include "util/cache.h"
Arnaldo Carvalho de Meloe3f42602011-11-16 17:02:54 -02008#include "util/evsel.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +02009#include "util/symbol.h"
10#include "util/thread.h"
11#include "util/header.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020012#include "util/session.h"
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020013#include "util/tool.h"
Yann Droneaud57480d22014-06-30 22:28:47 +020014#include "util/cloexec.h"
Jiri Olsaa151a372016-04-12 15:29:29 +020015#include "util/thread_map.h"
Jiri Olsa8cd91192016-04-12 15:29:27 +020016#include "util/color.h"
David Ahern49394a22016-11-16 15:06:29 +090017#include "util/stat.h"
David Ahern6c973c92016-11-16 15:06:32 +090018#include "util/callchain.h"
David Ahern853b7402016-11-29 10:15:44 -070019#include "util/time-utils.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +020020
Josh Poimboeuf4b6ab942015-12-15 09:39:39 -060021#include <subcmd/parse-options.h>
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020022#include "util/trace-event.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +020023
Ingo Molnar0a02ad92009-09-11 12:12:54 +020024#include "util/debug.h"
25
Arnaldo Carvalho de Melo877a7a12017-04-17 11:39:06 -030026#include <linux/kernel.h>
David Ahern49394a22016-11-16 15:06:29 +090027#include <linux/log2.h>
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020028#include <sys/prctl.h>
Markus Trippelsdorf7b78f132012-04-04 10:45:27 +020029#include <sys/resource.h>
Arnaldo Carvalho de Melofd20e812017-04-17 15:23:08 -030030#include <inttypes.h>
Ingo Molnar0a02ad92009-09-11 12:12:54 +020031
Arnaldo Carvalho de Meloa43783a2017-04-18 10:46:11 -030032#include <errno.h>
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020033#include <semaphore.h>
34#include <pthread.h>
35#include <math.h>
Yunlong Songcb06ac22015-03-31 21:46:30 +080036#include <api/fs/fs.h>
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -030037#include <linux/time64.h>
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +020038
Arnaldo Carvalho de Melo3d689ed2017-04-17 16:10:49 -030039#include "sane_ctype.h"
40
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020041#define PR_SET_NAME 15 /* Set process name */
42#define MAX_CPUS 4096
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020043#define COMM_LEN 20
44#define SYM_LEN 129
Yunlong Songa35e27d2015-03-31 21:46:29 +080045#define MAX_PID 1024000
Ingo Molnarec156762009-09-11 12:12:54 +020046
mingo39aeb522009-09-14 20:04:48 +020047struct sched_atom;
Ingo Molnarec156762009-09-11 12:12:54 +020048
49struct task_desc {
50 unsigned long nr;
51 unsigned long pid;
52 char comm[COMM_LEN];
53
54 unsigned long nr_events;
55 unsigned long curr_event;
mingo39aeb522009-09-14 20:04:48 +020056 struct sched_atom **atoms;
Ingo Molnarec156762009-09-11 12:12:54 +020057
58 pthread_t thread;
59 sem_t sleep_sem;
60
61 sem_t ready_for_work;
62 sem_t work_done_sem;
63
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020064 u64 cpu_usage;
Ingo Molnarec156762009-09-11 12:12:54 +020065};
66
67enum sched_event_type {
68 SCHED_EVENT_RUN,
69 SCHED_EVENT_SLEEP,
70 SCHED_EVENT_WAKEUP,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +020071 SCHED_EVENT_MIGRATION,
Ingo Molnarec156762009-09-11 12:12:54 +020072};
73
mingo39aeb522009-09-14 20:04:48 +020074struct sched_atom {
Ingo Molnarec156762009-09-11 12:12:54 +020075 enum sched_event_type type;
Arnaldo Carvalho de Meloeed05fe2010-04-05 12:53:45 -030076 int specific_wait;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020077 u64 timestamp;
78 u64 duration;
Ingo Molnarec156762009-09-11 12:12:54 +020079 unsigned long nr;
Ingo Molnarec156762009-09-11 12:12:54 +020080 sem_t *wait_sem;
81 struct task_desc *wakee;
82};
83
Dongshenge936e8e2014-05-05 16:05:54 +090084#define TASK_STATE_TO_CHAR_STR "RSDTtZXxKWP"
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020085
Namhyung Kim941bdea2017-01-13 19:45:21 +090086/* task state bitmask, copied from include/linux/sched.h */
87#define TASK_RUNNING 0
88#define TASK_INTERRUPTIBLE 1
89#define TASK_UNINTERRUPTIBLE 2
90#define __TASK_STOPPED 4
91#define __TASK_TRACED 8
92/* in tsk->exit_state */
93#define EXIT_DEAD 16
94#define EXIT_ZOMBIE 32
95#define EXIT_TRACE (EXIT_ZOMBIE | EXIT_DEAD)
96/* in tsk->state again */
97#define TASK_DEAD 64
98#define TASK_WAKEKILL 128
99#define TASK_WAKING 256
100#define TASK_PARKED 512
101
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200102enum thread_state {
103 THREAD_SLEEPING = 0,
104 THREAD_WAIT_CPU,
105 THREAD_SCHED_IN,
106 THREAD_IGNORE
107};
108
109struct work_atom {
110 struct list_head list;
111 enum thread_state state;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +0200112 u64 sched_out_time;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200113 u64 wake_up_time;
114 u64 sched_in_time;
115 u64 runtime;
116};
117
mingo39aeb522009-09-14 20:04:48 +0200118struct work_atoms {
119 struct list_head work_list;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200120 struct thread *thread;
121 struct rb_node node;
122 u64 max_lat;
Frederic Weisbecker3786310a2009-12-09 21:40:08 +0100123 u64 max_lat_at;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200124 u64 total_lat;
125 u64 nb_atoms;
126 u64 total_runtime;
Josef Bacik2f80dd42015-05-22 09:18:40 -0400127 int num_merged;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200128};
129
mingo39aeb522009-09-14 20:04:48 +0200130typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200131
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300132struct perf_sched;
133
134struct trace_sched_handler {
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300135 int (*switch_event)(struct perf_sched *sched, struct perf_evsel *evsel,
136 struct perf_sample *sample, struct machine *machine);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300137
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300138 int (*runtime_event)(struct perf_sched *sched, struct perf_evsel *evsel,
139 struct perf_sample *sample, struct machine *machine);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300140
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300141 int (*wakeup_event)(struct perf_sched *sched, struct perf_evsel *evsel,
142 struct perf_sample *sample, struct machine *machine);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300143
David Aherncb627502013-08-07 22:50:47 -0400144 /* PERF_RECORD_FORK event, not sched_process_fork tracepoint */
145 int (*fork_event)(struct perf_sched *sched, union perf_event *event,
146 struct machine *machine);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300147
148 int (*migrate_task_event)(struct perf_sched *sched,
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300149 struct perf_evsel *evsel,
150 struct perf_sample *sample,
151 struct machine *machine);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300152};
153
Jiri Olsaa151a372016-04-12 15:29:29 +0200154#define COLOR_PIDS PERF_COLOR_BLUE
Jiri Olsacf294f22016-04-12 15:29:30 +0200155#define COLOR_CPUS PERF_COLOR_BG_RED
Jiri Olsaa151a372016-04-12 15:29:29 +0200156
Jiri Olsa99623c62016-04-12 15:29:26 +0200157struct perf_sched_map {
158 DECLARE_BITMAP(comp_cpus_mask, MAX_CPUS);
159 int *comp_cpus;
160 bool comp;
Jiri Olsaa151a372016-04-12 15:29:29 +0200161 struct thread_map *color_pids;
162 const char *color_pids_str;
Jiri Olsacf294f22016-04-12 15:29:30 +0200163 struct cpu_map *color_cpus;
164 const char *color_cpus_str;
Jiri Olsa73643bb2016-04-12 15:29:31 +0200165 struct cpu_map *cpus;
166 const char *cpus_str;
Jiri Olsa99623c62016-04-12 15:29:26 +0200167};
168
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300169struct perf_sched {
170 struct perf_tool tool;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300171 const char *sort_order;
172 unsigned long nr_tasks;
Yunlong Songcb06ac22015-03-31 21:46:30 +0800173 struct task_desc **pid_to_task;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300174 struct task_desc **tasks;
175 const struct trace_sched_handler *tp_handler;
176 pthread_mutex_t start_work_mutex;
177 pthread_mutex_t work_done_wait_mutex;
178 int profile_cpu;
179/*
180 * Track the current task - that way we can know whether there's any
181 * weird events, such as a task being switched away that is not current.
182 */
183 int max_cpu;
184 u32 curr_pid[MAX_CPUS];
185 struct thread *curr_thread[MAX_CPUS];
186 char next_shortname1;
187 char next_shortname2;
188 unsigned int replay_repeat;
189 unsigned long nr_run_events;
190 unsigned long nr_sleep_events;
191 unsigned long nr_wakeup_events;
192 unsigned long nr_sleep_corrections;
193 unsigned long nr_run_events_optimized;
194 unsigned long targetless_wakeups;
195 unsigned long multitarget_wakeups;
196 unsigned long nr_runs;
197 unsigned long nr_timestamps;
198 unsigned long nr_unordered_timestamps;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300199 unsigned long nr_context_switch_bugs;
200 unsigned long nr_events;
201 unsigned long nr_lost_chunks;
202 unsigned long nr_lost_events;
203 u64 run_measurement_overhead;
204 u64 sleep_measurement_overhead;
205 u64 start_time;
206 u64 cpu_usage;
207 u64 runavg_cpu_usage;
208 u64 parent_cpu_usage;
209 u64 runavg_parent_cpu_usage;
210 u64 sum_runtime;
211 u64 sum_fluct;
212 u64 run_avg;
213 u64 all_runtime;
214 u64 all_count;
215 u64 cpu_last_switched[MAX_CPUS];
Josef Bacik2f80dd42015-05-22 09:18:40 -0400216 struct rb_root atom_root, sorted_atom_root, merged_atom_root;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300217 struct list_head sort_list, cmp_pid;
Yunlong Song939cda52015-03-31 21:46:34 +0800218 bool force;
Josef Bacik2f80dd42015-05-22 09:18:40 -0400219 bool skip_merge;
Jiri Olsa99623c62016-04-12 15:29:26 +0200220 struct perf_sched_map map;
David Ahern52df1382016-11-16 15:06:30 +0900221
222 /* options for timehist command */
223 bool summary;
224 bool summary_only;
Namhyung Kim699b5b92016-12-08 23:47:52 +0900225 bool idle_hist;
David Ahern6c973c92016-11-16 15:06:32 +0900226 bool show_callchain;
227 unsigned int max_stack;
David Aherna407b062016-11-16 15:06:33 +0900228 bool show_cpu_visual;
David Ahernfc1469f2016-11-16 15:06:31 +0900229 bool show_wakeups;
Brendan Gregg292c4a82017-03-14 01:56:29 +0000230 bool show_next;
David Ahern350f54f2016-11-25 09:28:41 -0700231 bool show_migrations;
Namhyung Kim414e0502017-01-13 19:45:22 +0900232 bool show_state;
David Ahern52df1382016-11-16 15:06:30 +0900233 u64 skipped_samples;
David Ahern853b7402016-11-29 10:15:44 -0700234 const char *time_str;
235 struct perf_time_interval ptime;
Namhyung Kim9396c9c2016-12-22 15:03:50 +0900236 struct perf_time_interval hist_time;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300237};
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200238
David Ahern49394a22016-11-16 15:06:29 +0900239/* per thread run time data */
240struct thread_runtime {
241 u64 last_time; /* time of previous sched in/out event */
242 u64 dt_run; /* run time */
Namhyung Kim941bdea2017-01-13 19:45:21 +0900243 u64 dt_sleep; /* time between CPU access by sleep (off cpu) */
244 u64 dt_iowait; /* time between CPU access by iowait (off cpu) */
245 u64 dt_preempt; /* time between CPU access by preempt (off cpu) */
David Ahern49394a22016-11-16 15:06:29 +0900246 u64 dt_delay; /* time between wakeup and sched-in */
247 u64 ready_to_run; /* time of wakeup */
248
249 struct stats run_stats;
250 u64 total_run_time;
Namhyung Kim587782c2017-01-13 19:45:23 +0900251 u64 total_sleep_time;
252 u64 total_iowait_time;
253 u64 total_preempt_time;
254 u64 total_delay_time;
David Ahern350f54f2016-11-25 09:28:41 -0700255
Namhyung Kim941bdea2017-01-13 19:45:21 +0900256 int last_state;
David Ahern350f54f2016-11-25 09:28:41 -0700257 u64 migrations;
David Ahern49394a22016-11-16 15:06:29 +0900258};
259
260/* per event run time data */
261struct evsel_runtime {
262 u64 *last_time; /* time this event was last seen per cpu */
263 u32 ncpu; /* highest cpu slot allocated */
264};
265
Namhyung Kim3bc2fa92016-12-08 23:47:51 +0900266/* per cpu idle time data */
267struct idle_thread_runtime {
268 struct thread_runtime tr;
269 struct thread *last_thread;
270 struct rb_root sorted_root;
271 struct callchain_root callchain;
272 struct callchain_cursor cursor;
273};
274
David Ahern49394a22016-11-16 15:06:29 +0900275/* track idle times per cpu */
276static struct thread **idle_threads;
277static int idle_max_cpu;
278static char idle_comm[] = "<idle>";
279
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200280static u64 get_nsecs(void)
281{
282 struct timespec ts;
283
284 clock_gettime(CLOCK_MONOTONIC, &ts);
285
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -0300286 return ts.tv_sec * NSEC_PER_SEC + ts.tv_nsec;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200287}
288
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300289static void burn_nsecs(struct perf_sched *sched, u64 nsecs)
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200290{
291 u64 T0 = get_nsecs(), T1;
292
293 do {
294 T1 = get_nsecs();
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300295 } while (T1 + sched->run_measurement_overhead < T0 + nsecs);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200296}
297
298static void sleep_nsecs(u64 nsecs)
299{
300 struct timespec ts;
301
302 ts.tv_nsec = nsecs % 999999999;
303 ts.tv_sec = nsecs / 999999999;
304
305 nanosleep(&ts, NULL);
306}
307
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300308static void calibrate_run_measurement_overhead(struct perf_sched *sched)
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200309{
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -0300310 u64 T0, T1, delta, min_delta = NSEC_PER_SEC;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200311 int i;
312
313 for (i = 0; i < 10; i++) {
314 T0 = get_nsecs();
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300315 burn_nsecs(sched, 0);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200316 T1 = get_nsecs();
317 delta = T1-T0;
318 min_delta = min(min_delta, delta);
319 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300320 sched->run_measurement_overhead = min_delta;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200321
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200322 printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200323}
324
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300325static void calibrate_sleep_measurement_overhead(struct perf_sched *sched)
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200326{
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -0300327 u64 T0, T1, delta, min_delta = NSEC_PER_SEC;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200328 int i;
329
330 for (i = 0; i < 10; i++) {
331 T0 = get_nsecs();
332 sleep_nsecs(10000);
333 T1 = get_nsecs();
334 delta = T1-T0;
335 min_delta = min(min_delta, delta);
336 }
337 min_delta -= 10000;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300338 sched->sleep_measurement_overhead = min_delta;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200339
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200340 printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200341}
342
mingo39aeb522009-09-14 20:04:48 +0200343static struct sched_atom *
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200344get_new_event(struct task_desc *task, u64 timestamp)
Ingo Molnarec156762009-09-11 12:12:54 +0200345{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200346 struct sched_atom *event = zalloc(sizeof(*event));
Ingo Molnarec156762009-09-11 12:12:54 +0200347 unsigned long idx = task->nr_events;
348 size_t size;
349
350 event->timestamp = timestamp;
351 event->nr = idx;
352
353 task->nr_events++;
mingo39aeb522009-09-14 20:04:48 +0200354 size = sizeof(struct sched_atom *) * task->nr_events;
355 task->atoms = realloc(task->atoms, size);
356 BUG_ON(!task->atoms);
Ingo Molnarec156762009-09-11 12:12:54 +0200357
mingo39aeb522009-09-14 20:04:48 +0200358 task->atoms[idx] = event;
Ingo Molnarec156762009-09-11 12:12:54 +0200359
360 return event;
361}
362
mingo39aeb522009-09-14 20:04:48 +0200363static struct sched_atom *last_event(struct task_desc *task)
Ingo Molnarec156762009-09-11 12:12:54 +0200364{
365 if (!task->nr_events)
366 return NULL;
367
mingo39aeb522009-09-14 20:04:48 +0200368 return task->atoms[task->nr_events - 1];
Ingo Molnarec156762009-09-11 12:12:54 +0200369}
370
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300371static void add_sched_event_run(struct perf_sched *sched, struct task_desc *task,
372 u64 timestamp, u64 duration)
Ingo Molnarec156762009-09-11 12:12:54 +0200373{
mingo39aeb522009-09-14 20:04:48 +0200374 struct sched_atom *event, *curr_event = last_event(task);
Ingo Molnarec156762009-09-11 12:12:54 +0200375
376 /*
Ingo Molnarfbf94822009-09-11 12:12:54 +0200377 * optimize an existing RUN event by merging this one
378 * to it:
379 */
Ingo Molnarec156762009-09-11 12:12:54 +0200380 if (curr_event && curr_event->type == SCHED_EVENT_RUN) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300381 sched->nr_run_events_optimized++;
Ingo Molnarec156762009-09-11 12:12:54 +0200382 curr_event->duration += duration;
383 return;
384 }
385
386 event = get_new_event(task, timestamp);
387
388 event->type = SCHED_EVENT_RUN;
389 event->duration = duration;
390
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300391 sched->nr_run_events++;
Ingo Molnarec156762009-09-11 12:12:54 +0200392}
393
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300394static void add_sched_event_wakeup(struct perf_sched *sched, struct task_desc *task,
395 u64 timestamp, struct task_desc *wakee)
Ingo Molnarec156762009-09-11 12:12:54 +0200396{
mingo39aeb522009-09-14 20:04:48 +0200397 struct sched_atom *event, *wakee_event;
Ingo Molnarec156762009-09-11 12:12:54 +0200398
399 event = get_new_event(task, timestamp);
400 event->type = SCHED_EVENT_WAKEUP;
401 event->wakee = wakee;
402
403 wakee_event = last_event(wakee);
404 if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300405 sched->targetless_wakeups++;
Ingo Molnarec156762009-09-11 12:12:54 +0200406 return;
407 }
408 if (wakee_event->wait_sem) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300409 sched->multitarget_wakeups++;
Ingo Molnarec156762009-09-11 12:12:54 +0200410 return;
411 }
412
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200413 wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem));
Ingo Molnarec156762009-09-11 12:12:54 +0200414 sem_init(wakee_event->wait_sem, 0, 0);
415 wakee_event->specific_wait = 1;
416 event->wait_sem = wakee_event->wait_sem;
417
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300418 sched->nr_wakeup_events++;
Ingo Molnarec156762009-09-11 12:12:54 +0200419}
420
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300421static void add_sched_event_sleep(struct perf_sched *sched, struct task_desc *task,
422 u64 timestamp, u64 task_state __maybe_unused)
Ingo Molnarec156762009-09-11 12:12:54 +0200423{
mingo39aeb522009-09-14 20:04:48 +0200424 struct sched_atom *event = get_new_event(task, timestamp);
Ingo Molnarec156762009-09-11 12:12:54 +0200425
426 event->type = SCHED_EVENT_SLEEP;
427
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300428 sched->nr_sleep_events++;
Ingo Molnarec156762009-09-11 12:12:54 +0200429}
430
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300431static struct task_desc *register_pid(struct perf_sched *sched,
432 unsigned long pid, const char *comm)
Ingo Molnarec156762009-09-11 12:12:54 +0200433{
434 struct task_desc *task;
Yunlong Songcb06ac22015-03-31 21:46:30 +0800435 static int pid_max;
Ingo Molnarec156762009-09-11 12:12:54 +0200436
Yunlong Songcb06ac22015-03-31 21:46:30 +0800437 if (sched->pid_to_task == NULL) {
438 if (sysctl__read_int("kernel/pid_max", &pid_max) < 0)
439 pid_max = MAX_PID;
440 BUG_ON((sched->pid_to_task = calloc(pid_max, sizeof(struct task_desc *))) == NULL);
441 }
Yunlong Song3a423a52015-03-31 21:46:31 +0800442 if (pid >= (unsigned long)pid_max) {
443 BUG_ON((sched->pid_to_task = realloc(sched->pid_to_task, (pid + 1) *
444 sizeof(struct task_desc *))) == NULL);
445 while (pid >= (unsigned long)pid_max)
446 sched->pid_to_task[pid_max++] = NULL;
447 }
Ingo Molnarec156762009-09-11 12:12:54 +0200448
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300449 task = sched->pid_to_task[pid];
Ingo Molnarec156762009-09-11 12:12:54 +0200450
451 if (task)
452 return task;
453
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200454 task = zalloc(sizeof(*task));
Ingo Molnarec156762009-09-11 12:12:54 +0200455 task->pid = pid;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300456 task->nr = sched->nr_tasks;
Ingo Molnarec156762009-09-11 12:12:54 +0200457 strcpy(task->comm, comm);
458 /*
459 * every task starts in sleeping state - this gets ignored
460 * if there's no wakeup pointing to this sleep state:
461 */
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300462 add_sched_event_sleep(sched, task, 0, 0);
Ingo Molnarec156762009-09-11 12:12:54 +0200463
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300464 sched->pid_to_task[pid] = task;
465 sched->nr_tasks++;
Yunlong Song0755bc42015-03-31 21:46:28 +0800466 sched->tasks = realloc(sched->tasks, sched->nr_tasks * sizeof(struct task_desc *));
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300467 BUG_ON(!sched->tasks);
468 sched->tasks[task->nr] = task;
Ingo Molnarec156762009-09-11 12:12:54 +0200469
Namhyung Kimbb963e12017-02-17 17:17:38 +0900470 if (verbose > 0)
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300471 printf("registered task #%ld, PID %ld (%s)\n", sched->nr_tasks, pid, comm);
Ingo Molnarec156762009-09-11 12:12:54 +0200472
473 return task;
474}
475
476
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300477static void print_task_traces(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200478{
479 struct task_desc *task;
480 unsigned long i;
481
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300482 for (i = 0; i < sched->nr_tasks; i++) {
483 task = sched->tasks[i];
Ingo Molnarad236fd2009-09-11 12:12:54 +0200484 printf("task %6ld (%20s:%10ld), nr_events: %ld\n",
Ingo Molnarec156762009-09-11 12:12:54 +0200485 task->nr, task->comm, task->pid, task->nr_events);
486 }
487}
488
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300489static void add_cross_task_wakeups(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200490{
491 struct task_desc *task1, *task2;
492 unsigned long i, j;
493
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300494 for (i = 0; i < sched->nr_tasks; i++) {
495 task1 = sched->tasks[i];
Ingo Molnarec156762009-09-11 12:12:54 +0200496 j = i + 1;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300497 if (j == sched->nr_tasks)
Ingo Molnarec156762009-09-11 12:12:54 +0200498 j = 0;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300499 task2 = sched->tasks[j];
500 add_sched_event_wakeup(sched, task1, 0, task2);
Ingo Molnarec156762009-09-11 12:12:54 +0200501 }
502}
503
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300504static void perf_sched__process_event(struct perf_sched *sched,
505 struct sched_atom *atom)
Ingo Molnarec156762009-09-11 12:12:54 +0200506{
507 int ret = 0;
Ingo Molnarec156762009-09-11 12:12:54 +0200508
mingo39aeb522009-09-14 20:04:48 +0200509 switch (atom->type) {
Ingo Molnarec156762009-09-11 12:12:54 +0200510 case SCHED_EVENT_RUN:
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300511 burn_nsecs(sched, atom->duration);
Ingo Molnarec156762009-09-11 12:12:54 +0200512 break;
513 case SCHED_EVENT_SLEEP:
mingo39aeb522009-09-14 20:04:48 +0200514 if (atom->wait_sem)
515 ret = sem_wait(atom->wait_sem);
Ingo Molnarec156762009-09-11 12:12:54 +0200516 BUG_ON(ret);
517 break;
518 case SCHED_EVENT_WAKEUP:
mingo39aeb522009-09-14 20:04:48 +0200519 if (atom->wait_sem)
520 ret = sem_post(atom->wait_sem);
Ingo Molnarec156762009-09-11 12:12:54 +0200521 BUG_ON(ret);
522 break;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200523 case SCHED_EVENT_MIGRATION:
524 break;
Ingo Molnarec156762009-09-11 12:12:54 +0200525 default:
526 BUG_ON(1);
527 }
528}
529
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200530static u64 get_cpu_usage_nsec_parent(void)
Ingo Molnarec156762009-09-11 12:12:54 +0200531{
532 struct rusage ru;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200533 u64 sum;
Ingo Molnarec156762009-09-11 12:12:54 +0200534 int err;
535
536 err = getrusage(RUSAGE_SELF, &ru);
537 BUG_ON(err);
538
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -0300539 sum = ru.ru_utime.tv_sec * NSEC_PER_SEC + ru.ru_utime.tv_usec * NSEC_PER_USEC;
540 sum += ru.ru_stime.tv_sec * NSEC_PER_SEC + ru.ru_stime.tv_usec * NSEC_PER_USEC;
Ingo Molnarec156762009-09-11 12:12:54 +0200541
542 return sum;
543}
544
Yunlong Song939cda52015-03-31 21:46:34 +0800545static int self_open_counters(struct perf_sched *sched, unsigned long cur_task)
Ingo Molnarec156762009-09-11 12:12:54 +0200546{
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800547 struct perf_event_attr attr;
Yunlong Song939cda52015-03-31 21:46:34 +0800548 char sbuf[STRERR_BUFSIZE], info[STRERR_BUFSIZE];
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800549 int fd;
Yunlong Song939cda52015-03-31 21:46:34 +0800550 struct rlimit limit;
551 bool need_privilege = false;
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800552
553 memset(&attr, 0, sizeof(attr));
554
555 attr.type = PERF_TYPE_SOFTWARE;
556 attr.config = PERF_COUNT_SW_TASK_CLOCK;
557
Yunlong Song939cda52015-03-31 21:46:34 +0800558force_again:
Yann Droneaud57480d22014-06-30 22:28:47 +0200559 fd = sys_perf_event_open(&attr, 0, -1, -1,
560 perf_event_open_cloexec_flag());
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800561
Yunlong Song1aff59b2015-03-31 21:46:33 +0800562 if (fd < 0) {
Yunlong Song939cda52015-03-31 21:46:34 +0800563 if (errno == EMFILE) {
564 if (sched->force) {
565 BUG_ON(getrlimit(RLIMIT_NOFILE, &limit) == -1);
566 limit.rlim_cur += sched->nr_tasks - cur_task;
567 if (limit.rlim_cur > limit.rlim_max) {
568 limit.rlim_max = limit.rlim_cur;
569 need_privilege = true;
570 }
571 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
572 if (need_privilege && errno == EPERM)
573 strcpy(info, "Need privilege\n");
574 } else
575 goto force_again;
576 } else
577 strcpy(info, "Have a try with -f option\n");
578 }
Namhyung Kim60b7d142012-09-12 11:11:06 +0900579 pr_err("Error: sys_perf_event_open() syscall returned "
Yunlong Song939cda52015-03-31 21:46:34 +0800580 "with %d (%s)\n%s", fd,
Arnaldo Carvalho de Meloc8b5f2c2016-07-06 11:56:20 -0300581 str_error_r(errno, sbuf, sizeof(sbuf)), info);
Yunlong Song1aff59b2015-03-31 21:46:33 +0800582 exit(EXIT_FAILURE);
583 }
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800584 return fd;
585}
586
587static u64 get_cpu_usage_nsec_self(int fd)
588{
589 u64 runtime;
Ingo Molnarec156762009-09-11 12:12:54 +0200590 int ret;
591
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800592 ret = read(fd, &runtime, sizeof(runtime));
593 BUG_ON(ret != sizeof(runtime));
Ingo Molnarec156762009-09-11 12:12:54 +0200594
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800595 return runtime;
Ingo Molnarec156762009-09-11 12:12:54 +0200596}
597
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300598struct sched_thread_parms {
599 struct task_desc *task;
600 struct perf_sched *sched;
Yunlong Song08097ab2015-03-31 21:46:32 +0800601 int fd;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300602};
603
Ingo Molnarec156762009-09-11 12:12:54 +0200604static void *thread_func(void *ctx)
605{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300606 struct sched_thread_parms *parms = ctx;
607 struct task_desc *this_task = parms->task;
608 struct perf_sched *sched = parms->sched;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200609 u64 cpu_usage_0, cpu_usage_1;
Ingo Molnarec156762009-09-11 12:12:54 +0200610 unsigned long i, ret;
611 char comm2[22];
Yunlong Song08097ab2015-03-31 21:46:32 +0800612 int fd = parms->fd;
Ingo Molnarec156762009-09-11 12:12:54 +0200613
Arnaldo Carvalho de Melo74cf2492013-12-27 16:55:14 -0300614 zfree(&parms);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300615
Ingo Molnarec156762009-09-11 12:12:54 +0200616 sprintf(comm2, ":%s", this_task->comm);
617 prctl(PR_SET_NAME, comm2);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300618 if (fd < 0)
619 return NULL;
Ingo Molnarec156762009-09-11 12:12:54 +0200620again:
621 ret = sem_post(&this_task->ready_for_work);
622 BUG_ON(ret);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300623 ret = pthread_mutex_lock(&sched->start_work_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200624 BUG_ON(ret);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300625 ret = pthread_mutex_unlock(&sched->start_work_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200626 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200627
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800628 cpu_usage_0 = get_cpu_usage_nsec_self(fd);
Ingo Molnarec156762009-09-11 12:12:54 +0200629
630 for (i = 0; i < this_task->nr_events; i++) {
631 this_task->curr_event = i;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300632 perf_sched__process_event(sched, this_task->atoms[i]);
Ingo Molnarec156762009-09-11 12:12:54 +0200633 }
634
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800635 cpu_usage_1 = get_cpu_usage_nsec_self(fd);
Ingo Molnarec156762009-09-11 12:12:54 +0200636 this_task->cpu_usage = cpu_usage_1 - cpu_usage_0;
Ingo Molnarec156762009-09-11 12:12:54 +0200637 ret = sem_post(&this_task->work_done_sem);
638 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200639
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300640 ret = pthread_mutex_lock(&sched->work_done_wait_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200641 BUG_ON(ret);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300642 ret = pthread_mutex_unlock(&sched->work_done_wait_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200643 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200644
645 goto again;
646}
647
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300648static void create_tasks(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200649{
650 struct task_desc *task;
651 pthread_attr_t attr;
652 unsigned long i;
653 int err;
654
655 err = pthread_attr_init(&attr);
656 BUG_ON(err);
Jiri Pirko12f7e032011-01-10 14:14:23 -0200657 err = pthread_attr_setstacksize(&attr,
658 (size_t) max(16 * 1024, PTHREAD_STACK_MIN));
Ingo Molnarec156762009-09-11 12:12:54 +0200659 BUG_ON(err);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300660 err = pthread_mutex_lock(&sched->start_work_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200661 BUG_ON(err);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300662 err = pthread_mutex_lock(&sched->work_done_wait_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200663 BUG_ON(err);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300664 for (i = 0; i < sched->nr_tasks; i++) {
665 struct sched_thread_parms *parms = malloc(sizeof(*parms));
666 BUG_ON(parms == NULL);
667 parms->task = task = sched->tasks[i];
668 parms->sched = sched;
Yunlong Song939cda52015-03-31 21:46:34 +0800669 parms->fd = self_open_counters(sched, i);
Ingo Molnarec156762009-09-11 12:12:54 +0200670 sem_init(&task->sleep_sem, 0, 0);
671 sem_init(&task->ready_for_work, 0, 0);
672 sem_init(&task->work_done_sem, 0, 0);
673 task->curr_event = 0;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300674 err = pthread_create(&task->thread, &attr, thread_func, parms);
Ingo Molnarec156762009-09-11 12:12:54 +0200675 BUG_ON(err);
676 }
677}
678
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300679static void wait_for_tasks(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200680{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200681 u64 cpu_usage_0, cpu_usage_1;
Ingo Molnarec156762009-09-11 12:12:54 +0200682 struct task_desc *task;
683 unsigned long i, ret;
684
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300685 sched->start_time = get_nsecs();
686 sched->cpu_usage = 0;
687 pthread_mutex_unlock(&sched->work_done_wait_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200688
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300689 for (i = 0; i < sched->nr_tasks; i++) {
690 task = sched->tasks[i];
Ingo Molnarec156762009-09-11 12:12:54 +0200691 ret = sem_wait(&task->ready_for_work);
692 BUG_ON(ret);
693 sem_init(&task->ready_for_work, 0, 0);
694 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300695 ret = pthread_mutex_lock(&sched->work_done_wait_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200696 BUG_ON(ret);
697
698 cpu_usage_0 = get_cpu_usage_nsec_parent();
699
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300700 pthread_mutex_unlock(&sched->start_work_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200701
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300702 for (i = 0; i < sched->nr_tasks; i++) {
703 task = sched->tasks[i];
Ingo Molnarec156762009-09-11 12:12:54 +0200704 ret = sem_wait(&task->work_done_sem);
705 BUG_ON(ret);
706 sem_init(&task->work_done_sem, 0, 0);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300707 sched->cpu_usage += task->cpu_usage;
Ingo Molnarec156762009-09-11 12:12:54 +0200708 task->cpu_usage = 0;
709 }
710
711 cpu_usage_1 = get_cpu_usage_nsec_parent();
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300712 if (!sched->runavg_cpu_usage)
713 sched->runavg_cpu_usage = sched->cpu_usage;
Yunlong Songff5f3bb2015-03-31 21:46:36 +0800714 sched->runavg_cpu_usage = (sched->runavg_cpu_usage * (sched->replay_repeat - 1) + sched->cpu_usage) / sched->replay_repeat;
Ingo Molnarec156762009-09-11 12:12:54 +0200715
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300716 sched->parent_cpu_usage = cpu_usage_1 - cpu_usage_0;
717 if (!sched->runavg_parent_cpu_usage)
718 sched->runavg_parent_cpu_usage = sched->parent_cpu_usage;
Yunlong Songff5f3bb2015-03-31 21:46:36 +0800719 sched->runavg_parent_cpu_usage = (sched->runavg_parent_cpu_usage * (sched->replay_repeat - 1) +
720 sched->parent_cpu_usage)/sched->replay_repeat;
Ingo Molnarec156762009-09-11 12:12:54 +0200721
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300722 ret = pthread_mutex_lock(&sched->start_work_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200723 BUG_ON(ret);
724
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300725 for (i = 0; i < sched->nr_tasks; i++) {
726 task = sched->tasks[i];
Ingo Molnarec156762009-09-11 12:12:54 +0200727 sem_init(&task->sleep_sem, 0, 0);
728 task->curr_event = 0;
729 }
730}
731
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300732static void run_one_test(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200733{
Kyle McMartinfb7d0b32011-01-24 11:13:04 -0500734 u64 T0, T1, delta, avg_delta, fluct;
Ingo Molnarec156762009-09-11 12:12:54 +0200735
736 T0 = get_nsecs();
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300737 wait_for_tasks(sched);
Ingo Molnarec156762009-09-11 12:12:54 +0200738 T1 = get_nsecs();
739
740 delta = T1 - T0;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300741 sched->sum_runtime += delta;
742 sched->nr_runs++;
Ingo Molnarec156762009-09-11 12:12:54 +0200743
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300744 avg_delta = sched->sum_runtime / sched->nr_runs;
Ingo Molnarec156762009-09-11 12:12:54 +0200745 if (delta < avg_delta)
746 fluct = avg_delta - delta;
747 else
748 fluct = delta - avg_delta;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300749 sched->sum_fluct += fluct;
750 if (!sched->run_avg)
751 sched->run_avg = delta;
Yunlong Songff5f3bb2015-03-31 21:46:36 +0800752 sched->run_avg = (sched->run_avg * (sched->replay_repeat - 1) + delta) / sched->replay_repeat;
Ingo Molnarec156762009-09-11 12:12:54 +0200753
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -0300754 printf("#%-3ld: %0.3f, ", sched->nr_runs, (double)delta / NSEC_PER_MSEC);
Ingo Molnarec156762009-09-11 12:12:54 +0200755
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -0300756 printf("ravg: %0.2f, ", (double)sched->run_avg / NSEC_PER_MSEC);
Ingo Molnarec156762009-09-11 12:12:54 +0200757
Ingo Molnarad236fd2009-09-11 12:12:54 +0200758 printf("cpu: %0.2f / %0.2f",
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -0300759 (double)sched->cpu_usage / NSEC_PER_MSEC, (double)sched->runavg_cpu_usage / NSEC_PER_MSEC);
Ingo Molnarec156762009-09-11 12:12:54 +0200760
761#if 0
762 /*
Ingo Molnarfbf94822009-09-11 12:12:54 +0200763 * rusage statistics done by the parent, these are less
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300764 * accurate than the sched->sum_exec_runtime based statistics:
Ingo Molnarfbf94822009-09-11 12:12:54 +0200765 */
Ingo Molnarad236fd2009-09-11 12:12:54 +0200766 printf(" [%0.2f / %0.2f]",
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -0300767 (double)sched->parent_cpu_usage / NSEC_PER_MSEC,
768 (double)sched->runavg_parent_cpu_usage / NSEC_PER_MSEC);
Ingo Molnarec156762009-09-11 12:12:54 +0200769#endif
770
Ingo Molnarad236fd2009-09-11 12:12:54 +0200771 printf("\n");
Ingo Molnarec156762009-09-11 12:12:54 +0200772
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300773 if (sched->nr_sleep_corrections)
774 printf(" (%ld sleep corrections)\n", sched->nr_sleep_corrections);
775 sched->nr_sleep_corrections = 0;
Ingo Molnarec156762009-09-11 12:12:54 +0200776}
777
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300778static void test_calibrations(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200779{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200780 u64 T0, T1;
Ingo Molnarec156762009-09-11 12:12:54 +0200781
782 T0 = get_nsecs();
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -0300783 burn_nsecs(sched, NSEC_PER_MSEC);
Ingo Molnarec156762009-09-11 12:12:54 +0200784 T1 = get_nsecs();
785
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200786 printf("the run test took %" PRIu64 " nsecs\n", T1 - T0);
Ingo Molnarec156762009-09-11 12:12:54 +0200787
788 T0 = get_nsecs();
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -0300789 sleep_nsecs(NSEC_PER_MSEC);
Ingo Molnarec156762009-09-11 12:12:54 +0200790 T1 = get_nsecs();
791
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200792 printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0);
Ingo Molnarec156762009-09-11 12:12:54 +0200793}
794
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300795static int
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300796replay_wakeup_event(struct perf_sched *sched,
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300797 struct perf_evsel *evsel, struct perf_sample *sample,
798 struct machine *machine __maybe_unused)
Ingo Molnarec156762009-09-11 12:12:54 +0200799{
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300800 const char *comm = perf_evsel__strval(evsel, sample, "comm");
801 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200802 struct task_desc *waker, *wakee;
803
Namhyung Kimbb963e12017-02-17 17:17:38 +0900804 if (verbose > 0) {
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -0300805 printf("sched_wakeup event %p\n", evsel);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200806
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300807 printf(" ... pid %d woke up %s/%d\n", sample->tid, comm, pid);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200808 }
809
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -0300810 waker = register_pid(sched, sample->tid, "<unknown>");
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300811 wakee = register_pid(sched, pid, comm);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200812
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300813 add_sched_event_wakeup(sched, waker, sample->time, wakee);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300814 return 0;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200815}
816
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300817static int replay_switch_event(struct perf_sched *sched,
818 struct perf_evsel *evsel,
819 struct perf_sample *sample,
820 struct machine *machine __maybe_unused)
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200821{
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300822 const char *prev_comm = perf_evsel__strval(evsel, sample, "prev_comm"),
823 *next_comm = perf_evsel__strval(evsel, sample, "next_comm");
824 const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"),
825 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
826 const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state");
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300827 struct task_desc *prev, __maybe_unused *next;
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -0300828 u64 timestamp0, timestamp = sample->time;
829 int cpu = sample->cpu;
Ingo Molnarfbf94822009-09-11 12:12:54 +0200830 s64 delta;
831
Namhyung Kimbb963e12017-02-17 17:17:38 +0900832 if (verbose > 0)
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -0300833 printf("sched_switch event %p\n", evsel);
Ingo Molnarad236fd2009-09-11 12:12:54 +0200834
Ingo Molnarfbf94822009-09-11 12:12:54 +0200835 if (cpu >= MAX_CPUS || cpu < 0)
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300836 return 0;
Ingo Molnarfbf94822009-09-11 12:12:54 +0200837
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300838 timestamp0 = sched->cpu_last_switched[cpu];
Ingo Molnarfbf94822009-09-11 12:12:54 +0200839 if (timestamp0)
840 delta = timestamp - timestamp0;
841 else
842 delta = 0;
843
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300844 if (delta < 0) {
Namhyung Kim60b7d142012-09-12 11:11:06 +0900845 pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300846 return -1;
847 }
Ingo Molnarfbf94822009-09-11 12:12:54 +0200848
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300849 pr_debug(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n",
850 prev_comm, prev_pid, next_comm, next_pid, delta);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200851
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300852 prev = register_pid(sched, prev_pid, prev_comm);
853 next = register_pid(sched, next_pid, next_comm);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200854
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300855 sched->cpu_last_switched[cpu] = timestamp;
Ingo Molnarfbf94822009-09-11 12:12:54 +0200856
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300857 add_sched_event_run(sched, prev, timestamp, delta);
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300858 add_sched_event_sleep(sched, prev, timestamp, prev_state);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300859
860 return 0;
Ingo Molnarfbf94822009-09-11 12:12:54 +0200861}
862
David Aherncb627502013-08-07 22:50:47 -0400863static int replay_fork_event(struct perf_sched *sched,
864 union perf_event *event,
865 struct machine *machine)
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200866{
David Aherncb627502013-08-07 22:50:47 -0400867 struct thread *child, *parent;
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300868
Adrian Hunter314add62013-08-27 11:23:03 +0300869 child = machine__findnew_thread(machine, event->fork.pid,
870 event->fork.tid);
871 parent = machine__findnew_thread(machine, event->fork.ppid,
872 event->fork.ptid);
David Aherncb627502013-08-07 22:50:47 -0400873
874 if (child == NULL || parent == NULL) {
875 pr_debug("thread does not exist on fork event: child %p, parent %p\n",
876 child, parent);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300877 goto out_put;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200878 }
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300879
Namhyung Kimbb963e12017-02-17 17:17:38 +0900880 if (verbose > 0) {
David Aherncb627502013-08-07 22:50:47 -0400881 printf("fork event\n");
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +0200882 printf("... parent: %s/%d\n", thread__comm_str(parent), parent->tid);
883 printf("... child: %s/%d\n", thread__comm_str(child), child->tid);
David Aherncb627502013-08-07 22:50:47 -0400884 }
885
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +0200886 register_pid(sched, parent->tid, thread__comm_str(parent));
887 register_pid(sched, child->tid, thread__comm_str(child));
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300888out_put:
889 thread__put(child);
890 thread__put(parent);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300891 return 0;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200892}
893
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200894struct sort_dimension {
895 const char *name;
Ingo Molnarb5fae122009-09-11 12:12:54 +0200896 sort_fn_t cmp;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200897 struct list_head list;
898};
899
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200900static int
mingo39aeb522009-09-14 20:04:48 +0200901thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200902{
903 struct sort_dimension *sort;
904 int ret = 0;
905
Ingo Molnarb5fae122009-09-11 12:12:54 +0200906 BUG_ON(list_empty(list));
907
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200908 list_for_each_entry(sort, list, list) {
909 ret = sort->cmp(l, r);
910 if (ret)
911 return ret;
912 }
913
914 return ret;
915}
916
mingo39aeb522009-09-14 20:04:48 +0200917static struct work_atoms *
Ingo Molnarb5fae122009-09-11 12:12:54 +0200918thread_atoms_search(struct rb_root *root, struct thread *thread,
919 struct list_head *sort_list)
920{
921 struct rb_node *node = root->rb_node;
mingo39aeb522009-09-14 20:04:48 +0200922 struct work_atoms key = { .thread = thread };
Ingo Molnarb5fae122009-09-11 12:12:54 +0200923
924 while (node) {
mingo39aeb522009-09-14 20:04:48 +0200925 struct work_atoms *atoms;
Ingo Molnarb5fae122009-09-11 12:12:54 +0200926 int cmp;
927
mingo39aeb522009-09-14 20:04:48 +0200928 atoms = container_of(node, struct work_atoms, node);
Ingo Molnarb5fae122009-09-11 12:12:54 +0200929
930 cmp = thread_lat_cmp(sort_list, &key, atoms);
931 if (cmp > 0)
932 node = node->rb_left;
933 else if (cmp < 0)
934 node = node->rb_right;
935 else {
936 BUG_ON(thread != atoms->thread);
937 return atoms;
938 }
939 }
940 return NULL;
941}
942
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200943static void
mingo39aeb522009-09-14 20:04:48 +0200944__thread_latency_insert(struct rb_root *root, struct work_atoms *data,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200945 struct list_head *sort_list)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200946{
947 struct rb_node **new = &(root->rb_node), *parent = NULL;
948
949 while (*new) {
mingo39aeb522009-09-14 20:04:48 +0200950 struct work_atoms *this;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200951 int cmp;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200952
mingo39aeb522009-09-14 20:04:48 +0200953 this = container_of(*new, struct work_atoms, node);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200954 parent = *new;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200955
956 cmp = thread_lat_cmp(sort_list, data, this);
957
958 if (cmp > 0)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200959 new = &((*new)->rb_left);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200960 else
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200961 new = &((*new)->rb_right);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200962 }
963
964 rb_link_node(&data->node, parent, new);
965 rb_insert_color(&data->node, root);
966}
967
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300968static int thread_atoms_insert(struct perf_sched *sched, struct thread *thread)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200969{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200970 struct work_atoms *atoms = zalloc(sizeof(*atoms));
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300971 if (!atoms) {
972 pr_err("No memory at %s\n", __func__);
973 return -1;
974 }
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200975
Arnaldo Carvalho de Melof3b623b2015-03-02 22:21:35 -0300976 atoms->thread = thread__get(thread);
mingo39aeb522009-09-14 20:04:48 +0200977 INIT_LIST_HEAD(&atoms->work_list);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300978 __thread_latency_insert(&sched->atom_root, atoms, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300979 return 0;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200980}
981
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300982static char sched_out_state(u64 prev_state)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200983{
984 const char *str = TASK_STATE_TO_CHAR_STR;
985
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300986 return str[prev_state];
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200987}
988
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300989static int
mingo39aeb522009-09-14 20:04:48 +0200990add_sched_out_event(struct work_atoms *atoms,
991 char run_state,
992 u64 timestamp)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200993{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200994 struct work_atom *atom = zalloc(sizeof(*atom));
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300995 if (!atom) {
996 pr_err("Non memory at %s", __func__);
997 return -1;
998 }
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200999
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +02001000 atom->sched_out_time = timestamp;
1001
mingo39aeb522009-09-14 20:04:48 +02001002 if (run_state == 'R') {
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001003 atom->state = THREAD_WAIT_CPU;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +02001004 atom->wake_up_time = atom->sched_out_time;
Frederic Weisbeckerc6ced612009-09-13 00:46:19 +02001005 }
1006
mingo39aeb522009-09-14 20:04:48 +02001007 list_add_tail(&atom->list, &atoms->work_list);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001008 return 0;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001009}
1010
1011static void
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001012add_runtime_event(struct work_atoms *atoms, u64 delta,
1013 u64 timestamp __maybe_unused)
mingo39aeb522009-09-14 20:04:48 +02001014{
1015 struct work_atom *atom;
1016
1017 BUG_ON(list_empty(&atoms->work_list));
1018
1019 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
1020
1021 atom->runtime += delta;
1022 atoms->total_runtime += delta;
1023}
1024
1025static void
1026add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001027{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001028 struct work_atom *atom;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001029 u64 delta;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001030
mingo39aeb522009-09-14 20:04:48 +02001031 if (list_empty(&atoms->work_list))
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001032 return;
1033
mingo39aeb522009-09-14 20:04:48 +02001034 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001035
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001036 if (atom->state != THREAD_WAIT_CPU)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001037 return;
1038
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001039 if (timestamp < atom->wake_up_time) {
1040 atom->state = THREAD_IGNORE;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001041 return;
1042 }
1043
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001044 atom->state = THREAD_SCHED_IN;
1045 atom->sched_in_time = timestamp;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001046
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001047 delta = atom->sched_in_time - atom->wake_up_time;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001048 atoms->total_lat += delta;
Frederic Weisbecker3786310a2009-12-09 21:40:08 +01001049 if (delta > atoms->max_lat) {
Frederic Weisbecker66685672009-09-13 01:56:25 +02001050 atoms->max_lat = delta;
Frederic Weisbecker3786310a2009-12-09 21:40:08 +01001051 atoms->max_lat_at = timestamp;
1052 }
Frederic Weisbecker66685672009-09-13 01:56:25 +02001053 atoms->nb_atoms++;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001054}
1055
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001056static int latency_switch_event(struct perf_sched *sched,
1057 struct perf_evsel *evsel,
1058 struct perf_sample *sample,
1059 struct machine *machine)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001060{
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001061 const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"),
1062 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
1063 const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state");
mingo39aeb522009-09-14 20:04:48 +02001064 struct work_atoms *out_events, *in_events;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001065 struct thread *sched_out, *sched_in;
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -03001066 u64 timestamp0, timestamp = sample->time;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001067 int cpu = sample->cpu, err = -1;
Ingo Molnarea92ed52009-09-12 10:08:34 +02001068 s64 delta;
1069
mingo39aeb522009-09-14 20:04:48 +02001070 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
Ingo Molnarea92ed52009-09-12 10:08:34 +02001071
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001072 timestamp0 = sched->cpu_last_switched[cpu];
1073 sched->cpu_last_switched[cpu] = timestamp;
Ingo Molnarea92ed52009-09-12 10:08:34 +02001074 if (timestamp0)
1075 delta = timestamp - timestamp0;
1076 else
1077 delta = 0;
1078
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001079 if (delta < 0) {
1080 pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta);
1081 return -1;
1082 }
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001083
Adrian Hunter1fcb8762014-07-14 13:02:25 +03001084 sched_out = machine__findnew_thread(machine, -1, prev_pid);
1085 sched_in = machine__findnew_thread(machine, -1, next_pid);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001086 if (sched_out == NULL || sched_in == NULL)
1087 goto out_put;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001088
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001089 out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid);
mingo39aeb522009-09-14 20:04:48 +02001090 if (!out_events) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001091 if (thread_atoms_insert(sched, sched_out))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001092 goto out_put;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001093 out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001094 if (!out_events) {
1095 pr_err("out-event: Internal tree error");
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001096 goto out_put;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001097 }
mingo39aeb522009-09-14 20:04:48 +02001098 }
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001099 if (add_sched_out_event(out_events, sched_out_state(prev_state), timestamp))
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001100 return -1;
mingo39aeb522009-09-14 20:04:48 +02001101
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001102 in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid);
mingo39aeb522009-09-14 20:04:48 +02001103 if (!in_events) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001104 if (thread_atoms_insert(sched, sched_in))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001105 goto out_put;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001106 in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001107 if (!in_events) {
1108 pr_err("in-event: Internal tree error");
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001109 goto out_put;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001110 }
mingo39aeb522009-09-14 20:04:48 +02001111 /*
1112 * Take came in we have not heard about yet,
1113 * add in an initial atom in runnable state:
1114 */
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001115 if (add_sched_out_event(in_events, 'R', timestamp))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001116 goto out_put;
mingo39aeb522009-09-14 20:04:48 +02001117 }
1118 add_sched_in_event(in_events, timestamp);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001119 err = 0;
1120out_put:
1121 thread__put(sched_out);
1122 thread__put(sched_in);
1123 return err;
mingo39aeb522009-09-14 20:04:48 +02001124}
1125
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001126static int latency_runtime_event(struct perf_sched *sched,
1127 struct perf_evsel *evsel,
1128 struct perf_sample *sample,
1129 struct machine *machine)
mingo39aeb522009-09-14 20:04:48 +02001130{
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001131 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
1132 const u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
Adrian Hunter1fcb8762014-07-14 13:02:25 +03001133 struct thread *thread = machine__findnew_thread(machine, -1, pid);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001134 struct work_atoms *atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid);
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -03001135 u64 timestamp = sample->time;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001136 int cpu = sample->cpu, err = -1;
1137
1138 if (thread == NULL)
1139 return -1;
mingo39aeb522009-09-14 20:04:48 +02001140
1141 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
mingo39aeb522009-09-14 20:04:48 +02001142 if (!atoms) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001143 if (thread_atoms_insert(sched, thread))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001144 goto out_put;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001145 atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001146 if (!atoms) {
Namhyung Kim60b7d142012-09-12 11:11:06 +09001147 pr_err("in-event: Internal tree error");
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001148 goto out_put;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001149 }
1150 if (add_sched_out_event(atoms, 'R', timestamp))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001151 goto out_put;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001152 }
1153
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001154 add_runtime_event(atoms, runtime, timestamp);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001155 err = 0;
1156out_put:
1157 thread__put(thread);
1158 return err;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001159}
1160
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001161static int latency_wakeup_event(struct perf_sched *sched,
1162 struct perf_evsel *evsel,
1163 struct perf_sample *sample,
1164 struct machine *machine)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001165{
Peter Zijlstra0680ee72014-05-12 20:19:46 +02001166 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
mingo39aeb522009-09-14 20:04:48 +02001167 struct work_atoms *atoms;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001168 struct work_atom *atom;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001169 struct thread *wakee;
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -03001170 u64 timestamp = sample->time;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001171 int err = -1;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001172
Adrian Hunter1fcb8762014-07-14 13:02:25 +03001173 wakee = machine__findnew_thread(machine, -1, pid);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001174 if (wakee == NULL)
1175 return -1;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001176 atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid);
Frederic Weisbecker17562202009-09-12 23:11:32 +02001177 if (!atoms) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001178 if (thread_atoms_insert(sched, wakee))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001179 goto out_put;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001180 atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001181 if (!atoms) {
Namhyung Kim60b7d142012-09-12 11:11:06 +09001182 pr_err("wakeup-event: Internal tree error");
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001183 goto out_put;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001184 }
1185 if (add_sched_out_event(atoms, 'S', timestamp))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001186 goto out_put;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001187 }
1188
mingo39aeb522009-09-14 20:04:48 +02001189 BUG_ON(list_empty(&atoms->work_list));
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001190
mingo39aeb522009-09-14 20:04:48 +02001191 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001192
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001193 /*
Dongsheng Yang67d62592014-05-13 10:38:21 +09001194 * As we do not guarantee the wakeup event happens when
1195 * task is out of run queue, also may happen when task is
1196 * on run queue and wakeup only change ->state to TASK_RUNNING,
1197 * then we should not set the ->wake_up_time when wake up a
1198 * task which is on run queue.
1199 *
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001200 * You WILL be missing events if you've recorded only
1201 * one CPU, or are only looking at only one, so don't
Dongsheng Yang67d62592014-05-13 10:38:21 +09001202 * skip in this case.
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001203 */
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001204 if (sched->profile_cpu == -1 && atom->state != THREAD_SLEEPING)
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001205 goto out_ok;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001206
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001207 sched->nr_timestamps++;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001208 if (atom->sched_out_time > timestamp) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001209 sched->nr_unordered_timestamps++;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001210 goto out_ok;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001211 }
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +02001212
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001213 atom->state = THREAD_WAIT_CPU;
1214 atom->wake_up_time = timestamp;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001215out_ok:
1216 err = 0;
1217out_put:
1218 thread__put(wakee);
1219 return err;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001220}
1221
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001222static int latency_migrate_task_event(struct perf_sched *sched,
1223 struct perf_evsel *evsel,
1224 struct perf_sample *sample,
1225 struct machine *machine)
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001226{
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001227 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -03001228 u64 timestamp = sample->time;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001229 struct work_atoms *atoms;
1230 struct work_atom *atom;
1231 struct thread *migrant;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001232 int err = -1;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001233
1234 /*
1235 * Only need to worry about migration when profiling one CPU.
1236 */
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001237 if (sched->profile_cpu == -1)
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001238 return 0;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001239
Adrian Hunter1fcb8762014-07-14 13:02:25 +03001240 migrant = machine__findnew_thread(machine, -1, pid);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001241 if (migrant == NULL)
1242 return -1;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001243 atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001244 if (!atoms) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001245 if (thread_atoms_insert(sched, migrant))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001246 goto out_put;
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +02001247 register_pid(sched, migrant->tid, thread__comm_str(migrant));
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001248 atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001249 if (!atoms) {
Namhyung Kim60b7d142012-09-12 11:11:06 +09001250 pr_err("migration-event: Internal tree error");
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001251 goto out_put;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001252 }
1253 if (add_sched_out_event(atoms, 'R', timestamp))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001254 goto out_put;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001255 }
1256
1257 BUG_ON(list_empty(&atoms->work_list));
1258
1259 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
1260 atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp;
1261
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001262 sched->nr_timestamps++;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001263
1264 if (atom->sched_out_time > timestamp)
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001265 sched->nr_unordered_timestamps++;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001266 err = 0;
1267out_put:
1268 thread__put(migrant);
1269 return err;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001270}
1271
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001272static void output_lat_thread(struct perf_sched *sched, struct work_atoms *work_list)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001273{
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001274 int i;
1275 int ret;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001276 u64 avg;
Namhyung Kim99620a52016-10-24 11:02:45 +09001277 char max_lat_at[32];
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001278
mingo39aeb522009-09-14 20:04:48 +02001279 if (!work_list->nb_atoms)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001280 return;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001281 /*
1282 * Ignore idle threads:
1283 */
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +02001284 if (!strcmp(thread__comm_str(work_list->thread), "swapper"))
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001285 return;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001286
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001287 sched->all_runtime += work_list->total_runtime;
1288 sched->all_count += work_list->nb_atoms;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001289
Josef Bacik2f80dd42015-05-22 09:18:40 -04001290 if (work_list->num_merged > 1)
1291 ret = printf(" %s:(%d) ", thread__comm_str(work_list->thread), work_list->num_merged);
1292 else
1293 ret = printf(" %s:%d ", thread__comm_str(work_list->thread), work_list->thread->tid);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001294
mingo08f69e62009-09-14 18:30:44 +02001295 for (i = 0; i < 24 - ret; i++)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001296 printf(" ");
1297
mingo39aeb522009-09-14 20:04:48 +02001298 avg = work_list->total_lat / work_list->nb_atoms;
Namhyung Kim99620a52016-10-24 11:02:45 +09001299 timestamp__scnprintf_usec(work_list->max_lat_at, max_lat_at, sizeof(max_lat_at));
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001300
Namhyung Kim99620a52016-10-24 11:02:45 +09001301 printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %13s s\n",
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -03001302 (double)work_list->total_runtime / NSEC_PER_MSEC,
1303 work_list->nb_atoms, (double)avg / NSEC_PER_MSEC,
1304 (double)work_list->max_lat / NSEC_PER_MSEC,
Namhyung Kim99620a52016-10-24 11:02:45 +09001305 max_lat_at);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001306}
1307
mingo39aeb522009-09-14 20:04:48 +02001308static int pid_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001309{
Jiri Olsa0014de12015-11-02 12:10:25 +01001310 if (l->thread == r->thread)
1311 return 0;
Adrian Hunter38051232013-07-04 16:20:31 +03001312 if (l->thread->tid < r->thread->tid)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001313 return -1;
Adrian Hunter38051232013-07-04 16:20:31 +03001314 if (l->thread->tid > r->thread->tid)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001315 return 1;
Jiri Olsa0014de12015-11-02 12:10:25 +01001316 return (int)(l->thread - r->thread);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001317}
1318
mingo39aeb522009-09-14 20:04:48 +02001319static int avg_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001320{
1321 u64 avgl, avgr;
1322
1323 if (!l->nb_atoms)
1324 return -1;
1325
1326 if (!r->nb_atoms)
1327 return 1;
1328
1329 avgl = l->total_lat / l->nb_atoms;
1330 avgr = r->total_lat / r->nb_atoms;
1331
1332 if (avgl < avgr)
1333 return -1;
1334 if (avgl > avgr)
1335 return 1;
1336
1337 return 0;
1338}
1339
mingo39aeb522009-09-14 20:04:48 +02001340static int max_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001341{
1342 if (l->max_lat < r->max_lat)
1343 return -1;
1344 if (l->max_lat > r->max_lat)
1345 return 1;
1346
1347 return 0;
1348}
1349
mingo39aeb522009-09-14 20:04:48 +02001350static int switch_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001351{
1352 if (l->nb_atoms < r->nb_atoms)
1353 return -1;
1354 if (l->nb_atoms > r->nb_atoms)
1355 return 1;
1356
1357 return 0;
1358}
1359
mingo39aeb522009-09-14 20:04:48 +02001360static int runtime_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001361{
1362 if (l->total_runtime < r->total_runtime)
1363 return -1;
1364 if (l->total_runtime > r->total_runtime)
1365 return 1;
1366
1367 return 0;
1368}
1369
Randy Dunlapcbef79a2009-10-05 13:17:29 -07001370static int sort_dimension__add(const char *tok, struct list_head *list)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001371{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001372 size_t i;
1373 static struct sort_dimension avg_sort_dimension = {
1374 .name = "avg",
1375 .cmp = avg_cmp,
1376 };
1377 static struct sort_dimension max_sort_dimension = {
1378 .name = "max",
1379 .cmp = max_cmp,
1380 };
1381 static struct sort_dimension pid_sort_dimension = {
1382 .name = "pid",
1383 .cmp = pid_cmp,
1384 };
1385 static struct sort_dimension runtime_sort_dimension = {
1386 .name = "runtime",
1387 .cmp = runtime_cmp,
1388 };
1389 static struct sort_dimension switch_sort_dimension = {
1390 .name = "switch",
1391 .cmp = switch_cmp,
1392 };
1393 struct sort_dimension *available_sorts[] = {
1394 &pid_sort_dimension,
1395 &avg_sort_dimension,
1396 &max_sort_dimension,
1397 &switch_sort_dimension,
1398 &runtime_sort_dimension,
1399 };
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001400
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001401 for (i = 0; i < ARRAY_SIZE(available_sorts); i++) {
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001402 if (!strcmp(available_sorts[i]->name, tok)) {
1403 list_add_tail(&available_sorts[i]->list, list);
1404
1405 return 0;
1406 }
1407 }
1408
1409 return -1;
1410}
1411
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001412static void perf_sched__sort_lat(struct perf_sched *sched)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001413{
1414 struct rb_node *node;
Josef Bacik2f80dd42015-05-22 09:18:40 -04001415 struct rb_root *root = &sched->atom_root;
1416again:
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001417 for (;;) {
mingo39aeb522009-09-14 20:04:48 +02001418 struct work_atoms *data;
Josef Bacik2f80dd42015-05-22 09:18:40 -04001419 node = rb_first(root);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001420 if (!node)
1421 break;
1422
Josef Bacik2f80dd42015-05-22 09:18:40 -04001423 rb_erase(node, root);
mingo39aeb522009-09-14 20:04:48 +02001424 data = rb_entry(node, struct work_atoms, node);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001425 __thread_latency_insert(&sched->sorted_atom_root, data, &sched->sort_list);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001426 }
Josef Bacik2f80dd42015-05-22 09:18:40 -04001427 if (root == &sched->atom_root) {
1428 root = &sched->merged_atom_root;
1429 goto again;
1430 }
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001431}
1432
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001433static int process_sched_wakeup_event(struct perf_tool *tool,
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001434 struct perf_evsel *evsel,
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001435 struct perf_sample *sample,
Arnaldo Carvalho de Melo4218e672012-09-11 13:18:47 -03001436 struct machine *machine)
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001437{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001438 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001439
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001440 if (sched->tp_handler->wakeup_event)
1441 return sched->tp_handler->wakeup_event(sched, evsel, sample, machine);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001442
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001443 return 0;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001444}
1445
Jiri Olsaa151a372016-04-12 15:29:29 +02001446union map_priv {
1447 void *ptr;
1448 bool color;
1449};
1450
1451static bool thread__has_color(struct thread *thread)
1452{
1453 union map_priv priv = {
1454 .ptr = thread__priv(thread),
1455 };
1456
1457 return priv.color;
1458}
1459
1460static struct thread*
1461map__findnew_thread(struct perf_sched *sched, struct machine *machine, pid_t pid, pid_t tid)
1462{
1463 struct thread *thread = machine__findnew_thread(machine, pid, tid);
1464 union map_priv priv = {
1465 .color = false,
1466 };
1467
1468 if (!sched->map.color_pids || !thread || thread__priv(thread))
1469 return thread;
1470
1471 if (thread_map__has(sched->map.color_pids, tid))
1472 priv.color = true;
1473
1474 thread__set_priv(thread, priv.ptr);
1475 return thread;
1476}
1477
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001478static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
1479 struct perf_sample *sample, struct machine *machine)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001480{
Dongsheng Yang9d372ca2014-05-16 14:37:05 +09001481 const u32 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
1482 struct thread *sched_in;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001483 int new_shortname;
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -03001484 u64 timestamp0, timestamp = sample->time;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001485 s64 delta;
Jiri Olsa99623c62016-04-12 15:29:26 +02001486 int i, this_cpu = sample->cpu;
1487 int cpus_nr;
1488 bool new_cpu = false;
Jiri Olsa8cd91192016-04-12 15:29:27 +02001489 const char *color = PERF_COLOR_NORMAL;
Namhyung Kim99620a52016-10-24 11:02:45 +09001490 char stimestamp[32];
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001491
1492 BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0);
1493
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001494 if (this_cpu > sched->max_cpu)
1495 sched->max_cpu = this_cpu;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001496
Jiri Olsa99623c62016-04-12 15:29:26 +02001497 if (sched->map.comp) {
1498 cpus_nr = bitmap_weight(sched->map.comp_cpus_mask, MAX_CPUS);
1499 if (!test_and_set_bit(this_cpu, sched->map.comp_cpus_mask)) {
1500 sched->map.comp_cpus[cpus_nr++] = this_cpu;
1501 new_cpu = true;
1502 }
1503 } else
1504 cpus_nr = sched->max_cpu;
1505
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001506 timestamp0 = sched->cpu_last_switched[this_cpu];
1507 sched->cpu_last_switched[this_cpu] = timestamp;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001508 if (timestamp0)
1509 delta = timestamp - timestamp0;
1510 else
1511 delta = 0;
1512
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001513 if (delta < 0) {
Namhyung Kim60b7d142012-09-12 11:11:06 +09001514 pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001515 return -1;
1516 }
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001517
Jiri Olsaa151a372016-04-12 15:29:29 +02001518 sched_in = map__findnew_thread(sched, machine, -1, next_pid);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001519 if (sched_in == NULL)
1520 return -1;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001521
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001522 sched->curr_thread[this_cpu] = thread__get(sched_in);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001523
1524 printf(" ");
1525
1526 new_shortname = 0;
1527 if (!sched_in->shortname[0]) {
Dongsheng6bcab4e2014-05-06 14:39:01 +09001528 if (!strcmp(thread__comm_str(sched_in), "swapper")) {
1529 /*
1530 * Don't allocate a letter-number for swapper:0
1531 * as a shortname. Instead, we use '.' for it.
1532 */
1533 sched_in->shortname[0] = '.';
1534 sched_in->shortname[1] = ' ';
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001535 } else {
Dongsheng6bcab4e2014-05-06 14:39:01 +09001536 sched_in->shortname[0] = sched->next_shortname1;
1537 sched_in->shortname[1] = sched->next_shortname2;
1538
1539 if (sched->next_shortname1 < 'Z') {
1540 sched->next_shortname1++;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001541 } else {
Dongsheng6bcab4e2014-05-06 14:39:01 +09001542 sched->next_shortname1 = 'A';
1543 if (sched->next_shortname2 < '9')
1544 sched->next_shortname2++;
1545 else
1546 sched->next_shortname2 = '0';
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001547 }
1548 }
1549 new_shortname = 1;
1550 }
1551
Jiri Olsa99623c62016-04-12 15:29:26 +02001552 for (i = 0; i < cpus_nr; i++) {
1553 int cpu = sched->map.comp ? sched->map.comp_cpus[i] : i;
Jiri Olsaa151a372016-04-12 15:29:29 +02001554 struct thread *curr_thread = sched->curr_thread[cpu];
1555 const char *pid_color = color;
Jiri Olsacf294f22016-04-12 15:29:30 +02001556 const char *cpu_color = color;
Jiri Olsaa151a372016-04-12 15:29:29 +02001557
1558 if (curr_thread && thread__has_color(curr_thread))
1559 pid_color = COLOR_PIDS;
Jiri Olsa99623c62016-04-12 15:29:26 +02001560
Jiri Olsa73643bb2016-04-12 15:29:31 +02001561 if (sched->map.cpus && !cpu_map__has(sched->map.cpus, cpu))
1562 continue;
1563
Jiri Olsacf294f22016-04-12 15:29:30 +02001564 if (sched->map.color_cpus && cpu_map__has(sched->map.color_cpus, cpu))
1565 cpu_color = COLOR_CPUS;
1566
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001567 if (cpu != this_cpu)
Namhyung Kim1208bb22016-10-24 11:02:43 +09001568 color_fprintf(stdout, color, " ");
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001569 else
Jiri Olsacf294f22016-04-12 15:29:30 +02001570 color_fprintf(stdout, cpu_color, "*");
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001571
Dongsheng6bcab4e2014-05-06 14:39:01 +09001572 if (sched->curr_thread[cpu])
Jiri Olsaa151a372016-04-12 15:29:29 +02001573 color_fprintf(stdout, pid_color, "%2s ", sched->curr_thread[cpu]->shortname);
Dongsheng6bcab4e2014-05-06 14:39:01 +09001574 else
Jiri Olsa8cd91192016-04-12 15:29:27 +02001575 color_fprintf(stdout, color, " ");
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001576 }
1577
Jiri Olsa73643bb2016-04-12 15:29:31 +02001578 if (sched->map.cpus && !cpu_map__has(sched->map.cpus, this_cpu))
1579 goto out;
1580
Namhyung Kim99620a52016-10-24 11:02:45 +09001581 timestamp__scnprintf_usec(timestamp, stimestamp, sizeof(stimestamp));
1582 color_fprintf(stdout, color, " %12s secs ", stimestamp);
Namhyung Kimbb963e12017-02-17 17:17:38 +09001583 if (new_shortname || (verbose > 0 && sched_in->tid)) {
Jiri Olsaa151a372016-04-12 15:29:29 +02001584 const char *pid_color = color;
1585
1586 if (thread__has_color(sched_in))
1587 pid_color = COLOR_PIDS;
1588
1589 color_fprintf(stdout, pid_color, "%s => %s:%d",
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +02001590 sched_in->shortname, thread__comm_str(sched_in), sched_in->tid);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001591 }
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001592
Jiri Olsa99623c62016-04-12 15:29:26 +02001593 if (sched->map.comp && new_cpu)
Jiri Olsa8cd91192016-04-12 15:29:27 +02001594 color_fprintf(stdout, color, " (CPU %d)", this_cpu);
Jiri Olsa99623c62016-04-12 15:29:26 +02001595
Jiri Olsa73643bb2016-04-12 15:29:31 +02001596out:
Jiri Olsa8cd91192016-04-12 15:29:27 +02001597 color_fprintf(stdout, color, "\n");
Jiri Olsa99623c62016-04-12 15:29:26 +02001598
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001599 thread__put(sched_in);
1600
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001601 return 0;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001602}
1603
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001604static int process_sched_switch_event(struct perf_tool *tool,
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001605 struct perf_evsel *evsel,
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001606 struct perf_sample *sample,
Arnaldo Carvalho de Melo4218e672012-09-11 13:18:47 -03001607 struct machine *machine)
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001608{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001609 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001610 int this_cpu = sample->cpu, err = 0;
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001611 u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"),
1612 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001613
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001614 if (sched->curr_pid[this_cpu] != (u32)-1) {
Ingo Molnarc8a37752009-09-16 14:07:00 +02001615 /*
1616 * Are we trying to switch away a PID that is
1617 * not current?
1618 */
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001619 if (sched->curr_pid[this_cpu] != prev_pid)
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001620 sched->nr_context_switch_bugs++;
Ingo Molnarc8a37752009-09-16 14:07:00 +02001621 }
Ingo Molnarc8a37752009-09-16 14:07:00 +02001622
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001623 if (sched->tp_handler->switch_event)
1624 err = sched->tp_handler->switch_event(sched, evsel, sample, machine);
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001625
1626 sched->curr_pid[this_cpu] = next_pid;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001627 return err;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001628}
1629
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001630static int process_sched_runtime_event(struct perf_tool *tool,
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001631 struct perf_evsel *evsel,
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001632 struct perf_sample *sample,
Arnaldo Carvalho de Melo4218e672012-09-11 13:18:47 -03001633 struct machine *machine)
mingo39aeb522009-09-14 20:04:48 +02001634{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001635 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
mingo39aeb522009-09-14 20:04:48 +02001636
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001637 if (sched->tp_handler->runtime_event)
1638 return sched->tp_handler->runtime_event(sched, evsel, sample, machine);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001639
1640 return 0;
Ingo Molnarec156762009-09-11 12:12:54 +02001641}
1642
David Aherncb627502013-08-07 22:50:47 -04001643static int perf_sched__process_fork_event(struct perf_tool *tool,
1644 union perf_event *event,
1645 struct perf_sample *sample,
1646 struct machine *machine)
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001647{
1648 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
1649
David Aherncb627502013-08-07 22:50:47 -04001650 /* run the fork event through the perf machineruy */
1651 perf_event__process_fork(tool, event, sample, machine);
1652
1653 /* and then run additional processing needed for this command */
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001654 if (sched->tp_handler->fork_event)
David Aherncb627502013-08-07 22:50:47 -04001655 return sched->tp_handler->fork_event(sched, event, machine);
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001656
1657 return 0;
1658}
1659
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001660static int process_sched_migrate_task_event(struct perf_tool *tool,
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001661 struct perf_evsel *evsel,
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001662 struct perf_sample *sample,
Arnaldo Carvalho de Melo4218e672012-09-11 13:18:47 -03001663 struct machine *machine)
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001664{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001665 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001666
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001667 if (sched->tp_handler->migrate_task_event)
1668 return sched->tp_handler->migrate_task_event(sched, evsel, sample, machine);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001669
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001670 return 0;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001671}
1672
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001673typedef int (*tracepoint_handler)(struct perf_tool *tool,
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001674 struct perf_evsel *evsel,
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001675 struct perf_sample *sample,
Arnaldo Carvalho de Melo4218e672012-09-11 13:18:47 -03001676 struct machine *machine);
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001677
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001678static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_unused,
1679 union perf_event *event __maybe_unused,
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001680 struct perf_sample *sample,
1681 struct perf_evsel *evsel,
1682 struct machine *machine)
Ingo Molnarec156762009-09-11 12:12:54 +02001683{
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001684 int err = 0;
Ingo Molnarec156762009-09-11 12:12:54 +02001685
Arnaldo Carvalho de Melo744a9712013-11-06 10:17:38 -03001686 if (evsel->handler != NULL) {
1687 tracepoint_handler f = evsel->handler;
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001688 err = f(tool, evsel, sample, machine);
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001689 }
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001690
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001691 return err;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001692}
1693
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001694static int perf_sched__read_events(struct perf_sched *sched)
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001695{
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001696 const struct perf_evsel_str_handler handlers[] = {
1697 { "sched:sched_switch", process_sched_switch_event, },
1698 { "sched:sched_stat_runtime", process_sched_runtime_event, },
1699 { "sched:sched_wakeup", process_sched_wakeup_event, },
1700 { "sched:sched_wakeup_new", process_sched_wakeup_event, },
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001701 { "sched:sched_migrate_task", process_sched_migrate_task_event, },
1702 };
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001703 struct perf_session *session;
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001704 struct perf_data_file file = {
1705 .path = input_name,
1706 .mode = PERF_DATA_MODE_READ,
Yunlong Songf0dd3302015-03-31 21:46:35 +08001707 .force = sched->force,
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001708 };
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001709 int rc = -1;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001710
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001711 session = perf_session__new(&file, false, &sched->tool);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001712 if (session == NULL) {
1713 pr_debug("No Memory for session\n");
1714 return -1;
1715 }
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02001716
Namhyung Kim0a7e6d12014-08-12 15:40:45 +09001717 symbol__init(&session->header.env);
Namhyung Kim04934102014-08-12 15:40:41 +09001718
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001719 if (perf_session__set_tracepoints_handlers(session, handlers))
1720 goto out_delete;
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001721
Arnaldo Carvalho de Melocee75ac2010-05-14 13:16:55 -03001722 if (perf_session__has_traces(session, "record -R")) {
Arnaldo Carvalho de Melob7b61cb2015-03-03 11:58:45 -03001723 int err = perf_session__process_events(session);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001724 if (err) {
1725 pr_err("Failed to process events, error %d", err);
1726 goto out_delete;
1727 }
Jiri Olsa4c09baf2011-08-08 23:03:34 +02001728
Arnaldo Carvalho de Melo75be9892015-02-14 14:50:11 -03001729 sched->nr_events = session->evlist->stats.nr_events[0];
1730 sched->nr_lost_events = session->evlist->stats.total_lost;
1731 sched->nr_lost_chunks = session->evlist->stats.nr_events[PERF_RECORD_LOST];
Arnaldo Carvalho de Melocee75ac2010-05-14 13:16:55 -03001732 }
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -02001733
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001734 rc = 0;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001735out_delete:
1736 perf_session__delete(session);
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001737 return rc;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001738}
1739
David Ahern49394a22016-11-16 15:06:29 +09001740/*
1741 * scheduling times are printed as msec.usec
1742 */
1743static inline void print_sched_time(unsigned long long nsecs, int width)
1744{
1745 unsigned long msecs;
1746 unsigned long usecs;
1747
1748 msecs = nsecs / NSEC_PER_MSEC;
1749 nsecs -= msecs * NSEC_PER_MSEC;
1750 usecs = nsecs / NSEC_PER_USEC;
1751 printf("%*lu.%03lu ", width, msecs, usecs);
1752}
1753
1754/*
1755 * returns runtime data for event, allocating memory for it the
1756 * first time it is used.
1757 */
1758static struct evsel_runtime *perf_evsel__get_runtime(struct perf_evsel *evsel)
1759{
1760 struct evsel_runtime *r = evsel->priv;
1761
1762 if (r == NULL) {
1763 r = zalloc(sizeof(struct evsel_runtime));
1764 evsel->priv = r;
1765 }
1766
1767 return r;
1768}
1769
1770/*
1771 * save last time event was seen per cpu
1772 */
1773static void perf_evsel__save_time(struct perf_evsel *evsel,
1774 u64 timestamp, u32 cpu)
1775{
1776 struct evsel_runtime *r = perf_evsel__get_runtime(evsel);
1777
1778 if (r == NULL)
1779 return;
1780
1781 if ((cpu >= r->ncpu) || (r->last_time == NULL)) {
1782 int i, n = __roundup_pow_of_two(cpu+1);
1783 void *p = r->last_time;
1784
1785 p = realloc(r->last_time, n * sizeof(u64));
1786 if (!p)
1787 return;
1788
1789 r->last_time = p;
1790 for (i = r->ncpu; i < n; ++i)
1791 r->last_time[i] = (u64) 0;
1792
1793 r->ncpu = n;
1794 }
1795
1796 r->last_time[cpu] = timestamp;
1797}
1798
1799/* returns last time this event was seen on the given cpu */
1800static u64 perf_evsel__get_time(struct perf_evsel *evsel, u32 cpu)
1801{
1802 struct evsel_runtime *r = perf_evsel__get_runtime(evsel);
1803
1804 if ((r == NULL) || (r->last_time == NULL) || (cpu >= r->ncpu))
1805 return 0;
1806
1807 return r->last_time[cpu];
1808}
1809
Namhyung Kim9b8087d2016-12-22 15:03:48 +09001810static int comm_width = 30;
David Ahern49394a22016-11-16 15:06:29 +09001811
1812static char *timehist_get_commstr(struct thread *thread)
1813{
1814 static char str[32];
1815 const char *comm = thread__comm_str(thread);
1816 pid_t tid = thread->tid;
1817 pid_t pid = thread->pid_;
1818 int n;
1819
1820 if (pid == 0)
1821 n = scnprintf(str, sizeof(str), "%s", comm);
1822
1823 else if (tid != pid)
1824 n = scnprintf(str, sizeof(str), "%s[%d/%d]", comm, tid, pid);
1825
1826 else
1827 n = scnprintf(str, sizeof(str), "%s[%d]", comm, tid);
1828
1829 if (n > comm_width)
1830 comm_width = n;
1831
1832 return str;
1833}
1834
David Aherna407b062016-11-16 15:06:33 +09001835static void timehist_header(struct perf_sched *sched)
David Ahern49394a22016-11-16 15:06:29 +09001836{
David Aherna407b062016-11-16 15:06:33 +09001837 u32 ncpus = sched->max_cpu + 1;
1838 u32 i, j;
1839
David Ahern49394a22016-11-16 15:06:29 +09001840 printf("%15s %6s ", "time", "cpu");
1841
David Aherna407b062016-11-16 15:06:33 +09001842 if (sched->show_cpu_visual) {
1843 printf(" ");
1844 for (i = 0, j = 0; i < ncpus; ++i) {
1845 printf("%x", j++);
1846 if (j > 15)
1847 j = 0;
1848 }
1849 printf(" ");
1850 }
1851
Namhyung Kim0e6758e2016-12-22 15:03:48 +09001852 printf(" %-*s %9s %9s %9s", comm_width,
David Ahern49394a22016-11-16 15:06:29 +09001853 "task name", "wait time", "sch delay", "run time");
1854
Namhyung Kim414e0502017-01-13 19:45:22 +09001855 if (sched->show_state)
1856 printf(" %s", "state");
1857
David Ahern49394a22016-11-16 15:06:29 +09001858 printf("\n");
1859
1860 /*
1861 * units row
1862 */
1863 printf("%15s %-6s ", "", "");
1864
David Aherna407b062016-11-16 15:06:33 +09001865 if (sched->show_cpu_visual)
1866 printf(" %*s ", ncpus, "");
1867
Namhyung Kim414e0502017-01-13 19:45:22 +09001868 printf(" %-*s %9s %9s %9s", comm_width,
Namhyung Kim0e6758e2016-12-22 15:03:48 +09001869 "[tid/pid]", "(msec)", "(msec)", "(msec)");
David Ahern49394a22016-11-16 15:06:29 +09001870
Namhyung Kim414e0502017-01-13 19:45:22 +09001871 if (sched->show_state)
1872 printf(" %5s", "");
1873
1874 printf("\n");
1875
David Ahern49394a22016-11-16 15:06:29 +09001876 /*
1877 * separator
1878 */
1879 printf("%.15s %.6s ", graph_dotted_line, graph_dotted_line);
1880
David Aherna407b062016-11-16 15:06:33 +09001881 if (sched->show_cpu_visual)
1882 printf(" %.*s ", ncpus, graph_dotted_line);
1883
Namhyung Kim0e6758e2016-12-22 15:03:48 +09001884 printf(" %.*s %.9s %.9s %.9s", comm_width,
David Ahern49394a22016-11-16 15:06:29 +09001885 graph_dotted_line, graph_dotted_line, graph_dotted_line,
1886 graph_dotted_line);
1887
Namhyung Kim414e0502017-01-13 19:45:22 +09001888 if (sched->show_state)
1889 printf(" %.5s", graph_dotted_line);
1890
David Ahern49394a22016-11-16 15:06:29 +09001891 printf("\n");
1892}
1893
Namhyung Kim414e0502017-01-13 19:45:22 +09001894static char task_state_char(struct thread *thread, int state)
1895{
1896 static const char state_to_char[] = TASK_STATE_TO_CHAR_STR;
1897 unsigned bit = state ? ffs(state) : 0;
1898
1899 /* 'I' for idle */
1900 if (thread->tid == 0)
1901 return 'I';
1902
1903 return bit < sizeof(state_to_char) - 1 ? state_to_char[bit] : '?';
1904}
1905
David Ahernfc1469f2016-11-16 15:06:31 +09001906static void timehist_print_sample(struct perf_sched *sched,
Brendan Gregg292c4a82017-03-14 01:56:29 +00001907 struct perf_evsel *evsel,
David Ahernfc1469f2016-11-16 15:06:31 +09001908 struct perf_sample *sample,
David Ahern6c973c92016-11-16 15:06:32 +09001909 struct addr_location *al,
David Ahern853b7402016-11-29 10:15:44 -07001910 struct thread *thread,
Namhyung Kim414e0502017-01-13 19:45:22 +09001911 u64 t, int state)
David Ahern49394a22016-11-16 15:06:29 +09001912{
1913 struct thread_runtime *tr = thread__priv(thread);
Brendan Gregg292c4a82017-03-14 01:56:29 +00001914 const char *next_comm = perf_evsel__strval(evsel, sample, "next_comm");
1915 const u32 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
David Aherna407b062016-11-16 15:06:33 +09001916 u32 max_cpus = sched->max_cpu + 1;
David Ahern49394a22016-11-16 15:06:29 +09001917 char tstr[64];
Brendan Gregg292c4a82017-03-14 01:56:29 +00001918 char nstr[30];
Namhyung Kim941bdea2017-01-13 19:45:21 +09001919 u64 wait_time;
David Ahern49394a22016-11-16 15:06:29 +09001920
David Ahern853b7402016-11-29 10:15:44 -07001921 timestamp__scnprintf_usec(t, tstr, sizeof(tstr));
David Ahern49394a22016-11-16 15:06:29 +09001922 printf("%15s [%04d] ", tstr, sample->cpu);
1923
David Aherna407b062016-11-16 15:06:33 +09001924 if (sched->show_cpu_visual) {
1925 u32 i;
1926 char c;
1927
1928 printf(" ");
1929 for (i = 0; i < max_cpus; ++i) {
1930 /* flag idle times with 'i'; others are sched events */
1931 if (i == sample->cpu)
1932 c = (thread->tid == 0) ? 'i' : 's';
1933 else
1934 c = ' ';
1935 printf("%c", c);
1936 }
1937 printf(" ");
1938 }
1939
David Ahern49394a22016-11-16 15:06:29 +09001940 printf(" %-*s ", comm_width, timehist_get_commstr(thread));
1941
Namhyung Kim941bdea2017-01-13 19:45:21 +09001942 wait_time = tr->dt_sleep + tr->dt_iowait + tr->dt_preempt;
1943 print_sched_time(wait_time, 6);
1944
David Ahern49394a22016-11-16 15:06:29 +09001945 print_sched_time(tr->dt_delay, 6);
1946 print_sched_time(tr->dt_run, 6);
David Ahernfc1469f2016-11-16 15:06:31 +09001947
Namhyung Kim414e0502017-01-13 19:45:22 +09001948 if (sched->show_state)
1949 printf(" %5c ", task_state_char(thread, state));
1950
Brendan Gregg292c4a82017-03-14 01:56:29 +00001951 if (sched->show_next) {
1952 snprintf(nstr, sizeof(nstr), "next: %s[%d]", next_comm, next_pid);
1953 printf(" %-*s", comm_width, nstr);
1954 }
1955
1956 if (sched->show_wakeups && !sched->show_next)
David Ahernfc1469f2016-11-16 15:06:31 +09001957 printf(" %-*s", comm_width, "");
1958
David Ahern6c973c92016-11-16 15:06:32 +09001959 if (thread->tid == 0)
1960 goto out;
1961
1962 if (sched->show_callchain)
1963 printf(" ");
1964
1965 sample__fprintf_sym(sample, al, 0,
1966 EVSEL__PRINT_SYM | EVSEL__PRINT_ONELINE |
Namhyung Kim2d9bbf62016-11-24 10:11:13 +09001967 EVSEL__PRINT_CALLCHAIN_ARROW |
1968 EVSEL__PRINT_SKIP_IGNORED,
David Ahern6c973c92016-11-16 15:06:32 +09001969 &callchain_cursor, stdout);
1970
1971out:
David Ahern49394a22016-11-16 15:06:29 +09001972 printf("\n");
1973}
1974
1975/*
1976 * Explanation of delta-time stats:
1977 *
1978 * t = time of current schedule out event
1979 * tprev = time of previous sched out event
1980 * also time of schedule-in event for current task
1981 * last_time = time of last sched change event for current task
1982 * (i.e, time process was last scheduled out)
1983 * ready_to_run = time of wakeup for current task
1984 *
1985 * -----|------------|------------|------------|------
1986 * last ready tprev t
1987 * time to run
1988 *
1989 * |-------- dt_wait --------|
1990 * |- dt_delay -|-- dt_run --|
1991 *
1992 * dt_run = run time of current task
1993 * dt_wait = time between last schedule out event for task and tprev
1994 * represents time spent off the cpu
1995 * dt_delay = time between wakeup and schedule-in of task
1996 */
1997
1998static void timehist_update_runtime_stats(struct thread_runtime *r,
1999 u64 t, u64 tprev)
2000{
2001 r->dt_delay = 0;
Namhyung Kim941bdea2017-01-13 19:45:21 +09002002 r->dt_sleep = 0;
2003 r->dt_iowait = 0;
2004 r->dt_preempt = 0;
David Ahern49394a22016-11-16 15:06:29 +09002005 r->dt_run = 0;
Namhyung Kim941bdea2017-01-13 19:45:21 +09002006
David Ahern49394a22016-11-16 15:06:29 +09002007 if (tprev) {
2008 r->dt_run = t - tprev;
2009 if (r->ready_to_run) {
2010 if (r->ready_to_run > tprev)
2011 pr_debug("time travel: wakeup time for task > previous sched_switch event\n");
2012 else
2013 r->dt_delay = tprev - r->ready_to_run;
2014 }
2015
2016 if (r->last_time > tprev)
2017 pr_debug("time travel: last sched out time for task > previous sched_switch event\n");
Namhyung Kim941bdea2017-01-13 19:45:21 +09002018 else if (r->last_time) {
2019 u64 dt_wait = tprev - r->last_time;
2020
2021 if (r->last_state == TASK_RUNNING)
2022 r->dt_preempt = dt_wait;
2023 else if (r->last_state == TASK_UNINTERRUPTIBLE)
2024 r->dt_iowait = dt_wait;
2025 else
2026 r->dt_sleep = dt_wait;
2027 }
David Ahern49394a22016-11-16 15:06:29 +09002028 }
2029
2030 update_stats(&r->run_stats, r->dt_run);
Namhyung Kim587782c2017-01-13 19:45:23 +09002031
2032 r->total_run_time += r->dt_run;
2033 r->total_delay_time += r->dt_delay;
2034 r->total_sleep_time += r->dt_sleep;
2035 r->total_iowait_time += r->dt_iowait;
2036 r->total_preempt_time += r->dt_preempt;
David Ahern49394a22016-11-16 15:06:29 +09002037}
2038
Namhyung Kim96039c72016-12-08 23:47:50 +09002039static bool is_idle_sample(struct perf_sample *sample,
2040 struct perf_evsel *evsel)
David Ahern49394a22016-11-16 15:06:29 +09002041{
2042 /* pid 0 == swapper == idle task */
Namhyung Kim96039c72016-12-08 23:47:50 +09002043 if (strcmp(perf_evsel__name(evsel), "sched:sched_switch") == 0)
2044 return perf_evsel__intval(evsel, sample, "prev_pid") == 0;
David Ahern49394a22016-11-16 15:06:29 +09002045
Namhyung Kim96039c72016-12-08 23:47:50 +09002046 return sample->pid == 0;
2047}
2048
2049static void save_task_callchain(struct perf_sched *sched,
2050 struct perf_sample *sample,
2051 struct perf_evsel *evsel,
2052 struct machine *machine)
2053{
2054 struct callchain_cursor *cursor = &callchain_cursor;
2055 struct thread *thread;
David Ahern6c973c92016-11-16 15:06:32 +09002056
2057 /* want main thread for process - has maps */
2058 thread = machine__findnew_thread(machine, sample->pid, sample->pid);
2059 if (thread == NULL) {
2060 pr_debug("Failed to get thread for pid %d.\n", sample->pid);
Namhyung Kim96039c72016-12-08 23:47:50 +09002061 return;
David Ahern6c973c92016-11-16 15:06:32 +09002062 }
2063
2064 if (!symbol_conf.use_callchain || sample->callchain == NULL)
Namhyung Kim96039c72016-12-08 23:47:50 +09002065 return;
David Ahern6c973c92016-11-16 15:06:32 +09002066
2067 if (thread__resolve_callchain(thread, cursor, evsel, sample,
Namhyung Kim8388deb2016-11-24 10:11:14 +09002068 NULL, NULL, sched->max_stack + 2) != 0) {
Namhyung Kimbb963e12017-02-17 17:17:38 +09002069 if (verbose > 0)
Arnaldo Carvalho de Melo62d94b02017-06-27 11:22:31 -03002070 pr_err("Failed to resolve callchain. Skipping\n");
David Ahern6c973c92016-11-16 15:06:32 +09002071
Namhyung Kim96039c72016-12-08 23:47:50 +09002072 return;
David Ahern6c973c92016-11-16 15:06:32 +09002073 }
Namhyung Kimcdeb01b2016-11-24 10:11:12 +09002074
David Ahern6c973c92016-11-16 15:06:32 +09002075 callchain_cursor_commit(cursor);
Namhyung Kimcdeb01b2016-11-24 10:11:12 +09002076
2077 while (true) {
2078 struct callchain_cursor_node *node;
2079 struct symbol *sym;
2080
2081 node = callchain_cursor_current(cursor);
2082 if (node == NULL)
2083 break;
2084
2085 sym = node->sym;
Arnaldo Carvalho de Meloa7c38992017-02-13 16:52:15 -03002086 if (sym) {
Namhyung Kimcdeb01b2016-11-24 10:11:12 +09002087 if (!strcmp(sym->name, "schedule") ||
2088 !strcmp(sym->name, "__schedule") ||
2089 !strcmp(sym->name, "preempt_schedule"))
2090 sym->ignore = 1;
2091 }
2092
2093 callchain_cursor_advance(cursor);
2094 }
David Ahern49394a22016-11-16 15:06:29 +09002095}
2096
Namhyung Kim3bc2fa92016-12-08 23:47:51 +09002097static int init_idle_thread(struct thread *thread)
2098{
2099 struct idle_thread_runtime *itr;
2100
2101 thread__set_comm(thread, idle_comm, 0);
2102
2103 itr = zalloc(sizeof(*itr));
2104 if (itr == NULL)
2105 return -ENOMEM;
2106
2107 init_stats(&itr->tr.run_stats);
2108 callchain_init(&itr->callchain);
2109 callchain_cursor_reset(&itr->cursor);
2110 thread__set_priv(thread, itr);
2111
2112 return 0;
2113}
2114
David Ahern49394a22016-11-16 15:06:29 +09002115/*
2116 * Track idle stats per cpu by maintaining a local thread
2117 * struct for the idle task on each cpu.
2118 */
2119static int init_idle_threads(int ncpu)
2120{
Namhyung Kim3bc2fa92016-12-08 23:47:51 +09002121 int i, ret;
David Ahern49394a22016-11-16 15:06:29 +09002122
2123 idle_threads = zalloc(ncpu * sizeof(struct thread *));
2124 if (!idle_threads)
2125 return -ENOMEM;
2126
Namhyung Kimb3363522016-12-06 12:40:05 +09002127 idle_max_cpu = ncpu;
David Ahern49394a22016-11-16 15:06:29 +09002128
2129 /* allocate the actual thread struct if needed */
2130 for (i = 0; i < ncpu; ++i) {
2131 idle_threads[i] = thread__new(0, 0);
2132 if (idle_threads[i] == NULL)
2133 return -ENOMEM;
2134
Namhyung Kim3bc2fa92016-12-08 23:47:51 +09002135 ret = init_idle_thread(idle_threads[i]);
2136 if (ret < 0)
2137 return ret;
David Ahern49394a22016-11-16 15:06:29 +09002138 }
2139
2140 return 0;
2141}
2142
2143static void free_idle_threads(void)
2144{
2145 int i;
2146
2147 if (idle_threads == NULL)
2148 return;
2149
Namhyung Kimb3363522016-12-06 12:40:05 +09002150 for (i = 0; i < idle_max_cpu; ++i) {
David Ahern49394a22016-11-16 15:06:29 +09002151 if ((idle_threads[i]))
2152 thread__delete(idle_threads[i]);
2153 }
2154
2155 free(idle_threads);
2156}
2157
2158static struct thread *get_idle_thread(int cpu)
2159{
2160 /*
2161 * expand/allocate array of pointers to local thread
2162 * structs if needed
2163 */
2164 if ((cpu >= idle_max_cpu) || (idle_threads == NULL)) {
2165 int i, j = __roundup_pow_of_two(cpu+1);
2166 void *p;
2167
2168 p = realloc(idle_threads, j * sizeof(struct thread *));
2169 if (!p)
2170 return NULL;
2171
2172 idle_threads = (struct thread **) p;
Namhyung Kimb3363522016-12-06 12:40:05 +09002173 for (i = idle_max_cpu; i < j; ++i)
David Ahern49394a22016-11-16 15:06:29 +09002174 idle_threads[i] = NULL;
2175
2176 idle_max_cpu = j;
2177 }
2178
2179 /* allocate a new thread struct if needed */
2180 if (idle_threads[cpu] == NULL) {
2181 idle_threads[cpu] = thread__new(0, 0);
2182
2183 if (idle_threads[cpu]) {
Namhyung Kim3bc2fa92016-12-08 23:47:51 +09002184 if (init_idle_thread(idle_threads[cpu]) < 0)
2185 return NULL;
David Ahern49394a22016-11-16 15:06:29 +09002186 }
2187 }
2188
2189 return idle_threads[cpu];
2190}
2191
Namhyung Kim699b5b92016-12-08 23:47:52 +09002192static void save_idle_callchain(struct idle_thread_runtime *itr,
2193 struct perf_sample *sample)
2194{
2195 if (!symbol_conf.use_callchain || sample->callchain == NULL)
2196 return;
2197
2198 callchain_cursor__copy(&itr->cursor, &callchain_cursor);
2199}
2200
David Ahern49394a22016-11-16 15:06:29 +09002201/*
2202 * handle runtime stats saved per thread
2203 */
2204static struct thread_runtime *thread__init_runtime(struct thread *thread)
2205{
2206 struct thread_runtime *r;
2207
2208 r = zalloc(sizeof(struct thread_runtime));
2209 if (!r)
2210 return NULL;
2211
2212 init_stats(&r->run_stats);
2213 thread__set_priv(thread, r);
2214
2215 return r;
2216}
2217
2218static struct thread_runtime *thread__get_runtime(struct thread *thread)
2219{
2220 struct thread_runtime *tr;
2221
2222 tr = thread__priv(thread);
2223 if (tr == NULL) {
2224 tr = thread__init_runtime(thread);
2225 if (tr == NULL)
2226 pr_debug("Failed to malloc memory for runtime data.\n");
2227 }
2228
2229 return tr;
2230}
2231
David Ahern6c973c92016-11-16 15:06:32 +09002232static struct thread *timehist_get_thread(struct perf_sched *sched,
2233 struct perf_sample *sample,
David Ahern49394a22016-11-16 15:06:29 +09002234 struct machine *machine,
2235 struct perf_evsel *evsel)
2236{
2237 struct thread *thread;
2238
Namhyung Kim96039c72016-12-08 23:47:50 +09002239 if (is_idle_sample(sample, evsel)) {
David Ahern49394a22016-11-16 15:06:29 +09002240 thread = get_idle_thread(sample->cpu);
2241 if (thread == NULL)
2242 pr_err("Failed to get idle thread for cpu %d.\n", sample->cpu);
2243
2244 } else {
Namhyung Kim5d92d962016-12-06 12:40:03 +09002245 /* there were samples with tid 0 but non-zero pid */
2246 thread = machine__findnew_thread(machine, sample->pid,
2247 sample->tid ?: sample->pid);
David Ahern49394a22016-11-16 15:06:29 +09002248 if (thread == NULL) {
2249 pr_debug("Failed to get thread for tid %d. skipping sample.\n",
2250 sample->tid);
2251 }
Namhyung Kim96039c72016-12-08 23:47:50 +09002252
2253 save_task_callchain(sched, sample, evsel, machine);
Namhyung Kim699b5b92016-12-08 23:47:52 +09002254 if (sched->idle_hist) {
2255 struct thread *idle;
2256 struct idle_thread_runtime *itr;
2257
2258 idle = get_idle_thread(sample->cpu);
2259 if (idle == NULL) {
2260 pr_err("Failed to get idle thread for cpu %d.\n", sample->cpu);
2261 return NULL;
2262 }
2263
2264 itr = thread__priv(idle);
2265 if (itr == NULL)
2266 return NULL;
2267
2268 itr->last_thread = thread;
2269
2270 /* copy task callchain when entering to idle */
2271 if (perf_evsel__intval(evsel, sample, "next_pid") == 0)
2272 save_idle_callchain(itr, sample);
2273 }
David Ahern49394a22016-11-16 15:06:29 +09002274 }
2275
2276 return thread;
2277}
2278
David Ahern52df1382016-11-16 15:06:30 +09002279static bool timehist_skip_sample(struct perf_sched *sched,
Namhyung Kima4b2b6f2016-12-08 23:47:53 +09002280 struct thread *thread,
2281 struct perf_evsel *evsel,
2282 struct perf_sample *sample)
David Ahern49394a22016-11-16 15:06:29 +09002283{
2284 bool rc = false;
2285
David Ahern52df1382016-11-16 15:06:30 +09002286 if (thread__is_filtered(thread)) {
David Ahern49394a22016-11-16 15:06:29 +09002287 rc = true;
David Ahern52df1382016-11-16 15:06:30 +09002288 sched->skipped_samples++;
2289 }
David Ahern49394a22016-11-16 15:06:29 +09002290
Namhyung Kima4b2b6f2016-12-08 23:47:53 +09002291 if (sched->idle_hist) {
2292 if (strcmp(perf_evsel__name(evsel), "sched:sched_switch"))
2293 rc = true;
2294 else if (perf_evsel__intval(evsel, sample, "prev_pid") != 0 &&
2295 perf_evsel__intval(evsel, sample, "next_pid") != 0)
2296 rc = true;
2297 }
2298
David Ahern49394a22016-11-16 15:06:29 +09002299 return rc;
2300}
2301
David Ahernfc1469f2016-11-16 15:06:31 +09002302static void timehist_print_wakeup_event(struct perf_sched *sched,
Namhyung Kima4b2b6f2016-12-08 23:47:53 +09002303 struct perf_evsel *evsel,
David Ahernfc1469f2016-11-16 15:06:31 +09002304 struct perf_sample *sample,
2305 struct machine *machine,
2306 struct thread *awakened)
2307{
2308 struct thread *thread;
2309 char tstr[64];
2310
2311 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
2312 if (thread == NULL)
2313 return;
2314
2315 /* show wakeup unless both awakee and awaker are filtered */
Namhyung Kima4b2b6f2016-12-08 23:47:53 +09002316 if (timehist_skip_sample(sched, thread, evsel, sample) &&
2317 timehist_skip_sample(sched, awakened, evsel, sample)) {
David Ahernfc1469f2016-11-16 15:06:31 +09002318 return;
2319 }
2320
2321 timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr));
2322 printf("%15s [%04d] ", tstr, sample->cpu);
David Aherna407b062016-11-16 15:06:33 +09002323 if (sched->show_cpu_visual)
2324 printf(" %*s ", sched->max_cpu + 1, "");
David Ahernfc1469f2016-11-16 15:06:31 +09002325
2326 printf(" %-*s ", comm_width, timehist_get_commstr(thread));
2327
2328 /* dt spacer */
2329 printf(" %9s %9s %9s ", "", "", "");
2330
2331 printf("awakened: %s", timehist_get_commstr(awakened));
2332
2333 printf("\n");
2334}
2335
2336static int timehist_sched_wakeup_event(struct perf_tool *tool,
David Ahern49394a22016-11-16 15:06:29 +09002337 union perf_event *event __maybe_unused,
2338 struct perf_evsel *evsel,
2339 struct perf_sample *sample,
2340 struct machine *machine)
2341{
David Ahernfc1469f2016-11-16 15:06:31 +09002342 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
David Ahern49394a22016-11-16 15:06:29 +09002343 struct thread *thread;
2344 struct thread_runtime *tr = NULL;
2345 /* want pid of awakened task not pid in sample */
2346 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
2347
2348 thread = machine__findnew_thread(machine, 0, pid);
2349 if (thread == NULL)
2350 return -1;
2351
2352 tr = thread__get_runtime(thread);
2353 if (tr == NULL)
2354 return -1;
2355
2356 if (tr->ready_to_run == 0)
2357 tr->ready_to_run = sample->time;
2358
David Ahernfc1469f2016-11-16 15:06:31 +09002359 /* show wakeups if requested */
David Ahern853b7402016-11-29 10:15:44 -07002360 if (sched->show_wakeups &&
2361 !perf_time__skip_sample(&sched->ptime, sample->time))
Namhyung Kima4b2b6f2016-12-08 23:47:53 +09002362 timehist_print_wakeup_event(sched, evsel, sample, machine, thread);
David Ahernfc1469f2016-11-16 15:06:31 +09002363
David Ahern49394a22016-11-16 15:06:29 +09002364 return 0;
2365}
2366
David Ahern350f54f2016-11-25 09:28:41 -07002367static void timehist_print_migration_event(struct perf_sched *sched,
2368 struct perf_evsel *evsel,
2369 struct perf_sample *sample,
2370 struct machine *machine,
2371 struct thread *migrated)
2372{
2373 struct thread *thread;
2374 char tstr[64];
2375 u32 max_cpus = sched->max_cpu + 1;
2376 u32 ocpu, dcpu;
2377
2378 if (sched->summary_only)
2379 return;
2380
2381 max_cpus = sched->max_cpu + 1;
2382 ocpu = perf_evsel__intval(evsel, sample, "orig_cpu");
2383 dcpu = perf_evsel__intval(evsel, sample, "dest_cpu");
2384
2385 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
2386 if (thread == NULL)
2387 return;
2388
Namhyung Kima4b2b6f2016-12-08 23:47:53 +09002389 if (timehist_skip_sample(sched, thread, evsel, sample) &&
2390 timehist_skip_sample(sched, migrated, evsel, sample)) {
David Ahern350f54f2016-11-25 09:28:41 -07002391 return;
2392 }
2393
2394 timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr));
2395 printf("%15s [%04d] ", tstr, sample->cpu);
2396
2397 if (sched->show_cpu_visual) {
2398 u32 i;
2399 char c;
2400
2401 printf(" ");
2402 for (i = 0; i < max_cpus; ++i) {
2403 c = (i == sample->cpu) ? 'm' : ' ';
2404 printf("%c", c);
2405 }
2406 printf(" ");
2407 }
2408
2409 printf(" %-*s ", comm_width, timehist_get_commstr(thread));
2410
2411 /* dt spacer */
2412 printf(" %9s %9s %9s ", "", "", "");
2413
2414 printf("migrated: %s", timehist_get_commstr(migrated));
2415 printf(" cpu %d => %d", ocpu, dcpu);
2416
2417 printf("\n");
2418}
2419
2420static int timehist_migrate_task_event(struct perf_tool *tool,
2421 union perf_event *event __maybe_unused,
2422 struct perf_evsel *evsel,
2423 struct perf_sample *sample,
2424 struct machine *machine)
2425{
2426 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
2427 struct thread *thread;
2428 struct thread_runtime *tr = NULL;
2429 /* want pid of migrated task not pid in sample */
2430 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
2431
2432 thread = machine__findnew_thread(machine, 0, pid);
2433 if (thread == NULL)
2434 return -1;
2435
2436 tr = thread__get_runtime(thread);
2437 if (tr == NULL)
2438 return -1;
2439
2440 tr->migrations++;
2441
2442 /* show migrations if requested */
2443 timehist_print_migration_event(sched, evsel, sample, machine, thread);
2444
2445 return 0;
2446}
2447
David Ahern52df1382016-11-16 15:06:30 +09002448static int timehist_sched_change_event(struct perf_tool *tool,
David Ahern49394a22016-11-16 15:06:29 +09002449 union perf_event *event,
2450 struct perf_evsel *evsel,
2451 struct perf_sample *sample,
2452 struct machine *machine)
2453{
David Ahernfc1469f2016-11-16 15:06:31 +09002454 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
David Ahern853b7402016-11-29 10:15:44 -07002455 struct perf_time_interval *ptime = &sched->ptime;
David Ahern49394a22016-11-16 15:06:29 +09002456 struct addr_location al;
2457 struct thread *thread;
2458 struct thread_runtime *tr = NULL;
David Ahern853b7402016-11-29 10:15:44 -07002459 u64 tprev, t = sample->time;
David Ahern49394a22016-11-16 15:06:29 +09002460 int rc = 0;
Namhyung Kim414e0502017-01-13 19:45:22 +09002461 int state = perf_evsel__intval(evsel, sample, "prev_state");
2462
David Ahern49394a22016-11-16 15:06:29 +09002463
2464 if (machine__resolve(machine, &al, sample) < 0) {
2465 pr_err("problem processing %d event. skipping it\n",
2466 event->header.type);
2467 rc = -1;
2468 goto out;
2469 }
2470
David Ahern6c973c92016-11-16 15:06:32 +09002471 thread = timehist_get_thread(sched, sample, machine, evsel);
David Ahern49394a22016-11-16 15:06:29 +09002472 if (thread == NULL) {
2473 rc = -1;
2474 goto out;
2475 }
2476
Namhyung Kima4b2b6f2016-12-08 23:47:53 +09002477 if (timehist_skip_sample(sched, thread, evsel, sample))
David Ahern49394a22016-11-16 15:06:29 +09002478 goto out;
2479
2480 tr = thread__get_runtime(thread);
2481 if (tr == NULL) {
2482 rc = -1;
2483 goto out;
2484 }
2485
2486 tprev = perf_evsel__get_time(evsel, sample->cpu);
2487
David Ahern853b7402016-11-29 10:15:44 -07002488 /*
2489 * If start time given:
2490 * - sample time is under window user cares about - skip sample
2491 * - tprev is under window user cares about - reset to start of window
2492 */
2493 if (ptime->start && ptime->start > t)
2494 goto out;
2495
Namhyung Kimbdd75722016-12-22 15:03:49 +09002496 if (tprev && ptime->start > tprev)
David Ahern853b7402016-11-29 10:15:44 -07002497 tprev = ptime->start;
2498
2499 /*
2500 * If end time given:
2501 * - previous sched event is out of window - we are done
2502 * - sample time is beyond window user cares about - reset it
2503 * to close out stats for time window interest
2504 */
2505 if (ptime->end) {
2506 if (tprev > ptime->end)
2507 goto out;
2508
2509 if (t > ptime->end)
2510 t = ptime->end;
2511 }
2512
Namhyung Kim07235f82016-12-08 23:47:54 +09002513 if (!sched->idle_hist || thread->tid == 0) {
2514 timehist_update_runtime_stats(tr, t, tprev);
2515
2516 if (sched->idle_hist) {
2517 struct idle_thread_runtime *itr = (void *)tr;
2518 struct thread_runtime *last_tr;
2519
2520 BUG_ON(thread->tid != 0);
2521
2522 if (itr->last_thread == NULL)
2523 goto out;
2524
2525 /* add current idle time as last thread's runtime */
2526 last_tr = thread__get_runtime(itr->last_thread);
2527 if (last_tr == NULL)
2528 goto out;
2529
2530 timehist_update_runtime_stats(last_tr, t, tprev);
2531 /*
2532 * remove delta time of last thread as it's not updated
2533 * and otherwise it will show an invalid value next
2534 * time. we only care total run time and run stat.
2535 */
2536 last_tr->dt_run = 0;
Namhyung Kim07235f82016-12-08 23:47:54 +09002537 last_tr->dt_delay = 0;
Namhyung Kim941bdea2017-01-13 19:45:21 +09002538 last_tr->dt_sleep = 0;
2539 last_tr->dt_iowait = 0;
2540 last_tr->dt_preempt = 0;
Namhyung Kim07235f82016-12-08 23:47:54 +09002541
Namhyung Kimba957eb2016-12-08 23:47:55 +09002542 if (itr->cursor.nr)
2543 callchain_append(&itr->callchain, &itr->cursor, t - tprev);
2544
Namhyung Kim07235f82016-12-08 23:47:54 +09002545 itr->last_thread = NULL;
2546 }
2547 }
David Ahern853b7402016-11-29 10:15:44 -07002548
David Ahern52df1382016-11-16 15:06:30 +09002549 if (!sched->summary_only)
Brendan Gregg292c4a82017-03-14 01:56:29 +00002550 timehist_print_sample(sched, evsel, sample, &al, thread, t, state);
David Ahern49394a22016-11-16 15:06:29 +09002551
2552out:
Namhyung Kim9396c9c2016-12-22 15:03:50 +09002553 if (sched->hist_time.start == 0 && t >= ptime->start)
2554 sched->hist_time.start = t;
2555 if (ptime->end == 0 || t <= ptime->end)
2556 sched->hist_time.end = t;
2557
David Ahern49394a22016-11-16 15:06:29 +09002558 if (tr) {
2559 /* time of this sched_switch event becomes last time task seen */
2560 tr->last_time = sample->time;
2561
Namhyung Kim941bdea2017-01-13 19:45:21 +09002562 /* last state is used to determine where to account wait time */
Namhyung Kim414e0502017-01-13 19:45:22 +09002563 tr->last_state = state;
Namhyung Kim941bdea2017-01-13 19:45:21 +09002564
David Ahern49394a22016-11-16 15:06:29 +09002565 /* sched out event for task so reset ready to run time */
2566 tr->ready_to_run = 0;
2567 }
2568
2569 perf_evsel__save_time(evsel, sample->time, sample->cpu);
2570
2571 return rc;
2572}
2573
2574static int timehist_sched_switch_event(struct perf_tool *tool,
2575 union perf_event *event,
2576 struct perf_evsel *evsel,
2577 struct perf_sample *sample,
2578 struct machine *machine __maybe_unused)
2579{
2580 return timehist_sched_change_event(tool, event, evsel, sample, machine);
2581}
2582
2583static int process_lost(struct perf_tool *tool __maybe_unused,
2584 union perf_event *event,
2585 struct perf_sample *sample,
2586 struct machine *machine __maybe_unused)
2587{
2588 char tstr[64];
2589
2590 timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr));
2591 printf("%15s ", tstr);
2592 printf("lost %" PRIu64 " events on cpu %d\n", event->lost.lost, sample->cpu);
2593
2594 return 0;
2595}
2596
2597
David Ahern52df1382016-11-16 15:06:30 +09002598static void print_thread_runtime(struct thread *t,
2599 struct thread_runtime *r)
2600{
2601 double mean = avg_stats(&r->run_stats);
2602 float stddev;
2603
2604 printf("%*s %5d %9" PRIu64 " ",
2605 comm_width, timehist_get_commstr(t), t->ppid,
2606 (u64) r->run_stats.n);
2607
2608 print_sched_time(r->total_run_time, 8);
2609 stddev = rel_stddev_stats(stddev_stats(&r->run_stats), mean);
2610 print_sched_time(r->run_stats.min, 6);
2611 printf(" ");
2612 print_sched_time((u64) mean, 6);
2613 printf(" ");
2614 print_sched_time(r->run_stats.max, 6);
2615 printf(" ");
2616 printf("%5.2f", stddev);
David Ahern350f54f2016-11-25 09:28:41 -07002617 printf(" %5" PRIu64, r->migrations);
David Ahern52df1382016-11-16 15:06:30 +09002618 printf("\n");
2619}
2620
Namhyung Kim587782c2017-01-13 19:45:23 +09002621static void print_thread_waittime(struct thread *t,
2622 struct thread_runtime *r)
2623{
2624 printf("%*s %5d %9" PRIu64 " ",
2625 comm_width, timehist_get_commstr(t), t->ppid,
2626 (u64) r->run_stats.n);
2627
2628 print_sched_time(r->total_run_time, 8);
2629 print_sched_time(r->total_sleep_time, 6);
2630 printf(" ");
2631 print_sched_time(r->total_iowait_time, 6);
2632 printf(" ");
2633 print_sched_time(r->total_preempt_time, 6);
2634 printf(" ");
2635 print_sched_time(r->total_delay_time, 6);
2636 printf("\n");
2637}
2638
David Ahern52df1382016-11-16 15:06:30 +09002639struct total_run_stats {
Namhyung Kim587782c2017-01-13 19:45:23 +09002640 struct perf_sched *sched;
David Ahern52df1382016-11-16 15:06:30 +09002641 u64 sched_count;
2642 u64 task_count;
2643 u64 total_run_time;
2644};
2645
2646static int __show_thread_runtime(struct thread *t, void *priv)
2647{
2648 struct total_run_stats *stats = priv;
2649 struct thread_runtime *r;
2650
2651 if (thread__is_filtered(t))
2652 return 0;
2653
2654 r = thread__priv(t);
2655 if (r && r->run_stats.n) {
2656 stats->task_count++;
2657 stats->sched_count += r->run_stats.n;
2658 stats->total_run_time += r->total_run_time;
Namhyung Kim587782c2017-01-13 19:45:23 +09002659
2660 if (stats->sched->show_state)
2661 print_thread_waittime(t, r);
2662 else
2663 print_thread_runtime(t, r);
David Ahern52df1382016-11-16 15:06:30 +09002664 }
2665
2666 return 0;
2667}
2668
2669static int show_thread_runtime(struct thread *t, void *priv)
2670{
2671 if (t->dead)
2672 return 0;
2673
2674 return __show_thread_runtime(t, priv);
2675}
2676
2677static int show_deadthread_runtime(struct thread *t, void *priv)
2678{
2679 if (!t->dead)
2680 return 0;
2681
2682 return __show_thread_runtime(t, priv);
2683}
2684
Namhyung Kimba957eb2016-12-08 23:47:55 +09002685static size_t callchain__fprintf_folded(FILE *fp, struct callchain_node *node)
2686{
2687 const char *sep = " <- ";
2688 struct callchain_list *chain;
2689 size_t ret = 0;
2690 char bf[1024];
2691 bool first;
2692
2693 if (node == NULL)
2694 return 0;
2695
2696 ret = callchain__fprintf_folded(fp, node->parent);
2697 first = (ret == 0);
2698
2699 list_for_each_entry(chain, &node->val, list) {
2700 if (chain->ip >= PERF_CONTEXT_MAX)
2701 continue;
2702 if (chain->ms.sym && chain->ms.sym->ignore)
2703 continue;
2704 ret += fprintf(fp, "%s%s", first ? "" : sep,
2705 callchain_list__sym_name(chain, bf, sizeof(bf),
2706 false));
2707 first = false;
2708 }
2709
2710 return ret;
2711}
2712
2713static size_t timehist_print_idlehist_callchain(struct rb_root *root)
2714{
2715 size_t ret = 0;
2716 FILE *fp = stdout;
2717 struct callchain_node *chain;
2718 struct rb_node *rb_node = rb_first(root);
2719
2720 printf(" %16s %8s %s\n", "Idle time (msec)", "Count", "Callchains");
2721 printf(" %.16s %.8s %.50s\n", graph_dotted_line, graph_dotted_line,
2722 graph_dotted_line);
2723
2724 while (rb_node) {
2725 chain = rb_entry(rb_node, struct callchain_node, rb_node);
2726 rb_node = rb_next(rb_node);
2727
2728 ret += fprintf(fp, " ");
2729 print_sched_time(chain->hit, 12);
2730 ret += 16; /* print_sched_time returns 2nd arg + 4 */
2731 ret += fprintf(fp, " %8d ", chain->count);
2732 ret += callchain__fprintf_folded(fp, chain);
2733 ret += fprintf(fp, "\n");
2734 }
2735
2736 return ret;
2737}
2738
David Ahern52df1382016-11-16 15:06:30 +09002739static void timehist_print_summary(struct perf_sched *sched,
2740 struct perf_session *session)
2741{
2742 struct machine *m = &session->machines.host;
2743 struct total_run_stats totals;
2744 u64 task_count;
2745 struct thread *t;
2746 struct thread_runtime *r;
2747 int i;
Namhyung Kim9396c9c2016-12-22 15:03:50 +09002748 u64 hist_time = sched->hist_time.end - sched->hist_time.start;
David Ahern52df1382016-11-16 15:06:30 +09002749
2750 memset(&totals, 0, sizeof(totals));
Namhyung Kim587782c2017-01-13 19:45:23 +09002751 totals.sched = sched;
David Ahern52df1382016-11-16 15:06:30 +09002752
Namhyung Kim07235f82016-12-08 23:47:54 +09002753 if (sched->idle_hist) {
2754 printf("\nIdle-time summary\n");
2755 printf("%*s parent sched-out ", comm_width, "comm");
2756 printf(" idle-time min-idle avg-idle max-idle stddev migrations\n");
Namhyung Kim587782c2017-01-13 19:45:23 +09002757 } else if (sched->show_state) {
2758 printf("\nWait-time summary\n");
2759 printf("%*s parent sched-in ", comm_width, "comm");
2760 printf(" run-time sleep iowait preempt delay\n");
Namhyung Kim07235f82016-12-08 23:47:54 +09002761 } else {
2762 printf("\nRuntime summary\n");
2763 printf("%*s parent sched-in ", comm_width, "comm");
2764 printf(" run-time min-run avg-run max-run stddev migrations\n");
2765 }
David Ahern52df1382016-11-16 15:06:30 +09002766 printf("%*s (count) ", comm_width, "");
Namhyung Kim587782c2017-01-13 19:45:23 +09002767 printf(" (msec) (msec) (msec) (msec) %s\n",
2768 sched->show_state ? "(msec)" : "%");
David Ahern350f54f2016-11-25 09:28:41 -07002769 printf("%.117s\n", graph_dotted_line);
David Ahern52df1382016-11-16 15:06:30 +09002770
2771 machine__for_each_thread(m, show_thread_runtime, &totals);
2772 task_count = totals.task_count;
2773 if (!task_count)
2774 printf("<no still running tasks>\n");
2775
2776 printf("\nTerminated tasks:\n");
2777 machine__for_each_thread(m, show_deadthread_runtime, &totals);
2778 if (task_count == totals.task_count)
2779 printf("<no terminated tasks>\n");
2780
2781 /* CPU idle stats not tracked when samples were skipped */
Namhyung Kim07235f82016-12-08 23:47:54 +09002782 if (sched->skipped_samples && !sched->idle_hist)
David Ahern52df1382016-11-16 15:06:30 +09002783 return;
2784
2785 printf("\nIdle stats:\n");
Namhyung Kimb3363522016-12-06 12:40:05 +09002786 for (i = 0; i < idle_max_cpu; ++i) {
David Ahern52df1382016-11-16 15:06:30 +09002787 t = idle_threads[i];
2788 if (!t)
2789 continue;
2790
2791 r = thread__priv(t);
2792 if (r && r->run_stats.n) {
2793 totals.sched_count += r->run_stats.n;
2794 printf(" CPU %2d idle for ", i);
2795 print_sched_time(r->total_run_time, 6);
Namhyung Kim9396c9c2016-12-22 15:03:50 +09002796 printf(" msec (%6.2f%%)\n", 100.0 * r->total_run_time / hist_time);
David Ahern52df1382016-11-16 15:06:30 +09002797 } else
2798 printf(" CPU %2d idle entire time window\n", i);
2799 }
2800
Namhyung Kimba957eb2016-12-08 23:47:55 +09002801 if (sched->idle_hist && symbol_conf.use_callchain) {
2802 callchain_param.mode = CHAIN_FOLDED;
2803 callchain_param.value = CCVAL_PERIOD;
2804
2805 callchain_register_param(&callchain_param);
2806
2807 printf("\nIdle stats by callchain:\n");
2808 for (i = 0; i < idle_max_cpu; ++i) {
2809 struct idle_thread_runtime *itr;
2810
2811 t = idle_threads[i];
2812 if (!t)
2813 continue;
2814
2815 itr = thread__priv(t);
2816 if (itr == NULL)
2817 continue;
2818
2819 callchain_param.sort(&itr->sorted_root, &itr->callchain,
2820 0, &callchain_param);
2821
2822 printf(" CPU %2d:", i);
2823 print_sched_time(itr->tr.total_run_time, 6);
2824 printf(" msec\n");
2825 timehist_print_idlehist_callchain(&itr->sorted_root);
2826 printf("\n");
2827 }
2828 }
2829
David Ahern52df1382016-11-16 15:06:30 +09002830 printf("\n"
2831 " Total number of unique tasks: %" PRIu64 "\n"
Namhyung Kim9396c9c2016-12-22 15:03:50 +09002832 "Total number of context switches: %" PRIu64 "\n",
David Ahern52df1382016-11-16 15:06:30 +09002833 totals.task_count, totals.sched_count);
2834
Namhyung Kim9396c9c2016-12-22 15:03:50 +09002835 printf(" Total run time (msec): ");
David Ahern52df1382016-11-16 15:06:30 +09002836 print_sched_time(totals.total_run_time, 2);
2837 printf("\n");
Namhyung Kim9396c9c2016-12-22 15:03:50 +09002838
2839 printf(" Total scheduling time (msec): ");
2840 print_sched_time(hist_time, 2);
2841 printf(" (x %d)\n", sched->max_cpu);
David Ahern52df1382016-11-16 15:06:30 +09002842}
2843
David Ahern49394a22016-11-16 15:06:29 +09002844typedef int (*sched_handler)(struct perf_tool *tool,
2845 union perf_event *event,
2846 struct perf_evsel *evsel,
2847 struct perf_sample *sample,
2848 struct machine *machine);
2849
2850static int perf_timehist__process_sample(struct perf_tool *tool,
2851 union perf_event *event,
2852 struct perf_sample *sample,
2853 struct perf_evsel *evsel,
2854 struct machine *machine)
2855{
2856 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
2857 int err = 0;
2858 int this_cpu = sample->cpu;
2859
2860 if (this_cpu > sched->max_cpu)
2861 sched->max_cpu = this_cpu;
2862
2863 if (evsel->handler != NULL) {
2864 sched_handler f = evsel->handler;
2865
2866 err = f(tool, event, evsel, sample, machine);
2867 }
2868
2869 return err;
2870}
2871
David Ahern6c973c92016-11-16 15:06:32 +09002872static int timehist_check_attr(struct perf_sched *sched,
2873 struct perf_evlist *evlist)
2874{
2875 struct perf_evsel *evsel;
2876 struct evsel_runtime *er;
2877
2878 list_for_each_entry(evsel, &evlist->entries, node) {
2879 er = perf_evsel__get_runtime(evsel);
2880 if (er == NULL) {
2881 pr_err("Failed to allocate memory for evsel runtime data\n");
2882 return -1;
2883 }
2884
2885 if (sched->show_callchain &&
2886 !(evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN)) {
2887 pr_info("Samples do not have callchains.\n");
2888 sched->show_callchain = 0;
2889 symbol_conf.use_callchain = 0;
2890 }
2891 }
2892
2893 return 0;
2894}
2895
David Ahern49394a22016-11-16 15:06:29 +09002896static int perf_sched__timehist(struct perf_sched *sched)
2897{
2898 const struct perf_evsel_str_handler handlers[] = {
2899 { "sched:sched_switch", timehist_sched_switch_event, },
2900 { "sched:sched_wakeup", timehist_sched_wakeup_event, },
2901 { "sched:sched_wakeup_new", timehist_sched_wakeup_event, },
2902 };
David Ahern350f54f2016-11-25 09:28:41 -07002903 const struct perf_evsel_str_handler migrate_handlers[] = {
2904 { "sched:sched_migrate_task", timehist_migrate_task_event, },
2905 };
David Ahern49394a22016-11-16 15:06:29 +09002906 struct perf_data_file file = {
2907 .path = input_name,
2908 .mode = PERF_DATA_MODE_READ,
Namhyung Kim6fa94252016-12-06 12:40:01 +09002909 .force = sched->force,
David Ahern49394a22016-11-16 15:06:29 +09002910 };
2911
2912 struct perf_session *session;
David Ahern52df1382016-11-16 15:06:30 +09002913 struct perf_evlist *evlist;
David Ahern49394a22016-11-16 15:06:29 +09002914 int err = -1;
2915
2916 /*
2917 * event handlers for timehist option
2918 */
2919 sched->tool.sample = perf_timehist__process_sample;
2920 sched->tool.mmap = perf_event__process_mmap;
2921 sched->tool.comm = perf_event__process_comm;
2922 sched->tool.exit = perf_event__process_exit;
2923 sched->tool.fork = perf_event__process_fork;
2924 sched->tool.lost = process_lost;
2925 sched->tool.attr = perf_event__process_attr;
2926 sched->tool.tracing_data = perf_event__process_tracing_data;
2927 sched->tool.build_id = perf_event__process_build_id;
2928
2929 sched->tool.ordered_events = true;
2930 sched->tool.ordering_requires_timestamps = true;
2931
David Ahern6c973c92016-11-16 15:06:32 +09002932 symbol_conf.use_callchain = sched->show_callchain;
2933
David Ahern49394a22016-11-16 15:06:29 +09002934 session = perf_session__new(&file, false, &sched->tool);
2935 if (session == NULL)
2936 return -ENOMEM;
2937
David Ahern52df1382016-11-16 15:06:30 +09002938 evlist = session->evlist;
2939
David Ahern49394a22016-11-16 15:06:29 +09002940 symbol__init(&session->header.env);
2941
David Ahern853b7402016-11-29 10:15:44 -07002942 if (perf_time__parse_str(&sched->ptime, sched->time_str) != 0) {
2943 pr_err("Invalid time string\n");
2944 return -EINVAL;
2945 }
2946
David Ahern6c973c92016-11-16 15:06:32 +09002947 if (timehist_check_attr(sched, evlist) != 0)
2948 goto out;
2949
David Ahern49394a22016-11-16 15:06:29 +09002950 setup_pager();
2951
2952 /* setup per-evsel handlers */
2953 if (perf_session__set_tracepoints_handlers(session, handlers))
2954 goto out;
2955
David Ahernf45bf8d2016-11-29 13:39:48 -07002956 /* sched_switch event at a minimum needs to exist */
2957 if (!perf_evlist__find_tracepoint_by_name(session->evlist,
2958 "sched:sched_switch")) {
2959 pr_err("No sched_switch events found. Have you run 'perf sched record'?\n");
David Ahern49394a22016-11-16 15:06:29 +09002960 goto out;
David Ahernf45bf8d2016-11-29 13:39:48 -07002961 }
David Ahern49394a22016-11-16 15:06:29 +09002962
David Ahern350f54f2016-11-25 09:28:41 -07002963 if (sched->show_migrations &&
2964 perf_session__set_tracepoints_handlers(session, migrate_handlers))
2965 goto out;
2966
David Ahern49394a22016-11-16 15:06:29 +09002967 /* pre-allocate struct for per-CPU idle stats */
2968 sched->max_cpu = session->header.env.nr_cpus_online;
2969 if (sched->max_cpu == 0)
2970 sched->max_cpu = 4;
2971 if (init_idle_threads(sched->max_cpu))
2972 goto out;
2973
David Ahern52df1382016-11-16 15:06:30 +09002974 /* summary_only implies summary option, but don't overwrite summary if set */
2975 if (sched->summary_only)
2976 sched->summary = sched->summary_only;
2977
2978 if (!sched->summary_only)
David Aherna407b062016-11-16 15:06:33 +09002979 timehist_header(sched);
David Ahern49394a22016-11-16 15:06:29 +09002980
2981 err = perf_session__process_events(session);
2982 if (err) {
2983 pr_err("Failed to process events, error %d", err);
2984 goto out;
2985 }
2986
David Ahern52df1382016-11-16 15:06:30 +09002987 sched->nr_events = evlist->stats.nr_events[0];
2988 sched->nr_lost_events = evlist->stats.total_lost;
2989 sched->nr_lost_chunks = evlist->stats.nr_events[PERF_RECORD_LOST];
2990
2991 if (sched->summary)
2992 timehist_print_summary(sched, session);
2993
David Ahern49394a22016-11-16 15:06:29 +09002994out:
2995 free_idle_threads();
2996 perf_session__delete(session);
2997
2998 return err;
2999}
3000
3001
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003002static void print_bad_events(struct perf_sched *sched)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003003{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003004 if (sched->nr_unordered_timestamps && sched->nr_timestamps) {
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003005 printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003006 (double)sched->nr_unordered_timestamps/(double)sched->nr_timestamps*100.0,
3007 sched->nr_unordered_timestamps, sched->nr_timestamps);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003008 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003009 if (sched->nr_lost_events && sched->nr_events) {
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003010 printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003011 (double)sched->nr_lost_events/(double)sched->nr_events * 100.0,
3012 sched->nr_lost_events, sched->nr_events, sched->nr_lost_chunks);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003013 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003014 if (sched->nr_context_switch_bugs && sched->nr_timestamps) {
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003015 printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003016 (double)sched->nr_context_switch_bugs/(double)sched->nr_timestamps*100.0,
3017 sched->nr_context_switch_bugs, sched->nr_timestamps);
3018 if (sched->nr_lost_events)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003019 printf(" (due to lost events?)");
3020 printf("\n");
3021 }
3022}
3023
Josef Bacik2f80dd42015-05-22 09:18:40 -04003024static void __merge_work_atoms(struct rb_root *root, struct work_atoms *data)
3025{
3026 struct rb_node **new = &(root->rb_node), *parent = NULL;
3027 struct work_atoms *this;
3028 const char *comm = thread__comm_str(data->thread), *this_comm;
3029
3030 while (*new) {
3031 int cmp;
3032
3033 this = container_of(*new, struct work_atoms, node);
3034 parent = *new;
3035
3036 this_comm = thread__comm_str(this->thread);
3037 cmp = strcmp(comm, this_comm);
3038 if (cmp > 0) {
3039 new = &((*new)->rb_left);
3040 } else if (cmp < 0) {
3041 new = &((*new)->rb_right);
3042 } else {
3043 this->num_merged++;
3044 this->total_runtime += data->total_runtime;
3045 this->nb_atoms += data->nb_atoms;
3046 this->total_lat += data->total_lat;
3047 list_splice(&data->work_list, &this->work_list);
3048 if (this->max_lat < data->max_lat) {
3049 this->max_lat = data->max_lat;
3050 this->max_lat_at = data->max_lat_at;
3051 }
3052 zfree(&data);
3053 return;
3054 }
3055 }
3056
3057 data->num_merged++;
3058 rb_link_node(&data->node, parent, new);
3059 rb_insert_color(&data->node, root);
3060}
3061
3062static void perf_sched__merge_lat(struct perf_sched *sched)
3063{
3064 struct work_atoms *data;
3065 struct rb_node *node;
3066
3067 if (sched->skip_merge)
3068 return;
3069
3070 while ((node = rb_first(&sched->atom_root))) {
3071 rb_erase(node, &sched->atom_root);
3072 data = rb_entry(node, struct work_atoms, node);
3073 __merge_work_atoms(&sched->merged_atom_root, data);
3074 }
3075}
3076
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003077static int perf_sched__lat(struct perf_sched *sched)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003078{
3079 struct rb_node *next;
3080
3081 setup_pager();
David Ahernad9def72013-08-07 22:50:44 -04003082
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03003083 if (perf_sched__read_events(sched))
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03003084 return -1;
David Ahernad9def72013-08-07 22:50:44 -04003085
Josef Bacik2f80dd42015-05-22 09:18:40 -04003086 perf_sched__merge_lat(sched);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003087 perf_sched__sort_lat(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003088
Ramkumar Ramachandra80790e02014-03-17 10:18:21 -04003089 printf("\n -----------------------------------------------------------------------------------------------------------------\n");
3090 printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n");
3091 printf(" -----------------------------------------------------------------------------------------------------------------\n");
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003092
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003093 next = rb_first(&sched->sorted_atom_root);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003094
3095 while (next) {
3096 struct work_atoms *work_list;
3097
3098 work_list = rb_entry(next, struct work_atoms, node);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003099 output_lat_thread(sched, work_list);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003100 next = rb_next(next);
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03003101 thread__zput(work_list->thread);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003102 }
3103
Ramkumar Ramachandra80790e02014-03-17 10:18:21 -04003104 printf(" -----------------------------------------------------------------------------------------------------------------\n");
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -02003105 printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n",
Arnaldo Carvalho de Melo4fc76e42016-08-08 12:23:49 -03003106 (double)sched->all_runtime / NSEC_PER_MSEC, sched->all_count);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003107
3108 printf(" ---------------------------------------------------\n");
3109
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003110 print_bad_events(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003111 printf("\n");
3112
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03003113 return 0;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003114}
3115
Jiri Olsa99623c62016-04-12 15:29:26 +02003116static int setup_map_cpus(struct perf_sched *sched)
3117{
Jiri Olsa73643bb2016-04-12 15:29:31 +02003118 struct cpu_map *map;
3119
Jiri Olsa99623c62016-04-12 15:29:26 +02003120 sched->max_cpu = sysconf(_SC_NPROCESSORS_CONF);
3121
3122 if (sched->map.comp) {
3123 sched->map.comp_cpus = zalloc(sched->max_cpu * sizeof(int));
Jiri Olsacf294f22016-04-12 15:29:30 +02003124 if (!sched->map.comp_cpus)
3125 return -1;
Jiri Olsa99623c62016-04-12 15:29:26 +02003126 }
3127
Jiri Olsa73643bb2016-04-12 15:29:31 +02003128 if (!sched->map.cpus_str)
3129 return 0;
3130
3131 map = cpu_map__new(sched->map.cpus_str);
3132 if (!map) {
3133 pr_err("failed to get cpus map from %s\n", sched->map.cpus_str);
3134 return -1;
3135 }
3136
3137 sched->map.cpus = map;
Jiri Olsa99623c62016-04-12 15:29:26 +02003138 return 0;
3139}
3140
Jiri Olsaa151a372016-04-12 15:29:29 +02003141static int setup_color_pids(struct perf_sched *sched)
3142{
3143 struct thread_map *map;
3144
3145 if (!sched->map.color_pids_str)
3146 return 0;
3147
3148 map = thread_map__new_by_tid_str(sched->map.color_pids_str);
3149 if (!map) {
3150 pr_err("failed to get thread map from %s\n", sched->map.color_pids_str);
3151 return -1;
3152 }
3153
3154 sched->map.color_pids = map;
3155 return 0;
3156}
3157
Jiri Olsacf294f22016-04-12 15:29:30 +02003158static int setup_color_cpus(struct perf_sched *sched)
3159{
3160 struct cpu_map *map;
3161
3162 if (!sched->map.color_cpus_str)
3163 return 0;
3164
3165 map = cpu_map__new(sched->map.color_cpus_str);
3166 if (!map) {
3167 pr_err("failed to get thread map from %s\n", sched->map.color_cpus_str);
3168 return -1;
3169 }
3170
3171 sched->map.color_cpus = map;
3172 return 0;
3173}
3174
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003175static int perf_sched__map(struct perf_sched *sched)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003176{
Jiri Olsa99623c62016-04-12 15:29:26 +02003177 if (setup_map_cpus(sched))
3178 return -1;
Ingo Molnar40749d02009-09-17 18:24:55 +02003179
Jiri Olsaa151a372016-04-12 15:29:29 +02003180 if (setup_color_pids(sched))
3181 return -1;
3182
Jiri Olsacf294f22016-04-12 15:29:30 +02003183 if (setup_color_cpus(sched))
3184 return -1;
3185
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003186 setup_pager();
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03003187 if (perf_sched__read_events(sched))
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03003188 return -1;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003189 print_bad_events(sched);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03003190 return 0;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003191}
3192
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003193static int perf_sched__replay(struct perf_sched *sched)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003194{
3195 unsigned long i;
3196
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003197 calibrate_run_measurement_overhead(sched);
3198 calibrate_sleep_measurement_overhead(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003199
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003200 test_calibrations(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003201
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03003202 if (perf_sched__read_events(sched))
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03003203 return -1;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003204
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003205 printf("nr_run_events: %ld\n", sched->nr_run_events);
3206 printf("nr_sleep_events: %ld\n", sched->nr_sleep_events);
3207 printf("nr_wakeup_events: %ld\n", sched->nr_wakeup_events);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003208
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003209 if (sched->targetless_wakeups)
3210 printf("target-less wakeups: %ld\n", sched->targetless_wakeups);
3211 if (sched->multitarget_wakeups)
3212 printf("multi-target wakeups: %ld\n", sched->multitarget_wakeups);
3213 if (sched->nr_run_events_optimized)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003214 printf("run atoms optimized: %ld\n",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003215 sched->nr_run_events_optimized);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003216
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003217 print_task_traces(sched);
3218 add_cross_task_wakeups(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003219
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003220 create_tasks(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003221 printf("------------------------------------------------------------\n");
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003222 for (i = 0; i < sched->replay_repeat; i++)
3223 run_one_test(sched);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03003224
3225 return 0;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003226}
3227
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003228static void setup_sorting(struct perf_sched *sched, const struct option *options,
3229 const char * const usage_msg[])
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02003230{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003231 char *tmp, *tok, *str = strdup(sched->sort_order);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02003232
3233 for (tok = strtok_r(str, ", ", &tmp);
3234 tok; tok = strtok_r(NULL, ", ", &tmp)) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003235 if (sort_dimension__add(tok, &sched->sort_list) < 0) {
Namhyung Kimc7118362015-10-25 00:49:27 +09003236 usage_with_options_msg(usage_msg, options,
3237 "Unknown --sort key: `%s'", tok);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02003238 }
3239 }
3240
3241 free(str);
3242
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003243 sort_dimension__add("pid", &sched->cmp_pid);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02003244}
3245
Ingo Molnar1fc35b22009-09-13 09:44:29 +02003246static int __cmd_record(int argc, const char **argv)
3247{
3248 unsigned int rec_argc, i, j;
3249 const char **rec_argv;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003250 const char * const record_args[] = {
3251 "record",
3252 "-a",
3253 "-R",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003254 "-m", "1024",
3255 "-c", "1",
3256 "-e", "sched:sched_switch",
3257 "-e", "sched:sched_stat_wait",
3258 "-e", "sched:sched_stat_sleep",
3259 "-e", "sched:sched_stat_iowait",
3260 "-e", "sched:sched_stat_runtime",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003261 "-e", "sched:sched_process_fork",
3262 "-e", "sched:sched_wakeup",
Dongsheng7fff9592014-05-05 16:05:53 +09003263 "-e", "sched:sched_wakeup_new",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003264 "-e", "sched:sched_migrate_task",
3265 };
Ingo Molnar1fc35b22009-09-13 09:44:29 +02003266
3267 rec_argc = ARRAY_SIZE(record_args) + argc - 1;
3268 rec_argv = calloc(rec_argc + 1, sizeof(char *));
3269
Arnaldo Carvalho de Meloe462dc52011-01-10 10:48:47 -02003270 if (rec_argv == NULL)
Chris Samuelce47dc52010-11-13 13:35:06 +11003271 return -ENOMEM;
3272
Ingo Molnar1fc35b22009-09-13 09:44:29 +02003273 for (i = 0; i < ARRAY_SIZE(record_args); i++)
3274 rec_argv[i] = strdup(record_args[i]);
3275
3276 for (j = 1; j < (unsigned int)argc; j++, i++)
3277 rec_argv[i] = argv[j];
3278
3279 BUG_ON(i != rec_argc);
3280
Arnaldo Carvalho de Melob0ad8ea2017-03-27 11:47:20 -03003281 return cmd_record(i, rec_argv);
Ingo Molnar1fc35b22009-09-13 09:44:29 +02003282}
3283
Arnaldo Carvalho de Melob0ad8ea2017-03-27 11:47:20 -03003284int cmd_sched(int argc, const char **argv)
Ingo Molnar0a02ad92009-09-11 12:12:54 +02003285{
Adrian Hunter8a39df82013-10-22 10:34:15 +03003286 const char default_sort_order[] = "avg, max, switch, runtime";
3287 struct perf_sched sched = {
3288 .tool = {
3289 .sample = perf_sched__process_tracepoint_sample,
3290 .comm = perf_event__process_comm,
Hari Bathinif3b36142017-03-08 02:11:43 +05303291 .namespaces = perf_event__process_namespaces,
Adrian Hunter8a39df82013-10-22 10:34:15 +03003292 .lost = perf_event__process_lost,
3293 .fork = perf_sched__process_fork_event,
Jiri Olsa0a8cb852014-07-06 14:18:21 +02003294 .ordered_events = true,
Adrian Hunter8a39df82013-10-22 10:34:15 +03003295 },
3296 .cmp_pid = LIST_HEAD_INIT(sched.cmp_pid),
3297 .sort_list = LIST_HEAD_INIT(sched.sort_list),
3298 .start_work_mutex = PTHREAD_MUTEX_INITIALIZER,
3299 .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER,
Adrian Hunter8a39df82013-10-22 10:34:15 +03003300 .sort_order = default_sort_order,
3301 .replay_repeat = 10,
3302 .profile_cpu = -1,
3303 .next_shortname1 = 'A',
3304 .next_shortname2 = '0',
Josef Bacik2f80dd42015-05-22 09:18:40 -04003305 .skip_merge = 0,
David Ahern6c973c92016-11-16 15:06:32 +09003306 .show_callchain = 1,
3307 .max_stack = 5,
Adrian Hunter8a39df82013-10-22 10:34:15 +03003308 };
Namhyung Kim77f02f42016-10-24 12:00:03 +09003309 const struct option sched_options[] = {
3310 OPT_STRING('i', "input", &input_name, "file",
3311 "input file name"),
3312 OPT_INCR('v', "verbose", &verbose,
3313 "be more verbose (show symbol address, etc)"),
3314 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
3315 "dump raw trace in ASCII"),
Namhyung Kim6fa94252016-12-06 12:40:01 +09003316 OPT_BOOLEAN('f', "force", &sched.force, "don't complain, do it"),
Namhyung Kim77f02f42016-10-24 12:00:03 +09003317 OPT_END()
3318 };
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003319 const struct option latency_options[] = {
3320 OPT_STRING('s', "sort", &sched.sort_order, "key[,key2...]",
3321 "sort by key(s): runtime, switch, avg, max"),
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003322 OPT_INTEGER('C', "CPU", &sched.profile_cpu,
3323 "CPU to profile on"),
Josef Bacik2f80dd42015-05-22 09:18:40 -04003324 OPT_BOOLEAN('p', "pids", &sched.skip_merge,
3325 "latency stats per pid instead of per comm"),
Namhyung Kim77f02f42016-10-24 12:00:03 +09003326 OPT_PARENT(sched_options)
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003327 };
3328 const struct option replay_options[] = {
3329 OPT_UINTEGER('r', "repeat", &sched.replay_repeat,
3330 "repeat the workload replay N times (-1: infinite)"),
Namhyung Kim77f02f42016-10-24 12:00:03 +09003331 OPT_PARENT(sched_options)
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003332 };
Jiri Olsa99623c62016-04-12 15:29:26 +02003333 const struct option map_options[] = {
3334 OPT_BOOLEAN(0, "compact", &sched.map.comp,
3335 "map output in compact mode"),
Jiri Olsaa151a372016-04-12 15:29:29 +02003336 OPT_STRING(0, "color-pids", &sched.map.color_pids_str, "pids",
3337 "highlight given pids in map"),
Jiri Olsacf294f22016-04-12 15:29:30 +02003338 OPT_STRING(0, "color-cpus", &sched.map.color_cpus_str, "cpus",
3339 "highlight given CPUs in map"),
Jiri Olsa73643bb2016-04-12 15:29:31 +02003340 OPT_STRING(0, "cpus", &sched.map.cpus_str, "cpus",
3341 "display given CPUs in map"),
Namhyung Kim77f02f42016-10-24 12:00:03 +09003342 OPT_PARENT(sched_options)
Jiri Olsa99623c62016-04-12 15:29:26 +02003343 };
David Ahern49394a22016-11-16 15:06:29 +09003344 const struct option timehist_options[] = {
3345 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
3346 "file", "vmlinux pathname"),
3347 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
3348 "file", "kallsyms pathname"),
David Ahern6c973c92016-11-16 15:06:32 +09003349 OPT_BOOLEAN('g', "call-graph", &sched.show_callchain,
3350 "Display call chains if present (default on)"),
3351 OPT_UINTEGER(0, "max-stack", &sched.max_stack,
3352 "Maximum number of functions to display backtrace."),
David Ahern49394a22016-11-16 15:06:29 +09003353 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
3354 "Look for files with symbols relative to this directory"),
David Ahern52df1382016-11-16 15:06:30 +09003355 OPT_BOOLEAN('s', "summary", &sched.summary_only,
3356 "Show only syscall summary with statistics"),
3357 OPT_BOOLEAN('S', "with-summary", &sched.summary,
3358 "Show all syscalls and summary with statistics"),
David Ahernfc1469f2016-11-16 15:06:31 +09003359 OPT_BOOLEAN('w', "wakeups", &sched.show_wakeups, "Show wakeup events"),
Brendan Gregg292c4a82017-03-14 01:56:29 +00003360 OPT_BOOLEAN('n', "next", &sched.show_next, "Show next task"),
David Ahern350f54f2016-11-25 09:28:41 -07003361 OPT_BOOLEAN('M', "migrations", &sched.show_migrations, "Show migration events"),
David Aherna407b062016-11-16 15:06:33 +09003362 OPT_BOOLEAN('V', "cpu-visual", &sched.show_cpu_visual, "Add CPU visual"),
Namhyung Kim07235f82016-12-08 23:47:54 +09003363 OPT_BOOLEAN('I', "idle-hist", &sched.idle_hist, "Show idle events only"),
David Ahern853b7402016-11-29 10:15:44 -07003364 OPT_STRING(0, "time", &sched.time_str, "str",
3365 "Time span for analysis (start,stop)"),
Namhyung Kim414e0502017-01-13 19:45:22 +09003366 OPT_BOOLEAN(0, "state", &sched.show_state, "Show task state when sched-out"),
David Ahern49394a22016-11-16 15:06:29 +09003367 OPT_PARENT(sched_options)
3368 };
3369
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003370 const char * const latency_usage[] = {
3371 "perf sched latency [<options>]",
3372 NULL
3373 };
3374 const char * const replay_usage[] = {
3375 "perf sched replay [<options>]",
3376 NULL
3377 };
Jiri Olsa99623c62016-04-12 15:29:26 +02003378 const char * const map_usage[] = {
3379 "perf sched map [<options>]",
3380 NULL
3381 };
David Ahern49394a22016-11-16 15:06:29 +09003382 const char * const timehist_usage[] = {
3383 "perf sched timehist [<options>]",
3384 NULL
3385 };
Ramkumar Ramachandraa83edb22014-03-14 23:17:54 -04003386 const char *const sched_subcommands[] = { "record", "latency", "map",
David Ahern49394a22016-11-16 15:06:29 +09003387 "replay", "script",
3388 "timehist", NULL };
Ramkumar Ramachandraa83edb22014-03-14 23:17:54 -04003389 const char *sched_usage[] = {
3390 NULL,
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003391 NULL
3392 };
3393 struct trace_sched_handler lat_ops = {
3394 .wakeup_event = latency_wakeup_event,
3395 .switch_event = latency_switch_event,
3396 .runtime_event = latency_runtime_event,
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003397 .migrate_task_event = latency_migrate_task_event,
3398 };
3399 struct trace_sched_handler map_ops = {
3400 .switch_event = map_switch_event,
3401 };
3402 struct trace_sched_handler replay_ops = {
3403 .wakeup_event = replay_wakeup_event,
3404 .switch_event = replay_switch_event,
3405 .fork_event = replay_fork_event,
3406 };
Adrian Hunter156a2b02013-10-22 10:34:16 +03003407 unsigned int i;
3408
3409 for (i = 0; i < ARRAY_SIZE(sched.curr_pid); i++)
3410 sched.curr_pid[i] = -1;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003411
Ramkumar Ramachandraa83edb22014-03-14 23:17:54 -04003412 argc = parse_options_subcommand(argc, argv, sched_options, sched_subcommands,
3413 sched_usage, PARSE_OPT_STOP_AT_NON_OPTION);
Ingo Molnarf2858d82009-09-11 12:12:54 +02003414 if (!argc)
3415 usage_with_options(sched_usage, sched_options);
3416
Xiao Guangrongc0777c52009-12-07 12:04:49 +08003417 /*
Ingo Molnar133dc4c2010-11-16 18:45:39 +01003418 * Aliased to 'perf script' for now:
Xiao Guangrongc0777c52009-12-07 12:04:49 +08003419 */
Ingo Molnar133dc4c2010-11-16 18:45:39 +01003420 if (!strcmp(argv[0], "script"))
Arnaldo Carvalho de Melob0ad8ea2017-03-27 11:47:20 -03003421 return cmd_script(argc, argv);
Xiao Guangrongc0777c52009-12-07 12:04:49 +08003422
Ingo Molnar1fc35b22009-09-13 09:44:29 +02003423 if (!strncmp(argv[0], "rec", 3)) {
3424 return __cmd_record(argc, argv);
3425 } else if (!strncmp(argv[0], "lat", 3)) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003426 sched.tp_handler = &lat_ops;
Ingo Molnarf2858d82009-09-11 12:12:54 +02003427 if (argc > 1) {
3428 argc = parse_options(argc, argv, latency_options, latency_usage, 0);
3429 if (argc)
3430 usage_with_options(latency_usage, latency_options);
Ingo Molnarf2858d82009-09-11 12:12:54 +02003431 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003432 setup_sorting(&sched, latency_options, latency_usage);
3433 return perf_sched__lat(&sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02003434 } else if (!strcmp(argv[0], "map")) {
Jiri Olsa99623c62016-04-12 15:29:26 +02003435 if (argc) {
Jiri Olsaa151a372016-04-12 15:29:29 +02003436 argc = parse_options(argc, argv, map_options, map_usage, 0);
Jiri Olsa99623c62016-04-12 15:29:26 +02003437 if (argc)
3438 usage_with_options(map_usage, map_options);
3439 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003440 sched.tp_handler = &map_ops;
3441 setup_sorting(&sched, latency_options, latency_usage);
3442 return perf_sched__map(&sched);
Ingo Molnarf2858d82009-09-11 12:12:54 +02003443 } else if (!strncmp(argv[0], "rep", 3)) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003444 sched.tp_handler = &replay_ops;
Ingo Molnarf2858d82009-09-11 12:12:54 +02003445 if (argc) {
3446 argc = parse_options(argc, argv, replay_options, replay_usage, 0);
3447 if (argc)
3448 usage_with_options(replay_usage, replay_options);
3449 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03003450 return perf_sched__replay(&sched);
David Ahern49394a22016-11-16 15:06:29 +09003451 } else if (!strcmp(argv[0], "timehist")) {
3452 if (argc) {
3453 argc = parse_options(argc, argv, timehist_options,
3454 timehist_usage, 0);
3455 if (argc)
3456 usage_with_options(timehist_usage, timehist_options);
3457 }
Brendan Gregg292c4a82017-03-14 01:56:29 +00003458 if ((sched.show_wakeups || sched.show_next) &&
3459 sched.summary_only) {
3460 pr_err(" Error: -s and -[n|w] are mutually exclusive.\n");
David Ahernfc1469f2016-11-16 15:06:31 +09003461 parse_options_usage(timehist_usage, timehist_options, "s", true);
Brendan Gregg292c4a82017-03-14 01:56:29 +00003462 if (sched.show_wakeups)
3463 parse_options_usage(NULL, timehist_options, "w", true);
3464 if (sched.show_next)
3465 parse_options_usage(NULL, timehist_options, "n", true);
David Ahernfc1469f2016-11-16 15:06:31 +09003466 return -EINVAL;
3467 }
3468
David Ahern49394a22016-11-16 15:06:29 +09003469 return perf_sched__timehist(&sched);
Ingo Molnarf2858d82009-09-11 12:12:54 +02003470 } else {
3471 usage_with_options(sched_usage, sched_options);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02003472 }
3473
Ingo Molnarec156762009-09-11 12:12:54 +02003474 return 0;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02003475}