perf session: Use evlist/evsel for managing perf.data attributes
So that we can reuse things like the id to attr lookup routine
(perf_evlist__id2evsel) that uses a hash table instead of the linear
lookup done in the older perf_header_attr routines, etc.
Also to make evsels/evlist more pervasive an API, simplyfing using the
emerging perf lib.
cc: Arun Sharma <arun@sharma-home.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 190c64c..d852cef 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -19,7 +19,7 @@
#include <linux/hash.h>
#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
-#define SID(e, x, y) xyarray__entry(e->id, x, y)
+#define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
struct thread_map *threads)
@@ -106,8 +106,9 @@
evlist->nr_fds++;
}
-void perf_evlist__id_hash(struct perf_evlist *evlist, struct perf_evsel *evsel,
- int cpu, int thread, u64 id)
+static void perf_evlist__id_hash(struct perf_evlist *evlist,
+ struct perf_evsel *evsel,
+ int cpu, int thread, u64 id)
{
int hash;
struct perf_sample_id *sid = SID(evsel, cpu, thread);
@@ -118,9 +119,16 @@
hlist_add_head(&sid->node, &evlist->heads[hash]);
}
-static int perf_evlist__id_hash_fd(struct perf_evlist *evlist,
- struct perf_evsel *evsel,
- int cpu, int thread, int fd)
+void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
+ int cpu, int thread, u64 id)
+{
+ perf_evlist__id_hash(evlist, evsel, cpu, thread, id);
+ evsel->id[evsel->ids++] = id;
+}
+
+static int perf_evlist__id_add_fd(struct perf_evlist *evlist,
+ struct perf_evsel *evsel,
+ int cpu, int thread, int fd)
{
u64 read_data[4] = { 0, };
int id_idx = 1; /* The first entry is the counter value */
@@ -134,7 +142,7 @@
if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
++id_idx;
- perf_evlist__id_hash(evlist, evsel, cpu, thread, read_data[id_idx]);
+ perf_evlist__id_add(evlist, evsel, cpu, thread, read_data[id_idx]);
return 0;
}
@@ -292,7 +300,7 @@
list_for_each_entry(evsel, &evlist->entries, node) {
if ((evsel->attr.read_format & PERF_FORMAT_ID) &&
- evsel->id == NULL &&
+ evsel->sample_id == NULL &&
perf_evsel__alloc_id(evsel, cpus->nr, threads->nr) < 0)
return -ENOMEM;
@@ -308,7 +316,7 @@
goto out_unmap;
if ((evsel->attr.read_format & PERF_FORMAT_ID) &&
- perf_evlist__id_hash_fd(evlist, evsel, cpu, thread, fd) < 0)
+ perf_evlist__id_add_fd(evlist, evsel, cpu, thread, fd) < 0)
goto out_unmap;
}
}
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 078d512..8b1cb7a 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -38,8 +38,8 @@
void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
int perf_evlist__add_default(struct perf_evlist *evlist);
-void perf_evlist__id_hash(struct perf_evlist *evlist, struct perf_evsel *evsel,
- int cpu, int thread, u64 id);
+void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
+ int cpu, int thread, u64 id);
int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 8083d51..662596a 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -41,8 +41,18 @@
int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads)
{
- evsel->id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id));
- return evsel->id != NULL ? 0 : -ENOMEM;
+ evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id));
+ if (evsel->sample_id == NULL)
+ return -ENOMEM;
+
+ evsel->id = zalloc(ncpus * nthreads * sizeof(u64));
+ if (evsel->id == NULL) {
+ xyarray__delete(evsel->sample_id);
+ evsel->sample_id = NULL;
+ return -ENOMEM;
+ }
+
+ return 0;
}
int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus)
@@ -60,7 +70,9 @@
void perf_evsel__free_id(struct perf_evsel *evsel)
{
- xyarray__delete(evsel->id);
+ xyarray__delete(evsel->sample_id);
+ evsel->sample_id = NULL;
+ free(evsel->id);
evsel->id = NULL;
}
@@ -79,7 +91,8 @@
{
assert(list_empty(&evsel->node));
xyarray__delete(evsel->fd);
- xyarray__delete(evsel->id);
+ xyarray__delete(evsel->sample_id);
+ free(evsel->id);
}
void perf_evsel__delete(struct perf_evsel *evsel)
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 281b60e..6710ab5 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -49,12 +49,17 @@
struct perf_event_attr attr;
char *filter;
struct xyarray *fd;
- struct xyarray *id;
+ struct xyarray *sample_id;
+ u64 *id;
struct perf_counts *counts;
int idx;
+ int ids;
struct hists hists;
char *name;
- void *priv;
+ union {
+ void *priv;
+ off_t id_offset;
+ };
struct cgroup_sel *cgrp;
};
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 108b0db..40b10e4 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -9,6 +9,7 @@
#include <linux/kernel.h>
#include "evlist.h"
+#include "evsel.h"
#include "util.h"
#include "header.h"
#include "../perf.h"
@@ -19,89 +20,6 @@
static bool no_buildid_cache = false;
-/*
- * Create new perf.data header attribute:
- */
-struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr)
-{
- struct perf_header_attr *self = malloc(sizeof(*self));
-
- if (self != NULL) {
- self->attr = *attr;
- self->ids = 0;
- self->size = 1;
- self->id = malloc(sizeof(u64));
- if (self->id == NULL) {
- free(self);
- self = NULL;
- }
- }
-
- return self;
-}
-
-void perf_header_attr__delete(struct perf_header_attr *self)
-{
- free(self->id);
- free(self);
-}
-
-int perf_header_attr__add_id(struct perf_header_attr *self, u64 id)
-{
- int pos = self->ids;
-
- self->ids++;
- if (self->ids > self->size) {
- int nsize = self->size * 2;
- u64 *nid = realloc(self->id, nsize * sizeof(u64));
-
- if (nid == NULL)
- return -1;
-
- self->size = nsize;
- self->id = nid;
- }
- self->id[pos] = id;
- return 0;
-}
-
-int perf_header__init(struct perf_header *self)
-{
- self->size = 1;
- self->attr = malloc(sizeof(void *));
- return self->attr == NULL ? -ENOMEM : 0;
-}
-
-void perf_header__exit(struct perf_header *self)
-{
- int i;
- for (i = 0; i < self->attrs; ++i)
- perf_header_attr__delete(self->attr[i]);
- free(self->attr);
-}
-
-int perf_header__add_attr(struct perf_header *self,
- struct perf_header_attr *attr)
-{
- if (self->frozen)
- return -1;
-
- if (self->attrs == self->size) {
- int nsize = self->size * 2;
- struct perf_header_attr **nattr;
-
- nattr = realloc(self->attr, nsize * sizeof(void *));
- if (nattr == NULL)
- return -1;
-
- self->size = nsize;
- self->attr = nattr;
- }
-
- self->attr[self->attrs++] = attr;
- return 0;
-}
-
static int event_count;
static struct perf_trace_event_type *events;
@@ -515,33 +433,41 @@
return 0;
}
-int perf_header__write(struct perf_header *self, struct perf_evlist *evlist,
- int fd, bool at_exit)
+int perf_session__write_header(struct perf_session *session,
+ struct perf_evlist *evlist,
+ int fd, bool at_exit)
{
struct perf_file_header f_header;
struct perf_file_attr f_attr;
- struct perf_header_attr *attr;
- int i, err;
+ struct perf_header *self = &session->header;
+ struct perf_evsel *attr, *pair = NULL;
+ int err;
lseek(fd, sizeof(f_header), SEEK_SET);
- for (i = 0; i < self->attrs; i++) {
- attr = self->attr[i];
+ if (session->evlist != evlist)
+ pair = list_entry(session->evlist->entries.next, struct perf_evsel, node);
+ list_for_each_entry(attr, &evlist->entries, node) {
attr->id_offset = lseek(fd, 0, SEEK_CUR);
err = do_write(fd, attr->id, attr->ids * sizeof(u64));
if (err < 0) {
+out_err_write:
pr_debug("failed to write perf header\n");
return err;
}
+ if (session->evlist != evlist) {
+ err = do_write(fd, pair->id, pair->ids * sizeof(u64));
+ if (err < 0)
+ goto out_err_write;
+ attr->ids += pair->ids;
+ pair = list_entry(pair->node.next, struct perf_evsel, node);
+ }
}
-
self->attr_offset = lseek(fd, 0, SEEK_CUR);
- for (i = 0; i < self->attrs; i++) {
- attr = self->attr[i];
-
+ list_for_each_entry(attr, &evlist->entries, node) {
f_attr = (struct perf_file_attr){
.attr = attr->attr,
.ids = {
@@ -580,7 +506,7 @@
.attr_size = sizeof(f_attr),
.attrs = {
.offset = self->attr_offset,
- .size = self->attrs * sizeof(f_attr),
+ .size = evlist->nr_entries * sizeof(f_attr),
},
.data = {
.offset = self->data_offset,
@@ -861,7 +787,7 @@
return 0;
}
-int perf_header__read(struct perf_session *session, int fd)
+int perf_session__read_header(struct perf_session *session, int fd)
{
struct perf_header *self = &session->header;
struct perf_file_header f_header;
@@ -869,6 +795,10 @@
u64 f_id;
int nr_attrs, nr_ids, i, j;
+ session->evlist = perf_evlist__new(NULL, NULL);
+ if (session->evlist == NULL)
+ return -ENOMEM;
+
if (session->fd_pipe)
return perf_header__read_pipe(session, fd);
@@ -881,33 +811,39 @@
lseek(fd, f_header.attrs.offset, SEEK_SET);
for (i = 0; i < nr_attrs; i++) {
- struct perf_header_attr *attr;
+ struct perf_evsel *evsel;
off_t tmp;
if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr)))
goto out_errno;
tmp = lseek(fd, 0, SEEK_CUR);
+ evsel = perf_evsel__new(&f_attr.attr, i);
- attr = perf_header_attr__new(&f_attr.attr);
- if (attr == NULL)
- return -ENOMEM;
+ if (evsel == NULL)
+ goto out_delete_evlist;
+ /*
+ * Do it before so that if perf_evsel__alloc_id fails, this
+ * entry gets purged too at perf_evlist__delete().
+ */
+ perf_evlist__add(session->evlist, evsel);
nr_ids = f_attr.ids.size / sizeof(u64);
+ /*
+ * We don't have the cpu and thread maps on the header, so
+ * for allocating the perf_sample_id table we fake 1 cpu and
+ * hattr->ids threads.
+ */
+ if (perf_evsel__alloc_id(evsel, 1, nr_ids))
+ goto out_delete_evlist;
+
lseek(fd, f_attr.ids.offset, SEEK_SET);
for (j = 0; j < nr_ids; j++) {
if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id)))
goto out_errno;
- if (perf_header_attr__add_id(attr, f_id) < 0) {
- perf_header_attr__delete(attr);
- return -ENOMEM;
- }
- }
- if (perf_header__add_attr(self, attr) < 0) {
- perf_header_attr__delete(attr);
- return -ENOMEM;
+ perf_evlist__id_add(session->evlist, evsel, 0, j, f_id);
}
lseek(fd, tmp, SEEK_SET);
@@ -932,37 +868,38 @@
return 0;
out_errno:
return -errno;
+
+out_delete_evlist:
+ perf_evlist__delete(session->evlist);
+ session->evlist = NULL;
+ return -ENOMEM;
}
-u64 perf_header__sample_type(struct perf_header *header)
+u64 perf_evlist__sample_type(struct perf_evlist *evlist)
{
+ struct perf_evsel *pos;
u64 type = 0;
- int i;
- for (i = 0; i < header->attrs; i++) {
- struct perf_header_attr *attr = header->attr[i];
-
+ list_for_each_entry(pos, &evlist->entries, node) {
if (!type)
- type = attr->attr.sample_type;
- else if (type != attr->attr.sample_type)
+ type = pos->attr.sample_type;
+ else if (type != pos->attr.sample_type)
die("non matching sample_type");
}
return type;
}
-bool perf_header__sample_id_all(const struct perf_header *header)
+bool perf_evlist__sample_id_all(const struct perf_evlist *evlist)
{
bool value = false, first = true;
- int i;
+ struct perf_evsel *pos;
- for (i = 0; i < header->attrs; i++) {
- struct perf_header_attr *attr = header->attr[i];
-
+ list_for_each_entry(pos, &evlist->entries, node) {
if (first) {
- value = attr->attr.sample_id_all;
+ value = pos->attr.sample_id_all;
first = false;
- } else if (value != attr->attr.sample_id_all)
+ } else if (value != pos->attr.sample_id_all)
die("non matching sample_id_all");
}
@@ -1000,16 +937,13 @@
return err;
}
-int perf_event__synthesize_attrs(struct perf_header *self,
- perf_event__handler_t process,
- struct perf_session *session)
+int perf_session__synthesize_attrs(struct perf_session *session,
+ perf_event__handler_t process)
{
- struct perf_header_attr *attr;
- int i, err = 0;
+ struct perf_evsel *attr;
+ int err = 0;
- for (i = 0; i < self->attrs; i++) {
- attr = self->attr[i];
-
+ list_for_each_entry(attr, &session->evlist->entries, node) {
err = perf_event__synthesize_attr(&attr->attr, attr->ids,
attr->id, process, session);
if (err) {
@@ -1024,27 +958,36 @@
int perf_event__process_attr(union perf_event *event,
struct perf_session *session)
{
- struct perf_header_attr *attr;
unsigned int i, ids, n_ids;
+ struct perf_evsel *evsel;
- attr = perf_header_attr__new(&event->attr.attr);
- if (attr == NULL)
+ if (session->evlist == NULL) {
+ session->evlist = perf_evlist__new(NULL, NULL);
+ if (session->evlist == NULL)
+ return -ENOMEM;
+ }
+
+ evsel = perf_evsel__new(&event->attr.attr,
+ session->evlist->nr_entries);
+ if (evsel == NULL)
return -ENOMEM;
+ perf_evlist__add(session->evlist, evsel);
+
ids = event->header.size;
ids -= (void *)&event->attr.id - (void *)event;
n_ids = ids / sizeof(u64);
+ /*
+ * We don't have the cpu and thread maps on the header, so
+ * for allocating the perf_sample_id table we fake 1 cpu and
+ * hattr->ids threads.
+ */
+ if (perf_evsel__alloc_id(evsel, 1, n_ids))
+ return -ENOMEM;
for (i = 0; i < n_ids; i++) {
- if (perf_header_attr__add_id(attr, event->attr.id[i]) < 0) {
- perf_header_attr__delete(attr);
- return -ENOMEM;
- }
- }
-
- if (perf_header__add_attr(&session->header, attr) < 0) {
- perf_header_attr__delete(attr);
- return -ENOMEM;
+ perf_evlist__id_add(session->evlist, evsel, 0, i,
+ event->attr.id[i]);
}
perf_session__update_sample_type(session);
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 2fab133..4cc2675 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -9,13 +9,6 @@
#include <linux/bitmap.h>
-struct perf_header_attr {
- struct perf_event_attr attr;
- int ids, size;
- u64 *id;
- off_t id_offset;
-};
-
enum {
HEADER_TRACE_INFO = 1,
HEADER_BUILD_ID,
@@ -51,9 +44,7 @@
struct perf_header {
int frozen;
- int attrs, size;
bool needs_swap;
- struct perf_header_attr **attr;
s64 attr_offset;
u64 data_offset;
u64 data_size;
@@ -62,29 +53,19 @@
DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
};
-int perf_header__init(struct perf_header *self);
-void perf_header__exit(struct perf_header *self);
-
struct perf_evlist;
-int perf_header__read(struct perf_session *session, int fd);
-int perf_header__write(struct perf_header *self, struct perf_evlist *evlist,
- int fd, bool at_exit);
+int perf_session__read_header(struct perf_session *session, int fd);
+int perf_session__write_header(struct perf_session *session,
+ struct perf_evlist *evlist,
+ int fd, bool at_exit);
int perf_header__write_pipe(int fd);
-int perf_header__add_attr(struct perf_header *self,
- struct perf_header_attr *attr);
-
int perf_header__push_event(u64 id, const char *name);
char *perf_header__find_event(u64 id);
-struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr);
-void perf_header_attr__delete(struct perf_header_attr *self);
-
-int perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
-
-u64 perf_header__sample_type(struct perf_header *header);
-bool perf_header__sample_id_all(const struct perf_header *header);
+u64 perf_evlist__sample_type(struct perf_evlist *evlist);
+bool perf_evlist__sample_id_all(const struct perf_evlist *evlist);
void perf_header__set_feat(struct perf_header *self, int feat);
void perf_header__clear_feat(struct perf_header *self, int feat);
bool perf_header__has_feat(const struct perf_header *self, int feat);
@@ -101,9 +82,8 @@
int perf_event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id,
perf_event__handler_t process,
struct perf_session *session);
-int perf_event__synthesize_attrs(struct perf_header *self,
- perf_event__handler_t process,
- struct perf_session *session);
+int perf_session__synthesize_attrs(struct perf_session *session,
+ perf_event__handler_t process);
int perf_event__process_attr(union perf_event *event, struct perf_session *session);
int perf_event__synthesize_event_type(u64 event_id, char *name,
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 0d41419..f26639f 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -13,46 +13,6 @@
#include "sort.h"
#include "util.h"
-static int perf_session__read_evlist(struct perf_session *session)
-{
- int i, j;
-
- session->evlist = perf_evlist__new(NULL, NULL);
- if (session->evlist == NULL)
- return -ENOMEM;
-
- for (i = 0; i < session->header.attrs; ++i) {
- struct perf_header_attr *hattr = session->header.attr[i];
- struct perf_evsel *evsel = perf_evsel__new(&hattr->attr, i);
-
- if (evsel == NULL)
- goto out_delete_evlist;
- /*
- * Do it before so that if perf_evsel__alloc_id fails, this
- * entry gets purged too at perf_evlist__delete().
- */
- perf_evlist__add(session->evlist, evsel);
- /*
- * We don't have the cpu and thread maps on the header, so
- * for allocating the perf_sample_id table we fake 1 cpu and
- * hattr->ids threads.
- */
- if (perf_evsel__alloc_id(evsel, 1, hattr->ids))
- goto out_delete_evlist;
-
- for (j = 0; j < hattr->ids; ++j)
- perf_evlist__id_hash(session->evlist, evsel, 0, j,
- hattr->id[j]);
- }
-
- return 0;
-
-out_delete_evlist:
- perf_evlist__delete(session->evlist);
- session->evlist = NULL;
- return -ENOMEM;
-}
-
static int perf_session__open(struct perf_session *self, bool force)
{
struct stat input_stat;
@@ -61,7 +21,7 @@
self->fd_pipe = true;
self->fd = STDIN_FILENO;
- if (perf_header__read(self, self->fd) < 0)
+ if (perf_session__read_header(self, self->fd) < 0)
pr_err("incompatible file format");
return 0;
@@ -93,16 +53,11 @@
goto out_close;
}
- if (perf_header__read(self, self->fd) < 0) {
+ if (perf_session__read_header(self, self->fd) < 0) {
pr_err("incompatible file format");
goto out_close;
}
- if (perf_session__read_evlist(self) < 0) {
- pr_err("Not enough memory to read the event selector list\n");
- goto out_close;
- }
-
self->size = input_stat.st_size;
return 0;
@@ -139,21 +94,10 @@
session->id_hdr_size = size;
}
-void perf_session__set_sample_id_all(struct perf_session *session, bool value)
-{
- session->sample_id_all = value;
- perf_session__id_header_size(session);
-}
-
-void perf_session__set_sample_type(struct perf_session *session, u64 type)
-{
- session->sample_type = type;
-}
-
void perf_session__update_sample_type(struct perf_session *self)
{
- self->sample_type = perf_header__sample_type(&self->header);
- self->sample_id_all = perf_header__sample_id_all(&self->header);
+ self->sample_type = perf_evlist__sample_type(self->evlist);
+ self->sample_id_all = perf_evlist__sample_id_all(self->evlist);
perf_session__id_header_size(self);
}
@@ -182,9 +126,6 @@
if (self == NULL)
goto out;
- if (perf_header__init(&self->header) < 0)
- goto out_free;
-
memcpy(self->filename, filename, len);
self->threads = RB_ROOT;
INIT_LIST_HEAD(&self->dead_threads);
@@ -208,6 +149,7 @@
if (mode == O_RDONLY) {
if (perf_session__open(self, force) < 0)
goto out_delete;
+ perf_session__update_sample_type(self);
} else if (mode == O_WRONLY) {
/*
* In O_RDONLY mode this will be performed when reading the
@@ -217,8 +159,6 @@
goto out_delete;
}
- perf_session__update_sample_type(self);
-
if (ops && ops->ordering_requires_timestamps &&
ops->ordered_samples && !self->sample_id_all) {
dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
@@ -227,9 +167,6 @@
out:
return self;
-out_free:
- free(self);
- return NULL;
out_delete:
perf_session__delete(self);
return NULL;
@@ -260,7 +197,6 @@
void perf_session__delete(struct perf_session *self)
{
- perf_header__exit(&self->header);
perf_session__destroy_kernel_maps(self);
perf_session__delete_dead_threads(self);
perf_session__delete_threads(self);
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 05dd7bc..b5b148b 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -112,8 +112,6 @@
int perf_session__create_kernel_maps(struct perf_session *self);
void perf_session__update_sample_type(struct perf_session *self);
-void perf_session__set_sample_id_all(struct perf_session *session, bool value);
-void perf_session__set_sample_type(struct perf_session *session, u64 type);
void perf_session__remove_thread(struct perf_session *self, struct thread *th);
static inline