perf tools: Add event_update user level event
It'll serve as a base event for additional event attributes details,
that are not part of the attr event.
At the moment this event is just a dummy one without any specific
functionality. The type value will distinguish the update event details.
It'll come in the following patches.
The idea for this event is to be extensible for any update that the
event might need in the future.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-21-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index e4c68ba..cd61bb1 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -44,6 +44,7 @@
[PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG",
[PERF_RECORD_STAT] = "STAT",
[PERF_RECORD_STAT_ROUND] = "STAT_ROUND",
+ [PERF_RECORD_EVENT_UPDATE] = "EVENT_UPDATE",
};
const char *perf_event__name(unsigned int id)
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 1afaa21..6966a4b 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -231,6 +231,7 @@
PERF_RECORD_STAT_CONFIG = 75,
PERF_RECORD_STAT = 76,
PERF_RECORD_STAT_ROUND = 77,
+ PERF_RECORD_EVENT_UPDATE = 78,
PERF_RECORD_HEADER_MAX
};
@@ -307,6 +308,14 @@
u64 id[];
};
+struct event_update_event {
+ struct perf_event_header header;
+ u64 type;
+ u64 id;
+
+ char data[];
+};
+
#define MAX_EVENT_NAME 64
struct perf_trace_event_type {
@@ -456,6 +465,7 @@
struct throttle_event throttle;
struct sample_event sample;
struct attr_event attr;
+ struct event_update_event event_update;
struct event_type_event event_type;
struct tracing_data_event tracing_data;
struct build_id_event build_id;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 5ac7bdb..6b4e002 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2745,6 +2745,26 @@
return 0;
}
+int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
+ union perf_event *event,
+ struct perf_evlist **pevlist)
+{
+ struct event_update_event *ev = &event->event_update;
+ struct perf_evlist *evlist;
+ struct perf_evsel *evsel;
+
+ if (!pevlist || *pevlist == NULL)
+ return -EINVAL;
+
+ evlist = *pevlist;
+
+ evsel = perf_evlist__id2evsel(evlist, ev->id);
+ if (evsel == NULL)
+ return -EINVAL;
+
+ return 0;
+}
+
int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd,
struct perf_evlist *evlist,
perf_event__handler_t process)
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 05f27cb..1e843c6 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -107,6 +107,9 @@
perf_event__handler_t process);
int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
struct perf_evlist **pevlist);
+int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
+ union perf_event *event,
+ struct perf_evlist **pevlist);
int perf_event__synthesize_tracing_data(struct perf_tool *tool,
int fd, struct perf_evlist *evlist,
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 5b3a81a..49e5cdc 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -205,6 +205,15 @@
return 0;
}
+static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
+ union perf_event *event __maybe_unused,
+ struct perf_evlist **pevlist
+ __maybe_unused)
+{
+ dump_printf(": unhandled!\n");
+ return 0;
+}
+
static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
union perf_event *event __maybe_unused,
struct perf_sample *sample __maybe_unused,
@@ -374,6 +383,8 @@
tool->unthrottle = process_event_stub;
if (tool->attr == NULL)
tool->attr = process_event_synth_attr_stub;
+ if (tool->event_update == NULL)
+ tool->event_update = process_event_synth_event_update_stub;
if (tool->tracing_data == NULL)
tool->tracing_data = process_event_synth_tracing_data_stub;
if (tool->build_id == NULL)
@@ -625,6 +636,13 @@
mem_bswap_64(event->attr.id, size);
}
+static void perf_event__event_update_swap(union perf_event *event,
+ bool sample_id_all __maybe_unused)
+{
+ event->event_update.type = bswap_64(event->event_update.type);
+ event->event_update.id = bswap_64(event->event_update.id);
+}
+
static void perf_event__event_type_swap(union perf_event *event,
bool sample_id_all __maybe_unused)
{
@@ -779,6 +797,7 @@
[PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
[PERF_RECORD_STAT] = perf_event__stat_swap,
[PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
+ [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
[PERF_RECORD_HEADER_MAX] = NULL,
};
@@ -1290,6 +1309,8 @@
perf_session__set_comm_exec(session);
}
return err;
+ case PERF_RECORD_EVENT_UPDATE:
+ return tool->event_update(tool, event, &session->evlist);
case PERF_RECORD_HEADER_EVENT_TYPE:
/*
* Depreceated, but we need to handle it for sake
diff --git a/tools/perf/util/tool.h b/tools/perf/util/tool.h
index d04d9e5..55de4cf 100644
--- a/tools/perf/util/tool.h
+++ b/tools/perf/util/tool.h
@@ -50,6 +50,7 @@
throttle,
unthrottle;
event_attr_op attr;
+ event_attr_op event_update;
event_op2 tracing_data;
event_oe finished_round;
event_op2 build_id,