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perf tools: Add time argument on COMM setting

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This way we can later delimit a lifecycle for the COMM and map a hist to
a precise COMM:timeslice couple.

PERF_RECORD_COMM and PERF_RECORD_FORK events that don't have
PERF_SAMPLE_TIME samples can only send 0 value as a timestamp and thus
should overwrite any previous COMM on a given thread because there is no
sensible way to keep track of all the comms lifecycles in a thread
without time informations.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-6tyow99vgmmtt9qwr2u2lqd7@git.kernel.org
[ Made it cope with PERF_RECORD_MMAP2 ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Frederic Weisbecker
2013-09-11 16:18:24 +02:00
committed by Arnaldo Carvalho de Melo
parent b9c5143a01
commit 162f0befda
10 changed files with 67 additions and 53 deletions
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4
tools/perf/util/thread.h
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@@ -33,11 +33,11 @@ static inline void thread__exited(struct thread *thread)
thread->dead = true;
}
int thread__set_comm(struct thread *self, const char *comm);
int thread__set_comm(struct thread *thread, const char *comm, u64 timestamp);
int thread__comm_len(struct thread *self);
const char *thread__comm_str(const struct thread *thread);
void thread__insert_map(struct thread *self, struct map *map);
int thread__fork(struct thread *self, struct thread *parent);
int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp);
size_t thread__fprintf(struct thread *thread, FILE *fp);
static inline struct map *thread__find_map(struct thread *self,