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perf thrad_map: Add comm string into array

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Adding support to hold comm name together with pids in 'struct
thread_map'. It will be useful for --per-thread option to display task
pid together with task name.

Adding thread_map__read_comms function that reads/set
comm string for the 'struct thread_map'.

Getting the task name from /proc/$pid/comm.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
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/r/1435310967-14570-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2015-06-26 11:29:07 +02:00
committed by Arnaldo Carvalho de Melo
parent 62eea46438
commit 792402fd5c
3 changed files with 68 additions and 0 deletions
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8
tools/perf/util/thread_map.h
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@@ -7,6 +7,7 @@
struct thread_map_data {
pid_t pid;
char *comm;
};
struct thread_map {
@@ -44,4 +45,11 @@ thread_map__set_pid(struct thread_map *map, int thread, pid_t pid)
{
map->map[thread].pid = pid;
}
static inline char *thread_map__comm(struct thread_map *map, int thread)
{
return map->map[thread].comm;
}
void thread_map__read_comms(struct thread_map *threads);
#endif /* __PERF_THREAD_MAP_H */