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perf tools: Use machine->pid for tgid if machine is guest.

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When we synthesize an comm event, if machine is guest, we should
use the pid of machine as the event->comm.pid, rather than tgid
of thread.

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Link: http://lkml.kernel.org/r/22455abe107c618a361e7b667ad0f098f7c9b4a3.1387572416.git.yangds.fnst@cn.fujitsu.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Dongsheng Yang 2013-12-20 15:52:59 -05:00 committed by Arnaldo Carvalho de Melo
parent 73547aacdc
commit f5db57c4c4
1 changed files with 6 additions and 2 deletions
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8
tools/perf/util/event.c
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@ -106,8 +106,12 @@ static pid_t perf_event__synthesize_comm(struct perf_tool *tool,
memset(&event->comm, 0, sizeof(event->comm));
tgid = perf_event__get_comm_tgid(pid, event->comm.comm,
sizeof(event->comm.comm));
if (machine__is_host(machine))
tgid = perf_event__get_comm_tgid(pid, event->comm.comm,
sizeof(event->comm.comm));
else
tgid = machine->pid;
if (tgid < 0)
goto out;