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perf timechart: Use tid not pid for COMM change

commit 8f06d7e upstream.

A process that changes its comm field, does this on a per kernel
task struct basis. The timechart tool used, incorrectly, the pid
to track this, and should have used the tid instead...

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20100116125319.34ac3edd@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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fenrus75 authored and gregkh committed Jan 16, 2010
1 parent f2fa92b commit 5a20267b12fec85520acc1e839ee61f2ea16413d
Showing with 1 addition and 1 deletion.
  1. +1 −1 tools/perf/builtin-timechart.c
@@ -275,7 +275,7 @@ static u64 cpus_pstate_state[MAX_CPUS];
static int
process_comm_event(event_t *event)
{
- pid_set_comm(event->comm.pid, event->comm.comm);
+ pid_set_comm(event->comm.tid, event->comm.comm);
return 0;
}
static int

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