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perf_counter: Add a comm hook for pure fork()s

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I noticed missing COMM events and found that we missed
reporting them for pure forks.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-06-03 11:23:56 +02:00 • committed by Ingo Molnar
parent dcd945e0d8
commit 226f62fdd5
1 changed files with 6 additions and 0 deletions
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6
kernel/fork.c
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@ -1412,6 +1412,12 @@ long do_fork(unsigned long clone_flags,
if (clone_flags & CLONE_VFORK) { if (clone_flags & CLONE_VFORK) {
p->vfork_done = &vfork; p->vfork_done = &vfork;
init_completion(&vfork); init_completion(&vfork);
} else {
/*
* vfork will do an exec which will call
* set_task_comm()
*/
perf_counter_comm(p);
} }
audit_finish_fork(p); audit_finish_fork(p);