Commit-ID: ed900c054b541254f0ce5cedaf75206e29bd614e
Gitweb: http://git.kernel.org/tip/ed900c054b541254f0ce5cedaf75206e29bd614e
Author: Anton Blanchard <anton@xxxxxxxxx>
AuthorDate: Thu, 16 Jul 2009 15:44:29 +0200
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Sat, 18 Jul 2009 11:21:31 +0200
perf_counter: Log vfork as a fork event
Right now we don't output vfork events. Even though we should
always see an exec after a vfork, we may get perfcounter
samples between the vfork and exec. These samples can lead to
some confusion when parsing perfcounter data.
To keep things consistent we should always log a fork event. It
will result in a little more log data, but is less confusing to
trace parsing tools.
Signed-off-by: Anton Blanchard <anton@xxxxxxxxx>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
LKML-Reference: <20090716104817.589309391@xxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
kernel/fork.c | 9 +++------
1 files changed, 3 insertions(+), 6 deletions(-)
diff --git a/kernel/fork.c b/kernel/fork.c
index 467746b..4812d60 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1408,14 +1408,11 @@ long do_fork(unsigned long clone_flags,
if (clone_flags & CLONE_VFORK) {
p->vfork_done = &vfork;
init_completion(&vfork);
- } else if (!(clone_flags & CLONE_VM)) {
- /*
- * vfork will do an exec which will call
- * set_task_comm()
- */
- perf_counter_fork(p);
}
+ if (!(clone_flags & CLONE_THREAD))
+ perf_counter_fork(p);
+
audit_finish_fork(p);
tracehook_report_clone(regs, clone_flags, nr, p);
--
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