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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2010-06-29 18:08:13 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2010-08-19 01:29:35 +0200 |
| commit | c1a65932fd7216fdc9a0db8bbffe1d47842f862c (patch) | |
| tree | 5c7b3c616f850ba549abdd645cfa9d4121eb8623 /arch/arm/kernel/perf_event.c | |
| parent | 4694153c252a6ae19704b5bb66466050256395a4 (diff) | |
| download | lwn-c1a65932fd7216fdc9a0db8bbffe1d47842f862c.tar.gz lwn-c1a65932fd7216fdc9a0db8bbffe1d47842f862c.zip | |
perf: Drop unappropriate tests on arch callchains
Drop the TASK_RUNNING test on user tasks for callchains as
this check doesn't seem to make any sense.
Also remove the tests for !current that is not supposed to
happen and current->pid as this should be handled at the
generic level, with exclude_idle attribute.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: David Miller <davem@davemloft.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Borislav Petkov <bp@amd64.org>
Diffstat (limited to 'arch/arm/kernel/perf_event.c')
| -rw-r--r-- | arch/arm/kernel/perf_event.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index 417c392ddf1c..fdcb0be47df1 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -3107,12 +3107,6 @@ perf_do_callchain(struct pt_regs *regs, is_user = user_mode(regs); - if (!current || !current->pid) - return; - - if (is_user && current->state != TASK_RUNNING) - return; - if (!is_user) perf_callchain_kernel(regs, entry); |