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oprofile, ARM: Release resources on failure 

This patch fixes a resource leak on failure, where the
oprofilefs and some counters may not released properly.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: <stable@kernel.org> # .35.x
LKML-Reference: <20100929145225.GJ13563@erda.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Robert Richter 2010-09-29 16:52:25 +02:00
parent ad0f7cfaa8
commit 81771974ae
1 changed files with 1 additions and 0 deletions
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1
drivers/oprofile/oprofile_perf.c
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@ -84,6 +84,7 @@ static int op_create_counter(int cpu, int event)
if (IS_ERR(pevent)) { if (IS_ERR(pevent)) {
ret = PTR_ERR(pevent); ret = PTR_ERR(pevent);
} else if (pevent->state != PERF_EVENT_STATE_ACTIVE) { } else if (pevent->state != PERF_EVENT_STATE_ACTIVE) {
perf_event_release_kernel(pevent);
pr_warning("oprofile: failed to enable event %d " pr_warning("oprofile: failed to enable event %d "
"on CPU %d\n", event, cpu); "on CPU %d\n", event, cpu);
ret = -EBUSY; ret = -EBUSY;