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>
diff --git a/drivers/oprofile/oprofile_perf.c b/drivers/oprofile/oprofile_perf.c
index ebb40cb..f3d3df2 100644
--- a/drivers/oprofile/oprofile_perf.c
+++ b/drivers/oprofile/oprofile_perf.c
@@ -84,6 +84,7 @@
if (IS_ERR(pevent)) {
ret = PTR_ERR(pevent);
} else if (pevent->state != PERF_EVENT_STATE_ACTIVE) {
+ perf_event_release_kernel(pevent);
pr_warning("oprofile: failed to enable event %d "
"on CPU %d\n", event, cpu);
ret = -EBUSY;