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arm64: perf: fix group validation when using enable_on_exec 

This is a port of cb2d8b342a ("ARM: 7698/1: perf: fix group validation
when using enable_on_exec") to arm64, which fixes the event validation
checking so that events in the OFF state are still considered when
enable_on_exec is true.

Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Will Deacon 2013-08-20 11:47:41 +01:00 committed by Catalin Marinas
parent ee7538a008
commit 8455e6ec70
1 changed files with 4 additions and 1 deletions
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5
arch/arm64/kernel/perf_event.c
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@ -325,7 +325,10 @@ validate_event(struct pmu_hw_events *hw_events,
if (is_software_event(event))
return 1;
if (event->pmu != leader_pmu || event->state <= PERF_EVENT_STATE_OFF)
if (event->pmu != leader_pmu || event->state < PERF_EVENT_STATE_OFF)
return 1;
if (event->state == PERF_EVENT_STATE_OFF && !event->attr.enable_on_exec)
return 1;
return armpmu->get_event_idx(hw_events, &fake_event) >= 0;