This is a note to let you know that I've just added the patch titled
arm64: perf: fix group validation when using enable_on_exec
to the 3.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-perf-fix-group-validation-when-using-enable_on_exec.patch
and it can be found in the queue-3.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8455e6ec70f33b0e8c3ffd47067e00481f09f454 Mon Sep 17 00:00:00 2001
From: Will Deacon <will.deacon@xxxxxxx>
Date: Tue, 20 Aug 2013 11:47:41 +0100
Subject: arm64: perf: fix group validation when using enable_on_exec
From: Will Deacon <will.deacon@xxxxxxx>
commit 8455e6ec70f33b0e8c3ffd47067e00481f09f454 upstream.
This is a port of cb2d8b342aa0 ("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.
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/kernel/perf_event.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -325,7 +325,10 @@ validate_event(struct pmu_hw_events *hw_
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;
Patches currently in stable-queue which might be from will.deacon@xxxxxxx are
queue-3.11/arm64-perf-fix-group-validation-when-using-enable_on_exec.patch
queue-3.11/arm64-perf-fix-armv8-evtype_mask-to-include-nsh-bit.patch
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