This is a note to let you know that I've just added the patch titled
perf: arm_cspmu: Reject events meant for other PMUs
to the 6.6-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:
perf-arm_cspmu-reject-events-meant-for-other-pmus.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 15c7ef7341a2e54cfa12ac502c65d6fd2cce2b62 Mon Sep 17 00:00:00 2001
From: Ilkka Koskinen <ilkka@xxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 2 Nov 2023 17:16:54 -0700
Subject: perf: arm_cspmu: Reject events meant for other PMUs
From: Ilkka Koskinen <ilkka@xxxxxxxxxxxxxxxxxxxxxx>
commit 15c7ef7341a2e54cfa12ac502c65d6fd2cce2b62 upstream.
Coresight PMU driver didn't reject events meant for other PMUs.
This caused some of the Core PMU events disappearing from
the output of "perf list". In addition, trying to run e.g.
$ perf stat -e r2 sleep 1
made Coresight PMU driver to handle the event instead of letting
Core PMU driver to deal with it.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: e37dfd65731d ("perf: arm_cspmu: Add support for ARM CoreSight PMU driver")
Signed-off-by: Ilkka Koskinen <ilkka@xxxxxxxxxxxxxxxxxxxxxx>
Acked-by: Will Deacon <will@xxxxxxxxxx>
Reviewed-by: Besar Wicaksono <bwicaksono@xxxxxxxxxx>
Acked-by: Mark Rutland <mark.rutland@xxxxxxx>
Reviewed-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Link: https://lore.kernel.org/r/20231103001654.35565-1-ilkka@xxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/perf/arm_cspmu/arm_cspmu.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/perf/arm_cspmu/arm_cspmu.c
+++ b/drivers/perf/arm_cspmu/arm_cspmu.c
@@ -635,6 +635,9 @@ static int arm_cspmu_event_init(struct p
cspmu = to_arm_cspmu(event->pmu);
+ if (event->attr.type != event->pmu->type)
+ return -ENOENT;
+
/*
* Following other "uncore" PMUs, we do not support sampling mode or
* attach to a task (per-process mode).
Patches currently in stable-queue which might be from ilkka@xxxxxxxxxxxxxxxxxxxxxx are
queue-6.6/perf-arm_cspmu-reject-events-meant-for-other-pmus.patch
