This is a note to let you know that I've just added the patch titled
perf/x86/intel: Fix pebs event constraints for ADL
to the 5.19-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-x86-intel-fix-pebs-event-constraints-for-adl.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From cde643ff75bc20c538dfae787ca3b587bab16b50 Mon Sep 17 00:00:00 2001
From: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
Date: Thu, 18 Aug 2022 11:44:29 -0700
Subject: perf/x86/intel: Fix pebs event constraints for ADL
From: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
commit cde643ff75bc20c538dfae787ca3b587bab16b50 upstream.
According to the latest event list, the LOAD_LATENCY PEBS event only
works on the GP counter 0 and 1 for ADL and RPL.
Update the pebs event constraints table.
Fixes: f83d2f91d259 ("perf/x86/intel: Add Alder Lake Hybrid support")
Reported-by: Ammy Yi <ammy.yi@xxxxxxxxx>
Signed-off-by: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20220818184429.2355857-1-kan.liang@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/events/intel/ds.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -822,7 +822,7 @@ struct event_constraint intel_glm_pebs_e
struct event_constraint intel_grt_pebs_event_constraints[] = {
/* Allow all events as PEBS with no flags */
- INTEL_HYBRID_LAT_CONSTRAINT(0x5d0, 0xf),
+ INTEL_HYBRID_LAT_CONSTRAINT(0x5d0, 0x3),
INTEL_HYBRID_LAT_CONSTRAINT(0x6d0, 0xf),
EVENT_CONSTRAINT_END
};
Patches currently in stable-queue which might be from kan.liang@xxxxxxxxxxxxxxx are
queue-5.19/perf-x86-intel-fix-pebs-event-constraints-for-adl.patch
queue-5.19/perf-x86-lbr-enable-the-branch-type-for-the-arch-lbr-by-default.patch
