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From: kan.liang@linux.intel.com
To: peterz@infradead.org, acme@redhat.com, linux-kernel@vger.kernel.org
Cc: alexander.shishkin@linux.intel.com, ak@linux.intel.com,
	Kan Liang <kan.liang@linux.intel.com>,
	Ammy Yi <ammy.yi@intel.com>,
	stable@vger.kernel.org
Subject: [PATCH] perf/x86/intel: Fix pebs event constraints for ADL
Date: Thu, 18 Aug 2022 11:44:29 -0700	[thread overview]
Message-ID: <20220818184429.2355857-1-kan.liang@linux.intel.com> (raw)

From: Kan Liang <kan.liang@linux.intel.com>

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@intel.com> 
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: stable@vger.kernel.org
---
 arch/x86/events/intel/ds.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index 629a18403e35..578adf861b98 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -822,7 +822,7 @@ struct event_constraint intel_glm_pebs_event_constraints[] = {
 
 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
 };
-- 
2.35.1


             reply	other threads:[~2022-08-18 18:45 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-18 18:44 kan.liang [this message]
2022-08-22  9:00 ` [tip: perf/urgent] " tip-bot2 for Kan Liang

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