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From: Dapeng Mi <dapeng1.mi@linux.intel.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Ian Rogers <irogers@google.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Andi Kleen <ak@linux.intel.com>,
	Eranian Stephane <eranian@google.com>
Cc: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
	Dapeng Mi <dapeng1.mi@intel.com>, Zide Chen <zide.chen@intel.com>,
	Falcon Thomas <thomas.falcon@intel.com>,
	Xudong Hao <xudong.hao@intel.com>,
	Dapeng Mi <dapeng1.mi@linux.intel.com>
Subject: [PATCH 07/12] perf/x86/intel: Correct Panther cove data source snoop states
Date: Thu, 17 Sep 2026 09:52:29 +0800	[thread overview]
Message-ID: <20260917015234.981153-8-dapeng1.mi@linux.intel.com> (raw)
In-Reply-To: <20260917015234.981153-1-dapeng1.mi@linux.intel.com>

For Panthercove, the snoop states for the data source encodings
"Prefetch Promotion" and "Cross Core Prefetch Promotion" should be
SNOOP_NONE instead of SNOOP_MISS.

Correct the incorrect snooping states for Panther cove.

Fixes: d2bdcde9626c ("perf/x86/intel: Add support for PEBS memory auxiliary info field in DMR")
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
---
 arch/x86/events/intel/ds.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index 7a67fb675b43..24ec9bc63d2d 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -277,8 +277,8 @@ static u64 pnc_pebs_l2_hit_data_source[PNC_PEBS_DATA_SOURCE_MAX] = {
 	0,							/* 0x06: Reserved */
 	OP_LH | P(LVL, L2)  | LEVEL(L2) | P(SNOOP, HIT),	/* 0x07: L2 Hit Snoop HIT */
 	OP_LH | P(LVL, L2)  | LEVEL(L2) | P(SNOOP, HITM),	/* 0x08: L2 Hit Snoop Hit Modified */
-	OP_LH | P(LVL, L2)  | LEVEL(L2) | P(SNOOP, MISS),	/* 0x09: Prefetch Promotion */
-	OP_LH | P(LVL, L2)  | LEVEL(L2) | P(SNOOP, MISS),	/* 0x0a: Cross Core Prefetch Promotion */
+	OP_LH | P(LVL, L2)  | LEVEL(L2) | P(SNOOP, NONE),	/* 0x09: Prefetch Promotion */
+	OP_LH | P(LVL, L2)  | LEVEL(L2) | P(SNOOP, NONE),	/* 0x0a: Cross Core Prefetch Promotion */
 	0,							/* 0x0b: Reserved */
 	0,							/* 0x0c: Reserved */
 	0,							/* 0x0d: Reserved */
-- 
2.34.1


  parent reply	other threads:[~2026-09-17  2:00 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-17  1:52 [PATCH 00/12] perf/x86/intel: PEBS data-source fixes and OMR updates Dapeng Mi
2026-09-17  1:52 ` [PATCH 01/12] perf/x86/intel: Fix GRT PEBS load/store direction for latency events Dapeng Mi
2026-09-17  2:14   ` sashiko-bot
2026-09-17  1:52 ` [PATCH 02/12] perf/x86/intel: Fix CMT " Dapeng Mi
2026-09-17  2:08   ` sashiko-bot
2026-09-17  1:52 ` [PATCH 03/12] perf/x86/intel: Fix DKT " Dapeng Mi
2026-09-17  2:09   ` sashiko-bot
2026-09-17  1:52 ` [PATCH 04/12] perf/x86/intel: Update arw_latency_data() mem-op direction handling Dapeng Mi
2026-09-17  2:21   ` sashiko-bot
2026-09-17  1:52 ` [PATCH 05/12] perf/x86/intel: Remove incorrect LionCove PEBS data-source constraints Dapeng Mi
2026-09-17  2:10   ` sashiko-bot
2026-09-17  1:52 ` [PATCH 06/12] perf/x86/intel: Remove incorrect PantherCove " Dapeng Mi
2026-09-17  2:10   ` sashiko-bot
2026-09-17  1:52 ` Dapeng Mi [this message]
2026-09-17  2:05   ` [PATCH 07/12] perf/x86/intel: Correct Panther cove data source snoop states sashiko-bot
2026-09-17  1:52 ` [PATCH 08/12] perf/x86/intel: Delete dead NVL PEBS data-source init call Dapeng Mi
2026-09-17  2:11   ` sashiko-bot
2026-09-17  1:52 ` [PATCH 09/12] perf/x86/intel: Constrain PantherCove UOPS_DISPATCHED events Dapeng Mi
2026-09-17  2:03   ` sashiko-bot
2026-09-17  1:52 ` [PATCH 10/12] perf/x86/intel: Add precise OMR event support for DMR/NVL Dapeng Mi
2026-09-17  2:11   ` sashiko-bot
2026-09-17  1:52 ` [PATCH 11/12] perf/x86/intel: Rename DMR offcore_rsp attribute to offmodule_rsp Dapeng Mi
2026-09-17  2:11   ` sashiko-bot
2026-09-17  1:52 ` [PATCH 12/12] perf/x86/intel: Rename NVL " Dapeng Mi
2026-09-17  2:14   ` sashiko-bot

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