linux-kernel - [PATCH 1/2] perf/x86/intel/cstate: Remove PC3 support from LunarLake

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Message-ID: <20250625010822.250826-1-rui.zhang@intel.com>
Date: Wed, 25 Jun 2025 09:08:21 +0800
From: Zhang Rui <rui.zhang@...el.com>
To: peterz@...radead.org
Cc: mingo@...hat.com,
	tglx@...utronix.de,
	bp@...en8.de,
	dave.hansen@...ux.intel.com,
	x86@...nel.org,
	linux-perf-users@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	ak@...ux.intel.com,
	kan.liang@...ux.intel.com
Subject: [PATCH 1/2] perf/x86/intel/cstate: Remove PC3 support from LunarLake

LunarLake doesn't support Package C3. Remove the PC3 residency counter
support from LunarLake.

Fixes: 26579860fbd5 ("perf/x86/intel/cstate: Add Lunarlake support")
Signed-off-by: Zhang Rui <rui.zhang@...el.com>
---
 arch/x86/events/intel/cstate.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/events/intel/cstate.c b/arch/x86/events/intel/cstate.c
index ec753e39b007..6f5286a99e0c 100644
--- a/arch/x86/events/intel/cstate.c
+++ b/arch/x86/events/intel/cstate.c
@@ -70,7 +70,7 @@
  *			       perf code: 0x01
  *			       Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL,KNL,
  *						GLM,CNL,KBL,CML,ICL,TGL,TNT,RKL,
- *						ADL,RPL,MTL,ARL,LNL
+ *						ADL,RPL,MTL,ARL
  *			       Scope: Package (physical package)
  *	MSR_PKG_C6_RESIDENCY:  Package C6 Residency Counter.
  *			       perf code: 0x02
@@ -522,7 +522,6 @@ static const struct cstate_model lnl_cstates __initconst = {
 				  BIT(PERF_CSTATE_CORE_C7_RES),
 
 	.pkg_events		= BIT(PERF_CSTATE_PKG_C2_RES) |
-				  BIT(PERF_CSTATE_PKG_C3_RES) |
 				  BIT(PERF_CSTATE_PKG_C6_RES) |
 				  BIT(PERF_CSTATE_PKG_C10_RES),
 };
-- 
2.43.0