linux-kernel - [tip: perf/core] perf/x86/intel/cstate: Add Pantherlake support

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Message-ID: <176173058398.2601451.16733260783417618599.tip-bot2@tip-bot2>
Date: Wed, 29 Oct 2025 09:36:23 -0000
From: "tip-bot2 for Zhang Rui" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Zhang Rui <rui.zhang@...el.com>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>,
 Kan Liang <kan.liang@...ux.intel.com>, Dapeng Mi <dapeng1.mi@...ux.intel.com>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: perf/core] perf/x86/intel/cstate: Add Pantherlake support

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     34976eaf5f83d2bda76eeb54c5bbcafe87245e82
Gitweb:        https://git.kernel.org/tip/34976eaf5f83d2bda76eeb54c5bbcafe87245e82
Author:        Zhang Rui <rui.zhang@...el.com>
AuthorDate:    Thu, 23 Oct 2025 15:37:53 -07:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Wed, 29 Oct 2025 10:29:54 +01:00

perf/x86/intel/cstate: Add Pantherlake support

Like Lunarlake, Pantherlake supports CC1/CC6/CC7 and PC2/PC6/PC10.

Signed-off-by: Zhang Rui <rui.zhang@...el.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Kan Liang <kan.liang@...ux.intel.com>
Reviewed-by: Dapeng Mi <dapeng1.mi@...ux.intel.com>
Link: https://patch.msgid.link/20251023223754.1743928-4-zide.chen@intel.com
---
 arch/x86/events/intel/cstate.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/arch/x86/events/intel/cstate.c b/arch/x86/events/intel/cstate.c
index 2bfd011..fa67fda 100644
--- a/arch/x86/events/intel/cstate.c
+++ b/arch/x86/events/intel/cstate.c
@@ -41,7 +41,7 @@
  *	MSR_CORE_C1_RES: CORE C1 Residency Counter
  *			 perf code: 0x00
  *			 Available model: SLM,AMT,GLM,CNL,ICX,TNT,ADL,RPL
- *					  MTL,SRF,GRR,ARL,LNL
+ *					  MTL,SRF,GRR,ARL,LNL,PTL
  *			 Scope: Core (each processor core has a MSR)
  *	MSR_CORE_C3_RESIDENCY: CORE C3 Residency Counter
  *			       perf code: 0x01
@@ -53,18 +53,19 @@
  *			       Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW,
  *						SKL,KNL,GLM,CNL,KBL,CML,ICL,ICX,
  *						TGL,TNT,RKL,ADL,RPL,SPR,MTL,SRF,
- *						GRR,ARL,LNL
+ *						GRR,ARL,LNL,PTL
  *			       Scope: Core
  *	MSR_CORE_C7_RESIDENCY: CORE C7 Residency Counter
  *			       perf code: 0x03
  *			       Available model: SNB,IVB,HSW,BDW,SKL,CNL,KBL,CML,
- *						ICL,TGL,RKL,ADL,RPL,MTL,ARL,LNL
+ *						ICL,TGL,RKL,ADL,RPL,MTL,ARL,LNL,
+ *						PTL
  *			       Scope: Core
  *	MSR_PKG_C2_RESIDENCY:  Package C2 Residency Counter.
  *			       perf code: 0x00
  *			       Available model: SNB,IVB,HSW,BDW,SKL,KNL,GLM,CNL,
  *						KBL,CML,ICL,ICX,TGL,TNT,RKL,ADL,
- *						RPL,SPR,MTL,ARL,LNL,SRF
+ *						RPL,SPR,MTL,ARL,LNL,SRF,PTL
  *			       Scope: Package (physical package)
  *	MSR_PKG_C3_RESIDENCY:  Package C3 Residency Counter.
  *			       perf code: 0x01
@@ -77,7 +78,7 @@
  *			       Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW,
  *						SKL,KNL,GLM,CNL,KBL,CML,ICL,ICX,
  *						TGL,TNT,RKL,ADL,RPL,SPR,MTL,SRF,
- *						ARL,LNL
+ *						ARL,LNL,PTL
  *			       Scope: Package (physical package)
  *	MSR_PKG_C7_RESIDENCY:  Package C7 Residency Counter.
  *			       perf code: 0x03
@@ -96,7 +97,7 @@
  *	MSR_PKG_C10_RESIDENCY: Package C10 Residency Counter.
  *			       perf code: 0x06
  *			       Available model: HSW ULT,KBL,GLM,CNL,CML,ICL,TGL,
- *						TNT,RKL,ADL,RPL,MTL,ARL,LNL
+ *						TNT,RKL,ADL,RPL,MTL,ARL,LNL,PTL
  *			       Scope: Package (physical package)
  *	MSR_MODULE_C6_RES_MS:  Module C6 Residency Counter.
  *			       perf code: 0x00
@@ -652,6 +653,7 @@ static const struct x86_cpu_id intel_cstates_match[] __initconst = {
 	X86_MATCH_VFM(INTEL_ARROWLAKE_H,	&adl_cstates),
 	X86_MATCH_VFM(INTEL_ARROWLAKE_U,	&adl_cstates),
 	X86_MATCH_VFM(INTEL_LUNARLAKE_M,	&lnl_cstates),
+	X86_MATCH_VFM(INTEL_PANTHERLAKE_L,	&lnl_cstates),
 	{ },
 };
 MODULE_DEVICE_TABLE(x86cpu, intel_cstates_match);