From: Zide Chen <zide.chen@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@linux.intel.com>,
Zide Chen <zide.chen@intel.com>,
Xudong Hao <xudong.hao@intel.com>,
Falcon Thomas <thomas.falcon@intel.com>,
Zhang Rui <rui.zhang@intel.com>,
Kan Liang <kan.liang@linux.intel.com>
Subject: [PATCH RESEND 2/3] perf/x86/intel/cstate: Remove PC3 support from LunarLake
Date: Thu, 23 Oct 2025 15:37:52 -0700 [thread overview]
Message-ID: <20251023223754.1743928-3-zide.chen@intel.com> (raw)
In-Reply-To: <20251023223754.1743928-1-zide.chen@intel.com>
From: Zhang Rui <rui.zhang@intel.com>
LunarLake doesn't support Package C3. Remove the PC3 residency counter
support from LunarLake.
Fixes: 26579860fbd5 ("perf/x86/intel/cstate: Add Lunarlake support")
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.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 a5f2e0be2337..2bfd011f99da 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),
};
--
2.51.1
next prev parent reply other threads:[~2025-10-23 22:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-23 22:37 [PATCH RESEND 0/3] cstate support for CWF, LNL and PTL Zide Chen
2025-10-23 22:37 ` [PATCH RESEND 1/3] perf/x86/intel/cstate: Add Clearwater Forest support Zide Chen
2025-10-30 9:09 ` Ingo Molnar
2025-10-30 17:38 ` Chen, Zide
2025-10-23 22:37 ` Zide Chen [this message]
2025-10-23 22:37 ` [PATCH RESEND 3/3] perf/x86/intel/cstate: Add Pantherlake support Zide Chen
2025-10-24 7:43 ` [PATCH RESEND 0/3] cstate support for CWF, LNL and PTL Mi, Dapeng
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