linux-kernel - [PATCH 3/3] perf/x86/intel/cstate: Add Diamond Rapids support

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Message-ID: <20251215182520.115822-3-zide.chen@intel.com>
Date: Mon, 15 Dec 2025 10:25:20 -0800
From: Zide Chen <zide.chen@...el.com>
To: Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Eranian Stephane <eranian@...gle.com>
Cc: linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	Dapeng Mi <dapeng1.mi@...ux.intel.com>,
	Xudong Hao <xudong.hao@...el.com>,
	Falcon Thomas <thomas.falcon@...el.com>,
	Zide Chen <zide.chen@...el.com>
Subject: [PATCH 3/3] perf/x86/intel/cstate: Add Diamond Rapids support

>From a C-state residency profiling perspective, Diamond Rapids is
similar to SRF and GNR, supporting core C1/C6, module C6, and
package C2/C6 residency counters.  Similar to CWF, the C1E residency
can be accessed via PMT only.

Signed-off-by: Zide Chen <zide.chen@...el.com>
---
 arch/x86/events/intel/cstate.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/events/intel/cstate.c b/arch/x86/events/intel/cstate.c
index 008f8ea59315..1e2658b60d91 100644
--- a/arch/x86/events/intel/cstate.c
+++ b/arch/x86/events/intel/cstate.c
@@ -652,6 +652,7 @@ static const struct x86_cpu_id intel_cstates_match[] __initconst = {
 	X86_MATCH_VFM(INTEL_EMERALDRAPIDS_X,	&icx_cstates),
 	X86_MATCH_VFM(INTEL_GRANITERAPIDS_X,	&icx_cstates),
 	X86_MATCH_VFM(INTEL_GRANITERAPIDS_D,	&icx_cstates),
+	X86_MATCH_VFM(INTEL_DIAMONDRAPIDS_X,	&srf_cstates),
 
 	X86_MATCH_VFM(INTEL_TIGERLAKE_L,	&icl_cstates),
 	X86_MATCH_VFM(INTEL_TIGERLAKE,		&icl_cstates),
-- 
2.52.0