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

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Message-ID: <176589291813.510.6479806528717518018.tip-bot2@tip-bot2>
Date: Tue, 16 Dec 2025 13:48:38 -0000
From: "tip-bot2 for Zide Chen" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Zide Chen <zide.chen@...el.com>, Ingo Molnar <mingo@...nel.org>,
 Dapeng Mi <dapeng1.mi@...ux.intel.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: perf/core] perf/x86/intel/cstate: Add Diamond Rapids support

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

Commit-ID:     7ac422cf7b16ec524bcd8e017459e328a4103f63
Gitweb:        https://git.kernel.org/tip/7ac422cf7b16ec524bcd8e017459e328a4103f63
Author:        Zide Chen <zide.chen@...el.com>
AuthorDate:    Mon, 15 Dec 2025 10:25:20 -08:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Tue, 16 Dec 2025 14:35:59 +01:00

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>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Reviewed-by: Dapeng Mi <dapeng1.mi@...ux.intel.com>
Link: https://patch.msgid.link/20251215182520.115822-3-zide.chen@intel.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 008f8ea..1e2658b 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),