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| author | Zide Chen <zide.chen@intel.com> | 2025-10-23 15:37:51 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-10-29 10:29:53 +0100 |
| commit | e39b82f6cb0526c551d4651ba6d286b6b1f9e9c3 (patch) | |
| tree | 48e7ff42449b08112c19ba3ea7fc9eefecab5d5e | |
| parent | 45e1dccc0653c50e377dae57ef086a8d0f71061d (diff) | |
| download | linux-e39b82f6cb0526c551d4651ba6d286b6b1f9e9c3.tar.gz linux-e39b82f6cb0526c551d4651ba6d286b6b1f9e9c3.zip | |
perf/x86/intel/cstate: Add Clearwater Forest support
Clearwater Forest is based on the Darkmont Atom microarchitecture.
>From the perspective of C-state residency profiling, it supports the
same residency counters as Sierra Forest: CC1/CC6, PC2/PC6, and MC6.
Please note that the C1E residency counter can only be read via PMT,
not MSR. Therefore, tools relying on the perf_event framework cannot
access the C1E residency.
Signed-off-by: Zhenyu Wang <zhenyuw.linux@gmail.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Link: https://patch.msgid.link/20251023223754.1743928-2-zide.chen@intel.com
| -rw-r--r-- | arch/x86/events/intel/cstate.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/events/intel/cstate.c b/arch/x86/events/intel/cstate.c index ec753e39b007..a5f2e0be2337 100644 --- a/arch/x86/events/intel/cstate.c +++ b/arch/x86/events/intel/cstate.c @@ -628,6 +628,7 @@ static const struct x86_cpu_id intel_cstates_match[] __initconst = { X86_MATCH_VFM(INTEL_ATOM_GRACEMONT, &adl_cstates), X86_MATCH_VFM(INTEL_ATOM_CRESTMONT_X, &srf_cstates), X86_MATCH_VFM(INTEL_ATOM_CRESTMONT, &grr_cstates), + X86_MATCH_VFM(INTEL_ATOM_DARKMONT_X, &srf_cstates), X86_MATCH_VFM(INTEL_ICELAKE_L, &icl_cstates), X86_MATCH_VFM(INTEL_ICELAKE, &icl_cstates), |