]> git.ipfire.org Git - thirdparty/kernel/stable.git/commitdiff
perf/x86/intel: Enable auto counter reload for DMR
authorDapeng Mi <dapeng1.mi@linux.intel.com>
Thu, 30 Apr 2026 00:25:57 +0000 (08:25 +0800)
committerPeter Zijlstra <peterz@infradead.org>
Tue, 5 May 2026 10:47:22 +0000 (12:47 +0200)
Panther cove µarch starts to support auto counter reload (ACR), but the
static_call intel_pmu_enable_acr_event() is not updated for the Panther
Cove µarch used by DMR. It leads to the auto counter reload is not
really enabled on DMR.

Update static_call intel_pmu_enable_acr_event() in intel_pmu_init_pnc().

Fixes: d345b6bb8860 ("perf/x86/intel: Add core PMU support for DMR")
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260430002558.712334-5-dapeng1.mi@linux.intel.com
arch/x86/events/intel/core.c

index ead6d95cec6a015f4e4a139138133884b3d3fc4a..dd1e3aa75ee9b739fe2b61a24134c2ed35e65440 100644 (file)
@@ -7531,6 +7531,7 @@ static __always_inline void intel_pmu_init_pnc(struct pmu *pmu)
        hybrid(pmu, event_constraints) = intel_pnc_event_constraints;
        hybrid(pmu, pebs_constraints) = intel_pnc_pebs_event_constraints;
        hybrid(pmu, extra_regs) = intel_pnc_extra_regs;
+       static_call_update(intel_pmu_enable_acr_event, intel_pmu_enable_acr);
 }
 
 static __always_inline void intel_pmu_init_skt(struct pmu *pmu)