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perf/x86/intel: Check PEBS dyn_constraints

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Handle the interaction between ("perf/x86/intel: Update dyn_constraint
base on PEBS event precise level") and ("perf/x86/intel: Add a check
for dynamic constraints").

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
This commit is contained in:
Peter Zijlstra
2025-11-07 14:50:16 +01:00
parent bd24f9beed
commit 02da693f66
1 changed files with 12 additions and 0 deletions
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12
arch/x86/events/intel/core.c
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@@ -5425,6 +5425,8 @@ enum dyn_constr_type {
DYN_CONSTR_BR_CNTR, DYN_CONSTR_BR_CNTR,
DYN_CONSTR_ACR_CNTR, DYN_CONSTR_ACR_CNTR,
DYN_CONSTR_ACR_CAUSE, DYN_CONSTR_ACR_CAUSE,
DYN_CONSTR_PEBS,
DYN_CONSTR_PDIST,
DYN_CONSTR_MAX, DYN_CONSTR_MAX,
}; };
@@ -5434,6 +5436,8 @@ static const char * const dyn_constr_type_name[] = {
[DYN_CONSTR_BR_CNTR] = "a branch counter logging event", [DYN_CONSTR_BR_CNTR] = "a branch counter logging event",
[DYN_CONSTR_ACR_CNTR] = "an auto-counter reload event", [DYN_CONSTR_ACR_CNTR] = "an auto-counter reload event",
[DYN_CONSTR_ACR_CAUSE] = "an auto-counter reload cause event", [DYN_CONSTR_ACR_CAUSE] = "an auto-counter reload cause event",
[DYN_CONSTR_PEBS] = "a PEBS event",
[DYN_CONSTR_PDIST] = "a PEBS PDIST event",
}; };
static void __intel_pmu_check_dyn_constr(struct event_constraint *constr, static void __intel_pmu_check_dyn_constr(struct event_constraint *constr,
@@ -5538,6 +5542,14 @@ static void intel_pmu_check_dyn_constr(struct pmu *pmu,
continue; continue;
mask = hybrid(pmu, acr_cause_mask64) & GENMASK_ULL(INTEL_PMC_MAX_GENERIC - 1, 0); mask = hybrid(pmu, acr_cause_mask64) & GENMASK_ULL(INTEL_PMC_MAX_GENERIC - 1, 0);
break; break;
case DYN_CONSTR_PEBS:
if (x86_pmu.arch_pebs)
mask = hybrid(pmu, arch_pebs_cap).counters;
break;
case DYN_CONSTR_PDIST:
if (x86_pmu.arch_pebs)
mask = hybrid(pmu, arch_pebs_cap).pdists;
break;
default: default:
pr_warn("Unsupported dynamic constraint type %d\n", i); pr_warn("Unsupported dynamic constraint type %d\n", i);
} }