Nia Su aa9265d507 perf evlist: Don't restrict uncore events to PMU CPUs ... The PMU CPU map has different semantics for core and uncore PMUs. For core PMUs, pmu_cpus contains the CPUs on which the event can be opened. Intersect the user-requested CPU map with the PMU CPU map to reject CPUs unsupported by the PMU. For uncore PMUs, pmu_cpus is read from the PMU's cpumask sysfs attribute, which lists the default CPU to open the event on per socket/die, not the set of CPUs it can only be opened on. The user-requested CPU may override these defaults, and the driver can redirect the event to the appropriate control CPU. Currently, __perf_evlist__propagate_maps() intersects the user-requested CPU map with pmu_cpus for all PMUs. If the user-requested CPU is not in pmu_cpus, the intersection becomes empty and the evsel is removed before perf_event_open() is called. Add evsel->is_pmu_uncore, set once from pmu->is_uncore at parse time, to skip the intersection for uncore PMUs. Core PMUs, and other non-core PMUs such as software events, breakpoints, or tracepoints, continue to be restricted to their PMU CPU map. Fixes: 811082e4b6 ("perf parse-events: Support user CPUs mixed with threads/processes") Reviewed-by: Ian Rogers <irogers@google.com> Assisted-by: Claude:claude-sonnet-5 Signed-off-by: Nia Su <nia.su@sifive.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2026-09-25 15:29:56 +02:00
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internal	perf evlist: Don't restrict uncore events to PMU CPUs	2026-09-25 15:29:56 +02:00
perf	libperf: Document struct perf_cpu int16_t ABI limitation	2026-06-06 14:46:37 -03:00