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It was unnecessarily disabling and enabling PMUs for each event. It
should be done at PMU level. Add pmu_ctx->nr_freq counter to check it
at each PMU. As PMU context has separate active lists for pinned group
and flexible group, factor out a new function to do the job.
Another minor optimization is that it can skip PMUs w/ CAP_NO_INTERRUPT
even if it needs to unthrottle sampling events.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Mingwei Zhang <mizhang@google.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Link: https://lore.kernel.org/r/20240207050545.2727923-1-namhyung@kernel.org
0259bf63f7