perf/core: Detach 'struct perf_cpu_pmu_context' and 'struct pmu' lifetimes

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In prepration for being able to unregister a PMU with existing events,
it becomes important to detach struct perf_cpu_pmu_context lifetimes
from that of struct pmu.

Notably struct perf_cpu_pmu_context embeds a struct perf_event_pmu_context
that can stay referenced until the last event goes.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Ravi Bangoria <ravi.bangoria@amd.com>
Link: https://lore.kernel.org/r/20241104135518.760214287@infradead.org

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Peter Zijlstra 2024-11-04 14:39:20 +01:00 • committed by Ingo Molnar

parent 0983593f32

commit 4eabf533fb

2 changed files with 49 additions and 11 deletions

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4

include/linux/perf_event.h

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56

kernel/events/core.c

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