diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2024-11-04 14:39:20 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-03-04 09:43:22 +0100 |
| commit | 4eabf533fb1886089ef57e0c8ec52048b1741e39 (patch) | |
| tree | 540fd31502910c709137853a7bc6b38b5cc3c16d /include/linux/perf_event.h | |
| parent | 0983593f32c4c94239e01e42e4a17664b64a3c63 (diff) | |
perf/core: Detach 'struct perf_cpu_pmu_context' and 'struct pmu' lifetimes
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
Diffstat (limited to 'include/linux/perf_event.h')
| -rw-r--r-- | include/linux/perf_event.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 5f293e679ab6..76f4265efee9 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -343,7 +343,7 @@ struct pmu { */ unsigned int scope; - struct perf_cpu_pmu_context __percpu *cpu_pmu_context; + struct perf_cpu_pmu_context __percpu **cpu_pmu_context; atomic_t exclusive_cnt; /* < 0: cpu; > 0: tsk */ int task_ctx_nr; int hrtimer_interval_ms; @@ -922,7 +922,7 @@ struct perf_event_pmu_context { struct list_head pinned_active; struct list_head flexible_active; - /* Used to avoid freeing per-cpu perf_event_pmu_context */ + /* Used to identify the per-cpu perf_event_pmu_context */ unsigned int embedded : 1; unsigned int nr_events; |