rockchip-kernel

Files

Peter Zijlstra 7c823e4c30 perf/core: Fix pmus_lock vs. pmus_srcu ordering

[ Upstream commit 2565e42539b120b81a68a58da961ce5d1e34eac8 ]

Commit a63fbed776 ("perf/tracing/cpuhotplug: Fix locking order")
placed pmus_lock inside pmus_srcu, this makes perf_pmu_unregister()
trip lockdep.

Move the locking about such that only pmu_idr and pmus (list) are
modified while holding pmus_lock. This avoids doing synchronize_srcu()
while holding pmus_lock and all is well again.

Fixes: a63fbed776 ("perf/tracing/cpuhotplug: Fix locking order")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20241104135517.679556858@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-03-13 12:58:29 +01:00

callchain.c

uaccess: remove CONFIG_SET_FS

2022-02-25 09:36:06 +01:00

core.c

perf/core: Fix pmus_lock vs. pmus_srcu ordering

2025-03-13 12:58:29 +01:00

hw_breakpoint_test.c

perf/hw_breakpoint: remove MODULE_LICENSE in non-modules

2023-04-13 13:13:52 -07:00

hw_breakpoint.c

perf/hw_breakpoint: Remove arch breakpoint hooks