Peter Zijlstra 2ab9d83026 perf/aux: Fix AUX buffer serialization ...

Ole reported that event->mmap_mutex is strictly insufficient to
serialize the AUX buffer, add a per RB mutex to fully serialize it.

Note that in the lock order comment the perf_event::mmap_mutex order
was already wrong, that is, it nesting under mmap_lock is not new with
this patch.

Fixes: 45bfb2e504 ("perf: Add AUX area to ring buffer for raw data streams")
Reported-by: Ole <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>

2024-09-04 18:22:56 +02:00

..

callchain.c

sysctl: treewide: constify the ctl_table argument of proc_handlers

2024-07-24 20:59:29 +02:00

core.c

perf/aux: Fix AUX buffer serialization

2024-09-04 18:22:56 +02:00

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

2023-08-16 23:54:50 +10:00

internal.h

perf/aux: Fix AUX buffer serialization

2024-09-04 18:22:56 +02:00

Makefile

…

ring_buffer.c

perf/aux: Fix AUX buffer serialization

2024-09-04 18:22:56 +02:00

uprobes.c

uprobes: Use kzalloc to allocate xol area

2024-09-03 16:54:02 +02:00