perf: Convert mmap() refcounts to refcount_t

Browse source

The recently fixed reference count leaks could have been detected by using
refcount_t and refcount_t would have mitigated the potential overflow at
least.

Now that the code is properly structured, convert the mmap() related
mmap_count variants over to refcount_t.

No functional change intended.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Link: https://lore.kernel.org/r/20250812104020.071507932@infradead.org

...

This commit is contained in:

Thomas Gleixner 2025-08-12 12:39:13 +02:00 • committed by Peter Zijlstra

parent 59741451b4

commit 448f97fba9

4 changed files with 24 additions and 24 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

include/linux/perf_event.h

View file

40

kernel/events/core.c

View file

4

kernel/events/internal.h

View file

2

kernel/events/ring_buffer.c

View file