diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2025-08-12 12:39:13 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-08-15 13:13:02 +0200 |
| commit | 448f97fba9013ffa13f5dd82febd18836b189499 (patch) | |
| tree | fe2f9b37645706f55f715a7d78cde7d5d2f6aca4 /include/linux/perf_event.h | |
| parent | 59741451b49ce9964a9758c19d6f7df2a1255c75 (diff) | |
perf: Convert mmap() refcounts to refcount_t
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
Diffstat (limited to 'include/linux/perf_event.h')
| -rw-r--r-- | include/linux/perf_event.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index ec9d96025683..bfbf9ea53f25 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -859,7 +859,7 @@ struct perf_event { /* mmap bits */ struct mutex mmap_mutex; - atomic_t mmap_count; + refcount_t mmap_count; struct perf_buffer *rb; struct list_head rb_entry; |