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| author | Uros Bizjak <ubizjak@gmail.com> | 2024-10-10 09:10:04 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-10-17 22:02:27 +0200 |
| commit | 19298f48694987fac843261c84e24834c255b451 (patch) | |
| tree | 70ef0c4279e9687a6b3fd4e45f39d7ee08df99cb /kernel | |
| parent | locking/ww_mutex: Adjust to lockdep nest_lock requirements (diff) | |
| download | linux-19298f48694987fac843261c84e24834c255b451.tar.gz linux-19298f48694987fac843261c84e24834c255b451.zip | |
futex: Use atomic64_inc_return() in get_inode_sequence_number()
Use atomic64_inc_return(&ref) instead of atomic64_add_return(1, &ref)
to use optimized implementation and ease register pressure around
the primitive for targets that implement optimized variant.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: André Almeida <andrealmeid@igalia.com>
Link: https://lore.kernel.org/all/20241010071023.21913-1-ubizjak@gmail.com
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/futex/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/futex/core.c b/kernel/futex/core.c index 136768ae2637..3146730e55f7 100644 --- a/kernel/futex/core.c +++ b/kernel/futex/core.c @@ -181,7 +181,7 @@ static u64 get_inode_sequence_number(struct inode *inode) return old; for (;;) { - u64 new = atomic64_add_return(1, &i_seq); + u64 new = atomic64_inc_return(&i_seq); if (WARN_ON_ONCE(!new)) continue; |