void static_key_slow_inc_cpuslocked(struct static_key *key)
{
- int v, v1;
-
STATIC_KEY_CHECK_USE(key);
lockdep_assert_cpus_held();
* so it counts as "enabled" in jump_label_update(). Note that
* atomic_inc_unless_negative() checks >= 0, so roll our own.
*/
- for (v = atomic_read(&key->enabled); v > 0; v = v1) {
- v1 = atomic_cmpxchg(&key->enabled, v, v + 1);
- if (likely(v1 == v))
+ for (int v = atomic_read(&key->enabled); v > 0; )
+ if (likely(atomic_try_cmpxchg(&key->enabled, &v, v + 1)))
return;
- }
jump_label_lock();
if (atomic_read(&key->enabled) == 0) {