diff options
Diffstat (limited to 'sys/kern/kern_lock.c')
| -rw-r--r-- | sys/kern/kern_lock.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/sys/kern/kern_lock.c b/sys/kern/kern_lock.c index e3e946e..9681c87 100644 --- a/sys/kern/kern_lock.c +++ b/sys/kern/kern_lock.c @@ -792,8 +792,10 @@ __lockmgr_args(struct lock *lk, u_int flags, struct lock_object *ilk, break; } - while (!atomic_cmpset_acq_ptr(&lk->lk_lock, LK_UNLOCKED, - tid)) { + for (;;) { + if (lk->lk_lock == LK_UNLOCKED && + atomic_cmpset_acq_ptr(&lk->lk_lock, LK_UNLOCKED, tid)) + break; #ifdef HWPMC_HOOKS PMC_SOFT_CALL( , , lock, failed); #endif @@ -1129,7 +1131,11 @@ __lockmgr_args(struct lock *lk, u_int flags, struct lock_object *ilk, __func__, iwmesg, file, line); } - while (!atomic_cmpset_acq_ptr(&lk->lk_lock, LK_UNLOCKED, tid)) { + for (;;) { + if (lk->lk_lock == LK_UNLOCKED && + atomic_cmpset_acq_ptr(&lk->lk_lock, LK_UNLOCKED, tid)) + break; + #ifdef HWPMC_HOOKS PMC_SOFT_CALL( , , lock, failed); #endif |
