From: Matthias Kruk <m@m10k.eu>
Date: Sat, 8 Feb 2020 15:40:35 +0000 (+0900)
Subject: klibc/mutex: Reduce the amount of code executed in mutex_trylock() while the spinlock... 
X-Git-Url: https://git.corax.cc/?a=commitdiff_plain;h=5e0743c59fd50780cc28e97fb3ffd18855d0ac62;p=corax

klibc/mutex: Reduce the amount of code executed in mutex_trylock() while the spinlock is held
---

diff --git a/kernel/klibc/mutex.c b/kernel/klibc/mutex.c
index 7e69b07..b6fd5d0 100644
--- a/kernel/klibc/mutex.c
+++ b/kernel/klibc/mutex.c
@@ -105,14 +105,13 @@ int mutex_trylock(mutex_t *mutex)
 	task_t *ctask;
 
 	ctask = task_get_current();
+	ret_val = -EAGAIN;
 
 	spinlock_lock(&(mutex->mx_lock));
 
 	if(!mutex->mx_owner) {
 		mutex->mx_owner = ctask;
 		ret_val = 0;
-	} else {
-		ret_val = -EAGAIN;
 	}
 
 	spinlock_unlock(&(mutex->mx_lock));