Decorate the printk path with an "unlikely()"
Signed-off-by: Gregory Haskins <ghaskins@xxxxxxxxxx>
---
kernel/rtmutex.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/kernel/rtmutex.c b/kernel/rtmutex.c
index 122f143..ebdaa17 100644
--- a/kernel/rtmutex.c
+++ b/kernel/rtmutex.c
@@ -660,12 +660,12 @@ rt_spin_lock_fastlock(struct rt_mutex *lock,
void fastcall (*slowfn)(struct rt_mutex *lock))
{
/* Temporary HACK! */
- if (!current->in_printk)
- might_sleep();
- else if (in_atomic() || irqs_disabled())
+ if (unlikely(current->in_printk) && (in_atomic() || irqs_disabled()))
/* don't grab locks for printk in atomic */
return;
+ might_sleep();
+
if (likely(rt_mutex_cmpxchg(lock, NULL, current)))
rt_mutex_deadlock_account_lock(lock, current);
else
@@ -677,7 +677,7 @@ rt_spin_lock_fastunlock(struct rt_mutex *lock,
void fastcall (*slowfn)(struct rt_mutex *lock))
{
/* Temporary HACK! */
- if (current->in_printk && (in_atomic() || irqs_disabled()))
+ if (unlikely(current->in_printk) && (in_atomic() || irqs_disabled()))
/* don't grab locks for printk in atomic */
return;
-
To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
