From: Steven Rostedt <srostedt@redhat.com>
Try to take the lock again as soon as we go into the
rt_spin_lock_slowlock() code before doing the setup and wait loop.
This makes the code closer to what the rt_mutex_slowlock() does,
which will help in simplifying this code in later commits.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
kernel/rtmutex.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/kernel/rtmutex.c b/kernel/rtmutex.c
index f0ce334..318d7ed 100644
--- a/kernel/rtmutex.c
+++ b/kernel/rtmutex.c
@@ -829,6 +829,11 @@ rt_spin_lock_slowlock(struct rt_mutex *lock)
raw_spin_lock_irqsave(&lock->wait_lock, flags);
init_lists(lock);
+ if (do_try_to_take_rt_mutex(lock, STEAL_LATERAL)) {
+ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+ return;
+ }
+
BUG_ON(rt_mutex_owner(lock) == current);
/*
--
1.7.2.3
--
