diff options
| author | Nicholas Mc Guire <der.herr@hofr.at> | 2013-11-22 03:52:30 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2015-02-13 22:20:44 (GMT) |
| commit | 6536b6b6ed300c7a36d761b37988d7a4314bde36 (patch) | |
| tree | 22363fefa5e68dda28c3271ddd63a99271fadaa6 /kernel | |
| parent | ad253470c91685c5d5b08cde47b6f1357ad56342 (diff) | |
| download | linux-fsl-qoriq-6536b6b6ed300c7a36d761b37988d7a4314bde36.tar.xz | |
condition migration_disable on lock acquisition
No need to unconditionally migrate_disable (what is it protecting ?) and
re-enable on failure to acquire the lock.
This patch moves the migrate_disable to be conditioned on sucessful lock
acquisition only.
Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/rt.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/kernel/rt.c b/kernel/rt.c index 92a16e1..ff56d3c 100644 --- a/kernel/rt.c +++ b/kernel/rt.c @@ -182,11 +182,10 @@ int __lockfunc rt_write_trylock(rwlock_t *rwlock) { int ret = rt_mutex_trylock(&rwlock->lock); - migrate_disable(); - if (ret) + if (ret) { rwlock_acquire(&rwlock->dep_map, 0, 1, _RET_IP_); - else - migrate_enable(); + migrate_disable(); + } return ret; } |