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| author | Robert Richter <robert.richter@amd.com> | 2010-06-04 11:33:10 +0200 |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2010-06-04 11:33:10 +0200 |
| commit | d8a382d2662822248a97ce9d670b90e68aefbd3a (patch) | |
| tree | 4f5bbd5d0a5881ed42de611402ea4ac2c6d6ff48 /kernel/mutex.c | |
| parent | 45c34e05c4e3d36e7c44e790241ea11a1d90d54e (diff) | |
| parent | c6df8d5ab87a246942d138321e1721edbb69f6e1 (diff) | |
Merge remote branch 'tip/perf/urgent' into oprofile/urgent
Diffstat (limited to 'kernel/mutex.c')
| -rw-r--r-- | kernel/mutex.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/mutex.c b/kernel/mutex.c index 632f04c57d82..4c0b7b3e6d2e 100644 --- a/kernel/mutex.c +++ b/kernel/mutex.c @@ -172,6 +172,13 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass, struct thread_info *owner; /* + * If we own the BKL, then don't spin. The owner of + * the mutex might be waiting on us to release the BKL. + */ + if (unlikely(current->lock_depth >= 0)) + break; + + /* * If there's an owner, wait for it to either * release the lock or go to sleep. */ |