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| author | Thomas Gleixner <tglx@linutronix.de> | 2009-07-24 20:48:53 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2009-07-27 21:07:15 +0200 |
| commit | 34ca9f9b51cddfcea87ba7aef37e59b55c95f444 (patch) | |
| tree | 3b83f8668db962f2c0b7577c71a89565ffb6c609 /lib/kernel_lock.c | |
| parent | f7c0160ac66e32cbf383e3443657e03e046353f0 (diff) | |
| download | lwn-34ca9f9b51cddfcea87ba7aef37e59b55c95f444.tar.gz lwn-34ca9f9b51cddfcea87ba7aef37e59b55c95f444.zip | |
spinlocks: Create atomic_spinlock and convert rq->lock
atomic_spinlock_t will be used to annotate locks which are not
converted to sleeping spinlocks on preempt-rt.
rq->lock must be converted right away as rq->lock is handled by a few
raw lock operations.
Fix also the plist implementation so debugging can handle both
spinlocks and atomic_spinlocks.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'lib/kernel_lock.c')
| -rw-r--r-- | lib/kernel_lock.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/kernel_lock.c b/lib/kernel_lock.c index 39f1029e3525..67b7217d14a0 100644 --- a/lib/kernel_lock.c +++ b/lib/kernel_lock.c @@ -20,7 +20,7 @@ * * Don't use in new code. */ -static __cacheline_aligned_in_smp DEFINE_SPINLOCK(kernel_flag); +static __cacheline_aligned_in_smp DEFINE_ATOMIC_SPINLOCK(kernel_flag); /* @@ -79,7 +79,7 @@ static inline void __lock_kernel(void) */ do { preempt_enable(); - while (spin_is_locked(&kernel_flag)) + while (atomic_spin_is_locked(&kernel_flag)) cpu_relax(); preempt_disable(); } while (!_raw_spin_trylock(&kernel_flag)); |