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authorMikael Starvik <mikael.starvik@axis.com>2005-07-27 11:44:42 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-27 16:26:01 -0700
commit8d20a541b089ecb67a88a673548161b686ed7b85 (patch)
tree53bac804d538068c80684becb76cd76937956502 /include/asm-cris/semaphore.h
parent21783c9746619a782c21be606f6498bbd4d4615e (diff)
[PATCH] CRIS update: SMP
Patches to support SMP. * Each CPU has its own current_pgd. * flush_tlb_range is implemented as flush_tlb_mm. * Atomic operations implemented with spinlocks. * Semaphores implemented with spinlocks. Signed-off-by: Mikael Starvik <starvik@axis.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-cris/semaphore.h')
-rw-r--r--include/asm-cris/semaphore.h21
1 files changed, 9 insertions, 12 deletions
diff --git a/include/asm-cris/semaphore.h b/include/asm-cris/semaphore.h
index 605aa7eaaaf..8ed7636ab31 100644
--- a/include/asm-cris/semaphore.h
+++ b/include/asm-cris/semaphore.h
@@ -72,10 +72,9 @@ extern inline void down(struct semaphore * sem)
might_sleep();
/* atomically decrement the semaphores count, and if its negative, we wait */
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(sem, flags);
failed = --(sem->count.counter) < 0;
- local_irq_restore(flags);
+ cris_atomic_restore(sem, flags);
if(failed) {
__down(sem);
}
@@ -95,10 +94,9 @@ extern inline int down_interruptible(struct semaphore * sem)
might_sleep();
/* atomically decrement the semaphores count, and if its negative, we wait */
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(sem, flags);
failed = --(sem->count.counter) < 0;
- local_irq_restore(flags);
+ cris_atomic_restore(sem, flags);
if(failed)
failed = __down_interruptible(sem);
return(failed);
@@ -109,13 +107,13 @@ extern inline int down_trylock(struct semaphore * sem)
unsigned long flags;
int failed;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(sem, flags);
failed = --(sem->count.counter) < 0;
- local_irq_restore(flags);
+ cris_atomic_restore(sem, flags);
if(failed)
failed = __down_trylock(sem);
return(failed);
+
}
/*
@@ -130,10 +128,9 @@ extern inline void up(struct semaphore * sem)
int wakeup;
/* atomically increment the semaphores count, and if it was negative, we wake people */
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(sem, flags);
wakeup = ++(sem->count.counter) <= 0;
- local_irq_restore(flags);
+ cris_atomic_restore(sem, flags);
if(wakeup) {
__up(sem);
}