[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>
diff --git a/include/asm-cris/semaphore.h b/include/asm-cris/semaphore.h
index 605aa7e..8ed7636 100644
--- a/include/asm-cris/semaphore.h
+++ b/include/asm-cris/semaphore.h
@@ -72,10 +72,9 @@
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 @@
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 @@
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 @@
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);
}