summaryrefslogtreecommitdiffstats
path: root/include/asm-cris/atomic.h
diff options
context:
space:
mode:
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/atomic.h
parent21783c9746619a782c21be606f6498bbd4d4615e (diff)
downloadop-kernel-dev-8d20a541b089ecb67a88a673548161b686ed7b85.zip
op-kernel-dev-8d20a541b089ecb67a88a673548161b686ed7b85.tar.gz
[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/atomic.h')
-rw-r--r--include/asm-cris/atomic.h66
1 files changed, 24 insertions, 42 deletions
diff --git a/include/asm-cris/atomic.h b/include/asm-cris/atomic.h
index b3dfea5..70605b0 100644
--- a/include/asm-cris/atomic.h
+++ b/include/asm-cris/atomic.h
@@ -4,21 +4,14 @@
#define __ASM_CRIS_ATOMIC__
#include <asm/system.h>
+#include <asm/arch/atomic.h>
/*
* Atomic operations that C can't guarantee us. Useful for
* resource counting etc..
*/
-/*
- * Make sure gcc doesn't try to be clever and move things around
- * on us. We need to use _exactly_ the address the user gave us,
- * not some alias that contains the same information.
- */
-
-#define __atomic_fool_gcc(x) (*(struct { int a[100]; } *)x)
-
-typedef struct { int counter; } atomic_t;
+typedef struct { volatile int counter; } atomic_t;
#define ATOMIC_INIT(i) { (i) }
@@ -30,29 +23,26 @@ typedef struct { int counter; } atomic_t;
extern __inline__ void atomic_add(int i, volatile atomic_t *v)
{
unsigned long flags;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(v, flags);
v->counter += i;
- local_irq_restore(flags);
+ cris_atomic_restore(v, flags);
}
extern __inline__ void atomic_sub(int i, volatile atomic_t *v)
{
unsigned long flags;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(v, flags);
v->counter -= i;
- local_irq_restore(flags);
+ cris_atomic_restore(v, flags);
}
extern __inline__ int atomic_add_return(int i, volatile atomic_t *v)
{
unsigned long flags;
int retval;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(v, flags);
retval = (v->counter += i);
- local_irq_restore(flags);
+ cris_atomic_restore(v, flags);
return retval;
}
@@ -62,10 +52,9 @@ extern __inline__ int atomic_sub_return(int i, volatile atomic_t *v)
{
unsigned long flags;
int retval;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(v, flags);
retval = (v->counter -= i);
- local_irq_restore(flags);
+ cris_atomic_restore(v, flags);
return retval;
}
@@ -73,39 +62,35 @@ extern __inline__ int atomic_sub_and_test(int i, volatile atomic_t *v)
{
int retval;
unsigned long flags;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(v, flags);
retval = (v->counter -= i) == 0;
- local_irq_restore(flags);
+ cris_atomic_restore(v, flags);
return retval;
}
extern __inline__ void atomic_inc(volatile atomic_t *v)
{
unsigned long flags;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(v, flags);
(v->counter)++;
- local_irq_restore(flags);
+ cris_atomic_restore(v, flags);
}
extern __inline__ void atomic_dec(volatile atomic_t *v)
{
unsigned long flags;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(v, flags);
(v->counter)--;
- local_irq_restore(flags);
+ cris_atomic_restore(v, flags);
}
extern __inline__ int atomic_inc_return(volatile atomic_t *v)
{
unsigned long flags;
int retval;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(v, flags);
retval = (v->counter)++;
- local_irq_restore(flags);
+ cris_atomic_restore(v, flags);
return retval;
}
@@ -113,20 +98,18 @@ extern __inline__ int atomic_dec_return(volatile atomic_t *v)
{
unsigned long flags;
int retval;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(v, flags);
retval = (v->counter)--;
- local_irq_restore(flags);
+ cris_atomic_restore(v, flags);
return retval;
}
extern __inline__ int atomic_dec_and_test(volatile atomic_t *v)
{
int retval;
unsigned long flags;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(v, flags);
retval = --(v->counter) == 0;
- local_irq_restore(flags);
+ cris_atomic_restore(v, flags);
return retval;
}
@@ -134,10 +117,9 @@ extern __inline__ int atomic_inc_and_test(volatile atomic_t *v)
{
int retval;
unsigned long flags;
- local_save_flags(flags);
- local_irq_disable();
+ cris_atomic_save(v, flags);
retval = ++(v->counter) == 0;
- local_irq_restore(flags);
+ cris_atomic_restore(v, flags);
return retval;
}
OpenPOWER on IntegriCloud