arch,mn10300: Convert smp_mb__*()

mn10300 fully relies on asm-generic/barrier.h and therefore its
smp_mb() is barrier(). We can use the default implementation.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/n/tip-wotyeoj99h1dpojjeest2jbk@git.kernel.org
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-am33-list@redhat.com
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/mn10300/include/asm/atomic.h b/arch/mn10300/include/asm/atomic.h
index 975e184..cadeb1e 100644 (file)
--- a/arch/mn10300/include/asm/atomic.h
+++ b/arch/mn10300/include/asm/atomic.h
@@ -13,6 +13,7 @@
 
 #include <asm/irqflags.h>
 #include <asm/cmpxchg.h>
+#include <asm/barrier.h>
 
 #ifndef CONFIG_SMP
 #include <asm-generic/atomic.h>
@@ -234,12 +235,6 @@ static inline void atomic_set_mask(unsigned long mask, unsigned long *addr)
 #endif
 }
 
-/* Atomic operations are already serializing on MN10300??? */
-#define smp_mb__before_atomic_dec()    barrier()
-#define smp_mb__after_atomic_dec()     barrier()
-#define smp_mb__before_atomic_inc()    barrier()
-#define smp_mb__after_atomic_inc()     barrier()
-
 #endif /* __KERNEL__ */
 #endif /* CONFIG_SMP */
 #endif /* _ASM_ATOMIC_H */

diff --git a/arch/mn10300/include/asm/bitops.h b/arch/mn10300/include/asm/bitops.h
index 596bb27..fe6f8e2 100644 (file)
--- a/arch/mn10300/include/asm/bitops.h
+++ b/arch/mn10300/include/asm/bitops.h
@@ -18,9 +18,7 @@
 #define __ASM_BITOPS_H
 
 #include <asm/cpu-regs.h>
-
-#define smp_mb__before_clear_bit()     barrier()
-#define smp_mb__after_clear_bit()      barrier()
+#include <asm/barrier.h>
 
 /*
  * set bit

diff --git a/arch/mn10300/mm/tlb-smp.c b/arch/mn10300/mm/tlb-smp.c
index 3e57faf..e5d0ef7 100644 (file)
--- a/arch/mn10300/mm/tlb-smp.c
+++ b/arch/mn10300/mm/tlb-smp.c
@@ -78,9 +78,9 @@ void smp_flush_tlb(void *unused)
        else
                local_flush_tlb_page(flush_mm, flush_va);
 
-       smp_mb__before_clear_bit();
+       smp_mb__before_atomic();
        cpumask_clear_cpu(cpu_id, &flush_cpumask);
-       smp_mb__after_clear_bit();
+       smp_mb__after_atomic();
 out:
        put_cpu();
 }