From 9424cdf0fc7f768f20daef77980da9617a76679b Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 13 Mar 2014 19:00:36 +0100 Subject: [PATCH] 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 Acked-by: Paul E. McKenney Link: http://lkml.kernel.org/n/tip-wotyeoj99h1dpojjeest2jbk@git.kernel.org Cc: David Howells Cc: Koichi Yasutake Cc: Linus Torvalds Cc: linux-am33-list@redhat.com Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar --- arch/mn10300/include/asm/atomic.h | 7 +------ arch/mn10300/include/asm/bitops.h | 4 +--- arch/mn10300/mm/tlb-smp.c | 4 ++-- 3 files changed, 4 insertions(+), 11 deletions(-) diff --git a/arch/mn10300/include/asm/atomic.h b/arch/mn10300/include/asm/atomic.h index 975e1841ca64..cadeb1e2cdfc 100644 --- a/arch/mn10300/include/asm/atomic.h +++ b/arch/mn10300/include/asm/atomic.h @@ -13,6 +13,7 @@ #include #include +#include #ifndef CONFIG_SMP #include @@ -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 596bb2706d81..fe6f8e2c3617 100644 --- a/arch/mn10300/include/asm/bitops.h +++ b/arch/mn10300/include/asm/bitops.h @@ -18,9 +18,7 @@ #define __ASM_BITOPS_H #include - -#define smp_mb__before_clear_bit() barrier() -#define smp_mb__after_clear_bit() barrier() +#include /* * set bit diff --git a/arch/mn10300/mm/tlb-smp.c b/arch/mn10300/mm/tlb-smp.c index 3e57faf04083..e5d0ef722bfa 100644 --- 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(); } -- 2.20.1