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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-11-12 10:58:59 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-11-12 10:58:59 +0000 |
| commit | df762eccbadf87850fbee444d729e0f1b1e946f1 (patch) | |
| tree | 1bf47bbbd4ea91e343f983b3b50ec2ec73a739e1 /arch/arm/include/asm/atomic.h | |
| parent | ec1e20a02fe33b767ffcca8920a32211492416d7 (diff) | |
| parent | 70d42126877b9faa272d446a6de5917614c28dd9 (diff) | |
| download | linux-df762eccbadf87850fbee444d729e0f1b1e946f1.tar.bz2 | |
Merge branch 'devel-stable' into for-next
Conflicts:
arch/arm/include/asm/atomic.h
arch/arm/include/asm/hardirq.h
arch/arm/kernel/smp.c
Diffstat (limited to 'arch/arm/include/asm/atomic.h')
| -rw-r--r-- | arch/arm/include/asm/atomic.h | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h index f8a4336ed8fc..62d2cb53b069 100644 --- a/arch/arm/include/asm/atomic.h +++ b/arch/arm/include/asm/atomic.h @@ -12,6 +12,7 @@ #define __ASM_ARM_ATOMIC_H #include <linux/compiler.h> +#include <linux/prefetch.h> #include <linux/types.h> #include <linux/irqflags.h> #include <asm/barrier.h> @@ -41,6 +42,7 @@ static inline void atomic_add(int i, atomic_t *v) unsigned long tmp; int result; + prefetchw(&v->counter); __asm__ __volatile__("@ atomic_add\n" "1: ldrex %0, [%3]\n" " add %0, %0, %4\n" @@ -79,6 +81,7 @@ static inline void atomic_sub(int i, atomic_t *v) unsigned long tmp; int result; + prefetchw(&v->counter); __asm__ __volatile__("@ atomic_sub\n" "1: ldrex %0, [%3]\n" " sub %0, %0, %4\n" @@ -260,6 +263,7 @@ static inline void atomic64_set(atomic64_t *v, long long i) { long long tmp; + prefetchw(&v->counter); __asm__ __volatile__("@ atomic64_set\n" "1: ldrexd %0, %H0, [%2]\n" " strexd %0, %3, %H3, [%2]\n" @@ -276,10 +280,11 @@ static inline void atomic64_add(long long i, atomic64_t *v) long long result; unsigned long tmp; + prefetchw(&v->counter); __asm__ __volatile__("@ atomic64_add\n" "1: ldrexd %0, %H0, [%3]\n" -" adds %0, %0, %4\n" -" adc %H0, %H0, %H4\n" +" adds %Q0, %Q0, %Q4\n" +" adc %R0, %R0, %R4\n" " strexd %1, %0, %H0, [%3]\n" " teq %1, #0\n" " bne 1b" @@ -297,8 +302,8 @@ static inline long long atomic64_add_return(long long i, atomic64_t *v) __asm__ __volatile__("@ atomic64_add_return\n" "1: ldrexd %0, %H0, [%3]\n" -" adds %0, %0, %4\n" -" adc %H0, %H0, %H4\n" +" adds %Q0, %Q0, %Q4\n" +" adc %R0, %R0, %R4\n" " strexd %1, %0, %H0, [%3]\n" " teq %1, #0\n" " bne 1b" @@ -316,10 +321,11 @@ static inline void atomic64_sub(long long i, atomic64_t *v) long long result; unsigned long tmp; + prefetchw(&v->counter); __asm__ __volatile__("@ atomic64_sub\n" "1: ldrexd %0, %H0, [%3]\n" -" subs %0, %0, %4\n" -" sbc %H0, %H0, %H4\n" +" subs %Q0, %Q0, %Q4\n" +" sbc %R0, %R0, %R4\n" " strexd %1, %0, %H0, [%3]\n" " teq %1, #0\n" " bne 1b" @@ -337,8 +343,8 @@ static inline long long atomic64_sub_return(long long i, atomic64_t *v) __asm__ __volatile__("@ atomic64_sub_return\n" "1: ldrexd %0, %H0, [%3]\n" -" subs %0, %0, %4\n" -" sbc %H0, %H0, %H4\n" +" subs %Q0, %Q0, %Q4\n" +" sbc %R0, %R0, %R4\n" " strexd %1, %0, %H0, [%3]\n" " teq %1, #0\n" " bne 1b" @@ -406,9 +412,9 @@ static inline long long atomic64_dec_if_positive(atomic64_t *v) __asm__ __volatile__("@ atomic64_dec_if_positive\n" "1: ldrexd %0, %H0, [%3]\n" -" subs %0, %0, #1\n" -" sbc %H0, %H0, #0\n" -" teq %H0, #0\n" +" subs %Q0, %Q0, #1\n" +" sbc %R0, %R0, #0\n" +" teq %R0, #0\n" " bmi 2f\n" " strexd %1, %0, %H0, [%3]\n" " teq %1, #0\n" @@ -437,8 +443,8 @@ static inline int atomic64_add_unless(atomic64_t *v, long long a, long long u) " teqeq %H0, %H5\n" " moveq %1, #0\n" " beq 2f\n" -" adds %0, %0, %6\n" -" adc %H0, %H0, %H6\n" +" adds %Q0, %Q0, %Q6\n" +" adc %R0, %R0, %R6\n" " strexd %2, %0, %H0, [%4]\n" " teq %2, #0\n" " bne 1b\n" |