diff options
| author |   José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
|---|---|---|
| committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
| commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
| tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/x86/include/asm/atomic64_64.h | |
| parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) | |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/x86/include/asm/atomic64_64.h')
| -rw-r--r-- | kernel/arch/x86/include/asm/atomic64_64.h | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/kernel/arch/x86/include/asm/atomic64_64.h b/kernel/arch/x86/include/asm/atomic64_64.h index f8d273e18..037351022 100644 --- a/kernel/arch/x86/include/asm/atomic64_64.h +++ b/kernel/arch/x86/include/asm/atomic64_64.h @@ -18,7 +18,7 @@ */ static inline long atomic64_read(const atomic64_t *v) { - return ACCESS_ONCE((v)->counter); + return READ_ONCE((v)->counter); } /** @@ -30,7 +30,7 @@ static inline long atomic64_read(const atomic64_t *v) */ static inline void atomic64_set(atomic64_t *v, long i) { - v->counter = i; + WRITE_ONCE(v->counter, i); } /** @@ -40,7 +40,7 @@ static inline void atomic64_set(atomic64_t *v, long i) * * Atomically adds @i to @v. */ -static inline void atomic64_add(long i, atomic64_t *v) +static __always_inline void atomic64_add(long i, atomic64_t *v) { asm volatile(LOCK_PREFIX "addq %1,%0" : "=m" (v->counter) @@ -81,7 +81,7 @@ static inline int atomic64_sub_and_test(long i, atomic64_t *v) * * Atomically increments @v by 1. */ -static inline void atomic64_inc(atomic64_t *v) +static __always_inline void atomic64_inc(atomic64_t *v) { asm volatile(LOCK_PREFIX "incq %0" : "=m" (v->counter) @@ -94,7 +94,7 @@ static inline void atomic64_inc(atomic64_t *v) * * Atomically decrements @v by 1. */ -static inline void atomic64_dec(atomic64_t *v) +static __always_inline void atomic64_dec(atomic64_t *v) { asm volatile(LOCK_PREFIX "decq %0" : "=m" (v->counter) @@ -148,7 +148,7 @@ static inline int atomic64_add_negative(long i, atomic64_t *v) * * Atomically adds @i to @v and returns @i + @v */ -static inline long atomic64_add_return(long i, atomic64_t *v) +static __always_inline long atomic64_add_return(long i, atomic64_t *v) { return i + xadd(&v->counter, i); } @@ -220,4 +220,19 @@ static inline long atomic64_dec_if_positive(atomic64_t *v) return dec; } +#define ATOMIC64_OP(op) \ +static inline void atomic64_##op(long i, atomic64_t *v) \ +{ \ + asm volatile(LOCK_PREFIX #op"q %1,%0" \ + : "+m" (v->counter) \ + : "er" (i) \ + : "memory"); \ +} + +ATOMIC64_OP(and) +ATOMIC64_OP(or) +ATOMIC64_OP(xor) + +#undef ATOMIC64_OP + #endif /* _ASM_X86_ATOMIC64_64_H */ |