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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-06 11:36:10 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-06 11:36:10 +0300 |
commit | a769f30c7bd7cf917eea05a2b448f3588a87d767 (patch) | |
tree | 10a06089a9525926e23675528dd8190d05849143 /arch/frv/include/asm/atomic.h | |
parent | 307a082484eb0201ad123f39f95510a9da11985b (diff) | |
parent | d5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c (diff) | |
download | linux-a769f30c7bd7cf917eea05a2b448f3588a87d767.tar.xz |
Merge 4.10-rc7 into staging-next
This resolves the merge errors that were reported in linux-next and it
picks up the staging and IIO fixes that we need/want in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/frv/include/asm/atomic.h')
-rw-r--r-- | arch/frv/include/asm/atomic.h | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/arch/frv/include/asm/atomic.h b/arch/frv/include/asm/atomic.h index 1c2a5e264fc7..e93c9494503a 100644 --- a/arch/frv/include/asm/atomic.h +++ b/arch/frv/include/asm/atomic.h @@ -139,7 +139,7 @@ static inline void atomic64_dec(atomic64_t *v) #define atomic64_sub_and_test(i,v) (atomic64_sub_return((i), (v)) == 0) #define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0) #define atomic64_inc_and_test(v) (atomic64_inc_return((v)) == 0) - +#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) #define atomic_cmpxchg(v, old, new) (cmpxchg(&(v)->counter, old, new)) #define atomic_xchg(v, new) (xchg(&(v)->counter, new)) @@ -161,6 +161,39 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u) return c; } +static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u) +{ + long long c, old; + + c = atomic64_read(v); + for (;;) { + if (unlikely(c == u)) + break; + old = atomic64_cmpxchg(v, c, c + i); + if (likely(old == c)) + break; + c = old; + } + return c != u; +} + +static inline long long atomic64_dec_if_positive(atomic64_t *v) +{ + long long c, old, dec; + + c = atomic64_read(v); + for (;;) { + dec = c - 1; + if (unlikely(dec < 0)) + break; + old = atomic64_cmpxchg((v), c, dec); + if (likely(old == c)) + break; + c = old; + } + return dec; +} + #define ATOMIC_OP(op) \ static inline int atomic_fetch_##op(int i, atomic_t *v) \ { \ |