From: Will Deacon <will.deacon@arm.com> To: linux-arm-kernel@lists.infradead.org, peterz@infradead.org Cc: linux-kernel@vger.kernel.org, Will Deacon <will.deacon@arm.com>, Davidlohr Bueso <dbueso@suse.de>, Thomas Gleixner <tglx@linutronix.de> Subject: [PATCH -tip] ARM: atomics: implement _relaxed variants of atomic[64]_{inc,dec} Date: Wed, 7 Oct 2015 15:10:38 +0100 [thread overview] Message-ID: <1444227038-12533-1-git-send-email-will.deacon@arm.com> (raw) Now that the core code supports acquire/release/relaxed versions of the atomic_inc family, implement only the _relaxed flavours in the ARM backend so that we get all of the others for free. Cc: Davidlohr Bueso <dbueso@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Will Deacon <will.deacon@arm.com> --- This sits on top of tip/locking/core and it would be great to have it queued there. arch/arm/include/asm/atomic.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h index 2bf80afb7841..9e10c4567eb4 100644 --- a/arch/arm/include/asm/atomic.h +++ b/arch/arm/include/asm/atomic.h @@ -210,8 +210,8 @@ ATOMIC_OP(xor, ^=, eor) #define atomic_inc_and_test(v) (atomic_add_return(1, v) == 0) #define atomic_dec_and_test(v) (atomic_sub_return(1, v) == 0) -#define atomic_inc_return(v) (atomic_add_return(1, v)) -#define atomic_dec_return(v) (atomic_sub_return(1, v)) +#define atomic_inc_return_relaxed(v) (atomic_add_return_relaxed(1, v)) +#define atomic_dec_return_relaxed(v) (atomic_sub_return_relaxed(1, v)) #define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0) #define atomic_add_negative(i,v) (atomic_add_return(i, v) < 0) @@ -442,11 +442,11 @@ static inline int atomic64_add_unless(atomic64_t *v, long long a, long long u) #define atomic64_add_negative(a, v) (atomic64_add_return((a), (v)) < 0) #define atomic64_inc(v) atomic64_add(1LL, (v)) -#define atomic64_inc_return(v) atomic64_add_return(1LL, (v)) +#define atomic64_inc_return_relaxed(v) atomic64_add_return_relaxed(1LL, (v)) #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) #define atomic64_sub_and_test(a, v) (atomic64_sub_return((a), (v)) == 0) #define atomic64_dec(v) atomic64_sub(1LL, (v)) -#define atomic64_dec_return(v) atomic64_sub_return(1LL, (v)) +#define atomic64_dec_return_relaxed(v) atomic64_sub_return_relaxed(1LL, (v)) #define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0) #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL) -- 2.1.4
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From: will.deacon@arm.com (Will Deacon) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH -tip] ARM: atomics: implement _relaxed variants of atomic[64]_{inc, dec} Date: Wed, 7 Oct 2015 15:10:38 +0100 [thread overview] Message-ID: <1444227038-12533-1-git-send-email-will.deacon@arm.com> (raw) Now that the core code supports acquire/release/relaxed versions of the atomic_inc family, implement only the _relaxed flavours in the ARM backend so that we get all of the others for free. Cc: Davidlohr Bueso <dbueso@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Will Deacon <will.deacon@arm.com> --- This sits on top of tip/locking/core and it would be great to have it queued there. arch/arm/include/asm/atomic.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h index 2bf80afb7841..9e10c4567eb4 100644 --- a/arch/arm/include/asm/atomic.h +++ b/arch/arm/include/asm/atomic.h @@ -210,8 +210,8 @@ ATOMIC_OP(xor, ^=, eor) #define atomic_inc_and_test(v) (atomic_add_return(1, v) == 0) #define atomic_dec_and_test(v) (atomic_sub_return(1, v) == 0) -#define atomic_inc_return(v) (atomic_add_return(1, v)) -#define atomic_dec_return(v) (atomic_sub_return(1, v)) +#define atomic_inc_return_relaxed(v) (atomic_add_return_relaxed(1, v)) +#define atomic_dec_return_relaxed(v) (atomic_sub_return_relaxed(1, v)) #define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0) #define atomic_add_negative(i,v) (atomic_add_return(i, v) < 0) @@ -442,11 +442,11 @@ static inline int atomic64_add_unless(atomic64_t *v, long long a, long long u) #define atomic64_add_negative(a, v) (atomic64_add_return((a), (v)) < 0) #define atomic64_inc(v) atomic64_add(1LL, (v)) -#define atomic64_inc_return(v) atomic64_add_return(1LL, (v)) +#define atomic64_inc_return_relaxed(v) atomic64_add_return_relaxed(1LL, (v)) #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) #define atomic64_sub_and_test(a, v) (atomic64_sub_return((a), (v)) == 0) #define atomic64_dec(v) atomic64_sub(1LL, (v)) -#define atomic64_dec_return(v) atomic64_sub_return(1LL, (v)) +#define atomic64_dec_return_relaxed(v) atomic64_sub_return_relaxed(1LL, (v)) #define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0) #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL) -- 2.1.4
next reply other threads:[~2015-10-07 14:11 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-10-07 14:10 Will Deacon [this message] 2015-10-07 14:10 ` [PATCH -tip] ARM: atomics: implement _relaxed variants of atomic[64]_{inc, dec} Will Deacon 2015-10-07 14:16 ` [PATCH -tip] ARM: atomics: implement _relaxed variants of atomic[64]_{inc,dec} Peter Zijlstra 2015-10-07 14:16 ` Peter Zijlstra 2015-10-07 14:36 ` Davidlohr Bueso 2015-10-07 14:36 ` Davidlohr Bueso 2015-10-20 9:32 ` [tip:locking/core] ARM, locking/atomics: Implement " tip-bot for Will Deacon
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