Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755868AbbGPPdR (ORCPT ); Thu, 16 Jul 2015 11:33:17 -0400 Received: from cam-admin0.cambridge.arm.com ([217.140.96.50]:39842 "EHLO cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752314AbbGPPdM (ORCPT ); Thu, 16 Jul 2015 11:33:12 -0400 From: Will Deacon To: linux-arch@vger.kernel.org Cc: Waiman.Long@hp.com, peterz@infradead.org, linux-kernel@vger.kernel.org, paulmck@linux.vnet.ibm.com, Will Deacon Subject: [PATCH v2 3/7] asm-generic: add relaxed/acquire/release variants for atomic_long_t Date: Thu, 16 Jul 2015 16:32:34 +0100 Message-Id: <1437060758-10381-4-git-send-email-will.deacon@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1437060758-10381-1-git-send-email-will.deacon@arm.com> References: <1437060758-10381-1-git-send-email-will.deacon@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4465 Lines: 130 This patch adds atomic_long_t wrappers for the new relaxed atomic operations. Signed-off-by: Will Deacon --- include/asm-generic/atomic-long.h | 86 +++++++++++++++++++++++++++------------ 1 file changed, 59 insertions(+), 27 deletions(-) diff --git a/include/asm-generic/atomic-long.h b/include/asm-generic/atomic-long.h index beaea541adfb..a94cbebbc33d 100644 --- a/include/asm-generic/atomic-long.h +++ b/include/asm-generic/atomic-long.h @@ -34,19 +34,69 @@ typedef atomic_t atomic_long_t; #endif -static inline long atomic_long_read(atomic_long_t *l) -{ - ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; - - return (long)ATOMIC_LONG_PFX(_read)(v); +#define ATOMIC_LONG_READ_OP(mo) \ +static inline long atomic_long_read##mo(atomic_long_t *l) \ +{ \ + ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \ + \ + return (long)ATOMIC_LONG_PFX(_read##mo)(v); \ } +ATOMIC_LONG_READ_OP() +ATOMIC_LONG_READ_OP(_acquire) -static inline void atomic_long_set(atomic_long_t *l, long i) -{ - ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; +#undef ATOMIC_LONG_READ_OP - ATOMIC_LONG_PFX(_set)(v, i); +#define ATOMIC_LONG_SET_OP(mo) \ +static inline void atomic_long_set##mo(atomic_long_t *l, long i) \ +{ \ + ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \ + \ + ATOMIC_LONG_PFX(_set##mo)(v, i); \ +} +ATOMIC_LONG_SET_OP() +ATOMIC_LONG_SET_OP(_release) + +#undef ATOMIC_LONG_SET_OP + +#define ATOMIC_LONG_ADD_SUB_OP(op, mo) \ +static inline long \ +atomic_long_##op##_return##mo(long i, atomic_long_t *l) \ +{ \ + ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \ + \ + return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(i, v); \ } +ATOMIC_LONG_ADD_SUB_OP(add,) +ATOMIC_LONG_ADD_SUB_OP(add, _relaxed) +ATOMIC_LONG_ADD_SUB_OP(add, _acquire) +ATOMIC_LONG_ADD_SUB_OP(add, _release) +ATOMIC_LONG_ADD_SUB_OP(sub,) +ATOMIC_LONG_ADD_SUB_OP(sub, _relaxed) +ATOMIC_LONG_ADD_SUB_OP(sub, _acquire) +ATOMIC_LONG_ADD_SUB_OP(sub, _release) + +#undef ATOMIC_LONG_ADD_SUB_OP + +#define atomic_long_cmpxchg_relaxed(l, old, new) \ + (ATOMIC_LONG_PFX(_cmpxchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(l), \ + (old), (new))) +#define atomic_long_cmpxchg_acquire(l, old, new) \ + (ATOMIC_LONG_PFX(_cmpxchg_acquire)((ATOMIC_LONG_PFX(_t) *)(l), \ + (old), (new))) +#define atomic_long_cmpxchg_release(l, old, new) \ + (ATOMIC_LONG_PFX(_cmpxchg_release)((ATOMIC_LONG_PFX(_t) *)(l), \ + (old), (new))) +#define atomic_long_cmpxchg(l, old, new) \ + (ATOMIC_LONG_PFX(_cmpxchg)((ATOMIC_LONG_PFX(_t) *)(l), (old), (new))) + +#define atomic_long_xchg_relaxed(v, new) \ + (ATOMIC_LONG_PFX(_xchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(v), (new))) +#define atomic_long_xchg_acquire(v, new) \ + (ATOMIC_LONG_PFX(_xchg_acquire)((ATOMIC_LONG_PFX(_t) *)(v), (new))) +#define atomic_long_xchg_release(v, new) \ + (ATOMIC_LONG_PFX(_xchg_release)((ATOMIC_LONG_PFX(_t) *)(v), (new))) +#define atomic_long_xchg(v, new) \ + (ATOMIC_LONG_PFX(_xchg)((ATOMIC_LONG_PFX(_t) *)(v), (new))) static inline void atomic_long_inc(atomic_long_t *l) { @@ -104,20 +154,6 @@ static inline int atomic_long_add_negative(long i, atomic_long_t *l) return ATOMIC_LONG_PFX(_add_negative)(i, v); } -static inline long atomic_long_add_return(long i, atomic_long_t *l) -{ - ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; - - return (long)ATOMIC_LONG_PFX(_add_return)(i, v); -} - -static inline long atomic_long_sub_return(long i, atomic_long_t *l) -{ - ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; - - return (long)ATOMIC_LONG_PFX(_sub_return)(i, v); -} - static inline long atomic_long_inc_return(atomic_long_t *l) { ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; @@ -141,9 +177,5 @@ static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u) #define atomic_long_inc_not_zero(l) \ ATOMIC_LONG_PFX(_inc_not_zero)((ATOMIC_LONG_PFX(_t) *)(l)) -#define atomic_long_cmpxchg(l, old, new) \ - (ATOMIC_LONG_PFX(_cmpxchg)((ATOMIC_LONG_PFX(_t) *)(l), (old), (new))) -#define atomic_long_xchg(v, new) \ - (ATOMIC_LONG_PFX(_xchg)((ATOMIC_LONG_PFX(_t) *)(v), (new))) #endif /* _ASM_GENERIC_ATOMIC_LONG_H */ -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/