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X-OriginatorOrg: nokia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Jan 2021 20:36:35.0580 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7209ce51-a3b7-43f6-7ea7-08d8c3033d2c X-MS-Exchange-CrossTenant-Id: 5d471751-9675-428d-917b-70f44f9630b0 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=5d471751-9675-428d-917b-70f44f9630b0;Ip=[131.228.2.8];Helo=[fihe3nok0734.emea.nsn-net.net] X-MS-Exchange-CrossTenant-AuthSource: DB5EUR03FT033.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR07MB6286 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexander Sverdlin This will save one SYNCW on Octeon and improve tight uncontended spinlock loop performance by 17%. Signed-off-by: Alexander Sverdlin --- arch/mips/include/asm/atomic.h | 3 +++ arch/mips/include/asm/cmpxchg.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h index f904084..a4e5116 100644 --- a/arch/mips/include/asm/atomic.h +++ b/arch/mips/include/asm/atomic.h @@ -264,4 +264,7 @@ ATOMIC_SIP_OP(atomic64, s64, dsubu, lld, scd) #undef ATOMIC_SIP_OP +#define atomic_cmpxchg_relaxed(v, o, n) \ + (cmpxchg_relaxed(&((v)->counter), (o), (n))) + #endif /* _ASM_ATOMIC_H */ diff --git a/arch/mips/include/asm/cmpxchg.h b/arch/mips/include/asm/cmpxchg.h index 5b0b3a6..620f01a 100644 --- a/arch/mips/include/asm/cmpxchg.h +++ b/arch/mips/include/asm/cmpxchg.h @@ -182,6 +182,8 @@ unsigned long __cmpxchg(volatile void *ptr, unsigned long old, (unsigned long)(__typeof__(*(ptr)))(new), \ sizeof(*(ptr)))) +#define cmpxchg_relaxed cmpxchg_local + #define cmpxchg(ptr, old, new) \ ({ \ __typeof__(*(ptr)) __res; \ -- 2.10.2