From 4140139734459db4dffc50dad7b9e21ed79a8dd9 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 12 Jul 2016 13:17:56 +0800 Subject: [PATCH] crypto: api - Optimise away crypto_yield when hard preemption is on When hard preemption is enabled there is no need to explicitly call crypto_yield. This patch eliminates it if that is the case. Signed-off-by: Herbert Xu --- include/crypto/algapi.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 0483f652ac27..8637cdfe382a 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -442,8 +442,10 @@ static inline int crypto_memneq(const void *a, const void *b, size_t size) static inline void crypto_yield(u32 flags) { +#if !defined(CONFIG_PREEMPT) || defined(CONFIG_PREEMPT_VOLUNTARY) if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) cond_resched(); +#endif } #endif /* _CRYPTO_ALGAPI_H */ -- 2.20.1