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 <herbert@gondor.apana.org.au>
mariux64 · Jul 18, 2016 · 4140139 · 4140139
1 parent 85eccdd
commit 4140139
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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 */