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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2016-07-12 13:17:56 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-07-18 17:35:49 +0800 |
| commit | 4140139734459db4dffc50dad7b9e21ed79a8dd9 (patch) | |
| tree | 10195cc22c1bf1c10216a1d1abcf2fe05169c96f /include/crypto/algapi.h | |
| parent | 85eccddee401ae81067e763516889780b5545160 (diff) | |
| download | lwn-4140139734459db4dffc50dad7b9e21ed79a8dd9.tar.gz lwn-4140139734459db4dffc50dad7b9e21ed79a8dd9.zip | |
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>
Diffstat (limited to 'include/crypto/algapi.h')
| -rw-r--r-- | include/crypto/algapi.h | 2 |
1 files changed, 2 insertions, 0 deletions
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 */ |