diff options
Diffstat (limited to 'arch/x86/crypto/serpent_avx2_glue.c')
| -rw-r--r-- | arch/x86/crypto/serpent_avx2_glue.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/x86/crypto/serpent_avx2_glue.c b/arch/x86/crypto/serpent_avx2_glue.c index 870f6d812a2d..5c806bf39f1d 100644 --- a/arch/x86/crypto/serpent_avx2_glue.c +++ b/arch/x86/crypto/serpent_avx2_glue.c @@ -184,6 +184,21 @@ struct crypt_priv { bool fpu_enabled; }; +#ifdef CONFIG_PREEMPT_RT_FULL +static void serpent_fpu_end_rt(struct crypt_priv *ctx) +{ + bool fpu_enabled = ctx->fpu_enabled; + + if (!fpu_enabled) + return; + serpent_fpu_end(fpu_enabled); + ctx->fpu_enabled = false; +} + +#else +static void serpent_fpu_end_rt(struct crypt_priv *ctx) { } +#endif + static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) { const unsigned int bsize = SERPENT_BLOCK_SIZE; @@ -199,10 +214,12 @@ static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) } while (nbytes >= SERPENT_PARALLEL_BLOCKS * bsize) { + kernel_fpu_resched(); serpent_ecb_enc_8way_avx(ctx->ctx, srcdst, srcdst); srcdst += bsize * SERPENT_PARALLEL_BLOCKS; nbytes -= bsize * SERPENT_PARALLEL_BLOCKS; } + serpent_fpu_end_rt(ctx); for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) __serpent_encrypt(ctx->ctx, srcdst, srcdst); @@ -223,10 +240,12 @@ static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) } while (nbytes >= SERPENT_PARALLEL_BLOCKS * bsize) { + kernel_fpu_resched(); serpent_ecb_dec_8way_avx(ctx->ctx, srcdst, srcdst); srcdst += bsize * SERPENT_PARALLEL_BLOCKS; nbytes -= bsize * SERPENT_PARALLEL_BLOCKS; } + serpent_fpu_end_rt(ctx); for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) __serpent_decrypt(ctx->ctx, srcdst, srcdst); |