* [PATCH] crypto: sha1 - use Kbuild supplied flags for AVX test
@ 2012-05-24 9:13 Mathias Krause
2012-06-12 10:02 ` Herbert Xu
0 siblings, 1 reply; 2+ messages in thread
From: Mathias Krause @ 2012-05-24 9:13 UTC (permalink / raw)
To: Herbert Xu, David S. Miller; +Cc: linux-crypto, Mathias Krause
Commit ea4d26ae ("raid5: add AVX optimized RAID5 checksumming")
introduced x86/ arch wide defines for AFLAGS and CFLAGS indicating AVX
support in binutils based on the same test we have in x86/crypto/ right
now. To minimize duplication drop our implementation in favour to the
one in x86/.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
---
This should be applied to cryptodev-2.6.git after it contains the above
mentioned commit, e.g. after cryptodev-2.6.git rebased to/merged v3.5-rc1.
arch/x86/crypto/Makefile | 7 -------
arch/x86/crypto/sha1_ssse3_asm.S | 2 +-
arch/x86/crypto/sha1_ssse3_glue.c | 6 +++---
3 files changed, 4 insertions(+), 11 deletions(-)
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index e191ac0..479f95a 100644
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -34,12 +34,5 @@ salsa20-x86_64-y := salsa20-x86_64-asm_64.o salsa20_glue.o
serpent-sse2-x86_64-y := serpent-sse2-x86_64-asm_64.o serpent_sse2_glue.o
aesni-intel-y := aesni-intel_asm.o aesni-intel_glue.o fpu.o
-
ghash-clmulni-intel-y := ghash-clmulni-intel_asm.o ghash-clmulni-intel_glue.o
-
-# enable AVX support only when $(AS) can actually assemble the instructions
-ifeq ($(call as-instr,vpxor %xmm0$(comma)%xmm1$(comma)%xmm2,yes,no),yes)
-AFLAGS_sha1_ssse3_asm.o += -DSHA1_ENABLE_AVX_SUPPORT
-CFLAGS_sha1_ssse3_glue.o += -DSHA1_ENABLE_AVX_SUPPORT
-endif
sha1-ssse3-y := sha1_ssse3_asm.o sha1_ssse3_glue.o
diff --git a/arch/x86/crypto/sha1_ssse3_asm.S b/arch/x86/crypto/sha1_ssse3_asm.S
index b2c2f57..49d6987 100644
--- a/arch/x86/crypto/sha1_ssse3_asm.S
+++ b/arch/x86/crypto/sha1_ssse3_asm.S
@@ -468,7 +468,7 @@ W_PRECALC_SSSE3
*/
SHA1_VECTOR_ASM sha1_transform_ssse3
-#ifdef SHA1_ENABLE_AVX_SUPPORT
+#ifdef CONFIG_AS_AVX
.macro W_PRECALC_AVX
diff --git a/arch/x86/crypto/sha1_ssse3_glue.c b/arch/x86/crypto/sha1_ssse3_glue.c
index f916499..4a11a9d 100644
--- a/arch/x86/crypto/sha1_ssse3_glue.c
+++ b/arch/x86/crypto/sha1_ssse3_glue.c
@@ -35,7 +35,7 @@
asmlinkage void sha1_transform_ssse3(u32 *digest, const char *data,
unsigned int rounds);
-#ifdef SHA1_ENABLE_AVX_SUPPORT
+#ifdef CONFIG_AS_AVX
asmlinkage void sha1_transform_avx(u32 *digest, const char *data,
unsigned int rounds);
#endif
@@ -184,7 +184,7 @@ static struct shash_alg alg = {
}
};
-#ifdef SHA1_ENABLE_AVX_SUPPORT
+#ifdef CONFIG_AS_AVX
static bool __init avx_usable(void)
{
u64 xcr0;
@@ -209,7 +209,7 @@ static int __init sha1_ssse3_mod_init(void)
if (cpu_has_ssse3)
sha1_transform_asm = sha1_transform_ssse3;
-#ifdef SHA1_ENABLE_AVX_SUPPORT
+#ifdef CONFIG_AS_AVX
/* allow AVX to override SSSE3, it's a little faster */
if (avx_usable())
sha1_transform_asm = sha1_transform_avx;
--
1.5.6.5
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] crypto: sha1 - use Kbuild supplied flags for AVX test
2012-05-24 9:13 [PATCH] crypto: sha1 - use Kbuild supplied flags for AVX test Mathias Krause
@ 2012-06-12 10:02 ` Herbert Xu
0 siblings, 0 replies; 2+ messages in thread
From: Herbert Xu @ 2012-06-12 10:02 UTC (permalink / raw)
To: Mathias Krause; +Cc: David S. Miller, linux-crypto
On Thu, May 24, 2012 at 11:13:42AM +0200, Mathias Krause wrote:
> Commit ea4d26ae ("raid5: add AVX optimized RAID5 checksumming")
> introduced x86/ arch wide defines for AFLAGS and CFLAGS indicating AVX
> support in binutils based on the same test we have in x86/crypto/ right
> now. To minimize duplication drop our implementation in favour to the
> one in x86/.
>
> Signed-off-by: Mathias Krause <minipli@googlemail.com>
Patch applied. Thanks.
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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