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| author | Vasily Gorbik <gor@linux.ibm.com> | 2021-06-30 11:21:58 +0300 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2021-07-08 23:12:18 +0300 |
| commit | 4ee471fe5a5a891ac4fcd45b5457fcb17de694de (patch) | |
| tree | 9300264986652069d53954ed40532590b8245fd9 /arch/s390 | |
| parent | b55e692e6bcbec36b4e0ba683608e7e1e7aab8c7 (diff) | |
| download | linux-4ee471fe5a5a891ac4fcd45b5457fcb17de694de.tar.xz | |
s390/linkage: increase asm symbols alignment to 16
Both clang and gcc (for -march=z13 and later) align functions to 16
bytes at -O2 to benefit branch prediction.
Make asm symbols alignment consistent with that.
This also benefits potential ftrace code patching, which is currently
able to patch 8 aligned bytes at once.
With defconfig this currently increases .text size by 4104 bytes.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/linkage.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/linkage.h b/arch/s390/include/asm/linkage.h index a0a7a2c72bd4..24e8fed150cf 100644 --- a/arch/s390/include/asm/linkage.h +++ b/arch/s390/include/asm/linkage.h @@ -5,7 +5,7 @@ #include <asm/asm-const.h> #include <linux/stringify.h> -#define __ALIGN .align 4, 0x07 +#define __ALIGN .align 16, 0x07 #define __ALIGN_STR __stringify(__ALIGN) /* |