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(parent: b55e692) | patch
s390/linkage: increase asm symbols alignment to 16
authorVasily Gorbik <gor@linux.ibm.com>
Wed, 30 Jun 2021 08:21:58 +0000 (10:21 +0200)
committerVasily Gorbik <gor@linux.ibm.com>
Thu, 8 Jul 2021 20:12:18 +0000 (22:12 +0200)
commit4ee471fe5a5a891ac4fcd45b5457fcb17de694de
tree9300264986652069d53954ed40532590b8245fd9tree | snapshot
parentb55e692e6bcbec36b4e0ba683608e7e1e7aab8c7commit | diff
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>
arch/s390/include/asm/linkage.h diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git