s390/linkage: increase asm symbols alignment to 16

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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>

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Vasily Gorbik 2021-06-30 10:21:58 +02:00

parent b55e692e6b

commit 4ee471fe5a

1 changed files with 1 additions and 1 deletions

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arch/s390/include/asm/linkage.h

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