https://github.com/torvalds/linux
Revision 4ee471fe5a5a891ac4fcd45b5457fcb17de694de authored by Vasily Gorbik on 30 June 2021, 08:21:58 UTC, committed by Vasily Gorbik on 08 July 2021, 20:12:18 UTC
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>
1 parent b55e692
History
Tip revision: 4ee471fe5a5a891ac4fcd45b5457fcb17de694de authored by Vasily Gorbik on 30 June 2021, 08:21:58 UTC
s390/linkage: increase asm symbols alignment to 16
Tip revision: 4ee471f
File Mode Size
Documentation
LICENSES
arch
block
certs
crypto
drivers
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.clang-format -rw-r--r-- 16.6 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 71 bytes
.gitattributes -rw-r--r-- 62 bytes
.gitignore -rw-r--r-- 1.9 KB
.mailmap -rw-r--r-- 19.7 KB
COPYING -rw-r--r-- 496 bytes
CREDITS -rw-r--r-- 98.6 KB
Kbuild -rw-r--r-- 1.3 KB
Kconfig -rw-r--r-- 555 bytes
MAINTAINERS -rw-r--r-- 593.7 KB
Makefile -rw-r--r-- 64.4 KB
README -rw-r--r-- 727 bytes

README

back to top