mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-23 18:07:03 +00:00
34b753007d
It popped up in perf testing that the worker consumes some amount of CPU. It boils down to the increment of `ops` which causes cache line bouncing between the individual threads. This patch aligns the struct by 256 bytes to ensure that not a cache line is shared among CPUs. 128 byte is the x86 worst case and grep says that L1_CACHE_SHIFT is set to 8 on s390. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20161016190803.3392-1-bigeasy@linutronix.de Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
---|---|---|
.. | ||
accounting | ||
arch | ||
build | ||
cgroup | ||
firewire | ||
gpio | ||
hv | ||
iio | ||
include | ||
kvm/kvm_stat | ||
laptop | ||
lguest | ||
lib | ||
net | ||
nfsd | ||
objtool | ||
pcmcia | ||
perf | ||
power | ||
scripts | ||
spi | ||
testing | ||
thermal/tmon | ||
time | ||
usb | ||
virtio | ||
vm | ||
Makefile |