[POWERPC] Timer interrupt: use a struct for two per_cpu varables

Browse source

timer_interrupt() was calculating per_cpu_offset several times, having to
start from the toc because of potential aliasing issues.

Placing both decrementer per_cpu varables in a struct and calculating
the address once with __get_cpu_var results in better code on both 32
and 64 bit.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

...

This commit is contained in:

Milton Miller 2007-12-14 15:52:15 +11:00 • committed by Paul Mackerras

parent 8b5621f183

commit 6e6b44e822

1 changed files with 12 additions and 8 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

20

arch/powerpc/kernel/time.c

View file