diff options
| author |   Johannes Berg <johannes@sipsolutions.net> | 2007-05-03 06:33:51 +1000 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2007-05-07 20:31:13 +1000 |
| commit | d9333afd6a714760c13f76ba275a32ec7bd979c1 (patch) | |
| tree | b75cb98ff938edca5aa5254b209d58037e8ec89c /include/asm-powerpc | |
| parent | [POWERPC] bootwrapper: Only build cuImage if CONFIG_DEVICE_TREE is non-empty (diff) | |
| download | linux-dev-d9333afd6a714760c13f76ba275a32ec7bd979c1.tar.xz linux-dev-d9333afd6a714760c13f76ba275a32ec7bd979c1.zip | |
[POWERPC] powermac: Support G5 CPU hotplug
This allows "hotplugging" of CPUs on G5 machines. CPUs that are
disabled are put into an idle loop with the decrementer frequency set
to minimum. To wake them up again we kick them just like when bringing
them up. To stop those CPUs from messing with any global state we stop
them from entering the timer interrupt.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc')
| -rw-r--r-- | include/asm-powerpc/machdep.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h index b204926ce913..bbd17d0e170d 100644 --- a/include/asm-powerpc/machdep.h +++ b/include/asm-powerpc/machdep.h @@ -248,6 +248,7 @@ struct machdep_calls { }; extern void power4_idle(void); +extern void power4_cpu_offline_powersave(void); extern void ppc6xx_idle(void); /* |