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authorJohannes Berg <johannes@sipsolutions.net>2007-05-02 22:33:51 +0200
committerPaul Mackerras <paulus@samba.org>2007-05-07 12:31:13 +0200
commitd9333afd6a714760c13f76ba275a32ec7bd979c1 (patch)
treeb75cb98ff938edca5aa5254b209d58037e8ec89c /include/asm-powerpc
parent[POWERPC] bootwrapper: Only build cuImage if CONFIG_DEVICE_TREE is non-empty (diff)
downloadlinux-d9333afd6a714760c13f76ba275a32ec7bd979c1.tar.xz
linux-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.h1
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);
/*