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authorAnton Blanchard <anton@samba.org>2005-07-07 17:56:33 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-07 18:23:41 -0700
commit45e75dfb609df4391636c2218bec5ea04536601d (patch)
tree7b6bebf52bd2b27bc02d19f790482e9033d15ffb /arch
parent050a09389e045f37e5bf08718cf36909766e20d1 (diff)
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[PATCH] ppc64: idle fixups
- remove some unnecessary includes - add runlatch support - no need to use raw_smp_processor_id any more, current preempt debug logic checks for processes that are bound to one cpu. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/ppc64/kernel/idle.c23
1 files changed, 12 insertions, 11 deletions
diff --git a/arch/ppc64/kernel/idle.c b/arch/ppc64/kernel/idle.c
index b8cfb37e5f1..954395d4263 100644
--- a/arch/ppc64/kernel/idle.c
+++ b/arch/ppc64/kernel/idle.c
@@ -20,18 +20,12 @@
#include <linux/kernel.h>
#include <linux/smp.h>
#include <linux/cpu.h>
-#include <linux/module.h>
#include <linux/sysctl.h>
-#include <linux/smp.h>
#include <asm/system.h>
#include <asm/processor.h>
-#include <asm/mmu.h>
#include <asm/cputable.h>
#include <asm/time.h>
-#include <asm/iSeries/HvCall.h>
-#include <asm/iSeries/ItLpQueue.h>
-#include <asm/plpar_wrappers.h>
#include <asm/systemcfg.h>
#include <asm/machdep.h>
@@ -49,7 +43,8 @@ int default_idle(void)
set_thread_flag(TIF_POLLING_NRFLAG);
while (!need_resched() && !cpu_is_offline(cpu)) {
- barrier();
+ ppc64_runlatch_off();
+
/*
* Go into low thread priority and possibly
* low power mode.
@@ -64,6 +59,7 @@ int default_idle(void)
set_need_resched();
}
+ ppc64_runlatch_on();
schedule();
if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING)
cpu_die();
@@ -74,17 +70,22 @@ int default_idle(void)
int native_idle(void)
{
- while(1) {
- /* check CPU type here */
+ while (1) {
+ ppc64_runlatch_off();
+
if (!need_resched())
power4_idle();
- if (need_resched())
+
+ if (need_resched()) {
+ ppc64_runlatch_on();
schedule();
+ }
- if (cpu_is_offline(raw_smp_processor_id()) &&
+ if (cpu_is_offline(smp_processor_id()) &&
system_state == SYSTEM_RUNNING)
cpu_die();
}
+
return 0;
}