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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>
This commit is contained in:
Anton Blanchard 2005-07-07 17:56:33 -07:00 committed by Linus Torvalds
parent 050a09389e
commit 45e75dfb60
1 changed files with 13 additions and 12 deletions
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25
arch/ppc64/kernel/idle.c
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@ -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())
schedule();
if (cpu_is_offline(raw_smp_processor_id()) &&
if (need_resched()) {
ppc64_runlatch_on();
schedule();
}
if (cpu_is_offline(smp_processor_id()) &&
system_state == SYSTEM_RUNNING)
cpu_die();
}
return 0;
}