[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>
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committed by
Linus Torvalds
parent
050a09389e
commit
45e75dfb60
@@ -20,18 +20,12 @@
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/smp.h>
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#include <linux/smp.h>
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#include <linux/cpu.h>
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#include <linux/cpu.h>
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#include <linux/module.h>
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#include <linux/sysctl.h>
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#include <linux/sysctl.h>
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#include <linux/smp.h>
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#include <asm/system.h>
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#include <asm/system.h>
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#include <asm/processor.h>
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#include <asm/processor.h>
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#include <asm/mmu.h>
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#include <asm/cputable.h>
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#include <asm/cputable.h>
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#include <asm/time.h>
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#include <asm/time.h>
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#include <asm/iSeries/HvCall.h>
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#include <asm/iSeries/ItLpQueue.h>
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#include <asm/plpar_wrappers.h>
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#include <asm/systemcfg.h>
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#include <asm/systemcfg.h>
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#include <asm/machdep.h>
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#include <asm/machdep.h>
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@@ -49,7 +43,8 @@ int default_idle(void)
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set_thread_flag(TIF_POLLING_NRFLAG);
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set_thread_flag(TIF_POLLING_NRFLAG);
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while (!need_resched() && !cpu_is_offline(cpu)) {
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while (!need_resched() && !cpu_is_offline(cpu)) {
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barrier();
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ppc64_runlatch_off();
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/*
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/*
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* Go into low thread priority and possibly
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* Go into low thread priority and possibly
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* low power mode.
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* low power mode.
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@@ -64,6 +59,7 @@ int default_idle(void)
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set_need_resched();
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set_need_resched();
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}
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}
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ppc64_runlatch_on();
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schedule();
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schedule();
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if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING)
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if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING)
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cpu_die();
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cpu_die();
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@@ -74,17 +70,22 @@ int default_idle(void)
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int native_idle(void)
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int native_idle(void)
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{
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{
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while(1) {
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while (1) {
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/* check CPU type here */
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ppc64_runlatch_off();
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if (!need_resched())
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if (!need_resched())
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power4_idle();
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power4_idle();
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if (need_resched())
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schedule();
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if (cpu_is_offline(raw_smp_processor_id()) &&
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if (need_resched()) {
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ppc64_runlatch_on();
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schedule();
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}
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if (cpu_is_offline(smp_processor_id()) &&
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system_state == SYSTEM_RUNNING)
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system_state == SYSTEM_RUNNING)
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cpu_die();
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cpu_die();
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}
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}
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return 0;
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return 0;
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}
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}
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