Commit 45e75dfb authored by Anton Blanchard's avatar Anton Blanchard Committed by Linus Torvalds

[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: default avatarAnton Blanchard <anton@samba.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 050a0938
...@@ -20,18 +20,12 @@ ...@@ -20,18 +20,12 @@
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/smp.h> #include <linux/smp.h>
#include <linux/cpu.h> #include <linux/cpu.h>
#include <linux/module.h>
#include <linux/sysctl.h> #include <linux/sysctl.h>
#include <linux/smp.h>
#include <asm/system.h> #include <asm/system.h>
#include <asm/processor.h> #include <asm/processor.h>
#include <asm/mmu.h>
#include <asm/cputable.h> #include <asm/cputable.h>
#include <asm/time.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/systemcfg.h>
#include <asm/machdep.h> #include <asm/machdep.h>
...@@ -49,7 +43,8 @@ int default_idle(void) ...@@ -49,7 +43,8 @@ int default_idle(void)
set_thread_flag(TIF_POLLING_NRFLAG); set_thread_flag(TIF_POLLING_NRFLAG);
while (!need_resched() && !cpu_is_offline(cpu)) { while (!need_resched() && !cpu_is_offline(cpu)) {
barrier(); ppc64_runlatch_off();
/* /*
* Go into low thread priority and possibly * Go into low thread priority and possibly
* low power mode. * low power mode.
...@@ -64,6 +59,7 @@ int default_idle(void) ...@@ -64,6 +59,7 @@ int default_idle(void)
set_need_resched(); set_need_resched();
} }
ppc64_runlatch_on();
schedule(); schedule();
if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING)
cpu_die(); cpu_die();
...@@ -74,17 +70,22 @@ int default_idle(void) ...@@ -74,17 +70,22 @@ int default_idle(void)
int native_idle(void) int native_idle(void)
{ {
while(1) { while (1) {
/* check CPU type here */ ppc64_runlatch_off();
if (!need_resched()) if (!need_resched())
power4_idle(); power4_idle();
if (need_resched())
if (need_resched()) {
ppc64_runlatch_on();
schedule(); schedule();
}
if (cpu_is_offline(raw_smp_processor_id()) && if (cpu_is_offline(smp_processor_id()) &&
system_state == SYSTEM_RUNNING) system_state == SYSTEM_RUNNING)
cpu_die(); cpu_die();
} }
return 0; return 0;
} }
......
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