diff options
| author | Anton Blanchard <anton@samba.org> | 2005-07-07 17:56:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-07 18:23:41 -0700 |
| commit | 45e75dfb609df4391636c2218bec5ea04536601d (patch) | |
| tree | 7b6bebf52bd2b27bc02d19f790482e9033d15ffb /arch/ppc64 | |
| parent | 050a09389e045f37e5bf08718cf36909766e20d1 (diff) | |
[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/ppc64')
| -rw-r--r-- | arch/ppc64/kernel/idle.c | 23 |
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; } |