diff options
Diffstat (limited to 'arch/ppc64/kernel/idle.c')
| -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 b8cfb37e5f14..954395d42636 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; } |