diff options
| -rw-r--r-- | arch/powerpc/include/asm/time.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/irq.c | 9 | ||||
| -rw-r--r-- | arch/powerpc/kernel/time.c | 27 |
3 files changed, 17 insertions, 21 deletions
diff --git a/arch/powerpc/include/asm/time.h b/arch/powerpc/include/asm/time.h index bc3c745cb90..7eb10fb96cd 100644 --- a/arch/powerpc/include/asm/time.h +++ b/arch/powerpc/include/asm/time.h @@ -219,7 +219,7 @@ DECLARE_PER_CPU(struct cpu_usage, cpu_usage_array); extern void secondary_cpu_time_init(void); extern void iSeries_time_init_early(void); -extern void decrementer_check_overflow(void); +DECLARE_PER_CPU(u64, decrementers_next_tb); #endif /* __KERNEL__ */ #endif /* __POWERPC_TIME_H */ diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 745c1e7c10f..2ff4f5e5962 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -115,6 +115,15 @@ static inline notrace void set_soft_enabled(unsigned long enable) : : "r" (enable), "i" (offsetof(struct paca_struct, soft_enabled))); } +static inline notrace void decrementer_check_overflow(void) +{ + u64 now = get_tb_or_rtc(); + u64 *next_tb = &__get_cpu_var(decrementers_next_tb); + + if (now >= *next_tb) + set_dec(1); +} + notrace void arch_local_irq_restore(unsigned long en) { /* diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index b1990b987e2..9754743db8b 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -114,12 +114,8 @@ static struct clock_event_device decrementer_clockevent = { .features = CLOCK_EVT_FEAT_ONESHOT, }; -struct decrementer_clock { - struct clock_event_device event; - u64 next_tb; -}; - -static DEFINE_PER_CPU(struct decrementer_clock, decrementers); +DEFINE_PER_CPU(u64, decrementers_next_tb); +static DEFINE_PER_CPU(struct clock_event_device, decrementers); #ifdef CONFIG_PPC_ISERIES static unsigned long __initdata iSeries_recal_titan; @@ -570,8 +566,8 @@ void arch_irq_work_raise(void) void timer_interrupt(struct pt_regs * regs) { struct pt_regs *old_regs; - struct decrementer_clock *decrementer = &__get_cpu_var(decrementers); - struct clock_event_device *evt = &decrementer->event; + u64 *next_tb = &__get_cpu_var(decrementers_next_tb); + struct clock_event_device *evt = &__get_cpu_var(decrementers); /* Ensure a positive value is written to the decrementer, or else * some CPUs will continue to take decrementer exceptions. @@ -606,7 +602,7 @@ void timer_interrupt(struct pt_regs * regs) get_lppaca()->int_dword.fields.decr_int = 0; #endif - decrementer->next_tb = ~(u64)0; + *next_tb = ~(u64)0; if (evt->event_handler) evt->event_handler(evt); @@ -872,19 +868,10 @@ static void __init clocksource_init(void) clock->name, clock->mult, clock->shift); } -void decrementer_check_overflow(void) -{ - u64 now = get_tb_or_rtc(); - struct decrementer_clock *decrementer = &__get_cpu_var(decrementers); - - if (now >= decrementer->next_tb) - set_dec(1); -} - static int decrementer_set_next_event(unsigned long evt, struct clock_event_device *dev) { - __get_cpu_var(decrementers).next_tb = get_tb_or_rtc() + evt; + __get_cpu_var(decrementers_next_tb) = get_tb_or_rtc() + evt; set_dec(evt); return 0; } @@ -898,7 +885,7 @@ static void decrementer_set_mode(enum clock_event_mode mode, static void register_decrementer_clockevent(int cpu) { - struct clock_event_device *dec = &per_cpu(decrementers, cpu).event; + struct clock_event_device *dec = &per_cpu(decrementers, cpu); *dec = decrementer_clockevent; dec->cpumask = cpumask_of(cpu); |