diff options
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/include/asm/localtimer.h | 12 | ||||
-rw-r--r-- | arch/arm/include/asm/smp_twd.h | 1 | ||||
-rw-r--r-- | arch/arm/kernel/smp.c | 19 | ||||
-rw-r--r-- | arch/arm/kernel/smp_twd.c | 10 |
4 files changed, 18 insertions, 24 deletions
diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h index 50c7e7cfd670..6bc63ab498ce 100644 --- a/arch/arm/include/asm/localtimer.h +++ b/arch/arm/include/asm/localtimer.h @@ -30,7 +30,6 @@ asmlinkage void do_local_timer(struct pt_regs *); #include "smp_twd.h" #define local_timer_ack() twd_timer_ack() -#define local_timer_stop() twd_timer_stop() #else @@ -40,11 +39,6 @@ asmlinkage void do_local_timer(struct pt_regs *); */ int local_timer_ack(void); -/* - * Stop a local timer interrupt. - */ -void local_timer_stop(void); - #endif /* @@ -52,12 +46,6 @@ void local_timer_stop(void); */ void local_timer_setup(struct clock_event_device *); -#else - -static inline void local_timer_stop(void) -{ -} - #endif #endif diff --git a/arch/arm/include/asm/smp_twd.h b/arch/arm/include/asm/smp_twd.h index 634f357be6bb..fed9981fba08 100644 --- a/arch/arm/include/asm/smp_twd.h +++ b/arch/arm/include/asm/smp_twd.h @@ -22,7 +22,6 @@ struct clock_event_device; extern void __iomem *twd_base; -void twd_timer_stop(void); int twd_timer_ack(void); void twd_timer_setup(struct clock_event_device *); diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 6afaf6f73069..4dc864ef9cdf 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -189,6 +189,8 @@ int __cpuinit __cpu_up(unsigned int cpu) } #ifdef CONFIG_HOTPLUG_CPU +static void percpu_timer_stop(void); + /* * __cpu_disable runs on the processor to be shutdown. */ @@ -216,7 +218,7 @@ int __cpu_disable(void) /* * Stop the local timer for this CPU. */ - local_timer_stop(); + percpu_timer_stop(); /* * Flush user cache and TLB mappings, and then remove this CPU @@ -539,6 +541,21 @@ void __cpuinit percpu_timer_setup(void) local_timer_setup(evt); } +#ifdef CONFIG_HOTPLUG_CPU +/* + * The generic clock events code purposely does not stop the local timer + * on CPU_DEAD/CPU_DEAD_FROZEN hotplug events, so we have to do it + * manually here. + */ +static void percpu_timer_stop(void) +{ + unsigned int cpu = smp_processor_id(); + struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu); + + evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt); +} +#endif + static DEFINE_SPINLOCK(stop_lock); /* diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index 35882fbf37f9..24585d97c104 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -150,13 +150,3 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk) clockevents_register_device(clk); } - -#ifdef CONFIG_HOTPLUG_CPU -/* - * take a local timer down - */ -void twd_timer_stop(void) -{ - __raw_writel(0, twd_base + TWD_TIMER_CONTROL); -} -#endif |