diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2013-03-21 22:49:50 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-04-08 17:39:26 +0200 |
| commit | d1dba0fcd3e62f32d5925bcb91eba8757951464c (patch) | |
| tree | e88e2dfcf1f2fd1f23727192b8ac2cc46a5643ac | |
| parent | dfa174dcf841d0665065dedec2bc133227da56ef (diff) | |
metag: Use generic idle loop
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: James Hogan <james.hogan@imgtec.com>
Link: http://lkml.kernel.org/r/20130321215234.606480852@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/metag/Kconfig | 1 | ||||
| -rw-r--r-- | arch/metag/kernel/process.c | 35 | ||||
| -rw-r--r-- | arch/metag/kernel/smp.c | 2 |
3 files changed, 8 insertions, 30 deletions
diff --git a/arch/metag/Kconfig b/arch/metag/Kconfig index afc8973d148..3164f6cebe2 100644 --- a/arch/metag/Kconfig +++ b/arch/metag/Kconfig @@ -7,6 +7,7 @@ config METAG select EMBEDDED select GENERIC_ATOMIC64 select GENERIC_CLOCKEVENTS + select GENERIC_IDLE_LOOP select GENERIC_IRQ_SHOW select GENERIC_SMP_IDLE_THREAD select HAVE_64BIT_ALIGNED_ACCESS diff --git a/arch/metag/kernel/process.c b/arch/metag/kernel/process.c index c6efe62e5b7..dc592354456 100644 --- a/arch/metag/kernel/process.c +++ b/arch/metag/kernel/process.c @@ -22,6 +22,7 @@ #include <linux/pm.h> #include <linux/syscalls.h> #include <linux/uaccess.h> +#include <linux/smp.h> #include <asm/core_reg.h> #include <asm/user_gateway.h> #include <asm/tcm.h> @@ -31,7 +32,7 @@ /* * Wait for the next interrupt and enable local interrupts */ -static inline void arch_idle(void) +void arch_cpu_idle(void) { int tmp; @@ -59,36 +60,12 @@ static inline void arch_idle(void) : "r" (get_trigger_mask())); } -void cpu_idle(void) -{ - set_thread_flag(TIF_POLLING_NRFLAG); - - while (1) { - tick_nohz_idle_enter(); - rcu_idle_enter(); - - while (!need_resched()) { - /* - * We need to disable interrupts here to ensure we don't - * miss a wakeup call. - */ - local_irq_disable(); - if (!need_resched()) { #ifdef CONFIG_HOTPLUG_CPU - if (cpu_is_offline(smp_processor_id())) - cpu_die(); -#endif - arch_idle(); - } else { - local_irq_enable(); - } - } - - rcu_idle_exit(); - tick_nohz_idle_exit(); - schedule_preempt_disabled(); - } +void arch_cpu_idle_dead(void) +{ + cpu_die(); } +#endif void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); diff --git a/arch/metag/kernel/smp.c b/arch/metag/kernel/smp.c index 4b6d1f14df3..4de8fc8e31a 100644 --- a/arch/metag/kernel/smp.c +++ b/arch/metag/kernel/smp.c @@ -297,7 +297,7 @@ asmlinkage void secondary_start_kernel(void) /* * OK, it's off to the idle thread for us */ - cpu_idle(); + cpu_startup_entry(CPUHP_ONLINE); } void __init smp_cpus_done(unsigned int max_cpus) |