diff options
author | Paul Mundt <lethal@linux-sh.org> | 2010-04-26 19:08:55 +0900 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2010-04-26 19:08:55 +0900 |
commit | 763142d1efb56effe614d71185781796c4b83c78 (patch) | |
tree | f886c239786fd4be028e3a45006c5cc5c1b3a3f2 /arch/sh/include | |
parent | 8db2bc4559639680a94d4492ae4b7ce71298a74f (diff) |
sh: CPU hotplug support.
This adds preliminary support for CPU hotplug for SH SMP systems.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include')
-rw-r--r-- | arch/sh/include/asm/irq.h | 3 | ||||
-rw-r--r-- | arch/sh/include/asm/smp-ops.h | 16 | ||||
-rw-r--r-- | arch/sh/include/asm/smp.h | 19 |
3 files changed, 35 insertions, 3 deletions
diff --git a/arch/sh/include/asm/irq.h b/arch/sh/include/asm/irq.h index 99c593b3a827..02c2f0102cfa 100644 --- a/arch/sh/include/asm/irq.h +++ b/arch/sh/include/asm/irq.h @@ -1,6 +1,7 @@ #ifndef __ASM_SH_IRQ_H #define __ASM_SH_IRQ_H +#include <linux/cpumask.h> #include <asm/machvec.h> /* @@ -50,6 +51,8 @@ static inline int generic_irq_demux(int irq) #define irq_demux(irq) sh_mv.mv_irq_demux(irq) void init_IRQ(void); +void migrate_irqs(void); + asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs); #ifdef CONFIG_IRQSTACKS diff --git a/arch/sh/include/asm/smp-ops.h b/arch/sh/include/asm/smp-ops.h index 0581b2a4c8ce..c590f76856f1 100644 --- a/arch/sh/include/asm/smp-ops.h +++ b/arch/sh/include/asm/smp-ops.h @@ -7,20 +7,27 @@ struct plat_smp_ops { void (*prepare_cpus)(unsigned int max_cpus); void (*start_cpu)(unsigned int cpu, unsigned long entry_point); void (*send_ipi)(unsigned int cpu, unsigned int message); + int (*cpu_disable)(unsigned int cpu); + void (*cpu_die)(unsigned int cpu); + void (*play_dead)(void); }; +extern struct plat_smp_ops *mp_ops; extern struct plat_smp_ops shx3_smp_ops; #ifdef CONFIG_SMP static inline void plat_smp_setup(void) { - extern struct plat_smp_ops *mp_ops; /* private */ - BUG_ON(!mp_ops); mp_ops->smp_setup(); } +static inline void play_dead(void) +{ + mp_ops->play_dead(); +} + extern void register_smp_ops(struct plat_smp_ops *ops); #else @@ -34,6 +41,11 @@ static inline void register_smp_ops(struct plat_smp_ops *ops) { } +static inline void play_dead(void) +{ + BUG(); +} + #endif /* CONFIG_SMP */ #endif /* __ASM_SH_SMP_OPS_H */ diff --git a/arch/sh/include/asm/smp.h b/arch/sh/include/asm/smp.h index da5135b2579e..9070d943ddde 100644 --- a/arch/sh/include/asm/smp.h +++ b/arch/sh/include/asm/smp.h @@ -38,9 +38,26 @@ void smp_timer_broadcast(const struct cpumask *mask); void local_timer_interrupt(void); void local_timer_setup(unsigned int cpu); +void local_timer_stop(unsigned int cpu); void arch_send_call_function_single_ipi(int cpu); -extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); +void arch_send_call_function_ipi_mask(const struct cpumask *mask); + +void native_play_dead(void); +void native_cpu_die(unsigned int cpu); +int native_cpu_disable(unsigned int cpu); + +#ifdef CONFIG_HOTPLUG_CPU +void play_dead_common(void); +extern int __cpu_disable(void); + +static inline void __cpu_die(unsigned int cpu) +{ + extern struct plat_smp_ops *mp_ops; /* private */ + + mp_ops->cpu_die(cpu); +} +#endif static inline int hard_smp_processor_id(void) { |