diff options
Diffstat (limited to 'arch/sh/kernel/smp.c')
| -rw-r--r-- | arch/sh/kernel/smp.c | 39 |
1 files changed, 12 insertions, 27 deletions
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c index 509b36b4511..fc5acfc93c9 100644 --- a/arch/sh/kernel/smp.c +++ b/arch/sh/kernel/smp.c @@ -20,13 +20,14 @@ #include <linux/module.h> #include <linux/cpu.h> #include <linux/interrupt.h> -#include <asm/atomic.h> +#include <linux/sched.h> +#include <linux/atomic.h> #include <asm/processor.h> -#include <asm/system.h> #include <asm/mmu_context.h> #include <asm/smp.h> #include <asm/cacheflush.h> #include <asm/sections.h> +#include <asm/setup.h> int __cpu_number_map[NR_CPUS]; /* Map physical to logical */ int __cpu_logical_map[NR_CPUS]; /* Map logical to physical */ @@ -36,7 +37,7 @@ struct plat_smp_ops *mp_ops = NULL; /* State of each CPU */ DEFINE_PER_CPU(int, cpu_state) = { 0 }; -void __cpuinit register_smp_ops(struct plat_smp_ops *ops) +void register_smp_ops(struct plat_smp_ops *ops) { if (mp_ops) printk(KERN_WARNING "Overriding previously set SMP ops\n"); @@ -44,7 +45,7 @@ void __cpuinit register_smp_ops(struct plat_smp_ops *ops) mp_ops = ops; } -static inline void __cpuinit smp_store_cpu_info(unsigned int cpu) +static inline void smp_store_cpu_info(unsigned int cpu) { struct sh_cpuinfo *c = cpu_data + cpu; @@ -62,7 +63,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus) mp_ops->prepare_cpus(max_cpus); #ifndef CONFIG_HOTPLUG_CPU - init_cpu_present(&cpu_possible_map); + init_cpu_present(cpu_possible_mask); #endif } @@ -110,7 +111,7 @@ void play_dead_common(void) irq_ctx_exit(raw_smp_processor_id()); mb(); - __get_cpu_var(cpu_state) = CPU_DEAD; + __this_cpu_write(cpu_state, CPU_DEAD); local_irq_disable(); } @@ -122,7 +123,6 @@ void native_play_dead(void) int __cpu_disable(void) { unsigned int cpu = smp_processor_id(); - struct task_struct *p; int ret; ret = mp_ops->cpu_disable(cpu); @@ -152,11 +152,7 @@ int __cpu_disable(void) flush_cache_all(); local_flush_tlb_all(); - read_lock(&tasklist_lock); - for_each_process(p) - if (p->mm) - cpumask_clear_cpu(cpu, mm_cpumask(p->mm)); - read_unlock(&tasklist_lock); + clear_tasks_mm_cpumask(cpu); return 0; } @@ -178,7 +174,7 @@ void native_play_dead(void) } #endif -asmlinkage void __cpuinit start_secondary(void) +asmlinkage void start_secondary(void) { unsigned int cpu = smp_processor_id(); struct mm_struct *mm = &init_mm; @@ -207,7 +203,7 @@ asmlinkage void __cpuinit start_secondary(void) set_cpu_online(cpu, true); per_cpu(cpu_state, cpu) = CPU_ONLINE; - cpu_idle(); + cpu_startup_entry(CPUHP_ONLINE); } extern struct { @@ -219,22 +215,10 @@ extern struct { void *thread_info; } stack_start; -int __cpuinit __cpu_up(unsigned int cpu) +int __cpu_up(unsigned int cpu, struct task_struct *tsk) { - struct task_struct *tsk; unsigned long timeout; - tsk = cpu_data[cpu].idle; - if (!tsk) { - tsk = fork_idle(cpu); - if (IS_ERR(tsk)) { - pr_err("Failed forking idle task for cpu %d\n", cpu); - return PTR_ERR(tsk); - } - - cpu_data[cpu].idle = tsk; - } - per_cpu(cpu_state, cpu) = CPU_UP_PREPARE; /* Fill in data in head.S for secondary cpus */ @@ -323,6 +307,7 @@ void smp_message_recv(unsigned int msg) generic_smp_call_function_interrupt(); break; case SMP_MSG_RESCHEDULE: + scheduler_ipi(); break; case SMP_MSG_FUNCTION_SINGLE: generic_smp_call_function_single_interrupt(); |