diff options
Diffstat (limited to 'arch/openrisc/kernel/process.c')
| -rw-r--r-- | arch/openrisc/kernel/process.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c index d7990df9025a..f8da545854f9 100644 --- a/arch/openrisc/kernel/process.c +++ b/arch/openrisc/kernel/process.c @@ -22,6 +22,9 @@ #include <linux/errno.h> #include <linux/sched.h> +#include <linux/sched/debug.h> +#include <linux/sched/task.h> +#include <linux/sched/task_stack.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/mm.h> @@ -75,7 +78,19 @@ void machine_power_off(void) __asm__("l.nop 1"); } +/* + * Send the doze signal to the cpu if available. + * Make sure, that all interrupts are enabled + */ +void arch_cpu_idle(void) +{ + local_irq_enable(); + if (mfspr(SPR_UPR) & SPR_UPR_PMP) + mtspr(SPR_PMR, mfspr(SPR_PMR) | SPR_PMR_DME); +} + void (*pm_power_off) (void) = machine_power_off; +EXPORT_SYMBOL(pm_power_off); /* * When a process does an "exec", machine state like FPU and debug @@ -226,6 +241,7 @@ int dump_fpu(struct pt_regs *regs, elf_fpregset_t * fpu) extern struct thread_info *_switch(struct thread_info *old_ti, struct thread_info *new_ti); +extern int lwa_flag; struct task_struct *__switch_to(struct task_struct *old, struct task_struct *new) @@ -243,6 +259,8 @@ struct task_struct *__switch_to(struct task_struct *old, new_ti = new->stack; old_ti = old->stack; + lwa_flag = 0; + current_thread_info_set[smp_processor_id()] = new_ti; last = (_switch(old_ti, new_ti))->task; |