diff options
Diffstat (limited to 'arch/openrisc/kernel/process.c')
| -rw-r--r-- | arch/openrisc/kernel/process.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c index 7095dfe7666b..6e9d1cb519f2 100644 --- a/arch/openrisc/kernel/process.c +++ b/arch/openrisc/kernel/process.c @@ -36,7 +36,7 @@ #include <linux/mqueue.h> #include <linux/fs.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/pgtable.h> #include <asm/io.h> #include <asm/processor.h> @@ -75,6 +75,17 @@ 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; /* @@ -173,6 +184,19 @@ copy_thread(unsigned long clone_flags, unsigned long usp, if (usp) userregs->sp = usp; + + /* + * For CLONE_SETTLS set "tp" (r10) to the TLS pointer passed to sys_clone. + * + * The kernel entry is: + * int clone (long flags, void *child_stack, int *parent_tid, + * int *child_tid, struct void *tls) + * + * This makes the source r7 in the kernel registers. + */ + if (clone_flags & CLONE_SETTLS) + userregs->gpr[10] = userregs->gpr[7]; + userregs->gpr[11] = 0; /* Result from fork() */ kregs->gpr[20] = 0; /* Userspace thread */ @@ -213,6 +237,7 @@ 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) @@ -230,6 +255,8 @@ 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; |