#include <asm/system.h>
#include <asm/pgtable.h>
+void (*pm_power_off)(void) = NULL;
+EXPORT_SYMBOL(pm_power_off);
+
extern void ret_from_fork (void);
/* The idle loop. */
-void default_idle (void)
+static void default_idle (void)
{
- while (1) {
- while (! need_resched ())
- asm ("halt; nop; nop; nop; nop; nop" ::: "cc");
- schedule ();
- }
+ while (! need_resched ())
+ asm ("halt; nop; nop; nop; nop; nop" ::: "cc");
}
void (*idle)(void) = default_idle;
void cpu_idle (void)
{
/* endless idle loop with no priority at all */
- (*idle) ();
+ while (1) {
+ while (!need_resched())
+ (*idle) ();
+
+ preempt_enable_no_resched();
+ schedule();
+ preempt_disable();
+ }
}
/*
struct task_struct *p, struct pt_regs *regs)
{
/* Start pushing stuff from the top of the child's kernel stack. */
- unsigned long orig_ksp = (unsigned long)p->thread_info + THREAD_SIZE;
+ unsigned long orig_ksp = task_tos(p);
unsigned long ksp = orig_ksp;
/* We push two `state save' stack fames (see entry.S) on the new
kernel stack:
return 0;
}
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread (struct pt_regs *regs, struct user *dump)
-{
-#if 0 /* Later. XXX */
- dump->magic = CMAGIC;
- dump->start_code = 0;
- dump->start_stack = regs->gpr[GPR_SP];
- dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
- dump->u_dsize = ((unsigned long) (current->mm->brk +
- (PAGE_SIZE-1))) >> PAGE_SHIFT;
- dump->u_dsize -= dump->u_tsize;
- dump->u_ssize = 0;
-
- if (dump->start_stack < TASK_SIZE)
- dump->u_ssize = ((unsigned long) (TASK_SIZE - dump->start_stack)) >> PAGE_SHIFT;
-
- dump->u_ar0 = (struct user_regs_struct *)((int)&dump->regs - (int)dump);
- dump->regs = *regs;
- dump->u_fpvalid = 0;
-#endif
-}
-
/*
* sys_execve() executes a new program.
*/