X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fh8300%2Fkernel%2Fprocess.c;h=16ccddc69c2bbb579e97784b0e66913395a67bf9;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=b5f83e9f04db63eb1013267b65f94a891432e375;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c
index b5f83e9f0..16ccddc69 100644
--- a/arch/h8300/kernel/process.c
+++ b/arch/h8300/kernel/process.c
@@ -45,30 +45,29 @@
 #include <asm/setup.h>
 #include <asm/pgtable.h>
 
+void (*pm_power_off)(void) = NULL;
+EXPORT_SYMBOL(pm_power_off);
+
 asmlinkage void ret_from_fork(void);
 
 /*
  * The idle loop on an H8/300..
  */
 #if !defined(CONFIG_H8300H_SIM) && !defined(CONFIG_H8S_SIM)
-void default_idle(void)
+static void default_idle(void)
 {
-	while(1) {
-		if (!need_resched()) {
-			local_irq_enable();
-			__asm__("sleep");
-			local_irq_disable();
-		}
-		schedule();
-	}
+	local_irq_disable();
+	if (!need_resched()) {
+		local_irq_enable();
+		/* XXX: race here! What if need_resched() gets set now? */
+		__asm__("sleep");
+	} else
+		local_irq_enable();
 }
 #else
-void default_idle(void)
+static void default_idle(void)
 {
-	while(1) {
-		if (need_resched())
-			schedule();
-	}
+	cpu_relax();
 }
 #endif
 void (*idle)(void) = default_idle;
@@ -81,7 +80,13 @@ void (*idle)(void) = default_idle;
  */
 void cpu_idle(void)
 {
-	idle();
+	while (1) {
+		while (!need_resched())
+			idle();
+		preempt_enable_no_resched();
+		schedule();
+		preempt_disable();
+	}
 }
 
 void machine_restart(char * __unused)
@@ -90,8 +95,6 @@ void machine_restart(char * __unused)
 	__asm__("jmp @@0"); 
 }
 
-EXPORT_SYMBOL(machine_restart);
-
 void machine_halt(void)
 {
 	local_irq_disable();
@@ -99,8 +102,6 @@ void machine_halt(void)
 	for (;;);
 }
 
-EXPORT_SYMBOL(machine_halt);
-
 void machine_power_off(void)
 {
 	local_irq_disable();
@@ -108,8 +109,6 @@ void machine_power_off(void)
 	for (;;);
 }
 
-EXPORT_SYMBOL(machine_power_off);
-
 void show_regs(struct pt_regs * regs)
 {
 	printk("\nPC: %08lx  Status: %02x",
@@ -199,7 +198,7 @@ int copy_thread(int nr, unsigned long clone_flags,
 {
 	struct pt_regs * childregs;
 
-	childregs = ((struct pt_regs *) (THREAD_SIZE + (unsigned long) p->thread_info)) - 1;
+	childregs = (struct pt_regs *) (THREAD_SIZE + task_stack_page(p)) - 1;
 
 	*childregs = *regs;
 	childregs->retpc = (unsigned long) ret_from_fork;
@@ -211,34 +210,6 @@ int copy_thread(int nr, unsigned long clone_flags,
 	return 0;
 }
 
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs * regs, struct user * dump)
-{
-/* changed the size calculations - should hopefully work better. lbt */
-	dump->magic = CMAGIC;
-	dump->start_code = 0;
-	dump->start_stack = rdusp() & ~(PAGE_SIZE - 1);
-	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;
-
-	dump->u_ar0 = (struct user_regs_struct *)(((int)(&dump->regs)) -((int)(dump)));
-	dump->regs.er0 = regs->er0;
-	dump->regs.er1 = regs->er1;
-	dump->regs.er2 = regs->er2;
-	dump->regs.er3 = regs->er3;
-	dump->regs.er4 = regs->er4;
-	dump->regs.er5 = regs->er5;
-	dump->regs.er6 = regs->er6;
-	dump->regs.orig_er0 = regs->orig_er0;
-	dump->regs.ccr = regs->ccr;
-	dump->regs.pc  = regs->pc;
-}
-
 /*
  * sys_execve() executes a new program.
  */