X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=arch%2Fmips%2Fkernel%2Fprocess.c;h=99960940d4a410bba1e9842a7049161e74d04d25;hb=50b88c46f01939d19d4cdd30ad563d29265b6c59;hp=1eaaa450e20c3a83be8daf6cafe0e2935e45e5a1;hpb=6f2c55b843836d26528c56a0968689accaedbc67;p=safe%2Fjmp%2Flinux-2.6

diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 1eaaa45..9996094 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -17,7 +17,6 @@
 #include <linux/stddef.h>
 #include <linux/unistd.h>
 #include <linux/ptrace.h>
-#include <linux/slab.h>
 #include <linux/mman.h>
 #include <linux/personality.h>
 #include <linux/sys.h>
@@ -50,18 +49,34 @@
  */
 void __noreturn cpu_idle(void)
 {
+	int cpu;
+
+	/* CPU is going idle. */
+	cpu = smp_processor_id();
+
 	/* endless idle loop with no priority at all */
 	while (1) {
 		tick_nohz_stop_sched_tick(1);
-		while (!need_resched()) {
+		while (!need_resched() && cpu_online(cpu)) {
 #ifdef CONFIG_MIPS_MT_SMTC
 			extern void smtc_idle_loop_hook(void);
 
 			smtc_idle_loop_hook();
 #endif
-			if (cpu_wait)
+
+			if (cpu_wait) {
+				/* Don't trace irqs off for idle */
+				stop_critical_timings();
 				(*cpu_wait)();
+				start_critical_timings();
+			}
 		}
+#ifdef CONFIG_HOTPLUG_CPU
+		if (!cpu_online(cpu) && !cpu_isset(cpu, cpu_callin_map) &&
+		    (system_state == SYSTEM_RUNNING ||
+		     system_state == SYSTEM_BOOTING))
+			play_dead();
+#endif
 		tick_nohz_restart_sched_tick();
 		preempt_enable_no_resched();
 		schedule();
@@ -104,7 +119,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
 {
 	struct thread_info *ti = task_thread_info(p);
 	struct pt_regs *childregs;
-	long childksp;
+	unsigned long childksp;
 	p->set_child_tid = p->clear_child_tid = NULL;
 
 	childksp = (unsigned long)task_stack_page(p) + THREAD_SIZE - 32;
@@ -121,6 +136,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
 
 	/* set up new TSS. */
 	childregs = (struct pt_regs *) childksp - 1;
+	/*  Put the stack after the struct pt_regs.  */
+	childksp = (unsigned long) childregs;
 	*childregs = *regs;
 	childregs->regs[7] = 0;	/* Clear error flag */