X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=arch%2Fx86%2Fkernel%2Fprocess.c;h=ca989158e847936e893c7110b4a328ea1549d452;hb=bfd1be1857e5a3385bf146e02e6dc3dd4241bec1;hp=6638294cec8d2bf048276ddd3c68246c215f42a2;hpb=4f0628963c86d2f97b8cb9acc024a7fe288a6a57;p=safe%2Fjmp%2Flinux-2.6

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 6638294..ca98915 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -8,7 +8,7 @@
 #include <linux/module.h>
 #include <linux/pm.h>
 #include <linux/clockchips.h>
-#include <linux/ftrace.h>
+#include <trace/power.h>
 #include <asm/system.h>
 #include <asm/apic.h>
 #include <asm/idle.h>
@@ -22,6 +22,9 @@ EXPORT_SYMBOL(idle_nomwait);
 
 struct kmem_cache *task_xstate_cachep;
 
+DEFINE_TRACE(power_start);
+DEFINE_TRACE(power_end);
+
 int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
 {
 	*dst = *src;
@@ -65,11 +68,11 @@ void exit_thread(void)
 {
 	struct task_struct *me = current;
 	struct thread_struct *t = &me->thread;
+	unsigned long *bp = t->io_bitmap_ptr;
 
-	if (me->thread.io_bitmap_ptr) {
+	if (bp) {
 		struct tss_struct *tss = &per_cpu(init_tss, get_cpu());
 
-		kfree(t->io_bitmap_ptr);
 		t->io_bitmap_ptr = NULL;
 		clear_thread_flag(TIF_IO_BITMAP);
 		/*
@@ -78,6 +81,7 @@ void exit_thread(void)
 		memset(tss->io_bitmap, 0xff, t->io_bitmap_max);
 		t->io_bitmap_max = 0;
 		put_cpu();
+		kfree(bp);
 	}
 
 	ds_exit_thread(current);
@@ -479,7 +483,8 @@ static int c1e_detected;
 
 void c1e_remove_cpu(int cpu)
 {
-	cpumask_clear_cpu(cpu, c1e_mask);
+	if (c1e_mask != NULL)
+		cpumask_clear_cpu(cpu, c1e_mask);
 }
 
 /*
@@ -556,13 +561,20 @@ void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
 		pm_idle = mwait_idle;
 	} else if (check_c1e_idle(c)) {
 		printk(KERN_INFO "using C1E aware idle routine\n");
-		alloc_cpumask_var(&c1e_mask, GFP_KERNEL);
-		cpumask_clear(c1e_mask);
 		pm_idle = c1e_idle;
 	} else
 		pm_idle = default_idle;
 }
 
+void __init init_c1e_mask(void)
+{
+	/* If we're using c1e_idle, we need to allocate c1e_mask. */
+	if (pm_idle == c1e_idle) {
+		alloc_cpumask_var(&c1e_mask, GFP_KERNEL);
+		cpumask_clear(c1e_mask);
+	}
+}
+
 static int __init idle_setup(char *str)
 {
 	if (!str)