Merge git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt

* git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt:
  clocksource: make clocksource watchdog cycle through online CPUs
  Documentation: move timer related documentation to a single place
  clockevents: optimise tick_nohz_stop_sched_tick() a bit
  locking: remove unused double_spin_lock()
  hrtimers: simplify lockdep handling
  timers: simplify lockdep handling
  posix-timers: fix shadowed variables
  timer_list: add annotations to workqueue.c
  hrtimer: use nanosleep specific restart_block fields
  hrtimer: add nanosleep specific restart_block member

1 files changed, 10 insertions, 12 deletions

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 98bee013f71..c642ef75069 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1354,13 +1354,13 @@ long __sched hrtimer_nanosleep_restart(struct restart_block *restart)
 	struct hrtimer_sleeper t;
 	struct timespec __user  *rmtp;
 
-	hrtimer_init(&t.timer, restart->arg0, HRTIMER_MODE_ABS);
-	t.timer.expires.tv64 = ((u64)restart->arg3 << 32) | (u64) restart->arg2;
+	hrtimer_init(&t.timer, restart->nanosleep.index, HRTIMER_MODE_ABS);
+	t.timer.expires.tv64 = restart->nanosleep.expires;
 
 	if (do_nanosleep(&t, HRTIMER_MODE_ABS))
 		return 0;
 
-	rmtp = (struct timespec __user *)restart->arg1;
+	rmtp = restart->nanosleep.rmtp;
 	if (rmtp) {
 		int ret = update_rmtp(&t.timer, rmtp);
 		if (ret <= 0)
@@ -1394,10 +1394,9 @@ long hrtimer_nanosleep(struct timespec *rqtp, struct timespec __user *rmtp,
 
 	restart = &current_thread_info()->restart_block;
 	restart->fn = hrtimer_nanosleep_restart;
-	restart->arg0 = (unsigned long) t.timer.base->index;
-	restart->arg1 = (unsigned long) rmtp;
-	restart->arg2 = t.timer.expires.tv64 & 0xFFFFFFFF;
-	restart->arg3 = t.timer.expires.tv64 >> 32;
+	restart->nanosleep.index = t.timer.base->index;
+	restart->nanosleep.rmtp = rmtp;
+	restart->nanosleep.expires = t.timer.expires.tv64;
 
 	return -ERESTART_RESTARTBLOCK;
 }
@@ -1425,7 +1424,6 @@ static void __cpuinit init_hrtimers_cpu(int cpu)
 	int i;
 
 	spin_lock_init(&cpu_base->lock);
-	lockdep_set_class(&cpu_base->lock, &cpu_base->lock_key);
 
 	for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++)
 		cpu_base->clock_base[i].cpu_base = cpu_base;
@@ -1466,16 +1464,16 @@ static void migrate_hrtimers(int cpu)
 	tick_cancel_sched_timer(cpu);
 
 	local_irq_disable();
-	double_spin_lock(&new_base->lock, &old_base->lock,
-			 smp_processor_id() < cpu);
+	spin_lock(&new_base->lock);
+	spin_lock_nested(&old_base->lock, SINGLE_DEPTH_NESTING);
 
 	for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) {
 		migrate_hrtimer_list(&old_base->clock_base[i],
 				     &new_base->clock_base[i]);
 	}
 
-	double_spin_unlock(&new_base->lock, &old_base->lock,
-			   smp_processor_id() < cpu);
+	spin_unlock(&old_base->lock);
+	spin_unlock(&new_base->lock);
 	local_irq_enable();
 	put_cpu_var(hrtimer_bases);
 }