From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sun, 7 Sep 2008 22:31:39 +0000 (-0700)
Subject: hrtimer: incorporate feedback from Peter Zijlstra
X-Git-Tag: v2.6.28-rc1~18^2^2~9
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;ds=sidebyside;h=4ce105d30e08fb8a1783c55a0e48aa3fa200c455;p=linux-2.6-omap-h63xx.git

hrtimer: incorporate feedback from Peter Zijlstra

(based on  lkml review)
* use rt_task()
* task_nice() has a sign

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
---

diff --git a/fs/select.c b/fs/select.c
index 5e61b43d076..fdd8584e536 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -46,7 +46,7 @@ static unsigned long __estimate_accuracy(struct timespec *tv)
 	unsigned long slack;
 	int divfactor = 1000;
 
-	if (task_nice(current))
+	if (task_nice(current) > 0)
 		divfactor = divfactor / 5;
 
 	slack = tv->tv_nsec / divfactor;
@@ -66,8 +66,7 @@ static unsigned long estimate_accuracy(struct timespec *tv)
 	 * Realtime tasks get a slack of 0 for obvious reasons.
 	 */
 
-	if (current->policy == SCHED_FIFO ||
-		current->policy == SCHED_RR)
+	if (rt_task(current))
 		return 0;
 
 	ktime_get_ts(&now);
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 1c0473e8ecb..95db11f62ff 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -363,7 +363,7 @@ static inline int hrtimer_start_expires(struct hrtimer *timer,
 	soft = hrtimer_get_softexpires(timer);
 	hard = hrtimer_get_expires(timer);
 	delta = ktime_to_ns(ktime_sub(hard, soft));
-	return hrtimer_start_range_ns(timer, hrtimer_get_expires(timer), delta, mode);
+	return hrtimer_start_range_ns(timer, soft, delta, mode);
 }
 
 static inline int hrtimer_restart(struct hrtimer *timer)