---

yaml --- r: 34356 b: refs/heads/master c: 1ce28d6 h: refs/heads/master v: v3
git-mirror · Aug 11, 2006 · 1780432 · 1780432
1 parent 642a7b1
commit 1780432
Show file tree

Hide file tree

Showing 2 changed files with 9 additions and 6 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: cd878479792cc1e4bc9d62ed0ef2c4454743848c
+refs/heads/master: 1ce28d6b19112a7c76af8e971e2de3109d19a943
diff --git a/trunk/drivers/cpufreq/cpufreq_ondemand.c b/trunk/drivers/cpufreq/cpufreq_ondemand.c
@@ -305,25 +305,28 @@ static void do_dbs_timer(void *data)
 {
 	unsigned int cpu = smp_processor_id();
 	struct cpu_dbs_info_s *dbs_info = &per_cpu(cpu_dbs_info, cpu);
+	/* We want all CPUs to do sampling nearly on same jiffy */
+	int delay = usecs_to_jiffies(dbs_tuners_ins.sampling_rate);
+	delay -= jiffies % delay;
 
 	if (!dbs_info->enable)
 		return;
 
 	lock_cpu_hotplug();
 	dbs_check_cpu(dbs_info);
 	unlock_cpu_hotplug();
-	queue_delayed_work_on(cpu, kondemand_wq, &dbs_info->work,
-			usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
+	queue_delayed_work_on(cpu, kondemand_wq, &dbs_info->work, delay);
 }
 
 static inline void dbs_timer_init(unsigned int cpu)
 {
 	struct cpu_dbs_info_s *dbs_info = &per_cpu(cpu_dbs_info, cpu);
+	/* We want all CPUs to do sampling nearly on same jiffy */
+	int delay = usecs_to_jiffies(dbs_tuners_ins.sampling_rate);
+	delay -= jiffies % delay;
 
 	INIT_WORK(&dbs_info->work, do_dbs_timer, 0);
-	queue_delayed_work_on(cpu, kondemand_wq, &dbs_info->work,
-			usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
-	return;
+	queue_delayed_work_on(cpu, kondemand_wq, &dbs_info->work, delay);
 }
 
 static inline void dbs_timer_exit(struct cpu_dbs_info_s *dbs_info)