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linux-omap2: Add from OE for beagleboard

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git-svn-id: https://svn.o-hand.com/repos/poky/trunk@4869 311d38ba-8fff-0310-9ca6-ca027cbcb966
This commit is contained in:
Richard Purdie
2008-07-18 08:35:45 +00:00
parent e9ebcc4c19
commit 78fc9af3a9
33 changed files with 89332 additions and 0 deletions
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43
meta/packages/linux/linux-omap2-git/beagleboard/timer-suppression.patch Normal file
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@@ -0,0 +1,43 @@
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index b854a89..26f5569 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -253,6 +253,16 @@ void tick_nohz_stop_sched_tick(void)
/* Schedule the tick, if we are at least one jiffie off */
if ((long)delta_jiffies >= 1) {
+ /*
+ * calculate the expiry time for the next timer wheel
+ * timer
+ */
+ expires = ktime_add_ns(last_update, tick_period.tv64 *
+ delta_jiffies);
+
+ /* Skip reprogram of event if its not changed */
+ if(ts->tick_stopped && ktime_equal(expires, dev->next_event))
+ goto out2;
if (delta_jiffies > 1)
cpu_set(cpu, nohz_cpu_mask);
@@ -304,12 +314,7 @@ void tick_nohz_stop_sched_tick(void)
goto out;
}
- /*
- * calculate the expiry time for the next timer wheel
- * timer
- */
- expires = ktime_add_ns(last_update, tick_period.tv64 *
- delta_jiffies);
+ /* Mark expiries */
ts->idle_expires = expires;
if (ts->nohz_mode == NOHZ_MODE_HIGHRES) {
@@ -328,6 +333,7 @@ void tick_nohz_stop_sched_tick(void)
tick_do_update_jiffies64(ktime_get());
cpu_clear(cpu, nohz_cpu_mask);
}
+out2:
raise_softirq_irqoff(TIMER_SOFTIRQ);
out:
ts->next_jiffies = next_jiffies;