[PATCH] time/cpuidle:Fixup fallout from hrtimer broadcast modeinclusion

From: Preeti U Murthy
Date: Fri Feb 07 2014 - 12:33:16 EST


The broadcast timer registration has to be done only when
GENERIC_CLOCKEVENTS_BROADCAST and TICK_ONESHOT config options are enabled.
Also fix max_delta_ticks value for the pseudo clock device.

Reported-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
Signed-off-by: Preeti U Murthy <preeti@xxxxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
---

kernel/time/tick-broadcast-hrtimer.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/time/tick-broadcast-hrtimer.c b/kernel/time/tick-broadcast-hrtimer.c
index 5591aaa..bc383ac 100644
--- a/kernel/time/tick-broadcast-hrtimer.c
+++ b/kernel/time/tick-broadcast-hrtimer.c
@@ -81,7 +81,7 @@ static struct clock_event_device ce_broadcast_hrtimer = {
.min_delta_ns = 1,
.max_delta_ns = KTIME_MAX,
.min_delta_ticks = 1,
- .max_delta_ticks = KTIME_MAX,
+ .max_delta_ticks = ULONG_MAX,
.mult = 1,
.shift = 0,
.cpumask = cpu_all_mask,
@@ -102,9 +102,11 @@ static enum hrtimer_restart bc_handler(struct hrtimer *t)
return HRTIMER_RESTART;
}

+#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT)
void tick_setup_hrtimer_broadcast(void)
{
hrtimer_init(&bctimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
bctimer.function = bc_handler;
clockevents_register_device(&ce_broadcast_hrtimer);
}
+#endif

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