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authorVenki Pallipadi <venkatesh.pallipadi@intel.com>2007-10-12 17:04:23 -0400
committerThomas Gleixner <tglx@inhelltoy.tec.linutronix.de>2007-10-12 17:04:23 -0400
commit4a93232dab0a07074bcc5291a0f1f39919916f31 (patch)
tree34dbc3209474b2cf5065726dd295c25584f4ce6a /kernel/time/tick-broadcast.c
parent31c435d75e7d15a5f965c5eb0e33fe0e236f49a4 (diff)
clock events: allow replacement of broadcast timer
Change the broadcast timer, if a timer with higher rating becomes available. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time/tick-broadcast.c')
-rw-r--r--kernel/time/tick-broadcast.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index acf15b49e55b..298bc7c6f09f 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -64,8 +64,9 @@ static void tick_broadcast_start_periodic(struct clock_event_device *bc)
64 */ 64 */
65int tick_check_broadcast_device(struct clock_event_device *dev) 65int tick_check_broadcast_device(struct clock_event_device *dev)
66{ 66{
67 if (tick_broadcast_device.evtdev || 67 if ((tick_broadcast_device.evtdev &&
68 (dev->features & CLOCK_EVT_FEAT_C3STOP)) 68 tick_broadcast_device.evtdev->rating >= dev->rating) ||
69 (dev->features & CLOCK_EVT_FEAT_C3STOP))
69 return 0; 70 return 0;
70 71
71 clockevents_exchange_device(NULL, dev); 72 clockevents_exchange_device(NULL, dev);
@@ -513,11 +514,9 @@ static void tick_broadcast_clear_oneshot(int cpu)
513 */ 514 */
514void tick_broadcast_setup_oneshot(struct clock_event_device *bc) 515void tick_broadcast_setup_oneshot(struct clock_event_device *bc)
515{ 516{
516 if (bc->mode != CLOCK_EVT_MODE_ONESHOT) { 517 bc->event_handler = tick_handle_oneshot_broadcast;
517 bc->event_handler = tick_handle_oneshot_broadcast; 518 clockevents_set_mode(bc, CLOCK_EVT_MODE_ONESHOT);
518 clockevents_set_mode(bc, CLOCK_EVT_MODE_ONESHOT); 519 bc->next_event.tv64 = KTIME_MAX;
519 bc->next_event.tv64 = KTIME_MAX;
520 }
521} 520}
522 521
523/* 522/*