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| author |   Venki Pallipadi <venkatesh.pallipadi@intel.com> | 2007-10-12 23:04:23 +0200 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@inhelltoy.tec.linutronix.de> | 2007-10-12 23:04:23 +0200 |
| commit | 4a93232dab0a07074bcc5291a0f1f39919916f31 (patch) | |
| tree | 34dbc3209474b2cf5065726dd295c25584f4ce6a /kernel | |
| parent | i386/x8664: cleanup the shared hpet code (diff) | |
| download | linux-dev-4a93232dab0a07074bcc5291a0f1f39919916f31.tar.xz linux-dev-4a93232dab0a07074bcc5291a0f1f39919916f31.zip | |
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')
| -rw-r--r-- | kernel/time/tick-broadcast.c | 13 | ||||
| -rw-r--r-- | kernel/time/tick-common.c | 4 |
2 files changed, 8 insertions, 9 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) */ int tick_check_broadcast_device(struct clock_event_device *dev) { - if (tick_broadcast_device.evtdev || - (dev->features & CLOCK_EVT_FEAT_C3STOP)) + if ((tick_broadcast_device.evtdev && + tick_broadcast_device.evtdev->rating >= dev->rating) || + (dev->features & CLOCK_EVT_FEAT_C3STOP)) return 0; clockevents_exchange_device(NULL, dev); @@ -513,11 +514,9 @@ static void tick_broadcast_clear_oneshot(int cpu) */ void tick_broadcast_setup_oneshot(struct clock_event_device *bc) { - if (bc->mode != CLOCK_EVT_MODE_ONESHOT) { - bc->event_handler = tick_handle_oneshot_broadcast; - clockevents_set_mode(bc, CLOCK_EVT_MODE_ONESHOT); - bc->next_event.tv64 = KTIME_MAX; - } + bc->event_handler = tick_handle_oneshot_broadcast; + clockevents_set_mode(bc, CLOCK_EVT_MODE_ONESHOT); + bc->next_event.tv64 = KTIME_MAX; } /* diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c index 77a21abc8716..3f3ae3907830 100644 --- a/kernel/time/tick-common.c +++ b/kernel/time/tick-common.c @@ -200,7 +200,7 @@ static int tick_check_new_device(struct clock_event_device *newdev) cpu = smp_processor_id(); if (!cpu_isset(cpu, newdev->cpumask)) - goto out; + goto out_bc; td = &per_cpu(tick_cpu_device, cpu); curdev = td->evtdev; @@ -265,7 +265,7 @@ out_bc: */ if (tick_check_broadcast_device(newdev)) ret = NOTIFY_STOP; -out: + spin_unlock_irqrestore(&tick_device_lock, flags); return ret; |