diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/hrtimer.c | 5 | ||||
| -rw-r--r-- | kernel/time/tick-oneshot.c | 15 |
2 files changed, 18 insertions, 2 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 72d0342..065a897 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -558,7 +558,8 @@ static inline int hrtimer_enqueue_reprogram(struct hrtimer *timer, */ static int hrtimer_switch_to_hres(void) { - struct hrtimer_cpu_base *base = &__get_cpu_var(hrtimer_bases); + int cpu = smp_processor_id(); + struct hrtimer_cpu_base *base = &per_cpu(hrtimer_bases, cpu); unsigned long flags; if (base->hres_active) @@ -568,6 +569,8 @@ static int hrtimer_switch_to_hres(void) if (tick_init_highres()) { local_irq_restore(flags); + printk(KERN_WARNING "Could not switch to high resolution " + "mode on CPU %d\n", cpu); return 0; } base->hres_active = 1; diff --git a/kernel/time/tick-oneshot.c b/kernel/time/tick-oneshot.c index f6997ab..0258d31 100644 --- a/kernel/time/tick-oneshot.c +++ b/kernel/time/tick-oneshot.c @@ -73,8 +73,21 @@ int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *)) struct clock_event_device *dev = td->evtdev; if (!dev || !(dev->features & CLOCK_EVT_FEAT_ONESHOT) || - !tick_device_is_functional(dev)) + !tick_device_is_functional(dev)) { + + printk(KERN_INFO "Clockevents: " + "could not switch to one-shot mode:"); + if (!dev) { + printk(" no tick device\n"); + } else { + if (!tick_device_is_functional(dev)) + printk(" %s is not functional.\n", dev->name); + else + printk(" %s does not support one-shot mode.\n", + dev->name); + } return -EINVAL; + } td->mode = TICKDEV_MODE_ONESHOT; dev->event_handler = handler; |
