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| author | Ingo Molnar <mingo@elte.hu> | 2007-07-21 04:37:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-21 17:49:15 -0700 |
| commit | 820de5c39ef7f6866d2c9e6c7d208bcd2a6e1942 (patch) | |
| tree | be28af991bb9fa26ece3ffb44b01c7038aa70fa4 /kernel/hrtimer.c | |
| parent | 3704540b48295253bd9c87a5e7ff545f9d47a3b8 (diff) | |
| download | lwn-820de5c39ef7f6866d2c9e6c7d208bcd2a6e1942.tar.gz lwn-820de5c39ef7f6866d2c9e6c7d208bcd2a6e1942.zip | |
highres: improve debug output
Add some more debug information to the hrtimer and clock events code.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/hrtimer.c')
| -rw-r--r-- | kernel/hrtimer.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 72d034258ba1..065a89786628 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; |