diff options
| author | Dmitry Torokhov <dtor@insightbb.com> | 2007-05-01 00:24:54 -0400 |
|---|---|---|
| committer | Dmitry Torokhov <dtor@insightbb.com> | 2007-05-01 00:24:54 -0400 |
| commit | bc95f3669f5e6f63cf0b84fe4922c3c6dd4aa775 (patch) | |
| tree | 427fcf2a7287c16d4b5aa6cbf494d59579a6a8b1 /kernel/time/tick-sched.c | |
| parent | 3d29cdff999c37b3876082278a8134a0642a02cd (diff) | |
| parent | dc87c3985e9b442c60994308a96f887579addc39 (diff) | |
Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
drivers/usb/input/Makefile
drivers/usb/input/gtco.c
Diffstat (limited to 'kernel/time/tick-sched.c')
| -rw-r--r-- | kernel/time/tick-sched.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 95e41f7f850b..51556b95f60f 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -21,6 +21,8 @@ #include <linux/sched.h> #include <linux/tick.h> +#include <asm/irq_regs.h> + #include "tick-internal.h" /* @@ -165,7 +167,9 @@ void tick_nohz_stop_sched_tick(void) goto end; cpu = smp_processor_id(); - BUG_ON(local_softirq_pending()); + if (unlikely(local_softirq_pending())) + printk(KERN_ERR "NOHZ: local_softirq_pending %02x\n", + local_softirq_pending()); now = ktime_get(); /* @@ -191,19 +195,19 @@ void tick_nohz_stop_sched_tick(void) next_jiffies = get_next_timer_interrupt(last_jiffies); delta_jiffies = next_jiffies - last_jiffies; + if (rcu_needs_cpu(cpu)) + delta_jiffies = 1; /* * Do not stop the tick, if we are only one off * or if the cpu is required for rcu */ - if (!ts->tick_stopped && (delta_jiffies == 1 || rcu_needs_cpu(cpu))) + if (!ts->tick_stopped && delta_jiffies == 1) goto out; /* Schedule the tick, if we are at least one jiffie off */ if ((long)delta_jiffies >= 1) { - if (rcu_needs_cpu(cpu)) - delta_jiffies = 1; - else + if (delta_jiffies > 1) cpu_set(cpu, nohz_cpu_mask); /* * nohz_stop_sched_tick can be called several times before |