Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull UP timer fix from Thomas Gleixner:
"Work around the for_each_cpu() oddity on UP kernels in the tick
broadcast code which causes boot failures because the CPU0 bit is
always reported as set independent of the cpumask content"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tick/broadcast: Use for_each_cpu() specially on UP kernels
+8
+8
kernel/time/tick-broadcast.c
+8
kernel/time/tick-broadcast.c
···
612
612
now = ktime_get();
613
613
/* Find all expired events */
614
614
for_each_cpu(cpu, tick_broadcast_oneshot_mask) {
615
+
/*
616
+
* Required for !SMP because for_each_cpu() reports
617
+
* unconditionally CPU0 as set on UP kernels.
618
+
*/
619
+
if (!IS_ENABLED(CONFIG_SMP) &&
620
+
cpumask_empty(tick_broadcast_oneshot_mask))
621
+
break;
622
+
615
623
td = &per_cpu(tick_cpu_device, cpu);
616
624
if (td->evtdev->next_event <= now) {
617
625
cpumask_set_cpu(cpu, tmpmask);