On Sat, Dec 12, 2020 at 01:16:12AM +0100, Thomas Gleixner wrote:
> On Fri, Dec 11 2020 at 23:21, Frederic Weisbecker wrote:
> > On Sun, Dec 06, 2020 at 10:12:54PM +0100, Thomas Gleixner wrote:
> >> tick_handover_do_timer() which is invoked when a CPU is unplugged has a
> >> @@ -407,17 +407,13 @@ EX
On Fri, Dec 11 2020 at 23:21, Frederic Weisbecker wrote:
> On Sun, Dec 06, 2020 at 10:12:54PM +0100, Thomas Gleixner wrote:
>> tick_handover_do_timer() which is invoked when a CPU is unplugged has a
>> @@ -407,17 +407,13 @@ EXPORT_SYMBOL_GPL(tick_broadcast_oneshot
>> /*
>> * Transfer the do_time
On Sun, Dec 06, 2020 at 10:12:54PM +0100, Thomas Gleixner wrote:
> tick_handover_do_timer() which is invoked when a CPU is unplugged has a
> check for cpumask_first(cpu_online_mask) when it tries to hand over the
> tick update duty.
>
> Checking the result of cpumask_first() there is pointless bec
On Sun, Dec 06, 2020 at 10:12:54PM +0100, Thomas Gleixner wrote:
> tick_handover_do_timer() which is invoked when a CPU is unplugged has a
> check for cpumask_first(cpu_online_mask) when it tries to hand over the
> tick update duty.
>
> Checking the result of cpumask_first() there is pointless bec
On Mon, Dec 07 2020 at 12:59, Peter Zijlstra wrote:
> On Sun, Dec 06, 2020 at 10:12:54PM +0100, Thomas Gleixner wrote:
>
>> void tick_handover_do_timer(void)
>> {
>> +if (tick_do_timer_cpu == smp_processor_id())
>> +tick_do_timer_cpu = cpumask_first(cpu_online_mask);
>
> For the p
On Sun, Dec 06, 2020 at 10:12:54PM +0100, Thomas Gleixner wrote:
> void tick_handover_do_timer(void)
> {
> + if (tick_do_timer_cpu == smp_processor_id())
> + tick_do_timer_cpu = cpumask_first(cpu_online_mask);
For the paranoid amongst us, would it make sense to add something lik
tick_handover_do_timer() which is invoked when a CPU is unplugged has a
check for cpumask_first(cpu_online_mask) when it tries to hand over the
tick update duty.
Checking the result of cpumask_first() there is pointless because if the
online mask is empty at this point, then this would be the last
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