[PATCH v2 2/3] powerpc/rtas: allow rescheduling while changing cpu states

[Nathan Lynch]

Gautham R Shenoy <ego.lkml at gmail.com> writes:

> On Sat, Aug 3, 2019 at 1:03 AM Nathan Lynch <nathanl at linux.ibm.com> wrote:
>>
>> rtas_cpu_state_change_mask() potentially operates on scores of cpus,
>> so explicitly allow rescheduling in the loop body.
>>
>
> Are we seeing softlockups/rcu stalls while running this ?

I have not seen a report yet, but since the loop is bound only by the
number of processors in the LPAR I suspect it's only a matter of time.

> Reviewed-by: Gautham R. Shenoy <ego at linux.vnet.ibm.com>

Thanks!