On 11/15/2017 10:35 PM, Tejun Heo wrote:
> On Wed, Nov 15, 2017 at 11:37:42AM +0100, Peter Zijlstra wrote:
>> On Wed, Nov 15, 2017 at 03:56:26PM +0530, Prateek Sood wrote:
>>> Any improvement/suggestion for this patch?
>>
>> I would have done 2 patches, the first one solving the locking issue,
>> t
On Wed, Nov 15, 2017 at 11:37:42AM +0100, Peter Zijlstra wrote:
> On Wed, Nov 15, 2017 at 03:56:26PM +0530, Prateek Sood wrote:
> > Any improvement/suggestion for this patch?
>
> I would have done 2 patches, the first one solving the locking issue,
> the second removing the then redundant async re
On Wed, Nov 15, 2017 at 03:56:26PM +0530, Prateek Sood wrote:
> Any improvement/suggestion for this patch?
I would have done 2 patches, the first one solving the locking issue,
the second removing the then redundant async rebuild stuff.
Other than that this looks OK I suppose, but I was expecting
On 10/30/2017 12:46 PM, Prateek Sood wrote:
> Remove circular dependency deadlock in a scenario where hotplug of CPU is
> being done while there is updation in cgroup and cpuset triggered from
> userspace.
>
> Process A => kthreadd => Process B => Process C => Process A
>
> Process A
> cpu_subsys
On 10/30/2017 12:46 PM, Prateek Sood wrote:
> Remove circular dependency deadlock in a scenario where hotplug of CPU is
> being done while there is updation in cgroup and cpuset triggered from
> userspace.
>
> Process A => kthreadd => Process B => Process C => Process A
>
> Process A
> cpu_subsys
Remove circular dependency deadlock in a scenario where hotplug of CPU is
being done while there is updation in cgroup and cpuset triggered from
userspace.
Process A => kthreadd => Process B => Process C => Process A
Process A
cpu_subsys_offline();
cpu_down();
_cpu_down();
percpu_down
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