On Sun, Apr 4, 2021 at 3:32 AM Alexey Klimov wrote:
>
> On Sat, Mar 27, 2021 at 9:01 PM Thomas Gleixner wrote:
[...]
Now, the patch:
>> Subject: cpu/hotplug: Cure the cpusets trainwreck
>> From: Thomas Gleixner
>> Date: Sat, 27 Mar 2021 15:57:29 +0100
>>
>> Alexey and Joshua tried to solve a
On Sat, Mar 27, 2021 at 9:01 PM Thomas Gleixner wrote:
Lovely that you eventually found time to take a look at this since
first RFC patch was sent.
> Alexey,
>
> On Wed, Mar 17 2021 at 00:36, Alexey Klimov wrote:
> > When a CPU offlined and onlined via device_offline() and device_online()
> >
On 03/27/21 22:01, Thomas Gleixner wrote:
> And while you carefully reworded the comment, did you actually read what
> it said and what is says now?
>
> > -* cpu_down() which takes cpu maps lock. cpu maps lock
> > -* needs to be held as this might race against in kernel
>
Alexey,
On Wed, Mar 17 2021 at 00:36, Alexey Klimov wrote:
> When a CPU offlined and onlined via device_offline() and device_online()
> the userspace gets uevent notification. If, after receiving "online" uevent,
> userspace executes sched_setaffinity() on some task trying to move it
> to a
Alexey Klimov writes:
> When a CPU offlined and onlined via device_offline() and device_online()
> the userspace gets uevent notification. If, after receiving "online" uevent,
> userspace executes sched_setaffinity() on some task trying to move it
> to a recently onlined CPU, then it sometimes
When a CPU offlined and onlined via device_offline() and device_online()
the userspace gets uevent notification. If, after receiving "online" uevent,
userspace executes sched_setaffinity() on some task trying to move it
to a recently onlined CPU, then it sometimes fails with -EINVAL. Userspace
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