Re: [PATCH] sched/core: Fix stale se.load when modifying nice value under sched_ext

[liwanwu9113 <liwanwu9113@163.com>]

Hello Prateek,

Thank you for your reply and correction.

I was not aware that this problem had already been addressed by another 
patch. I appreciate you taking the time to share this information. 
Please consider my patch withdrawn.

Thank you again for your guidance.

Best regards,
Wanwu Li

On 2026/7/14 17:30, K Prateek Nayak wrote:
> Hello Wanwu,
> 
> On 7/14/2026 2:43 PM, Wanwu Li wrote:
>> [You don't often get email from liwanwu9113@163.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
>>
>> From: Wanwu Li <liwanwu@kylinos.cn>
>>
>> When a task's nice value is modified while running under sched_ext
>> scheduling class, set_load_weight() calls reweight_task() which only
>> updates static_prio but leaves p->se.load unchanged because sched_ext
>> does not use it. After switching back to CFS, the stale se.load leads
>> to incorrect load weight calculation.
>>
>> Fix this by explicitly refreshing p->se.load for sched_ext tasks after
>> calling reweight_task().
>>
>> Fixes: d32960528702 ("sched/fair: set_load_weight() must also call reweight_task() for SCHED_IDLE tasks")
>> Signed-off-by: Wanwu Li <liwanwu@kylinos.cn>
> 
> Isn't this solved in
> https://lore.kernel.org/lkml/20260528131238.3879110-1-quzicheng315@gmail.com/
>