Re:Re: [PATCH] futex: use wake_up_process() instead of wake_up_state()

From: 王擎
Date: Fri Mar 19 2021 - 05:16:55 EST



>> On Fri, 2021-03-19 at 10:59 +0800, Wang Qing wrote:
>> > Using wake_up_process() is more simpler and friendly,
>> > and it is more convenient for analysis and statistics
>>
>> I likely needn't bother, and don't have a NAK to paste on this thing,
>> but here's another copy of my NOPE for yet another gratuitous change
>> with complete BS justification.
>
>Let me try a bit softer tone. I think you're trying to help, but
>ignoring feedback is not the way to achieve that goal. My feedback was
>and remains that your change is not an improvement, it's churn, but
>more importantly, that changes require technical justification, which
>you did not provide. You were subsequently handed the justification
>you lacked by none other than the maintainer of the code you were
>modifying. He told you that your change could become a tiny kernel
>size optimization by converting like instances all in one patch.. which
>you promptly ignored, instead submitting multiple patches with zero
>justification. That is not the path to success.

Thank you for your reply. There are two reasons for sending patch again.
One is that I think this is only an improvement in format and has no
substantial impact, so no verification is required.
The second one is that I want to hear more opinions from the maintainer.
Because the entire kernel may have similar problems, I have to figure out
whether this is a tacit behavior.
Also, I don't understand what you mean by "your change could become a
tiny kernel size optimization by converting like instances all in one patch".

Thanks,
WangQing.

>
>>
>> >
>> > Signed-off-by: Wang Qing <wangqing@xxxxxxxx>
>> > ---
>> > kernel/futex.c | 2 +-
>> > 1 file changed, 1 insertion(+), 1 deletion(-)
>> >
>> > diff --git a/kernel/futex.c b/kernel/futex.c
>> > index e68db77..078a1f9
>> > --- a/kernel/futex.c
>> > +++ b/kernel/futex.c
>> > @@ -1820,7 +1820,7 @@ void requeue_pi_wake_futex(struct futex_q *q, union futex_key *key,
>> >
>> > q->lock_ptr = &hb->lock;
>> >
>> > - wake_up_state(q->task, TASK_NORMAL);
>> > + wake_up_process(q->task);
>> > }
>> >
>> > /**
>>
>