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Message-ID: <CANn89iL0EYuGASWaXPwKN+E6mZvFicbDKOoZVA8N+BXFQV7e2A@mail.gmail.com>
Date: Tue, 10 Jan 2023 10:29:20 +0100
From: Eric Dumazet <edumazet@...gle.com>
To: 李哲 <sensor1010@....com>,
Wei Wang <weiwan@...gle.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
bigeasy@...utronix.de, imagedong@...cent.com, kuniyu@...zon.com,
petrm@...dia.com, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] net/dev.c : Remove redundant state settings after
waking up
On Tue, Jan 10, 2023 at 10:15 AM 李哲 <sensor1010@....com> wrote:
>
> the task status has been set to TASK_RUNNING in shcedule(),
> no need to set again here
Changelog is rather confusing, this does not match the patch, which
removes one set_current_state(TASK_INTERRUPTIBLE);
TASK_INTERRUPTIBLE != TASK_RUNNING
Patch itself looks okay (but has nothing to do with thread state after
schedule()),
you should have CC Wei Wang because she
authored commit cb038357937e net: fix race between napi kthread mode
and busy poll
>
> Signed-off-by: 李哲 <sensor1010@....com>
> ---
> net/core/dev.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/net/core/dev.c b/net/core/dev.c
> index b76fb37b381e..4bd2d4b954c9 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -6580,7 +6580,6 @@ static int napi_thread_wait(struct napi_struct *napi)
> schedule();
> /* woken being true indicates this thread owns this napi. */
> woken = true;
> - set_current_state(TASK_INTERRUPTIBLE);
> }
> __set_current_state(TASK_RUNNING);
>
> --
> 2.17.1
>
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