linux-kernel - Re: [PATCH V7 4/4] softirq: Allow early break the softirq processing loop

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Message-ID: <CAKc596KNqQg+EOu=dkbXnZYHw3011dvkWx6Y-PXnK_wDehfeZg@mail.gmail.com>
Date:   Mon, 28 Sep 2020 19:15:50 +0800
From:   jun qian <qianjun.kernel@...il.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>, will@...nel.org,
        luto@...nel.org, linux-kernel@...r.kernel.org,
        Yafang Shao <laoar.shao@...il.com>, qais.yousef@....com,
        Uladzislau Rezki <urezki@...il.com>, frederic@...nel.org
Subject: Re: [PATCH V7 4/4] softirq: Allow early break the softirq processing loop

Peter Zijlstra <peterz@...radead.org> 于2020年9月28日周一 下午5:20写道：
>
> On Tue, Sep 15, 2020 at 07:56:09PM +0800, qianjun.kernel@...il.com wrote:
> > From: jun qian <qianjun.kernel@...il.com>
> >
> > Allow terminating the softirq processing loop without finishing the vectors.
> >
> > Signed-off-by: jun qian <qianjun.kernel@...il.com>
> > ---
> >  kernel/softirq.c | 113 ++++++++++++++++++++++++++++++++++++++++++++-----------
> >  1 file changed, 91 insertions(+), 22 deletions(-)
>
> This is still a ginormous patch for something that should be simple.
>

Yes, i think so. Because of the left pending bits need to be processed,
the code is going to be not simple.I will try my best to simplify this process.

> I've put my patches (and a bunch on top) in:
>
>   git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git core/softirq
>
> but got a fairly significant regression report from 0day on that, and
> haven't had time/motivation to look at that.
>

OK, I am trying to slove the significant regression problem, maybe it
needs some time.

thanks

>