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

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Message-ID: <20200928092039.GB2628@hirez.programming.kicks-ass.net>
Date:   Mon, 28 Sep 2020 11:20:39 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     qianjun.kernel@...il.com
Cc:     tglx@...utronix.de, will@...nel.org, luto@...nel.org,
        linux-kernel@...r.kernel.org, laoar.shao@...il.com,
        qais.yousef@....com, urezki@...il.com, frederic@...nel.org
Subject: Re: [PATCH V7 4/4] softirq: Allow early break the softirq processing
 loop

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.

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.