linux-kernel - Re: [External] Re: [PATCH] tasklet: Introduce tasklet tracepoints

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Message-ID: <CAMZfGtXG8Bn2SosdVKNxw2t0JW_ej-Oc4Lg-bGV59tDN7kNrfg@mail.gmail.com>
Date:   Fri, 25 Sep 2020 10:47:43 +0800
From:   Muchun Song <songmuchun@...edance.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Will Deacon <will@...nel.org>, romain.perier@...il.com,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [External] Re: [PATCH] tasklet: Introduce tasklet tracepoints

On Fri, Sep 25, 2020 at 1:59 AM Thomas Gleixner <tglx@...utronix.de> wrote:
>
> On Sat, Sep 05 2020 at 14:04, Muchun Song wrote:
>
> > Introduce tracepoints for tasklets just like softirq does.
>
> What does softirq?

I mean that the softirq has tracepoints and the tasklet may
also be needed.

>
> > In this case, we can calculate tasklet latency and know what tasklet
> > run.
>
> I rather see people working on removal of tasklets.

I do not know about this, why do we remove the tasklet?

>
> Thanks,
>
>         tglx

Thanks.

-- 
Yours,
Muchun