linux-kernel - Re: [RFC 2/2] timers: Make sure irq_work is handled when no pending timers

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Date:   Tue, 22 Jun 2021 19:42:54 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Nicolas Saenz Julienne <nsaenzju@...hat.com>,
        linux-rt-users@...r.kernel.org, frederic@...nel.org,
        mtosatti@...hat.com, LKML <linux-kernel@...r.kernel.org>,
        Jiri Olsa <jolsa@...nel.org>
Subject: Re: [RFC 2/2] timers: Make sure irq_work is handled when no pending
 timers

On Tue, Jun 22, 2021 at 07:33:23PM +0200, Jiri Olsa wrote:
> On Tue, Jun 22, 2021 at 03:44:23PM +0200, Peter Zijlstra wrote:
> > On Sat, Jun 19, 2021 at 12:47:04AM +0200, Thomas Gleixner wrote:
> > > There are two solutions:
> > > 
> > >   1) Create a IRQ_WORK softirq and raise that
> > > 
> > >   2) Simply delegate it to a workqueue
> > 
> > IIRC someone was looking to stick the whole thing in a kthread_worker.
> > Jiri, was that you?
> > 
> 
> yep, I still plan on doing that

hum, IIRC that was actually perf specific change we discussed some
time ago I should have read the whole thread before answering

I'll check what was my plan to do and get back ;-)

jirka