From: Peter Zijlstra <peterz@infradead.org>
To: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Juergen Gross <jgross@suse.com>,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
mhocko@suse.com, Jonathan Corbet <corbet@lwn.net>
Subject: Re: [PATCH 3/3] kernel/smp: add more data to CSD lock debugging
Date: Mon, 1 Mar 2021 16:45:39 +0100 [thread overview]
Message-ID: <YD0MI1Cye+YbOov3@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20210301000704.GF2696@paulmck-ThinkPad-P72>
On Sun, Feb 28, 2021 at 04:07:04PM -0800, Paul E. McKenney wrote:
> On Fri, Feb 26, 2021 at 10:05:51PM +0100, Peter Zijlstra wrote:
> > On Fri, Feb 26, 2021 at 10:12:05AM -0800, Paul E. McKenney wrote:
> > > On Fri, Feb 26, 2021 at 05:38:44PM +0100, Peter Zijlstra wrote:
> > > >
> > > > I hate all of this, but if this will finally catch the actual problem,
> > > > we can then revert all this, so sure.
> > >
> > > OK, I will bite... What exactly do you hate about it?
> >
> > It's ugly and messy. We're basically commiting a debug session. Normally
> > gunk like this is done in private trees, then we find the problem and
> > fix that and crap like this never sees the light of day.
>
> Is your hatred due to the presence of debug code at all, or a belief that
> this code is unlikely to be useful in any subsequent IPI-related bug hunt?
The clutter, mostly I think. There's a lot of debug sprinkled about.
next prev parent reply other threads:[~2021-03-01 15:47 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 11:25 [PATCH 0/3] kernel/smp.c: add more CSD lock debugging Juergen Gross
2021-02-26 11:25 ` [PATCH 1/3] kernel/smp: add boot parameter for controlling " Juergen Gross
2021-02-26 11:25 ` [PATCH 2/3] kernel/smp: prepare more " Juergen Gross
2021-02-26 11:25 ` [PATCH 3/3] kernel/smp: add more data to " Juergen Gross
2021-02-26 16:38 ` Peter Zijlstra
2021-02-26 18:12 ` Paul E. McKenney
2021-02-26 21:05 ` Peter Zijlstra
2021-03-01 0:07 ` Paul E. McKenney
2021-03-01 15:45 ` Peter Zijlstra [this message]
2021-03-01 15:53 ` Jürgen Groß
2021-03-01 16:45 ` Paul E. McKenney
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