linux-kernel - Re: smp_call_function

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Message-ID: <CA+55aFycvNk7YSLLZJX1VNuVsDz+siLaNM4JHYCMCrSqXv41xQ@mail.gmail.com>
Date:	Fri, 20 Mar 2015 09:26:30 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Rafael David Tinoco <inaddy@...ntu.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jens Axboe <axboe@...nel.dk>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: smp_call_function_single lockups

On Fri, Mar 20, 2015 at 3:15 AM, Peter Zijlstra <peterz@...radead.org> wrote:
>
> Linus, any plans for this patch? I think it does solve a fair few issues
> the current code has.

So I didn't really have any plans. I think it's a good patch, and it
might even fix a bug and improve code generation, but it didn't fix
the lockup problem, so..

> do you want me to route it through tip (and write a changelog while I'm
> at it) or will you be taking it yourself?

If you think it's worth committing, then go ahead.  Add my signed-off,
although I have to note that I didn't do a lot of testing of that
patch (I think it was compile-tested when I sent it out, and then I
ended up running it for a while, and obviously it got *some* testing
by the person who saw the lockup that just showed that it didn't fix
the problem ;(

                              Linus
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