linux-kernel - Re: locking/atomic: Introduce atomic_try

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Message-ID: <CA+55aFxhdJTRwCQUissDm24k4B-sLL0mi-92v93giJqfVFke6Q@mail.gmail.com>
Date:   Sat, 25 Mar 2017 15:08:10 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Andy Lutomirski <luto@...capital.net>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Lutomirski <luto@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Brian Gerst <brgerst@...il.com>,
        Denys Vlasenko <dvlasenk@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Paul McKenney <paulmck@...ux.vnet.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: locking/atomic: Introduce atomic_try_cmpxchg()

On Sat, Mar 25, 2017 at 2:13 PM, Peter Zijlstra <peterz@...radead.org> wrote:
> On Sat, Mar 25, 2017 at 11:34:32AM -0700, Linus Torvalds wrote:
>>
>> Oh, I just noticed that at least your other one didn't mark "success"
>> as being likely.
>
> 10730509        4540256  843776 16114541         f5e36d defconfig-build/vmlinux

Ok, that seems to be the exact same size as with the patch using the
"goto label" approach. So maybe the code generation is the same now.

              Linus