linux-kernel - Re: [PATCH v3 18/22] asm-generic/atomic: Use __always

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Message-ID: <20200219170609.GN18400@hirez.programming.kicks-ass.net>
Date:   Wed, 19 Feb 2020 18:06:09 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        rostedt@...dmis.org, mingo@...nel.org, joel@...lfernandes.org,
        gregkh@...uxfoundation.org, gustavo@...eddedor.com,
        tglx@...utronix.de, josh@...htriplett.org,
        mathieu.desnoyers@...icios.com, jiangshanlai@...il.com,
        luto@...nel.org, tony.luck@...el.com, frederic@...nel.org,
        dan.carpenter@...cle.com, mhiramat@...nel.org,
        Mark Rutland <mark.rutland@....com>,
        Marco Elver <elver@...gle.com>
Subject: Re: [PATCH v3 18/22] asm-generic/atomic: Use __always_inline for
 fallback wrappers

On Wed, Feb 19, 2020 at 08:55:21AM -0800, Paul E. McKenney wrote:
> On Wed, Feb 19, 2020 at 03:47:42PM +0100, Peter Zijlstra wrote:
> > While the fallback wrappers aren't pure wrappers, they are trivial
> > nonetheless, and the function they wrap should determine the final
> > inlining policy.
> > 
> > For x86 tinyconfig we observe:
> >  - vmlinux baseline: 1315988
> >  - vmlinux with patch: 1315928 (-60 bytes)
> > 
> > Suggested-by: Mark Rutland <mark.rutland@....com>
> > Signed-off-by: Marco Elver <elver@...gle.com>
> > Acked-by: Mark Rutland <mark.rutland@....com>
> > Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
> 
> And this one and the previous one are also already in -tip, FYI.

That's where I found them ;-) Stole them from tip/locking/kcsan.