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Message-ID: <CAFULd4YByT++kV21nZGE+ME9B2KQtQYNRz6Ar2awoLws-JznUw@mail.gmail.com>
Date:   Mon, 7 Aug 2023 18:36:24 +0200
From:   Uros Bizjak <ubizjak@...il.com>
To:     Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     "loongarch@...ts.linux.dev" <loongarch@...ts.linux.dev>,
        "linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Will Deacon <will@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Richard Henderson <richard.henderson@...aro.org>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Matt Turner <mattst88@...il.com>,
        Huacai Chen <chenhuacai@...nel.org>,
        WANG Xuerui <kernel@...0n.name>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        Jun Yi <yijun@...ngson.cn>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH] locking/arch: Rewrite local_add_unless as static inline function

On Mon, Aug 7, 2023 at 6:13 PM Christophe Leroy
<christophe.leroy@...roup.eu> wrote:
>
>
>
> Le 31/07/2023 à 10:42, Uros Bizjak a écrit :
> > Rewrite local_add_unless as a static inline function with boolean
> > return value, similar to arch_atomic_add_unless arch fallbacks.
> >
> > The function is currently unused.
>
> Is it worth keeping the function if it is not used ?

We already have plenty of these kinds of unused locking functions in
arch/*/include/asm/atomic.h, so I thought we could leave this one as
well.

Uros.

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