linux-kernel - Re: [PATCH V9 16/24] LoongArch: Add misc common routines

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Date:   Sat, 30 Apr 2022 18:00:50 +0800
From:   Huacai Chen <chenhuacai@...il.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Huacai Chen <chenhuacai@...ngson.cn>,
        Andy Lutomirski <luto@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Airlie <airlied@...ux.ie>,
        Jonathan Corbet <corbet@....net>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Xuefeng Li <lixuefeng@...ngson.cn>,
        Yanteng Si <siyanteng@...ngson.cn>,
        Guo Ren <guoren@...nel.org>, Xuerui Wang <kernel@...0n.name>,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: Re: [PATCH V9 16/24] LoongArch: Add misc common routines

Hi, Arnd,

On Sat, Apr 30, 2022 at 5:50 PM Arnd Bergmann <arnd@...db.de> wrote:
>
> On Sat, Apr 30, 2022 at 11:05 AM Huacai Chen <chenhuacai@...ngson.cn> wrote:
>
> > +unsigned long __xchg_small(volatile void *ptr, unsigned long val, unsigned int size)
> > +{
> > +       u32 old32, mask, temp;
> > +       volatile u32 *ptr32;
> > +       unsigned int shift;
> > +
> > +       /* Check that ptr is naturally aligned */
>
> As discussed, please remove this function and all the references to it.
It seems that "generic ticket spinlock" hasn't been merged in 5.18?

Huacai
>
>       Arnd