[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <CAMuHMdW6zi+ZO_xC7jvi_cy5u2mydui1sCDE2pdpCoFmfBLWug@mail.gmail.com>
Date: Thu, 18 Apr 2024 10:04:55 +0200
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: "Paul E. McKenney" <paulmck@...nel.org>
Cc: linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org, elver@...gle.com,
akpm@...ux-foundation.org, tglx@...utronix.de, peterz@...radead.org,
dianders@...omium.org, pmladek@...e.com, torvalds@...ux-foundation.org,
Arnd Bergmann <arnd@...db.de>, Andi Shyti <andi.shyti@...ux.intel.com>,
Palmer Dabbelt <palmer@...osinc.com>, Masami Hiramatsu <mhiramat@...nel.org>, linux-sh@...r.kernel.org
Subject: Re: [PATCH cmpxchg 12/14] sh: Emulate one-byte cmpxchg
Hi Paul,
On Mon, Apr 8, 2024 at 7:50 PM Paul E. McKenney <paulmck@...nel.org> wrote:
> Use the new cmpxchg_emu_u8() to emulate one-byte cmpxchg() on sh.
>
> [ paulmck: Drop two-byte support per Arnd Bergmann feedback. ]
>
> Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
Thanks for your patch!
> --- a/arch/sh/include/asm/cmpxchg.h
> +++ b/arch/sh/include/asm/cmpxchg.h
> @@ -56,6 +56,8 @@ static inline unsigned long __cmpxchg(volatile void * ptr, unsigned long old,
> unsigned long new, int size)
> {
> switch (size) {
> + case 1:
> + return cmpxchg_emu_u8((volatile u8 *)ptr, old, new);
The cast is not needed.
> case 4:
> return __cmpxchg_u32(ptr, old, new);
> }
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68korg
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
Powered by blists - more mailing lists