Re: [PATCH RESEND v7 4/6] arm64: futex: refactor futex atomic operation

Catalin Marinas
2025-09-12T16:53:58Z

On Sat, Aug 16, 2025 at 04:19:27PM +0100, Yeoreum Yun wrote:
> diff --git a/arch/arm64/include/asm/futex.h b/arch/arm64/include/asm/futex.h
> index bc06691d2062..ab7003cb4724 100644
> --- a/arch/arm64/include/asm/futex.h
> +++ b/arch/arm64/include/asm/futex.h
> @@ -7,17 +7,21 @@
>
> #include <linux/futex.h>
> #include <linux/uaccess.h>
> +#include <linux/stringify.h>
>
> #include <asm/errno.h>
>
> -#define FUTEX_MAX_LOOPS 128 /* What's the largest number you can think of? */
> +#define LLSC_MAX_LOOPS 128 /* What's the largest number you can think of? */

I just noticed - you might as well leave the name as is here, especially
if in patch 6 you align down address and use CAS on a 64-bit value as
per Will's comment (and it's no longer LLSC). I think renaming this is
unnecessary.

--
Catalin