linux-kernel - Re: [PATCH v8 07/12] atomic: Add atomic_cond_read_*

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Message-ID: <aWEMkHbBOgOkx_9f@willie-the-truck>
Date: Fri, 9 Jan 2026 14:11:28 +0000
From: Will Deacon <will@...nel.org>
To: Ankur Arora <ankur.a.arora@...cle.com>
Cc: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org,
	bpf@...r.kernel.org, arnd@...db.de, catalin.marinas@....com,
	peterz@...radead.org, akpm@...ux-foundation.org,
	mark.rutland@....com, harisokn@...zon.com, cl@...two.org,
	ast@...nel.org, rafael@...nel.org, daniel.lezcano@...aro.org,
	memxor@...il.com, zhenglifeng1@...wei.com,
	xueshuai@...ux.alibaba.com, joao.m.martins@...cle.com,
	boris.ostrovsky@...cle.com, konrad.wilk@...cle.com,
	Boqun Feng <boqun.feng@...il.com>
Subject: Re: [PATCH v8 07/12] atomic: Add atomic_cond_read_*_timeout()

On Sun, Dec 14, 2025 at 08:49:14PM -0800, Ankur Arora wrote:
> Add atomic load wrappers, atomic_cond_read_*_timeout() and
> atomic64_cond_read_*_timeout() for the cond-load timeout interfaces.
> 
> Cc: Will Deacon <will@...nel.org>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Boqun Feng <boqun.feng@...il.com>
> Signed-off-by: Ankur Arora <ankur.a.arora@...cle.com>
> ---
>  include/linux/atomic.h | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/include/linux/atomic.h b/include/linux/atomic.h
> index 8dd57c3a99e9..5bcb86e07784 100644
> --- a/include/linux/atomic.h
> +++ b/include/linux/atomic.h
> @@ -31,6 +31,16 @@
>  #define atomic64_cond_read_acquire(v, c) smp_cond_load_acquire(&(v)->counter, (c))
>  #define atomic64_cond_read_relaxed(v, c) smp_cond_load_relaxed(&(v)->counter, (c))
>  
> +#define atomic_cond_read_acquire_timeout(v, c, e, t) \
> +	smp_cond_load_acquire_timeout(&(v)->counter, (c), (e), (t))
> +#define atomic_cond_read_relaxed_timeout(v, c, e, t) \
> +	smp_cond_load_relaxed_timeout(&(v)->counter, (c), (e), (t))
> +
> +#define atomic64_cond_read_acquire_timeout(v, c, e, t) \
> +	smp_cond_load_acquire_timeout(&(v)->counter, (c), (e), (t))
> +#define atomic64_cond_read_relaxed_timeout(v, c, e, t) \
> +	smp_cond_load_relaxed_timeout(&(v)->counter, (c), (e), (t))

Please update the atomic_t documentation to explain what these do.

Will