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

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Message-ID: <87cy3imwre.fsf@oracle.com>
Date: Fri, 09 Jan 2026 11:06:13 -0800
From: Ankur Arora <ankur.a.arora@...cle.com>
To: Will Deacon <will@...nel.org>
Cc: Ankur Arora <ankur.a.arora@...cle.com>, 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()


Will Deacon <will@...nel.org> writes:

> 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.

Missed that. Will update.

--
ankur