From: Ankur Arora <ankur.a.arora@oracle•com>
To: Andrew Morton <akpm@linux-foundation•org>
Cc: Ankur Arora <ankur.a.arora@oracle•com>,
linux-kernel@vger•kernel.org, linux-arch@vger•kernel.org,
linux-arm-kernel@lists•infradead.org, linux-pm@vger•kernel.org,
linux-next@vger•kernel.org, bpf@vger•kernel.org, arnd@arndb•de,
catalin.marinas@arm•com, will@kernel•org, peterz@infradead•org,
mark.rutland@arm•com, harisokn@amazon•com, cl@gentwo•org,
ast@kernel•org, rafael@kernel•org, daniel.lezcano@linaro•org,
memxor@gmail•com, zhenglifeng1@huawei•com,
xueshuai@linux•alibaba.com, rdunlap@infradead•org,
david.laight.linux@gmail•com, joao.m.martins@oracle•com,
boris.ostrovsky@oracle•com, konrad.wilk@oracle•com,
ashok.bhat@arm•com, Boqun Feng <boqun.feng@gmail•com>,
Boqun Feng <boqun@kernel•org>, "Christoph Lameter" <cl@linux•com>,
Ingo Molnar <mingo@kernel•org>,
Konrad Dybcio <konradybcio@kernel•org>,
Mark Brown <broonie@kernel•org>
Subject: Re: [PATCH v11 1/2] kunit: add tests for smp_cond_load_*_timeout()
Date: Thu, 21 May 2026 22:10:20 -0700 [thread overview]
Message-ID: <87h5o0ni6b.fsf@oracle.com> (raw)
In-Reply-To: <20260521144629.11ee1e2ff88c5387a589f54a@linux-foundation.org>
Andrew Morton <akpm@linux-foundation•org> writes:
> On Thu, 21 May 2026 01:30:37 -0700 Ankur Arora <ankur.a.arora@oracle•com> wrote:
>
>> Add success and failure case tests for smp_cond_load_*_timeout().
>>
>> All of the test cases wait on some state in smp_cond_load_*_timeout().
>> In the success case we spawn a kthread that pokes the bit.
>>
>> Success or failure cases depend on the expected bit being set (or not).
>> Additionally in failure cases smp_cond_load_*_timeout() cannot return
>> before timeout.
>
> Your title "kunit: ..." implies that this is a kunit patchset. ie, and
> to my mind, this implies that the patchset makes changes to kunit
> infrastructure. This isn't the case, of course.
Aah yes. I did miss that.
>> ...
>>
>> +config BARRIER_TIMEOUT_TEST
>> + tristate "KUnit tests for smp_cond_load_relaxed_timeout()"
>
> The patchset which attempted to add smp_cond_load_relaxed_timeout() was
> titled "barrier: ...", which is a more appropriate identifier for this
> patchset.
>
> Anyway, I removed the series "barrier: Add
> smp_cond_load_{relaxed,acquire}_timeout()" from mm.git on May 19 for
> forgotten reasons. So I suggest that the series be respun and resent,
> with these two test patches included.
Will do.
> Again, I'm really not the guy to be handling these patches. But a 4-6%
> performance improvement in real world workloads is not to be ignored.
>
> Not by me, anyway.
:).
Thanks
--
ankur
next prev parent reply other threads:[~2026-05-22 5:11 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-08 12:25 [PATCH v11 00/14] barrier: Add smp_cond_load_{relaxed,acquire}_timeout() Ankur Arora
2026-04-08 12:25 ` [PATCH v11 01/14] asm-generic: barrier: Add smp_cond_load_relaxed_timeout() Ankur Arora
2026-05-06 7:30 ` Ankur Arora
2026-05-06 8:58 ` David Laight
2026-05-06 20:54 ` Ankur Arora
2026-05-07 9:57 ` David Laight
2026-05-08 6:31 ` Ankur Arora
2026-05-08 8:32 ` David Laight
2026-04-08 12:25 ` [PATCH v11 02/14] arm64: barrier: Support smp_cond_load_relaxed_timeout() Ankur Arora
2026-04-08 12:25 ` [PATCH v11 03/14] arm64/delay: move some constants out to a separate header Ankur Arora
2026-04-08 12:25 ` [PATCH v11 04/14] arm64: support WFET in smp_cond_load_relaxed_timeout() Ankur Arora
2026-04-08 12:25 ` [PATCH v11 05/14] arm64: rqspinlock: Remove private copy of smp_cond_load_acquire_timewait() Ankur Arora
2026-04-08 12:25 ` [PATCH v11 06/14] asm-generic: barrier: Add smp_cond_load_acquire_timeout() Ankur Arora
2026-04-08 12:25 ` [PATCH v11 07/14] atomic: Add atomic_cond_read_*_timeout() Ankur Arora
2026-04-08 12:25 ` [PATCH v11 08/14] locking/atomic: scripts: build atomic_long_cond_read_*_timeout() Ankur Arora
2026-04-08 12:25 ` [PATCH v11 09/14] bpf/rqspinlock: switch check_timeout() to a clock interface Ankur Arora
2026-04-08 12:25 ` [PATCH v11 10/14] bpf/rqspinlock: Use smp_cond_load_acquire_timeout() Ankur Arora
2026-04-08 12:25 ` [PATCH v11 11/14] sched: add need-resched timed wait interface Ankur Arora
2026-04-08 12:25 ` [PATCH v11 12/14] cpuidle/poll_state: Wait for need-resched via tif_need_resched_relaxed_wait() Ankur Arora
2026-04-20 16:57 ` Okanovic, Haris
2026-04-20 17:50 ` Ankur Arora
2026-04-21 7:15 ` Catalin Marinas
2026-04-20 22:12 ` Christoph Lameter (Ampere)
2026-04-08 12:25 ` [PATCH v11 13/14] kunit: enable testing smp_cond_load_relaxed_timeout() Ankur Arora
2026-04-08 12:25 ` [PATCH v11 14/14] kunit: add tests for smp_cond_load_relaxed_timeout() Ankur Arora
2026-05-21 8:30 ` [PATCH v11 1/2] kunit: add tests for smp_cond_load_*_timeout() Ankur Arora
2026-05-21 8:30 ` [PATCH v11 2/2] kunit: add clock tests for smp_cond_load_relaxed_timeout() Ankur Arora
2026-05-21 21:46 ` [PATCH v11 1/2] kunit: add tests for smp_cond_load_*_timeout() Andrew Morton
2026-05-21 21:57 ` Mark Brown
2026-05-22 5:10 ` Ankur Arora [this message]
2026-04-23 17:16 ` [PATCH v11 00/14] barrier: Add smp_cond_load_{relaxed,acquire}_timeout() Andrew Morton
2026-04-23 19:29 ` Ankur Arora
2026-04-24 14:16 ` [PATCH v11 00/14] barrier: Add smp_cond_load_{relaxed, acquire}_timeout() Okanovic, Haris
2026-04-24 14:10 ` Okanovic, Haris
2026-04-24 14:28 ` [PATCH v11 00/14] barrier: Add smp_cond_load_{relaxed,acquire}_timeout() Andrew Morton
2026-04-24 18:10 ` Ankur Arora
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