From: Valentin Schneider <valentin.schneider@arm•com>
To: Will Deacon <will@kernel•org>, linux-arm-kernel@lists•infradead.org
Cc: linux-arch@vger•kernel.org, linux-kernel@vger•kernel.org,
Will Deacon <will@kernel•org>,
Catalin Marinas <catalin.marinas@arm•com>,
Marc Zyngier <maz@kernel•org>,
Greg Kroah-Hartman <gregkh@linuxfoundation•org>,
Peter Zijlstra <peterz@infradead•org>,
Morten Rasmussen <morten.rasmussen@arm•com>,
Qais Yousef <qais.yousef@arm•com>,
Suren Baghdasaryan <surenb@google•com>,
Quentin Perret <qperret@google•com>, Tejun Heo <tj@kernel•org>,
Johannes Weiner <hannes@cmpxchg•org>,
Ingo Molnar <mingo@redhat•com>,
Juri Lelli <juri.lelli@redhat•com>,
Vincent Guittot <vincent.guittot@linaro•org>,
"Rafael J. Wysocki" <rjw@rjwysocki•net>,
Dietmar Eggemann <dietmar.eggemann@arm•com>,
Daniel Bristot de Oliveira <bristot@redhat•com>,
Mark Rutland <mark.rutland@arm•com>,
kernel-team@android•com
Subject: Re: [PATCH v9 08/20] cpuset: Cleanup cpuset_cpus_allowed_fallback() use in select_fallback_rq()
Date: Thu, 10 Jun 2021 13:59:56 +0100 [thread overview]
Message-ID: <877dj1dgdv.mognet@arm.com> (raw)
In-Reply-To: <20210608180313.11502-9-will@kernel.org>
On 08/06/21 19:03, Will Deacon wrote:
> select_fallback_rq() only needs to recheck for an allowed CPU if the
> affinity mask of the task has changed since the last check.
>
> Return a 'bool' from cpuset_cpus_allowed_fallback() to indicate whether
> the affinity mask was updated, and use this to elide the allowed check
> when the mask has been left alone.
>
> No functional change.
>
> Suggested-by: Valentin Schneider <valentin.schneider@arm•com>
> Signed-off-by: Will Deacon <will@kernel•org>
Thanks!
Reviewed-by: Valentin Schneider <valentin.schneider@arm•com>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists•infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-06-10 13:01 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-08 18:02 [PATCH v9 00/20] Add support for 32-bit tasks on asymmetric AArch32 systems Will Deacon
2021-06-08 18:02 ` [PATCH v9 01/20] arm64: cpuinfo: Split AArch32 registers out into a separate struct Will Deacon
2021-06-08 18:02 ` [PATCH v9 02/20] arm64: Allow mismatched 32-bit EL0 support Will Deacon
2021-06-08 18:02 ` [PATCH v9 03/20] KVM: arm64: Kill 32-bit vCPUs on systems with mismatched " Will Deacon
2021-06-08 18:02 ` [PATCH v9 04/20] arm64: Kill 32-bit applications scheduled on 64-bit-only CPUs Will Deacon
2021-06-08 18:02 ` [PATCH v9 05/20] sched: Introduce task_cpu_possible_mask() to limit fallback rq selection Will Deacon
2021-06-08 18:02 ` [PATCH v9 06/20] cpuset: Don't use the cpu_possible_mask as a last resort for cgroup v1 Will Deacon
2021-06-10 12:59 ` Valentin Schneider
2021-06-08 18:03 ` [PATCH v9 07/20] cpuset: Honour task_cpu_possible_mask() in guarantee_online_cpus() Will Deacon
2021-06-08 18:03 ` [PATCH v9 08/20] cpuset: Cleanup cpuset_cpus_allowed_fallback() use in select_fallback_rq() Will Deacon
2021-06-10 12:59 ` Valentin Schneider [this message]
2021-06-08 18:03 ` [PATCH v9 09/20] sched: Reject CPU affinity changes based on task_cpu_possible_mask() Will Deacon
2021-06-08 18:03 ` [PATCH v9 10/20] sched: Introduce task_struct::user_cpus_ptr to track requested affinity Will Deacon
2021-06-08 18:03 ` [PATCH v9 11/20] sched: Split the guts of sched_setaffinity() into a helper function Will Deacon
2021-06-08 18:03 ` [PATCH v9 12/20] sched: Allow task CPU affinity to be restricted on asymmetric systems Will Deacon
2021-06-10 13:00 ` Valentin Schneider
2021-06-08 18:03 ` [PATCH v9 13/20] sched: Introduce dl_task_check_affinity() to check proposed affinity Will Deacon
2021-06-08 18:03 ` [PATCH v9 14/20] arm64: Implement task_cpu_possible_mask() Will Deacon
2021-06-08 18:03 ` [PATCH v9 15/20] arm64: exec: Adjust affinity for compat tasks with mismatched 32-bit EL0 Will Deacon
2021-06-08 18:03 ` [PATCH v9 16/20] arm64: Prevent offlining first CPU with 32-bit EL0 on mismatched system Will Deacon
2021-06-08 18:03 ` [PATCH v9 17/20] arm64: Advertise CPUs capable of running 32-bit applications in sysfs Will Deacon
2021-06-08 18:03 ` [PATCH v9 18/20] arm64: Hook up cmdline parameter to allow mismatched 32-bit EL0 Will Deacon
2021-06-08 18:03 ` [PATCH v9 19/20] arm64: Remove logic to kill 32-bit tasks on 64-bit-only cores Will Deacon
2021-06-08 18:03 ` [PATCH v9 20/20] Documentation: arm64: describe asymmetric 32-bit support Will Deacon
2021-06-11 16:15 ` [PATCH v9 00/20] Add support for 32-bit tasks on asymmetric AArch32 systems Will Deacon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=877dj1dgdv.mognet@arm.com \
--to=valentin.schneider@arm$(echo .)com \
--cc=bristot@redhat$(echo .)com \
--cc=catalin.marinas@arm$(echo .)com \
--cc=dietmar.eggemann@arm$(echo .)com \
--cc=gregkh@linuxfoundation$(echo .)org \
--cc=hannes@cmpxchg$(echo .)org \
--cc=juri.lelli@redhat$(echo .)com \
--cc=kernel-team@android$(echo .)com \
--cc=linux-arch@vger$(echo .)kernel.org \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=mark.rutland@arm$(echo .)com \
--cc=maz@kernel$(echo .)org \
--cc=mingo@redhat$(echo .)com \
--cc=morten.rasmussen@arm$(echo .)com \
--cc=peterz@infradead$(echo .)org \
--cc=qais.yousef@arm$(echo .)com \
--cc=qperret@google$(echo .)com \
--cc=rjw@rjwysocki$(echo .)net \
--cc=surenb@google$(echo .)com \
--cc=tj@kernel$(echo .)org \
--cc=vincent.guittot@linaro$(echo .)org \
--cc=will@kernel$(echo .)org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox