From: Vineeth Pillai <viremana@linux.microsoft.com>
To: Peter Zijlstra <peterz@infradead.org>,
Julien Desfossez <jdesfossez@digitalocean.com>
Cc: Joel Fernandes <joelaf@google.com>,
Tim Chen <tim.c.chen@linux.intel.com>,
Aaron Lu <aaron.lwe@gmail.com>,
Aubrey Li <aubrey.intel@gmail.com>,
Dhaval Giani <dhaval.giani@oracle.com>,
Chris Hyser <chris.hyser@oracle.com>,
Nishanth Aravamudan <naravamudan@digitalocean.com>,
mingo@kernel.org, tglx@linutronix.de, pjt@google.com,
torvalds@linux-foundation.org, linux-kernel@vger.kernel.org,
fweisbec@gmail.com, keescook@chromium.org, kerrnel@google.com,
Phil Auld <pauld@redhat.com>,
Valentin Schneider <valentin.schneider@arm.com>,
Mel Gorman <mgorman@techsingularity.net>,
Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
Paolo Bonzini <pbonzini@redhat.com>,
joel@joelfernandes.org, vineeth@bitbyteword.org,
Chen Yu <yu.c.chen@intel.com>,
Christian Brauner <christian.brauner@ubuntu.com>,
Agata Gruza <agata.gruza@intel.com>,
Antonio Gomez Iglesias <antonio.gomez.iglesias@intel.com>,
graf@amazon.com, konrad.wilk@oracle.com, dfaggioli@suse.com,
rostedt@goodmis.org, derkling@google.com, benbjiang@tencent.com,
Vineeth Remanan Pillai <vpillai@digitalocean.com>,
Aaron Lu <aaron.lu@linux.alibaba.com>
Subject: Re: [RFC PATCH v7 08/23] sched: Add core wide task selection and scheduling.
Date: Fri, 28 Aug 2020 18:15:00 -0400 [thread overview]
Message-ID: <ca34288c-f7c5-e722-2d05-0fbde74b2bda@linux.microsoft.com> (raw)
In-Reply-To: <20200828205526.GC29142@worktop.programming.kicks-ass.net>
On 8/28/20 4:55 PM, Peter Zijlstra wrote:
> On Fri, Aug 28, 2020 at 03:51:09PM -0400, Julien Desfossez wrote:
>> + if (is_idle_task(rq_i->core_pick) && rq_i->nr_running)
>> + rq_i->core_forceidle = true;
> Did you mean: rq_i->core_pick == rq_i->idle ?
>
> is_idle_task() will also match idle-injection threads, which I'm not
> sure we want here.
Thanks for catching this. You are right, we should be checking for
rq_i->idle. There are couple other places where we use is_idle_task.
Will go through them and verify if we need to fix there as well.
Thanks,
Vineeth
next prev parent reply other threads:[~2020-08-28 22:15 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-28 19:51 [RFC PATCH v7 00/23] Core scheduling v7 Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 01/23] sched: Wrap rq::lock access Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 02/23] sched: Introduce sched_class::pick_task() Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 03/23] sched: Core-wide rq->lock Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 04/23] sched/fair: Add a few assertions Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 05/23] sched: Basic tracking of matching tasks Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 06/23] bitops: Introduce find_next_or_bit Julien Desfossez
2020-09-03 5:13 ` Randy Dunlap
2020-08-28 19:51 ` [RFC PATCH v7 07/23] cpumask: Introduce a new iterator for_each_cpu_wrap_or Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 08/23] sched: Add core wide task selection and scheduling Julien Desfossez
2020-08-28 20:51 ` Peter Zijlstra
2020-08-28 22:02 ` Vineeth Pillai
2020-08-28 22:23 ` Joel Fernandes
2020-08-29 7:47 ` peterz
2020-08-31 13:01 ` Vineeth Pillai
2020-08-31 14:24 ` Joel Fernandes
2020-09-01 3:38 ` Joel Fernandes
2020-09-01 5:10 ` Joel Fernandes
2020-09-01 12:34 ` Vineeth Pillai
2020-09-01 17:30 ` Joel Fernandes
2020-09-01 21:23 ` Vineeth Pillai
2020-09-02 1:11 ` Joel Fernandes
2020-08-28 20:55 ` Peter Zijlstra
2020-08-28 22:15 ` Vineeth Pillai [this message]
2020-09-15 20:08 ` Joel Fernandes
2020-08-28 19:51 ` [RFC PATCH v7 09/23] sched/fair: Fix forced idle sibling starvation corner case Julien Desfossez
2020-08-28 21:25 ` Peter Zijlstra
2020-08-28 23:24 ` Vineeth Pillai
2020-08-28 19:51 ` [RFC PATCH v7 10/23] sched/fair: wrapper for cfs_rq->min_vruntime Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 11/23] sched/fair: core wide cfs task priority comparison Julien Desfossez
2020-08-28 21:29 ` Peter Zijlstra
2020-09-17 14:15 ` Vineeth Pillai
2020-09-17 20:39 ` Vineeth Pillai
2020-09-23 1:46 ` Joel Fernandes
2020-09-23 1:52 ` Joel Fernandes
2020-09-25 15:02 ` Joel Fernandes
2020-09-15 21:49 ` chris hyser
[not found] ` <81b208ad-b9e6-bfbf-631e-02e9f75d73a2@linux.intel.com>
2020-09-16 14:24 ` chris hyser
2020-09-16 20:53 ` chris hyser
2020-09-17 1:09 ` Li, Aubrey
2020-08-28 19:51 ` [RFC PATCH v7 12/23] sched: Trivial forced-newidle balancer Julien Desfossez
2020-09-02 7:08 ` Pavan Kondeti
2020-08-28 19:51 ` [RFC PATCH v7 13/23] sched: migration changes for core scheduling Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 14/23] irq_work: Add support to detect if work is pending Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 15/23] entry/idle: Add a common function for activites during idle entry/exit Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 16/23] arch/x86: Add a new TIF flag for untrusted tasks Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 17/23] kernel/entry: Add support for core-wide protection of kernel-mode Julien Desfossez
2020-09-01 15:54 ` Thomas Gleixner
2020-09-01 16:50 ` Joel Fernandes
2020-09-01 20:02 ` Thomas Gleixner
2020-09-02 1:29 ` Joel Fernandes
2020-09-02 7:53 ` Thomas Gleixner
2020-09-02 15:12 ` Joel Fernandes
2020-09-02 16:57 ` Dario Faggioli
2020-09-03 4:34 ` Joel Fernandes
2020-09-03 11:05 ` Vineeth Pillai
2020-09-03 13:20 ` Thomas Gleixner
2020-09-03 20:30 ` Joel Fernandes
2020-09-03 13:43 ` Dario Faggioli
2020-09-03 20:25 ` Joel Fernandes
2020-08-28 19:51 ` [RFC PATCH v7 18/23] entry/idle: Enter and exit kernel protection during idle entry and exit Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 19/23] entry/kvm: Protect the kernel when entering from guest Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 20/23] sched/coresched: config option for kernel protection Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 21/23] sched: cgroup tagging interface for core scheduling Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 22/23] Documentation: Add documentation on " Julien Desfossez
2020-08-28 19:51 ` [RFC PATCH v7 23/23] sched: Debug bits Julien Desfossez
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