From: Daniel Bristot de Oliveira <bristot@redhat.com> To: linux-kernel@vger.kernel.org Cc: Marco Perronet <perronet@mpi-sws.org>, Daniel Bristot de Oliveira <bristot@redhat.com>, Ingo Molnar <mingo@redhat.com>, Peter Zijlstra <peterz@infradead.org>, Juri Lelli <juri.lelli@redhat.com>, Vincent Guittot <vincent.guittot@linaro.org>, Dietmar Eggemann <dietmar.eggemann@arm.com>, Steven Rostedt <rostedt@goodmis.org>, Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>, Li Zefan <lizefan@huawei.com>, Tejun Heo <tj@kernel.org>, Johannes Weiner <hannes@cmpxchg.org>, Valentin Schneider <valentin.schneider@arm.com>, cgroups@vger.kernel.org Subject: [PATCH 0/6] sched/deadline: cpuset task acceptance review Date: Tue, 12 Jan 2021 16:53:39 +0100 [thread overview] Message-ID: <cover.1610463999.git.bristot@redhat.com> (raw) While surveying the properties of the SCHED_DEADLINE, Marco Perronet found some inconsistencies in the acceptance of DL threads on cpuset. More precisely, regarding the acceptance of treads with arbitrary affinity. He contacted me, and while doing the investigation, we found yet other potential issues addressed in this patch series. Each patch has a more in-depth explanation, including ways to reproduce the problem. Daniel Bristot de Oliveira (6): sched/deadline: Consolidate the SCHED_DL task_can_attach() check on its own function sched/deadline: Inform dl_task_can_attach() if the cpuset is exclusive sched/deadline: Allow DL tasks on empty (cgroup v2) cpusets sched/deadline: Block DL tasks on non-exclusive cpuset if bandwitdh control is enable sched/deadline: Add helpers to get the correct root domain/span/dl_bw sched/deadline: Fixes cpu/rd/dl_bw references for suspended tasks include/linux/sched.h | 2 +- kernel/cgroup/cpuset.c | 5 ++++- kernel/sched/core.c | 13 ++++++------ kernel/sched/deadline.c | 28 ++++++++++++++++++++++--- kernel/sched/sched.h | 45 ++++++++++++++++++++++++++++++++++++++++- 5 files changed, 80 insertions(+), 13 deletions(-) -- 2.29.2
next reply other threads:[~2021-01-12 15:55 UTC|newest] Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-12 15:53 Daniel Bristot de Oliveira [this message] 2021-01-12 15:53 ` [PATCH 1/6] sched/deadline: Consolidate the SCHED_DL task_can_attach() check on its own function Daniel Bristot de Oliveira 2021-01-12 15:53 ` [PATCH 2/6] sched/deadline: Inform dl_task_can_attach() if the cpuset is exclusive Daniel Bristot de Oliveira 2021-01-12 15:53 ` [PATCH 3/6] sched/deadline: Allow DL tasks on empty (cgroup v2) cpusets Daniel Bristot de Oliveira 2021-01-14 12:12 ` Dietmar Eggemann 2021-01-18 12:51 ` Daniel Bristot de Oliveira 2021-01-22 8:08 ` Juri Lelli 2021-01-12 15:53 ` [PATCH 4/6] sched/deadline: Block DL tasks on non-exclusive cpuset if bandwitdh control is enable Daniel Bristot de Oliveira 2021-01-14 15:51 ` Dietmar Eggemann 2021-01-19 9:41 ` Daniel Bristot de Oliveira 2021-01-19 15:37 ` Dietmar Eggemann 2021-01-12 15:53 ` [PATCH 5/6] sched/deadline: Add helpers to get the correct root domain/span/dl_bw Daniel Bristot de Oliveira 2021-01-12 15:53 ` [PATCH 6/6] sched/deadline: Fixes cpu/rd/dl_bw references for suspended tasks Daniel Bristot de Oliveira 2021-01-15 14:36 ` Dietmar Eggemann 2021-01-18 13:17 ` Daniel Bristot de Oliveira
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=cover.1610463999.git.bristot@redhat.com \ --to=bristot@redhat.com \ --cc=bsegall@google.com \ --cc=cgroups@vger.kernel.org \ --cc=dietmar.eggemann@arm.com \ --cc=hannes@cmpxchg.org \ --cc=juri.lelli@redhat.com \ --cc=linux-kernel@vger.kernel.org \ --cc=lizefan@huawei.com \ --cc=mgorman@suse.de \ --cc=mingo@redhat.com \ --cc=perronet@mpi-sws.org \ --cc=peterz@infradead.org \ --cc=rostedt@goodmis.org \ --cc=tj@kernel.org \ --cc=valentin.schneider@arm.com \ --cc=vincent.guittot@linaro.org \ --subject='Re: [PATCH 0/6] sched/deadline: cpuset task acceptance review' \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: link
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).