From: Peter Zijlstra <peterz@infradead.org>
To: Andrea Righi <arighi@nvidia.com>
Cc: Tejun Heo <tj@kernel.org>, David Vernet <void@manifault.com>,
Changwoo Min <changwoo@igalia.com>,
John Stultz <jstultz@google.com>, Ingo Molnar <mingo@redhat.com>,
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>,
Valentin Schneider <vschneid@redhat.com>,
K Prateek Nayak <kprateek.nayak@amd.com>,
Christian Loehle <christian.loehle@arm.com>,
David Dai <david.dai@linux.dev>, Emil Tsalapatis <etsal@meta.com>,
Lee Trager <ltrager@nvidia.com>,
Richard Cheng <icheng@nvidia.com>, Koba Ko <kobak@nvidia.com>,
Aiqun Yu <aiqun.yu@oss.qualcomm.com>,
sched-ext@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 15/18] sched_ext: Delegate proxy donor admission to BPF schedulers
Date: Thu, 10 Sep 2026 15:39:00 +0200 [thread overview]
Message-ID: <20260910133900.GT776954@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20260831134338.1531664-16-arighi@nvidia.com>
On Mon, Aug 31, 2026 at 03:42:25PM +0200, Andrea Righi wrote:
> diff --git a/kernel/sched/ext/ext.c b/kernel/sched/ext/ext.c
> index 5f4956cf7e369..aa6ba9e8d7cb0 100644
> --- a/kernel/sched/ext/ext.c
> +++ b/kernel/sched/ext/ext.c
> @@ -26,7 +26,28 @@ DEFINE_RAW_SPINLOCK(scx_sched_lock);
>
> bool scx_allow_proxy_exec(const struct task_struct *p)
> {
> - return p->sched_class != &ext_sched_class;
> + struct scx_sched *sch;
> +
> + if (p->sched_class != &ext_sched_class)
> + return true;
> +
> + sch = scx_task_sched(p);
> + return !sch || (sch->ops.flags & SCX_OPS_ENQ_BLOCKED);
> +}
Can we have this thing either be inline or wrapped in an inline function
that has scx_enabled() on?
next prev parent reply other threads:[~2026-09-10 13:39 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-31 13:42 [PATCHSET v13 sched_ext/for-7.4] sched: Make proxy execution compatible with sched_ext Andrea Righi
2026-08-31 13:42 ` [PATCH 01/18] sched/core: Drop mutex locks before proxy rescheduling Andrea Righi
2026-08-31 13:42 ` [PATCH 02/18] sched/core: Dequeue waking proxy donors before reset Andrea Righi
2026-09-01 5:24 ` K Prateek Nayak
2026-09-08 9:28 ` Andrea Righi
2026-08-31 13:42 ` [PATCH 03/18] sched: Make NOHZ CFS bandwidth checks follow proxy donor Andrea Righi
2026-09-10 9:54 ` Peter Zijlstra
2026-08-31 13:42 ` [PATCH 04/18] sched/core: Avoid false migration warning for proxy donors Andrea Righi
2026-09-10 10:06 ` Peter Zijlstra
2026-08-31 13:42 ` [PATCH 05/18] sched: Pass next class to sched_change_begin() Andrea Righi
2026-09-10 10:12 ` Peter Zijlstra
2026-08-31 13:42 ` [PATCH 06/18] sched: Add helper to block retained proxy donors Andrea Righi
2026-08-31 13:42 ` [PATCH 07/18] sched: Add sched_ext hooks for proxy execution Andrea Righi
2026-09-10 10:38 ` Peter Zijlstra
2026-08-31 13:42 ` [PATCH 08/18] sched: Introduce WF_ON_RQ wake flag Andrea Righi
2026-09-10 10:45 ` Peter Zijlstra
2026-08-31 13:42 ` [PATCH 09/18] sched_ext: Block proxy donors across scheduler transitions Andrea Righi
2026-09-10 10:53 ` Peter Zijlstra
2026-09-10 11:41 ` Peter Zijlstra
2026-08-31 13:42 ` [PATCH 10/18] sched_ext: Fix ops.running/stopping() pairing for proxy-exec donors Andrea Righi
2026-08-31 13:42 ` [PATCH 11/18] sched_ext: Move reject DSQ draining into core Andrea Righi
2026-08-31 13:42 ` [PATCH 12/18] sched_ext: Generalize the reject DSQ reenqueue path Andrea Righi
2026-09-03 22:39 ` Tejun Heo
2026-09-08 9:34 ` Andrea Righi
2026-08-31 13:42 ` [PATCH 13/18] sched_ext: Handle proxy-exec races in remote DSQ transfers Andrea Righi
2026-08-31 13:42 ` [PATCH 14/18] sched_ext: Split curr|donor references properly Andrea Righi
2026-09-10 11:47 ` Peter Zijlstra
2026-08-31 13:42 ` [PATCH 15/18] sched_ext: Delegate proxy donor admission to BPF schedulers Andrea Righi
2026-09-10 13:39 ` Peter Zijlstra [this message]
2026-09-10 13:41 ` Peter Zijlstra
2026-08-31 13:42 ` [PATCH 16/18] sched_ext: Add selftest for blocked donor admission Andrea Righi
2026-08-31 13:42 ` [PATCH 17/18] sched_ext: scx_qmap: Add proxy execution support Andrea Righi
2026-09-01 7:52 ` Richard Cheng
2026-09-08 9:42 ` Andrea Righi
2026-08-31 13:42 ` [PATCH 18/18] sched: Allow enabling proxy exec with sched_ext Andrea Righi
2026-09-03 22:51 ` [PATCHSET v13 sched_ext/for-7.4] sched: Make proxy execution compatible " Tejun Heo
2026-09-08 8:02 ` Peter Zijlstra
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