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Date: Mon, 3 Aug 2026 12:22:27 -1000
From: Tejun Heo <tj@kernel.org>
To: Andrea Righi <arighi@nvidia.com>
Cc: David Vernet <void@manifault.com>, Changwoo Min <changwoo@igalia.com>,
	John Stultz <jstultz@google.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>,
	Valentin Schneider <vschneid@redhat.com>,
	K Prateek Nayak <kprateek.nayak@amd.com>,
	Christian Loehle <christian.loehle@arm.com>,
	David Dai <david.dai@linux.dev>, Koba Ko <kobak@nvidia.com>,
	Aiqun Yu <aiqun.yu@oss.qualcomm.com>, Shuah Khan <shuah@kernel.org>,
	sched-ext@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 14/15] sched_ext: scx_qmap: Add proxy execution support
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References: <20260728154425.1549660-1-arighi@nvidia.com>
 <20260728154425.1549660-15-arighi@nvidia.com>
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In-Reply-To: <20260728154425.1549660-15-arighi@nvidia.com>

On Tue, Jul 28, 2026 at 05:43:32PM +0200, Andrea Righi wrote:
> +	 * A blocked donor rejected by a local DSQ must not be dispatched back
> +	 * to the same DSQ immediately. Move it to the global DSQ so another CPU
> +	 * can pick it up and kick an idle cid to accelerate its consumption.

My mental picture isn't complete. Can you expand on why this block is
necessary?

Thanks.

-- 
tejun