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Wed, 14 Jan 2026 08:10:52 -0800 (PST) Received: from jlelli-thinkpadt14gen4.remote.csb ([151.29.129.40]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-47ee578d1b2sm35702325e9.2.2026.01.14.08.10.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Jan 2026 08:10:52 -0800 (PST) Date: Wed, 14 Jan 2026 17:10:50 +0100 From: Juri Lelli To: Yuri Andriaccio Cc: Ingo Molnar , Peter Zijlstra , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , linux-kernel@vger.kernel.org, Luca Abeni , Yuri Andriaccio Subject: Re: [RFC PATCH v4 02/28] sched/deadline: Distinct between dl_rq and my_q Message-ID: References: <20251201124205.11169-1-yurand2000@gmail.com> <20251201124205.11169-3-yurand2000@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251201124205.11169-3-yurand2000@gmail.com> Hello, Think we want s/Distinct/Distinguish/ in $SUBJECT. On 01/12/25 13:41, Yuri Andriaccio wrote: > From: luca abeni > > Split the single runqueue pointer in sched_dl_entity into two separate > pointers, following the existing pattern used by sched_rt_entity: > > - dl_rq: Points to the deadline runqueue where this entity is queued > (global runqueue). > - my_q: Points to the runqueue that this entity serves (for servers). > > This distinction is currently redundant for the fair_server (both point > to the same CPU's structures), but is essential for future RT cgroup > support where deadline servers will be queued on the global dl_rq while > serving tasks from cgroup-specific runqueues. > > Update rq_of_dl_se() to use container_of() to recover the global rq from > dl_rq, and update fair.c to explicitly use my_q (local rq) when accessing > the served runqueue. > > Update dl_server_init() to take a dl_rq pointer (use to retrieve the > global runqueue where the dl_server is scheduled) and a rq pointer (for > the local runqueue served by the server). > > Signed-off-by: luca abeni > Signed-off-by: Yuri Andriaccio Reviewed-by: Juri Lelli Thanks, Juri