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Sun, 24 May 2026 23:19:45 -0700 (PDT) Received: from jlelli-thinkpadt14gen4.remote.csb ([151.29.44.165]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-490428d3e9esm101629585e9.7.2026.05.24.23.19.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 24 May 2026 23:19:44 -0700 (PDT) Date: Mon, 25 May 2026 08:19:42 +0200 From: Juri Lelli To: Gabriele Monaco Cc: Ingo Molnar , Peter Zijlstra , linux-kernel@vger.kernel.org, jstultz@google.com, arighi@nvidia.com, soolaugust@gmail.com, suzhidao@xiaomi.com Subject: Re: [PATCH] sched/deadline: Use revised wakeup rule only for running dl_server Message-ID: References: <20260522125833.264145-1-gmonaco@redhat.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: <20260522125833.264145-1-gmonaco@redhat.com> Hi! On 22/05/26 14:58, Gabriele Monaco wrote: > Commit 14a857056466 ("sched/deadline: Use revised wakeup rule for > dl_server") applies the revised wakeup rule to any server, as a result > servers that are not running (dl_defer_running == 0) and start with a > deadline overflow get enqueued and can boost tasks as if they were > running, invalidating the defer rule and the documented state model. > > Apply the revised wakeup rule only for deferrable servers that are > marked as running. > > Fixes: 14a857056466 ("sched/deadline: Use revised wakeup rule for dl_server") > Signed-off-by: Gabriele Monaco > --- Makes sense to me. Acked-by: Juri Lelli Thanks, Juri