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Mon, 08 Jun 2026 05:15:48 -0700 (PDT) From: Yuri Andriaccio To: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Tejun Heo , Johannes Weiner , =?UTF-8?q?Michal=20Koutn=C3=BD?= Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Luca Abeni , Yuri Andriaccio Subject: [RFC PATCH v6 01/25] sched/deadline: Fix replenishment logic for non-deferred servers Date: Mon, 8 Jun 2026 14:15:20 +0200 Message-ID: <20260608121546.69910-2-yurand2000@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260608121546.69910-1-yurand2000@gmail.com> References: <20260608121546.69910-1-yurand2000@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Enqueue and replenish non-deferred deadline servers when their runtime is exhausted and the replenishment timer could not be started because it is too close to the wake-up instant. --- Already merged in sched/tip: https://git.kernel.org/tip/eecd5e117cfa63a353f4c69fdcea5d9b14af698e Signed-off-by: Yuri Andriaccio --- kernel/sched/deadline.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index 7db4c87df83b..ddfd6bc63ab1 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -1515,8 +1515,12 @@ static void update_curr_dl_se(struct rq *rq, struct sched_dl_entity *dl_se, s64 if (unlikely(is_dl_boosted(dl_se) || !start_dl_timer(dl_se))) { if (dl_server(dl_se)) { - replenish_dl_new_period(dl_se, rq); - start_dl_timer(dl_se); + if (dl_se->dl_defer) { + replenish_dl_new_period(dl_se, rq); + start_dl_timer(dl_se); + } else { + enqueue_dl_entity(dl_se, ENQUEUE_REPLENISH); + } } else { enqueue_task_dl(rq, dl_task_of(dl_se), ENQUEUE_REPLENISH); } -- 2.54.0