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From: Andrea Righi <arighi@nvidia.com>
To: 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>,
	Joel Fernandes <joelagnelf@nvidia.com>, Tejun Heo <tj@kernel.org>,
	David Vernet <void@manifault.com>,
	Changwoo Min <changwoo@igalia.com>, Shuah Khan <shuah@kernel.org>
Cc: sched-ext@lists.linux.dev, bpf@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 03/14] sched/deadline: Clear the defer params
Date: Fri, 17 Oct 2025 11:25:50 +0200	[thread overview]
Message-ID: <20251017093214.70029-4-arighi@nvidia.com> (raw)
In-Reply-To: <20251017093214.70029-1-arighi@nvidia.com>

From: Joel Fernandes <joelagnelf@nvidia.com>

The defer params were not cleared in __dl_clear_params. Clear them.

Without this is some of my test cases are flaking and the DL timer is
not starting correctly AFAICS.

Fixes: a110a81c52a9 ("sched/deadline: Deferrable dl server")
Acked-by: Juri Lelli <juri.lelli@redhat.com>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
---
 kernel/sched/deadline.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 48357d4609bf9..4aefb34a1d38b 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -3387,6 +3387,9 @@ static void __dl_clear_params(struct sched_dl_entity *dl_se)
 	dl_se->dl_non_contending	= 0;
 	dl_se->dl_overrun		= 0;
 	dl_se->dl_server		= 0;
+	dl_se->dl_defer			= 0;
+	dl_se->dl_defer_running		= 0;
+	dl_se->dl_defer_armed		= 0;
 
 #ifdef CONFIG_RT_MUTEXES
 	dl_se->pi_se			= dl_se;
-- 
2.51.0


  parent reply	other threads:[~2025-10-17  9:33 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-17  9:25 [PATCHSET v9 sched_ext/for-6.19] Add a deadline server for sched_ext tasks Andrea Righi
2025-10-17  9:25 ` [PATCH 01/14] sched/debug: Fix updating of ppos on server write ops Andrea Righi
2025-10-20  8:36   ` Juri Lelli
2025-10-17  9:25 ` [PATCH 02/14] sched/debug: Stop and start server based on if it was active Andrea Righi
2025-10-20  9:12   ` Juri Lelli
2025-10-20  9:27     ` Juri Lelli
2025-10-17  9:25 ` Andrea Righi [this message]
2025-10-17  9:25 ` [PATCH 04/14] sched/deadline: Return EBUSY if dl_bw_cpus is zero Andrea Righi
2025-10-20  9:49   ` Juri Lelli
2025-10-20 13:38     ` Andrea Righi
2025-10-20 14:03       ` Andrea Righi
2025-10-20 14:12         ` Juri Lelli
2025-10-17  9:25 ` [PATCH 05/14] sched: Add a server arg to dl_server_update_idle_time() Andrea Righi
2025-10-20  9:54   ` Juri Lelli
2025-10-20 12:49   ` Peter Zijlstra
2025-10-17  9:25 ` [PATCH 06/14] sched_ext: Add a DL server for sched_ext tasks Andrea Righi
2025-10-17 15:40   ` Tejun Heo
2025-10-17 19:00     ` Andrea Righi
2025-10-17 15:47   ` Tejun Heo
2025-10-17 18:58     ` Andrea Righi
2025-10-17 19:04       ` Tejun Heo
2025-10-17 19:06         ` Andrea Righi
2025-10-20 11:58   ` Juri Lelli
2025-10-20 13:50     ` Andrea Righi
2025-10-20 14:09       ` Juri Lelli
2025-10-17  9:25 ` [PATCH 07/14] sched/debug: Add support to change sched_ext server params Andrea Righi
2025-10-20 12:45   ` Juri Lelli
2025-10-21  6:23     ` Andrea Righi
2025-10-17  9:25 ` [PATCH 08/14] sched/deadline: Add support to remove DL server's bandwidth contribution Andrea Righi
2025-10-20 13:46   ` Juri Lelli
2025-10-17  9:25 ` [PATCH 09/14] sched/deadline: Account ext server bandwidth Andrea Righi
2025-10-17  9:25 ` [PATCH 10/14] sched/deadline: Allow to initialize DL server when needed Andrea Righi
2025-10-17  9:25 ` [PATCH 11/14] sched/deadline: Fix DL server crash in inactive_timer callback Andrea Righi
2025-10-17  9:25 ` [PATCH 12/14] sched_ext: Selectively enable ext and fair DL servers Andrea Righi
2025-10-17  9:26 ` [PATCH 13/14] selftests/sched_ext: Add test for sched_ext dl_server Andrea Righi
2025-10-19 19:04   ` Emil Tsalapatis
2025-10-20 13:22     ` Andrea Righi
2025-10-20 13:44       ` Andrea Righi
2025-10-20 13:26   ` Christian Loehle
2025-10-20 13:55     ` Andrea Righi
2025-10-20 14:00       ` Andrea Righi
2025-10-20 14:21       ` Christian Loehle
2025-10-23 15:01         ` Christian Loehle
2025-10-23 15:11           ` Andrea Righi
2025-10-17  9:26 ` [PATCH 14/14] selftests/sched_ext: Add test for DL server total_bw consistency Andrea Righi

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