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Mon, 01 Dec 2025 04:42:31 -0800 (PST) Received: from victus-lab ([193.205.81.5]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b76f59e8612sm1173738266b.52.2025.12.01.04.42.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Dec 2025 04:42:31 -0800 (PST) From: Yuri Andriaccio To: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider Cc: linux-kernel@vger.kernel.org, Luca Abeni , Yuri Andriaccio Subject: [RFC PATCH v4 27/28] [DEBUG] sched/rt: Add debug BUG_ONs for pre-migration code Date: Mon, 1 Dec 2025 13:42:00 +0100 Message-ID: <20251201124205.11169-28-yurand2000@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251201124205.11169-1-yurand2000@gmail.com> References: <20251201124205.11169-1-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: quoted-printable Content-Type: text/plain; charset="utf-8" Add debug BUG_ONs in rt_queue_push/pull_task(s). Can be safely added after all the pre-migration patches. These are extra asserts which are only useful to debug the kernel code and are not meant to be part of the final patchset. Signed-off-by: Yuri Andriaccio --- kernel/sched/rt.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index 80580b48ab..435d147aa5 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -319,6 +319,9 @@ static inline void rt_queue_push_tasks(struct rt_rq *rt= _rq) { struct rq *rq =3D served_rq_of_rt_rq(rt_rq); + BUG_ON(rt_rq =3D=3D NULL); + BUG_ON(rq !=3D cpu_rq(rq->cpu)); + if (!has_pushable_tasks(rt_rq)) return; @@ -329,6 +332,9 @@ static inline void rt_queue_pull_task(struct rt_rq *rt_= rq) { struct rq *rq =3D served_rq_of_rt_rq(rt_rq); + BUG_ON(rt_rq =3D=3D NULL); + BUG_ON(rq !=3D cpu_rq(rq->cpu)); + queue_balance_callback(rq, &per_cpu(rt_pull_head, rq->cpu), pull_rt_task); } -- 2.51.0