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[86.49.44.151]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4361b6d6ea0sm12232935e9.16.2024.12.10.15.16.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 10 Dec 2024 15:16:52 -0800 (PST) Message-ID: <0d64be76-7afe-416b-96f7-6ceb713c7ce0@ovn.org> Date: Wed, 11 Dec 2024 00:16:51 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Cc: i.maximets@ovn.org, Peter Zijlstra , Joel Fernandes , LKML , Ingo Molnar , Juri Lelli , Vincent Guittot , vineethrp@google.com, shraash@google.com, marcel.ziswiler@codethink.co.uk Subject: Re: [v6.12] WARNING: at kernel/sched/deadline.c:1995 enqueue_dl_entity (task blocked for more than 28262 seconds) To: Vineeth Remanan Pillai References: <571b2045-320d-4ac2-95db-1423d0277613@ovn.org> <20241206151819.GA3949140@google.com> <20241209105514.GK21636@noisy.programming.kicks-ass.net> <20241209125601.GQ35539@noisy.programming.kicks-ass.net> <8ff30c5d-b8ac-4825-874a-d73931b85014@ovn.org> <10db7c11-5578-4386-88ae-542ffcaac818@ovn.org> Content-Language: en-US From: Ilya Maximets Autocrypt: addr=i.maximets@ovn.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 12/10/24 10:28, Ilya Maximets wrote: > On 12/10/24 03:58, Vineeth Remanan Pillai wrote: >>> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c >>> index fbdca89c677f..1f4b76c1f032 100644 >>> --- a/kernel/sched/fair.c >>> +++ b/kernel/sched/fair.c >>> @@ -1159,8 +1159,6 @@ static inline void update_curr_task(struct >>> task_struct *p, s64 delta_exec) >>> trace_sched_stat_runtime(p, delta_exec); >>> account_group_exec_runtime(p, delta_exec); >>> cgroup_account_cputime(p, delta_exec); >>> - if (p->dl_server) >>> - dl_server_update(p->dl_server, delta_exec); >>> } >>> >>> static inline bool did_preempt_short(struct cfs_rq *cfs_rq, struct >>> sched_entity *curr) >>> @@ -1210,6 +1208,11 @@ s64 update_curr_common(struct rq *rq) >>> return delta_exec; >>> } >>> >>> +static inline bool dl_server_active(struct dl_sched_entity *dl_se) >> Sorry a small typo in here. it should be struct sched_dl_entity and >> not dl_sched_entity. The line should be: >> >> "static inline bool dl_server_active(struct sched_dl_entity *dl_se)" > > Sure. I can try that. Running with this for about 8 hours and so far so good. Will leave the test running for the night, just in case. Best regards, Ilya Maximets. > > Note: I did indeed got lucky with the warning after 1 minute the > first time. The second time I tried the system didn't show any > issues up until 6 hours into the test... > > Best regards, Ilya Maximets. >