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[34.125.18.212]) by smtp.gmail.com with UTF8SMTPSA id d9443c01a7336-23e3b6ef68dsm6638495ad.205.2025.07.17.23.38.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Jul 2025 23:38:25 -0700 (PDT) From: Chia-I Wu To: Boris Brezillon , Steven Price , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 2/3] panthor: save task pid and comm in panthor_group Date: Thu, 17 Jul 2025 23:38:15 -0700 Message-ID: <20250718063816.1452123-3-olvaffe@gmail.com> X-Mailer: git-send-email 2.50.0.727.gbf7dc18ff4-goog In-Reply-To: <20250718063816.1452123-1-olvaffe@gmail.com> References: <20250718063816.1452123-1-olvaffe@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" We would like to report them on gpu errors. We choose to save the info on panthor_group_create rather than on panthor_open because, when the two differ, we are more interested in the task that created the group. Signed-off-by: Chia-I Wu Reviewed-by: Steven Price --- v3: fix new kerneldoc warnings v2: save to panthor_group on panthor_group_create rather than to panthor_file on panthor_open --- drivers/gpu/drm/panthor/panthor_sched.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/pant= hor/panthor_sched.c index a2248f692a030..9987aeb4608bc 100644 --- a/drivers/gpu/drm/panthor/panthor_sched.c +++ b/drivers/gpu/drm/panthor/panthor_sched.c @@ -641,6 +641,15 @@ struct panthor_group { size_t kbo_sizes; } fdinfo; =20 + /** @task_info: Info of current->group_leader that created the group. */ + struct { + /** @task_info.pid: pid of current->group_leader */ + pid_t pid; + + /** @task_info.comm: comm of current->group_leader */ + char comm[TASK_COMM_LEN]; + } task_info; + /** @state: Group state. */ enum panthor_group_state state; =20 @@ -3389,6 +3398,14 @@ group_create_queue(struct panthor_group *group, return ERR_PTR(ret); } =20 +static void group_init_task_info(struct panthor_group *group) +{ + struct task_struct *task =3D current->group_leader; + + group->task_info.pid =3D task->pid; + get_task_comm(group->task_info.comm, task); +} + static void add_group_kbo_sizes(struct panthor_device *ptdev, struct panthor_group *group) { @@ -3540,6 +3557,8 @@ int panthor_group_create(struct panthor_file *pfile, add_group_kbo_sizes(group->ptdev, group); spin_lock_init(&group->fdinfo.lock); =20 + group_init_task_info(group); + return gid; =20 err_put_group: --=20 2.50.0.727.gbf7dc18ff4-goog