Commit 33b9cb6d authored by Chia-I Wu's avatar Chia-I Wu Committed by Steven Price
Browse files

panthor: save task pid and comm in panthor_group 



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: default avatarChia-I Wu <olvaffe@gmail.com>
Reviewed-by: default avatarSteven Price <steven.price@arm.com>
Signed-off-by: default avatarSteven Price <steven.price@arm.com>
Link: https://lore.kernel.org/r/20250718063816.1452123-3-olvaffe@gmail.com
parent 78ededb6

drivers/gpu/drm/panthor/panthor_sched.c

+19 −0
Original line number Diff line number Diff line
@@ -641,6 +641,15 @@ struct panthor_group { 
		size_t kbo_sizes;

	} fdinfo;



	/** @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;
@@ -3389,6 +3398,14 @@ group_create_queue(struct panthor_group *group, 
	return ERR_PTR(ret);

}



static void group_init_task_info(struct panthor_group *group)

{

	struct task_struct *task = current->group_leader;



	group->task_info.pid = 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);



	group_init_task_info(group);



	return gid;



err_put_group: