Unverified Commit a300fa02 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!4968 sched: migtate user interface from smart grid to sched bpf 

Merge Pull Request from: @ci-robot 
 
PR sync from: Liao Chen <liaochen4@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/2QOKRACEQGXXIC6PDCNTPTPJV3RY6KHR/ 
Migtating user interface from smart grid to sched bpf, which allows
users to set SCHED_GRID_QOS_TASK_LEVEL through:

        /proc/${pid}/task/${pid}/tag

interface. Although arbitrary integer value could be assigned to
, currnetly we clamp the value of SCHED_GRID_QOS_TASK_LEVEL
to 0-7, which maintains consistency.

Liao Chen (1):
  sched: migtate user interface from smart grid to sched bpf


-- 
2.34.1
 
https://gitee.com/openeuler/kernel/issues/I918W0 
 
Link:https://gitee.com/openeuler/kernel/pulls/4968

 

Reviewed-by: default avatarWeilong Chen <chenweilong@huawei.com>
Reviewed-by: default avatarZhang Jianhua <chris.zjh@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents bd5ca1a5 d42e0dfe

fs/proc/base.c

+12 −0
Original line number Diff line number Diff line
@@ -3967,6 +3967,18 @@ static ssize_t pid_tag_write(struct file *file, const char __user *buf, 


	sched_settag(tsk, tag);



#ifdef CONFIG_QOS_SCHED_SMART_GRID

	tag = tag < SCHED_GRID_QOS_TASK_LEVEL_HIGHEST ?

		SCHED_GRID_QOS_TASK_LEVEL_HIGHEST : tag;

	tag = tag >= SCHED_GRID_QOS_TASK_LEVEL_MAX ?

		SCHED_GRID_QOS_TASK_LEVEL_DEFAULT : tag;



	if (tsk->grid_qos != NULL &&

	    tsk->grid_qos->stat.set_class_lvl != NULL)

		err = tsk->grid_qos->stat.set_class_lvl(&tsk->grid_qos->stat,

							(unsigned int)tag);

#endif



out:

	put_task_struct(tsk);

	return err < 0 ? err : count;