psi_task_change

函数名称：psi_task_change

函数原型：void psi_task_change(struct task_struct *task, int clear, int set)

返回类型：void

参数：

类型	参数	名称
struct task_struct *	task
int	clear
int	set

749

cpu等于task_cpu(task)

751

bool wake_clock = true

752

void * iter = NULL

754

如果非进程ID则返回

757

如果psi_flags按位与set或psi_flags按位与clear的值不等于clear的值且非psi_bug则

760

Special printk facility for scheduler/timekeeping use only, _DO_NOT_USE_ !

763

psi_bug等于1

766

psi_flags与等于clear的反

767

psi_flags或等于set

775

如果此条件成立可能性小(为编译器优化)((clear & TSK_RUNNING) && (任务标志 & 进程处于工作队列中) && wq_worker_last_func - retrieve worker's last work function*@task: Task to retrieve last work function of == psi_avgs_work)则wake_clock = false

780

当group等于iterate_groups(task, & iter)循环

781

state_mask等于psi_group_change(group, cpu, clear, set)

783

如果state_mask按位与poll_states则Schedule polling if it's not already scheduled. It's safe to call even from* hotpath because even though kthread_queue_delayed_work takes worker->lock* spinlock that spinlock is never contended due to poll_scheduled atomic* preventing such competition.

786

如果wake_clock且非delayed_work_pending - Find out whether a delayable work item is currently* pending*@w: The work item in question( & avgs_work)则在延迟工作队列中放置任务

**调用者**
名称	描述
psi_memstall_enter	psi_memstall_enter - mark the beginning of a memory stall section@flags: flags to handle nested sections Marks the calling task as being stalled due to a lack of memory,* such as waiting for a refault or performing reclaim.
psi_memstall_leave	psi_memstall_leave - mark the end of an memory stall section@flags: flags to handle nested memdelay sections Marks the calling task as no longer stalled due to lack of memory.
cgroup_move_task	group_move_task - move task to a different cgroup@task: the task@to: the target css_set* Move task to a new cgroup and safely migrate its associated stall* state between the different groups

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码