perf_pin_task

函数名称：Get the context for a task and increment its pin_count so it* can't get swapped to another task. This also increments its* reference count so that the context can't get freed.

函数原型：static struct perf_event_context *perf_pin_task_context(struct task_struct *task, int ctxn)

返回类型：struct perf_event_context

参数：

类型	参数	名称
struct task_struct *	task
int	ctxn

1430

ctx等于Get the perf_event_context for a task and lock it.* This has to cope with with the fact that until it is locked,* the context could get moved to another task.

1431

如果ctx则

1432

pin_count先自加

1433

raw_spin_unlock_irqrestore( & Protect the states of the events in the list,* nr_active, and the list:, flags)

1435

返回:ctx

**调用者**
名称	描述
perf_event_exit_task_context
perf_event_init_context	Initialize the perf_event context in task_struct

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

函数逻辑报告