函数逻辑报告 |
Source Code:kernel\events\core.c |
Create Date:2022-07-27 14:54:14 |
Last Modify:2022-05-20 07:50:19 | Copyright©Brick |
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函数名称:Kill an event dead; while event:refcount will preserve the event* object, it will not preserve its functionality. Once the last 'user'* gives up the object, we'll destroy the thing.
函数原型:int perf_event_release_kernel(struct perf_event *event)
返回类型:int
参数:
类型 | 参数 | 名称 |
---|---|---|
struct perf_event * | event |
4728 | 如果非ctx则 |
4729 | WARN_ON_ONCE(attach_state & (PERF_ATTACH_CONTEXT | PERF_ATTACH_GROUP)) |
4731 | 转到:no_ctx |
4737 | ctx等于perf_event_ctx_lock(event) |
4738 | WARN_ON_ONCE(These fields let us detect when two contexts have both* been cloned (inherited) from a common ancestor.) |
4741 | 关闭本地中断,获取所要保护的运行队列(runqueue)的自旋锁(spinlock),为查找可运行进程做准备。( & Protect the states of the events in the list,* nr_active, and the list:) |
4753 | state等于PERF_EVENT_STATE_DEAD |
4754 | raw_spin_unlock_irq( & Protect the states of the events in the list,* nr_active, and the list:) |
4756 | perf_event_ctx_unlock(event, ctx) |
4758 | again : |
4759 | mutex_lock( & child_mutex) |
4783 | mutex_lock( & Protect the list of events. Locking either mutex or lock* is sufficient to ensure the list doesn't change; to change* the list you need to lock both the mutex and the spinlock.) |
4784 | mutex_lock( & child_mutex) |
4795 | 链表项移动到头部 |
4806 | 转到:again |
4813 | 删除链表项 |
4820 | smp_mb() |
4821 | wake_up_var(var) |
4824 | no_ctx : |
4826 | 返回:0 |
名称 | 描述 |
---|---|
measure_residency_fn | |
hardlockup_detector_perf_init | hardlockup_detector_perf_init - Probe whether NMI event is available at all |
perf_release | Called when the last reference to the file is gone. |
unregister_hw_breakpoint | register_hw_breakpoint - unregister a user-space hardware breakpoint*@bp: the breakpoint structure to unregister |
hardlockup_detector_perf_cleanup | hardlockup_detector_perf_cleanup - Cleanup disabled events and destroy them* Called from lockup_detector_cleanup(). Serialized by the caller. |
源代码转换工具 开放的插件接口 | X |
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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 |