函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\events\core.c Create Date:2022-07-27 14:57:17
Last Modify:2022-05-20 07:50:19 Copyright©Brick
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函数名称：perf_pmu_output_stop

函数原型：static void perf_pmu_output_stop(struct perf_event *event)

返回类型：void

参数：

类型参数名称
struct perf_event *event
7219  restart :
7220  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
7228  cpu等于cpu
7229  如果cpu恒等于负1则cpu等于READ_ONCE(oncpu)
7232  如果cpu恒等于负1则继续下一循环
7235  err等于pu_function_call - call a function on the cpu*@func: the function to be called*@info: the function call argument* Calls the function @func on the remote cpu.* returns: @func return value or -ENXIO when the cpu is offline
7236  如果err恒等于负EAGAIN则
7237  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
7238  转到:restart
7241  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
调用者
名称描述
perf_mmap_closeA buffer can be mmap()ed multiple times; either directly through the same* event, or through other events by use of perf_event_set_output().* In order to undo the VM accounting done by perf_mmap() we need to destroy