函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\events\hw_breakpoint.c Create Date:2022-07-27 15:05:07
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：init_hw_breakpoint

函数原型：int __init init_hw_breakpoint(void)

返回类型：int

参数：无

666  以i小于TYPE_MAX循环nr_slots[i]等于hw_breakpoint_slots(i)
669  遍历可用CPU(cpu)
670  以i小于TYPE_MAX循环
671  info等于get_bp_info(cpu, i)
673  sk_pinned[n] is the number of tasks having n+1 breakpoints 等于分配数组内存并置零
675  如果非sk_pinned[n] is the number of tasks having n+1 breakpoints 则转到:err_alloc
680  constraints_initialized等于1
682  perf_pmu_register( & perf_breakpoint, "breakpoint", PERF_TYPE_BREAKPOINT)
684  返回:register_die_notifier( & hw_breakpoint_exceptions_nb)
686  err_alloc :
687  遍历可用CPU(err_cpu)
688  以i小于TYPE_MAX循环kfree(sk_pinned[n] is the number of tasks having n+1 breakpoints )
690  如果err_cpu恒等于cpu则退出
694  返回:负ENOMEM
调用者
名称描述
perf_event_init