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 15:04:42
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：reserve_bp_slot

函数原型：int reserve_bp_slot(struct perf_event *bp)

返回类型：int

参数：

类型参数名称
struct perf_event *bp
306  mutex_lock( & Serialize accesses to the above constraints )
308  ret等于Constraints to check before allowing this new breakpoint counter:* == Non-pinned counter == (Considered as pinned for now)* - If attached to a single cpu, check:* (per_cpu(info->flexible, cpu) || (per_cpu(info->cpu_pinned, cpu)* +
310  mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.
312  返回:ret
调用者
名称描述
register_perf_hw_breakpoint