函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\rcu\tree.c Create Date:2022-07-27 11:26:58
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：This function is invoked from each scheduling-clock interrupt,* and checks to see if this CPU is in a non-context-switch quiescent* state, for example, user mode or idle loop. It also schedules RCU* core processing

函数原型：void rcu_sched_clock_irq(int user)

返回类型：void

参数：

类型参数名称
intuser
2260  Tracepoint for start/end markers used for utilization calculations.* By convention, the string is of the following forms:* "Start " -- Mark the start of the specified activity,* such as "context switch". Nesting is permitted.
2261  raw_cpu_inc(ticks_this_gp)
2263  如果smp_load_acquire(this_cpu_ptr( & rcu_urgent_qs))则
2265  如果非_is_cpu_rrupt_from_idle - see if interrupted from idle* If the current CPU is idle and running at a first-level (not nested)* interrupt from idle, return true. The caller must have at least* disabled preemption.且非user则
2266  设置进程需要被调度出去的标志
2267  设置CPU的内核抢占
2269  __this_cpu_write(rcu_urgent_qs, false)
2271  Check to see if this CPU is in a non-context-switch quiescent state,* namely user mode and idle loop.
2272  如果rcu_pending(user)则invoke_rcu_core()
2275  Tracepoint for start/end markers used for utilization calculations.* By convention, the string is of the following forms:* "Start " -- Mark the start of the specified activity,* such as "context switch". Nesting is permitted.