Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\rcu\tree.c Create Date:2022-07-28 10:27:12
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:Near the beginning of the process. The CPU is still very much alive* with pretty much all services enabled.

Proto:int rcutree_offline_cpu(unsigned int cpu)

Type:int

Parameter:

TypeParameterName
unsigned intcpu
3135  rdp = per_cpu_ptr( & rcu_data, cpu)
3136  rnp = This CPU's leaf of hierarchy
3137  raw_spin_lock_irqsave_rcu_node(rnp, flags)
3138  Fully functional CPUs. &= ~Mask to apply to leaf qsmask.
3139  raw_spin_unlock_irqrestore_rcu_node(rnp, flags)
3141  Update RCU priority boot kthread affinity for CPU-hotplug changes.
3144  tick_dep_set(TICK_DEP_BIT_RCU)
3145  Return 0