函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\cgroup\cpuset.c Create Date:2022-07-27 12:20:06
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：puset_cpus_allowed_fallback - final fallback before complete catastrophe

函数原型：void cpuset_cpus_allowed_fallback(struct task_struct *tsk)

返回类型：void

参数：

类型参数名称
struct task_struct *tsk>cpus_allowed, we fall back to task_cs(tsk)->cpus_allowed. In legacy
3298  _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
3299  do_set_cpus_allowed(>cpus_allowed, we fall back to task_cs(tsk)->cpus_allowed. In legacy, Cgroup v2 behavior is used when on default hierarchy or the* cgroup_v2_mode flag is set. ? user-configured CPUs and Memory Nodes allow to tasks : cpu_possible_mask)
3301  _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()