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 12:20:05
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：puset_cpus_allowed - return cpus_allowed mask from a tasks cpuset

函数原型：void cpuset_cpus_allowed(struct task_struct *tsk, struct cpumask *pmask)

返回类型：void

参数：

类型参数名称
struct task_struct *tsk
struct cpumask *pmask
3277  spin_lock_irqsave( & callback_lock, flags)
3278  _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
3279  Return in pmask the portion of a cpusets's cpus_allowed that* are online. If none are online, walk up the cpuset hierarchy* until we find one that does have some online cpus.* One way or another, we guarantee to return some non-empty subset
3280  _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()
3281  spin_unlock_irqrestore( & callback_lock, flags)
调用者
名称描述
sched_setaffinity