Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\pid.c Create Date:2022-07-28 09:28:42
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:find_get_task_by_vpid

Proto:struct task_struct *find_get_task_by_vpid(pid_t nr)

Type:struct task_struct

Parameter:

TypeParameterName
pid_tnr
404  _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
405  task = find_task_by_vpid(nr)
406  If task Then get_task_struct(task)
408  _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()
410  Return task
Caller
NameDescribe
COMPAT_SYSCALL_DEFINE4
attach_to_pi_ownerLookup the task for the TID provided from user space and attach to* it after doing proper sanity checks.
fill_stats_for_pid