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KFunc bpf_iter_task_new

v6.7

Initialize a task iterator.

Definition

it should be a stack allocated struct bpf_iter_task that is used to iterate over tasks. The task parameter is the task to iterate over. The flags parameter is a bitmask of flags that control the behavior of the iterator. The following flags are supported:

  • BPF_TASK_ITER_ALL_PROCS: Iterating all process in the system.
  • BPF_TASK_ITER_ALL_THREADS: Iterating all threads in the system.
  • BPF_TASK_ITER_PROC_THREADS: Iterating all threads of a specific tas

int bpf_iter_task_new(struct bpf_iter_task *it, struct task_struct *task__nullable, unsigned int flags)

Note

This kfunc is RCU protected. This means that the kfunc can be called from RCU read-side critical section. If a program isn't called from RCU read-side critical section, such as sleepable programs, the bpf_rcu_read_lock and bpf_rcu_read_unlock to protect the calls to such KFuncs.

Usage

Docs could be improved

This part of the docs is incomplete, contributions are very welcome

Program types

The following program types can make use of this kfunc:

Example

Docs could be improved

This part of the docs is incomplete, contributions are very welcome