是否可以从内核空间阻止任务? [英] Is it possible to block a task from kernel space?

问题描述

我想知道是否有办法从内核空间阻止用户空间任务?内核中已经有为此功能了吗?我试图看一下，但到目前为止没有发现任何明显的东西.

I'm wondering if there's a way to block a userspace task from kernel space? Is there a function already in the kernel for this? I have tried to look but found nothing obvious so far.

推荐答案

在UP中，这非常简单:将任务的状态设置为TASK_INTERRUPTIBLE并调用schedule().您可以稍后通过将其状态设置为TASK_RUNNING来恢复".

In UP, this is quite simple: set the state of the task to TASK_INTERRUPTIBLE and call schedule(). You can "resume" it later by setting its state to TASK_RUNNING.

在SMP中，您必须确保任务不在另一个CPU上运行.

In SMP, you have to make sure that the task is not running on another CPU.

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