首先在task链表中找到一个进程空位存放当前的进程,创建出一个进程的task_struct,然后设置task_struct。找到空位这步操作是在fork.c中的find_empty_process函数实现的: NR_TASKS是64,也就是上面所提到的链表容量就是64,如果当前有空位就将空位的ID分配给即将创建的进程,如果没有空位就返回EAGAIN find_empty_process函...
1 66'b'- Will immediately reboot the system without syncing or unmounting 67 your disks. 68 69 'c'- Will perform a system crashbya NULL pointer dereference. 70 A crashdump will be takenifconfigured. 71 72 'd'- Shows all locks that are held. 73 74 'e'- Send a SIGTERM to all pro...
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linux开机发现会有个kworker进程规律性占⽤CPU负载超过50% kworker 进程是内核⼯作进程，并且有很多进程是⽆害的。内核⼯作线程可以做任何事情，例如⼀些随机的例⼦：1. 做页⾯缓存写回 2. 处理某些种类的硬件事件 (如硬件中断,定时器，I / O等)3. 很多很多其他的东西 要知道任何kworker在做什么，...
结论居然根本没有其他进程在使用CPU,Linux会自动保存CPU运作。(以后我会把博客转到自己的网站上zhyz.ru) doesn’t this mean that simply no other process is using the CPU? from what I see, this is like the “Idle task” inWindows 补充:不知道是不是BUG现在2个线程都满了。
aarch32 linux4.14 最近遇到一个kworker问题,callstack如下,线程adas的陷入kernel space后会schedule_work调用一个while(1)的worker,kill adas后重新启动adas后adas线程会在调用dma_alloc_coherent的时候block住 以前的经验一直kworker为轻量的线程和可睡眠的中断下半部,对kworker认识不足 ...
因此,process_one_work()的最终目的是执行work_struct的func函数,也就是每个工作项需要完成的工作。 工作队列的使用: 工作项: 当然首先我们先来了解一下工作项: struct work_struct { atomic_long_t data;//work_struct的参数 struct list_head entry;//work_struct的连接链表 ...
Status in linux package in Ubuntu: Confirmed Bug description: Using Ubuntu 22.04, as of yesterday night upon rebooting the framework laptop (which had not been rebooted for several weeks), the fans come on strong and I see, with top, a kworker process at nearly 100% CPU ...
kernel: BUG: Bad page state in process kworker Status in linux-hwe-6.5 package in Ubuntu: Confirmed Bug description: Similar to the bughttps://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.5/+bug/2051123 where traces were shown, we observed a "BUG" ...
https://stackoverflow.com/questions/63686694/linux-kernel-bug-bad-page-state-in-process-understanding Note the comment about refcount:-1. I think that's what's relevant here (however, just my wild-a** guess…). I'm not a kernel guy and I don't play one on TV… -- sw 0 mgrant...