kernel thread vs user thread The most important difference is they use different memory, the kernel mode thread can access any kernel memory, while the user mode can only access the user memory. 相信世界是平的 谨记四个字“修身养性” 大江东去浪淘尽英雄,再牛B的人物最后也是一掊土 向善不是目的...
Kernel APC's -- 他们能被列入任何核心线程(kernel thread)队中并且它们将会被执行倘若既定的线程已经没有执行一个核心的APC. blog.21ic.com|基于9个网页 3. 线程可以分为内核级 10.线程可以分为内核级(Kernel Thread)和用户级(User Thread)两种,操作系统不可以直接调度用户级的线程。对。
#include <linux/kernel.h>#include <linux/module.h>static int Loop(void *dummy){ int i = 0; daemonize("mythread");/*内核线程取的名字*/ while(i++ < 5) { printk("current->mm = %p\n", current->mm); printk("current->active_mm = %p\n", current->active_mm); set_current_stat...
early_initcall(cpu_stop_init); 使用stop_one_cpu()或者stop_one_cpu_nowait()将work发给目标migration线程并wake它后,migration线程将会wakeup执行cpu_stopper_thread(),从works链表中取出work,并执行其work function: staticvoidcpu_stopper_thread(unsignedintcpu) {structcpu_stopper *stopper = &per_cpu(cpu_s...
#include//copy_to/from_user() #include#include// Required forthe wait queues #includeuint32_t read_count = 0; static struct task_struct *wait_thread; DECLARE_WAIT_QUEUE_HEAD(wait_queue_etx); dev_t dev = 0; static struct class *dev_class; ...
(&lockdep_timer, jiffies + msecs_to_jiffies(100)); } static void lockdep_test_worker(struct work_struct *work) { mutex_lock(&mutex_a); mdelay(300); //处理一些事情,这里用mdelay代替 mutex_unlock(&mutex_a); } static int lockdep_thread(void *nothing) { set_freezable(); set_user_nice...
*/ SDEV_OFFLINE, /* Device offlined (by error handling or * user request */ SDEV_BLOCK, /* Device blocked by scsi lld. No * scsi commands from user or midlayer * should be issued to the scsi * lld. */ SDEV_CREATED_BLOCK, /* same as above but for created devices */ }; .....
// file: arch/x86/kernel/cpu/common.cDEFINE_PER_CPU(unsignedlong,kernel_stack)=(unsignedlong)&init_thread_union-KERNEL_STACK_OFFSET+THREAD_SIZE; 宏DEFINE_PER_CPU内部将入参直接透传给了DEFINE_PER_CPU_SECTION宏,其定义如下: // file: include/linux/percpu-defs.h#define DEFINE_PER_CPU_SECTION(...
据说是一个类似work_queue的东东,dpc的简称是什么就不清楚了.dpc_init();// 初始化内核定时器timer_init();// 创建系统初始化工作线程,执行app初始化,lk把业务部分当成一个app.thread_resume(thread_create("bootstrap2",&bootstrap2,NULL,DEFAULT_PRIORITY,DEFAULT_STACK_SIZE));// 使能中断.exit_critical_...
0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process cpuspeed (pid: 48308, threadinfo ffff883f4eab4000, task ffff88400ad87500) Stack: ffff883f4eab5d08 ffffffff8112a281 ffff883f4eab5c18 0000000000000001 <d> 0000000000000002 000000006b4b36de 0000000000000001 ...