如果registered是1,表示在将任务添加到这个domain时,会把该任务挂到这个domain私有的pending链表,同时还会将其添加到全局的async_global_pending链表,这样,可以调用async_synchronize_full来等待任务执行完毕,这个接口会检查async_global_pending链表中的异步任务是否都已经执行完毕,此外也可以调
We need to finish all async code before the module init sequence is done. In the reverted commit the PF_USED_ASYNC flag was added to mark a thread that called async_schedule(). Then the PF_USED_ASYNC flag was used to determine whether or not async_synchronize_full() needs to be ...
932 kernel_init_freeable(); /* init 进程的一些其他初始化工作 */ 933 /* need to finish all async __init code before freeing the memory */ 934 async_synchronize_full(); /* 等待所有的异步调用执行完成 */ 935 free_initmem(); /* 释放 init 段内存 */ 936 mark_rodata_ro(); 937 syste...
async_synchronize_full(); } is_floppy = MAJOR(ROOT_DEV) == FLOPPY_MAJOR; if (is_floppy && rd_doload && rd_load_disk(0)) ROOT_DEV = Root_RAM0; mount_root(); out: [9] sys_mount(".", "/", NULL, MS_MOVE, NULL); [10] sys_chroot("."); }代码[1]:资料中提到,对于将根...
c static int __ref kernel_init(void *unused) { kernel_init_freeable(); async_synchronize_full(); ... panic("No init found. Try passing init= option to kernel. " "See Linux Documentation/init.txt for guidance."); } linux-3.10.1/init/main.c static noinline void __init kernel_init...
*/ if (mod->exit != NULL) mod->exit(); blocking_notifier_call_chain(&module_notify_list, MODULE_STATE_GOING, mod); klp_module_going(mod); ftrace_release_mod(mod); async_synchronize_full(); /* 记录最近卸载的模块的名字,便于诊断问题 */ strlcpy(last_unloaded_module, mod->...
async_synchronize_full(); ftrace_free_init_mem(); free_initmem(); mark_readonly(); /* * Kernel mappings are now finalized - update the userspace page-table * to finalize PTI. */ pti_finalize(); system_state = SYSTEM_RUNNING;
swsusp_resume_device) { wait_for_device_probe(); if (resume_wait) { while ((swsusp_resume_device = name_to_dev_t(resume_file)) == 0) msleep(10); async_synchronize_full(); } swsusp_resume_device = name_to_dev_t(resume_file); if (!swsusp_resume_device) { error = -ENODEV; ...
machine_is_cintegrator())totalram_pages+=free_area(__phys_to_pfn(__pa(__init_begin)),__phys_to_pfn(__pa(__init_end)),"init");}staticnoinline intinit_post(void){/* need to finish all async __init code before freeing the memory */async_synchronize_full();free_initmem();---内...
内存是计算机最重要的资源之一,内存管理是操作系统最重要的任务之一。内存管理并不是简单地管理一下内存而已,它还直接影响着操作系统的风格以及用户空间编程的模式。可以说内存管理的方式是一个系统刻入DNA的秉性。既然内存管理那么重要,那么今天我们就来全面系统地讲一讲Linux内存管理。 1.1...