On Fri, 2010-01-15 at 17:24 -0800, Daniel (Youngwhan) Song wrote: > I am reading "Understanding the Linux Kernel" in chapter 3 of > describing process, and trying to understand the terms of three of > Process, Lightweight Process and Thread. > > Please, confirm if my understanding is correct. > > 1. It seems that the concept of thread in the linux kernel is > lightweight process. Is this right? Yes > 1-1 If it is right, are both kernel thread and user-space thread > (pthread) lightweight process? Or does the lightweight process mean > only to kernel thread? Kernel threads does not have access to user address space(no access to mm_struct), exists only in the kernel address space, and does not context switch between user space and kernel space. Ex: ksoftirq, which are created from kernel_thread().
On the other hand, a light weight process or a thread (using pthread) shares process address and resources belonging to the same process. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to [email protected] Please read the FAQ at http://kernelnewbies.org/FAQ
