|I have a query about linux process and thread model. |Every process has a 8KB of kernel stack, out of which |some 960 bytes are reserved for task_struct. Now, |task_struct uniquely identifies a process. Correct, for Linux process and threads are identical and every process (or thread) has its own task_struct. every process is a child to some other process except for init. threads differs only in the sense that the share process address space. |That means,if any kernel thread of currently running process |wants to access task_struct of the process, then it |has to retrieve the corresponding task_struct by |manipulating esp register, since task_struct lies at |the bottom of the stack area allocated to every |process. Now, above scenario is only possible if all |the kernel threads of currently running process share |the same kernel stack area allocated to the process. |Is this true that kernel threads share kernel stack |area allocated to a process? since every process has its own task_strct and hence own kernel stack. if a thread wants to access its parent process's task struct it should make use of task_struct->parent. regards lk -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
