Messages in this thread |  | | Subject | Re: top stack (l)users for 2.5.69 | From | Roland Dreier <> | Date | 07 May 2003 11:12:25 -0700 |
| |
Richard> The kernel stack, at least for ix86, is only one, set Richard> upon startup at 8192 bytes above a label called Richard> init_task_unit. The kernel must have a separate stack Richard> and, contrary to what I've been reading on this list, it Richard> can't have more kernel stacks than CPUs and, I don't see Richard> a separate stack allocated for different CPUs.
This is total nonsense. Please don't confuse matters by spreading misinformation like this. Every task has a separate (8K) kernel stack. Look at the implementation of do_fork() and in particular alloc_task_struct().
If there were only one kernel stack, what do you think would happen if a process went to sleep in kernel code?
- Roland - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |