Messages in this thread | | | Date | Tue, 18 Apr 2006 15:12:35 +0800 | From | "Liu haixiang" <> | Subject | Question on Schedule and Preemption |
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Hi All,
Now I am developing drivers on Linux 2.6.
My problem is that from time to time, I will get log meesage from kernel: "scheduling while atomic ..." and the stack will be dumped by the kernel.
Then I investigate the code in sched.c but don't understand. Anybody can clarify this piece of code for me?
if (likely(!current->exit_state)) { if (unlikely(in_atomic())) { printk(KERN_ERR "scheduling while atomic: " "%s/0x%08x/%d\n", current->comm, preempt_count(), current->pid); dump_stack(); } }
Thanks a lot
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