Re: "Scheduling while atomic"

[Erik Wikström <erik-wikstrom@xxxxxxxxx>]

On 2006-11-19 18:47, walt wrote:
> I find that asking a basic/dumb question of a smart group of people
> is often a very quick path to enlightenment :o)
>
> I've seen the 'scheduling while atomic' panic message a few times
> from the linux kernel over the years, and now I'm wondering if there
> is an analogous panic in the BSD kernels, DF in particular.
>
> If so, what would trigger such an event?

I'm certainly not one of the smart people but I do believe (from the 
name) that such a panic would occur if trying to call the scheduler 
while performing an atomic operation (being inside a critical section). 
The reason that this causes a panic would be that scheduling is not a 
quick operation (not atomic-quick anyway).
As to whether this can happen in DF or not I don't know, but it sure 
sound like something that should panic the kernel. If there is code that 
will cause such a panic is another question.

--
Erik Wikström