Should we be using CONFIG_PREEMPT_BKL in the Fedora kernel?

Dave Jones davej at redhat.com
Wed Mar 21 19:36:59 UTC 2007


On Wed, Mar 21, 2007 at 12:27:17PM -0700, Roland McGrath wrote:
 > FWIW, I have taken to CONFIG_PREEMPT=y in my hacking kernels because it
 > exposed on my clunky test machines bugs that were otherwise reproduced only
 > on big honking machines with lots of parallelism.  I haven't experienced a
 > bug that wasn't there at all with CONFIG_PREEMPT=n, only ones that were
 > hard to reproduce in hacker's conditions but more likely in production load
 > conditions.  So, out of sight, out of mind, sure.  But out of sight,
 > lurking to bite you in the ass later when you really aren't in the mood,
 > also damn likely.

It's crossed my mind to turn it on occasionally in rawhide just to shake
out those hard to find bugs.  The thing that's put me off has been that
well, we've got enough bugs already without needing to find more right now.

	Dave

-- 
http://www.codemonkey.org.uk




More information about the Fedora-kernel-list mailing list