On Fri, Feb 12, 2016 at 10:14:22AM -0800, Yang Shi wrote: > When building non-preempt kernel (PREEMPT_NONE), PREEMPT_COUNT is still > enabled > if DEBUG_ATOMIC_SLEEP is enabled. But, it sounds not make sense to have > PREEMPT_COUNT set in non-preempt kernel. > > So, make PREEMPT_COUNT depend on PREEMPT here. > > Signed-off-by: Yang Shi <[email protected]> > --- > lib/Kconfig.debug | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug > index ecb9e75..a5b6e11 100644 > --- a/lib/Kconfig.debug > +++ b/lib/Kconfig.debug > @@ -1075,7 +1075,7 @@ config DEBUG_LOCKDEP > > config DEBUG_ATOMIC_SLEEP > bool "Sleep inside atomic section checking" > - select PREEMPT_COUNT > + select PREEMPT_COUNT if PREEMPT
OK, so do tell, how is it supposed to debug atomic sections without actually tracking atomic sections?
