As it turns out, Ross is reporting a big performance degradation in the kernel in footprint, packaging and build time.
It completely slipped my mind when looking at this commit, that we went through a split two years ago for that very same issue. For now, I'm going to revert this, and then work systemtap properly into the developer kernel type. The issue is that the standard kernel includes systemtap by default (it probably shouldn't), and hence is picking up the DEBUG_KERNEL option .. and that's causing the issues. For now, you can build the developer kernel type, or add the developer kernel configuration fragment via a bbappend, and you'll have a functional systemtap. I can move systemtap out of the standard kernel and only into the developer kernel, since as you say, it isn't functional without this option. But, that ktype hasn't gotten a lot of mileage (despite being around for two years), so I'll need to run some tests before I can truly move the fragment over and confirm that it works. So again, for now, I'll revert this, but will work on getting the ktypes fixed up as well. Cheers, Bruce commit a7b57bb54cace686911faae9a8eace3b9cbf8145 Author: California Sullivan <california.l.sulli...@intel.com> Date: Wed Feb 17 16:47:10 2016 -0800 ktypes: add developer ktype The developer ktype enables EMBEDDED, EXPERT, and DEBUG_KERNEL, opening up more kernel options and setting some defaults. Signed-off-by: California Sullivan <california.l.sulli...@intel.com> Signed-off-by: Bruce Ashfield <bruce.ashfi...@windriver.com> :000000 100644 000000000000... ee04ec720188... A ktypes/developer/developer.cfg :000000 100644 000000000000... cf2c0e6519d5... A ktypes/developer/developer.scc On Sat, Mar 3, 2018 at 9:03 PM, Victor Kamensky <kamen...@cisco.com> wrote: > Need to enable CONFIG_KERNEL_DEBUG in systemtap feature, otherwise > CONFIG_DEBUG_INFO set by systemtap.cfg does not have any effect since > it depends on CONFIG_KERNEL_DEBUG and is set off in resulting config. > So systemtap cannot find DWARF information in resulting kernel. > > Signed-off-by: Victor Kamensky <kamen...@cisco.com> > --- > features/systemtap/systemtap.cfg | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/features/systemtap/systemtap.cfg > b/features/systemtap/systemtap.cfg > index acc2405..858447c 100644 > --- a/features/systemtap/systemtap.cfg > +++ b/features/systemtap/systemtap.cfg > @@ -1,4 +1,5 @@ > CONFIG_RELAY=y > +CONFIG_DEBUG_KERNEL=y > CONFIG_DEBUG_INFO=y > CONFIG_DEBUG_FS=y > CONFIG_MODULES=y > -- > 2.7.4 > > -- > _______________________________________________ > linux-yocto mailing list > linux-yocto@yoctoproject.org > https://lists.yoctoproject.org/listinfo/linux-yocto -- "Thou shalt not follow the NULL pointer, for chaos and madness await thee at its end" -- _______________________________________________ linux-yocto mailing list linux-yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/linux-yocto