[yocto] CONFIG_LATENCYTOP fragment

[Robert Berger]

Hi,

That's what I currently use:

meta-yocto-bsp    = "heads/jethro:347347ad78c4c2502e83f2c2adff61f1ba8fed8b"
multi-v7-ml       =
"heads/jethro-training-v4.1.x:e297c4f7c1baf38faecd6a2fcaa4cab0acea7dc1"

The idea is to use a stable kernel + multi_v7_defconfig and add to this
patches/configuration fragments.

I can add like this ikconfig, oprofile, posix_mqueues[0], but I don't
manage to get CONFIG_LATENCYTOP on top of multi_v7_defconfig.

In order to produce the config fragments I do:

bitbake linux-yocto-custom -c menuconfig

There I do my adjustments (disable SMP and enable LATENCYTOP)

bitbake linux-yocto-custom -c diffconfig, which spits out a
configuration fragment[1]

I did a new KTYPE[2][3] which seems to be picked up:

cat log.do_patch
DEBUG: Executing shell function do_patch
[INFO] validating against known patches  (multi-v7-ml-not-smp-deb-meta)
   mark --> multi-v7-ml-not-smp-deb.scc
   mark --> not-smp-deb.scc
   mark --> latencytop.scc
   mark <-- latencytop.scc
   mark <-- not-smp-deb.scc
   mark <-- multi-v7-ml-not-smp-deb.scc
   mark --> patch_marker.scc
   mark <-- patch_marker.scc
   mark -->
gen_tmpyocto-autobuilderyocto-autobuilderyocto-workercustom-jethro-multi-v7-core-image-minimal-sato-sdk-adtbuildbuildtmpworkmulti_v7_ml-poky-linux-gnueabilinux-yocto-custom4.4-rc5-custom-ml-not-smp-deb+gitAUTOINC+9f9499ae8e-r0_desc.scc
   mark <--
gen_tmpyocto-autobuilderyocto-autobuilderyocto-workercustom-jethro-multi-v7-core-image-minimal-sato-sdk-adtbuildbuildtmpworkmulti_v7_ml-poky-linux-gnueabilinux-yocto-custom4.4-rc5-custom-ml-not-smp-deb+gitAUTOINC+9f9499ae8e-r0_desc.scc
   mark --> multi-v7-ml-user-patches.scc
   mark <-- multi-v7-ml-user-patches.scc

<=== processed .meta/cfg/scratch/multi-v7-ml-not-smp-deb-meta in 0 seconds
DEBUG: Shell function do_patch finished

... but SMP is still on.

What's the trick?

Regards,

Robert

[0]
https://github.com/RobertBerger/meta-mainline/tree/jethro-training-v4.1.x/multi-v7-ml/recipes-kernel/linux/config/multi-v7-ml-base/features

[1]
https://github.com/RobertBerger/meta-mainline/tree/jethro-training-v4.1.x/multi-v7-ml/recipes-kernel/linux/config/multi-v7-ml-base/features/latencytop

[2]
https://github.com/RobertBerger/meta-mainline/tree/jethro-training-v4.1.x/multi-v7-ml/recipes-kernel/linux/config/multi-v7-ml-base/ktypes/not-smp-deb

[3]
https://github.com/RobertBerger/meta-mainline/blob/jethro-training-v4.1.x/multi-v7-ml/recipes-kernel/linux/config/multi-v7-ml-common/bsp/multi-v7-ml/multi-v7-ml-not-smp-deb.scc..."Software
is like sex, it's better when it's free"

My public pgp key is available,at:
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x90320BF1