Hi Bruce,
> What do you have in your "defconfig" ? I'm about to push patches that > will make enabling sched_dealine a KERNEL_FEATURE option, which makes > it even easier to use. > Here is my defconfg https://github.com/insop/meta-dl/blob/sched-dl-V7/recipes-kernel/linux/linux/defconfig I've asked this to Juri, too. So this is for the config for sched_deadline "Every defconfig kernel should compile and work fine (given HZ=1000, NO_HZ not set and HRTIMERS=y)" And here are the CONFIG that should set (Juri, please let us know if I miss anything) ------ CONFIG_EXPERIMENTAL = y CONFIG_CGROUPS = y CONFIG_CGROUP_SCHED = n CONFIG_HIGH_RES_TIMERS = y CONFIG_PREEMPT = y CONFIG_PREEMPT_RT = y CONFIG_HZ_1000 = y # CONFIG_NO_HZ is not set ------ > But in the meantime, if you want to enable the support on a yocto BSP, > you can change your "defconfig" to be "sched-deadline.cfg" and only > put the kernel options required to enable the feature. I will pick up yocto-3.8 bb file from "master" branch and will try this way shortly. Regards, Insop > > Cheers, > > Bruce > > >> >> PV = "3.8" >> -PR = "dl7" >> +PR = "dl" >> >> KSRC ?= "" >> S = '${@base_conditional("KSRC", "", "${WORKDIR}/git", "${KSRC}", d)}' >> >> Thank you. >> >> Insop >> >> On Wed, Mar 6, 2013 at 8:00 PM, Bruce Ashfield >> <bruce.ashfi...@windriver.com> wrote: >>> >>> On 13-03-05 1:54 AM, Insop Song wrote: >>>> >>>> >>>> Hi, >>>> >>>> I am preparing a new meta layer for testing and promoting a >>>> sched_deadline scheduler, called "meta-dl". I am planning to add >>>> scheduler testing tools and different kernel versions as well. >>>> - http://insop.github.com/meta-dl/ >>> >>> >>> >>> FYI: I've already merged and staged sched_dl in linux-yocto_3.8: >>> >>> >>> http://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto-3.8/log/?h=standard/edf >>> >>> I'll be supporting it there as well, so it makes sense to coordinate >>> our efforts around kernels, configurations and benchmarks. >>> >>> Juri and I talked about this @ ELC a few weeks ago (I've added >>> him to the cc as well), and rather than hiding sched_deadline >>> kernel support in a custom kernel layer, I'd like to try and get >>> more eyes on it via linux-yocto .. so if we can all coordinate our >>> efforts here, that would be much better. >>> >>> Cheers, >>> >>> Bruce >>> >>>> >>>> With the help of hands-on kernel lab (thank you Tom and Darren), I am >>>> able to make kernel with sched_deadline enabled. >>>> >>>> >>>> Now, I am having some trouble of adding testing tools to this meta-dl, >>>> and hope I can get some help from you. >>>> >>>> - problem: adding a new software into my meta-dl layer >>>> >>>> - symtom and questions? >>>> 1. bitbake core-image-minimal (normal image build) won't include the >>>> additional program that I listed in .bb file below >>>> 2. If I do "bitbake schedtool-dl -c install" it builds and install, >>>> but at "i586" location instead of my machine staging rootfs >>>> (dl-qemux86) >>>> >>>> >>>> >>>> - Here is my .bb file that pulls an additional program. >>>> >>>> >>>> https://github.com/insop/meta-dl/blob/sched-dl-V7/recipes-tools/schedtool-dl/schedtool-dl.bb >>>> === >>>> DESCRIPTION = "schedtool-dl (scheduler test tool) for deadline >>>> scheduler" >>>> HOMEPAGE = "https://github.com/insop/schedtool-dl"; >>>> SECTION = "base" >>>> LICENSE = "GPLv2" >>>> LIC_FILES_CHKSUM = >>>> "file://Makefile;endline=55;md5=e4b4e8ed9c2132e1d727a1bb5e3bd984" >>>> PR = "r1" >>>> >>>> SRC_URI = "git://github.com/insop/schedtool-dl.git;protocol=git" >>>> SRCREV = "${AUTOREV}" >>>> >>>> S = "${WORKDIR}/git" >>>> >>>> do_compile() { >>>> oe_runmake >>>> } >>>> >>>> do_install() { >>>> oe_runmake install DESTDIR=${D} >>>> } >>>> >>>> PARALLEL_MAKE = "" >>>> >>>> BBCLASSEXTEND = "native" >>>> >>>> COMPATIBLE_MACHINE_dl-qemux86 = "dl-qemux86" >>>> ==== >>>> >>>> >>>> - I've updated my conf/layer.conf file to include above file >>>> https://github.com/insop/meta-dl/blob/sched-dl-V7/conf/layer.conf >>>> ==== >>>> # We have a conf and classes directory, add to BBPATH >>>> BBPATH := "${BBPATH}:${LAYERDIR}" >>>> >>>> # We have a recipes directory, add to BBFILES >>>> BBFILES := "${BBFILES} ${LAYERDIR}/recipes-*/*/*.bb \ >>>> ${LAYERDIR}/recipes-*/*/*.bbappend" >>>> >>>> BBFILE_COLLECTIONS += "dl-qemux86" >>>> BBFILE_PATTERN_dl-qemux86 := "^${LAYERDIR}/" >>>> BBFILE_PRIORITY_dl-qemux86 = "6" >>>> ===== >>>> >>>> >>>> >>>> Thank you. >>>> >>>> Regards, >>>> >>>> Insop >>>> >>>> >>>> - ref: >>>> 1. sched_deadline: >>>> https://events.linuxfoundation.org/events/linuxcon-europe/song >>>> 2. sched_deadline: >>>> >>>> >>>> http://events.linuxfoundation.org/images/stories/slides/elc2013_kobayashi.pdf?a >>>> _______________________________________________ >>>> yocto mailing list >>>> yocto@yoctoproject.org >>>> https://lists.yoctoproject.org/listinfo/yocto >>> >>> >>> >> _______________________________________________ >> yocto mailing list >> yocto@yoctoproject.org >> https://lists.yoctoproject.org/listinfo/yocto >> > _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto
