[linux-yocto] [yocto] A question on adding a new program to a new meta layer

[Insop Song]

Bruce,

1. I've tried this, which is just add edf-stage.scc.
And it failed with the following messages.

----
diff --git a/meta/recipes-kernel/linux/linux-yocto_3.8.bb
b/meta/recipes-kernel/linux/linux-yocto_3.8.bb
index 7c1dff7..3397eea 100644
--- a/meta/recipes-kernel/linux/linux-yocto_3.8.bb
+++ b/meta/recipes-kernel/linux/linux-yocto_3.8.bb
@@ -24,6 +24,7 @@ COMPATIBLE_MACHINE =
"qemuarm|qemux86|qemuppc|qemumips|qemux86-64"

 # Functionality flags
 KERNEL_FEATURES_append = " features/netfilter/netfilter.scc"
+KERNEL_FEATURES_append = " taging/edf-stage.scc"
 KERNEL_FEATURES_append_qemux86=" cfg/sound.scc"
 KERNEL_FEATURES_append_qemux86-64=" cfg/sound.scc"
 KERNEL_FEATURES_append_qemux86=" cfg/paravirt_kvm.scc"

----

| To force apply this patch, use 'guilt push -f'
| [ERROR] unable to complete push
| pending patches are:
| links/kernel-cache/arch/arm/v7-A15/ARM-LPAE-Invalidate-the-TLB-for-module-addresses-dur.patch
| links/kernel-cache/arch/arm/arm-ARM-EABI-socketcall.patch
| ERROR. could not update git tree
| ERROR. Could not apply patches for qemux86.
|        Patch failures can be resolved in the devshell (bitbake -c
devshell linux-yocto)
| ERROR: Function failed: do_patch (see
/home/insop/mybuilds/master/tmp/work/qemux86-poky-linux/linux-yocto/3.8+gitAUTOINC+c2ed0f16fdec628242a682897d5d86df4547cf24_b170394a475b96ecc92cbc9e4b002bed0a9f69c5-r4.0/temp/log.do_patch.19405
for further information)
ERROR: Task 831
(/home/insop/poky/meta/recipes-kernel/linux/linux-yocto_3.8.bb,
do_patch) failed with exit code '1'
NOTE: Tasks Summary: Attempted 1611 tasks of which 1606 didn't need to
be rerun and 1 failed.
No currently running tasks (1611 of 1648)

---

2. if I do this, it builds and seems okay, but how to set so that your
"edf.cfg" can be applied as part of bitbaking?

diff --git a/meta/recipes-kernel/linux/linux-yocto_3.8.bb
b/meta/recipes-kernel/linux/linux-yocto_3.8.bb
index 7c1dff7..7311ea7 100644
--- a/meta/recipes-kernel/linux/linux-yocto_3.8.bb
+++ b/meta/recipes-kernel/linux/linux-yocto_3.8.bb
@@ -1,12 +1,14 @@
 require recipes-kernel/linux/linux-yocto.inc

 KBRANCH_DEFAULT = "standard/base"
-KBRANCH = "${KBRANCH_DEFAULT}"
+KBRANCH_EDF = "standard/edf"
+KBRANCH = "${KBRANCH_EDF}"

 SRCREV_machine_qemuarm ?= "351d133943b50a9dfeee07661d44254722a19f04"
 SRCREV_machine_qemumips  ?= "d529d082041142435587bd442b1235dbe1c72950"
 SRCREV_machine_qemuppc ?= "8dcd155ad408658e9180d1630da2ac7e0ee70542"
-SRCREV_machine_qemux86 ?= "b170394a475b96ecc92cbc9e4b002bed0a9f69c5"
+#SRCREV_machine_qemux86 ?= "b170394a475b96ecc92cbc9e4b002bed0a9f69c5"
+SRCREV_machine_qemux86 ?= "${AUTOREV}"
 SRCREV_machine_qemux86-64 ?= "b170394a475b96ecc92cbc9e4b002bed0a9f69c5"
 SRCREV_machine ?= "b170394a475b96ecc92cbc9e4b002bed0a9f69c5"
 SRCREV_meta ?= "c2ed0f16fdec628242a682897d5d86df4547cf24"
insop at sputnik ~/poky(master) $


3. one way that I've tried is to pull out edf.cfg from yocto-kernel to
"meta-realtime/recipes-kernel". (see other email more details).
Is it okay?

https://github.com/insop/meta-realtime/blob/master/recipes-kernel/linux/linux-yocto_3.8.bbappend

Thank you.

Insop





>>
>> I actually have:
>>
>> CONFIG_HIGH_RES_TIMERS = y
>> CONFIG_PREEMPT = y
>> CONFIG_HZ_1000 = y
>> # CONFIG_NO_HZ is not set
>>
>> all the other options are not required (anymore, as the PREEMPT_RT,
>> since SCHED_DEADLINE is currently based on 3.8-rc7).
>
>
> Thanks Juri,
>
> (I switched to linux-yocto for the mailing list to spare the yocto
> general list that I've been spamming with kernel talk :)
>
> I changed my fragment here to the settings you list above:
>
> http://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto-3.8/commit/?h=meta&id=eb882c36d6b71a029cfbc7809568ffe9abdc65ea
>
> And will get around to taking it for a spin shortly.
>
> Cheers,
>
> Bruce