[KERNEL] This is the official update thread for XU3/XU4

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[KERNEL] This is the official update thread for XU3/XU4

Post by mdrjr »

Please post here requests for features / modules on XU3/XU4 kernel.

Track changes here -> https://github.com/hardkernel/linux/tre ... xu3-3.10.y

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Re: [KERNEL] This is the official update thread for XU3

Post by meveric »

any particular reason, why joydev is deactivated again?
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Re: [KERNEL] This is the official update thread for XU3

Post by memeka »

or HID_APPLE? :))
I had to hack my keyboard and mouse in again :P

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »


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Re: [KERNEL] This is the official update thread for XU3

Post by roosemberth »

can you enable CONFIG_TASKSTATS, CONFIG_TASK_DELAY_ACCT, CONFIG_TASK_IO_ACCOUNTING for iotop?

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

Done :) Building it.

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Re: [KERNEL] This is the official update thread for XU3

Post by Hominidae »

Hi,

I am trying to get lxc-docker up&running on my XU3.
It appears there are some kernel configs not set, that are needed. (installed docker.io, but running a container failed).

Note:
I tried to create a new config based on the odroidxu3_defconfig supplied with the git trunk, but it also appears that in this config
the entry for User-Namespace "CONFIG_USER_NS" is completely missing (not part of the odroidxu3_defconfig at all, so using menuconfig to enable it will fail.).


This is what is needed, based on lxc-checkconfig (install lxc userland tools):

Code: Select all

root@odroid:~/odroidxu3-3.10.y# lxc-checkconfig 
--- Namespaces ---
Namespaces: enabled
Utsname namespace: enabled
Ipc namespace: enabled
Pid namespace: enabled
User namespace: missing
Network namespace: enabled
Multiple /dev/pts instances: missing

--- Control groups ---
Cgroup: enabled
Cgroup clone_children flag: enabled
Cgroup device: missing
Cgroup sched: enabled
Cgroup cpu account: enabled
Cgroup memory controller: missing
Cgroup cpuset: missing

--- Misc ---
Veth pair device: enabled
Macvlan: enabled
Vlan: enabled
File capabilities: enabled

Note : Before booting a new kernel, you can check its configuration
usage : CONFIG=/path/to/config /usr/bin/lxc-checkconfig

root@odroid:~/odroidxu3-3.10.y#
...and here's the config diff

Code: Select all

root@odroid:~/odroidxu3-3.10.y# diff ./arch/arm/configs/odroidxu3_defconfig ./arch/arm/configs/odroidxu3_defconfig.old 
112,114c112,113
< CONFIG_CGROUP_DEVICE=y
< CONFIG_CPUSETS=y
< CONFIG_PROC_PID_CPUSET=y
---
> # CONFIG_CGROUP_DEVICE is not set
> # CONFIG_CPUSETS is not set
117,118c116
< CONFIG_MEMCG=y
< # CONFIG_MEMCG_KMEM is not set
---
> # CONFIG_MEMCG is not set
124,125c122
< CONFIG_BLK_CGROUP=y
< # CONFIG_DEBUG_BLK_CGROUP is not set
---
> # CONFIG_BLK_CGROUP is not set
129d125
< CONFIG_USER_NS=y
134d129
< CONFIG_MM_OWNER=y
229d223
< # CONFIG_BLK_DEV_THROTTLING is not set
259d252
< # CONFIG_CFQ_GROUP_IOSCHED is not set 
1744c1737
< CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
---
> # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
root@odroid:~/odroidxu3-3.10.y# 
...the little box is now compiling the kernel...will see what comes out of that when I get up.

Edit:
nope, I can't get the CONFIG_USER_NS=y entry to stick with the config. Some dependencies are beyond my skills (last time I worked with linux kernels was in v0.9 and I am balding fast :D )
I really could use some help with this ...AFAIU something in the odroidxu3_defconfig is wrong, so menuconfig will not set this element at all.

Edit-2: OK, found a hint somewhere in a Slack forum..somethings wrong with config dependencies in kernel 3.10.y ....aparently, when you de-select the XFS filesystem, the User-Namespace element re-appears :o ....got a .config now...re-compiling

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Re: [KERNEL] This is the official update thread for XU3

Post by Hominidae »

OK, when setting LXC required configs, the CONFIG_USER_NS=y breaks the kernel.
It won't compile:

Code: Select all

kernel/sched/core.c: In function ‘cpu_cgroup_allow_attach’:
kernel/sched/core.c:7771:18: error: invalid operands to binary != (have ‘kuid_t’ and ‘kuid_t’)
       cred->euid != tcred->uid && cred->euid != tcred->suid)
                  ^
kernel/sched/core.c:7771:46: error: invalid operands to binary != (have ‘kuid_t’ and ‘kuid_t’)
       cred->euid != tcred->uid && cred->euid != tcred->suid)
                                              ^
..any chance to go to more upstream kernel, like the "true/actual" one from trusty (LXC is working in there, at least for amd64) ?

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

No. Upstream kernel doesn't boot a few of the 8-cores, doesn't have HMP scheduler.

I'll see what's wrong..

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Re: [KERNEL] This is the official update thread for XU3

Post by Hominidae »

...your help is very much appreciated, thanks!

Here's a close hint that it indeed should work: http://blog.tutum.co/2013/12/14/enablin ... -10-saucy/

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

I already found the issues :(
Just checking if I won't break anything with it.

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

Its fixed. Download the sources again.

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Re: [KERNEL] This is the official update thread for XU3

Post by Hominidae »

.....wow...that was blazing fast!

I configured the kernel for lxc-docker and it did indeed build :D

...need to run some tests and report back

Thanks again for your excellent support!

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Re: [KERNEL] This is the official update thread for XU3

Post by Hominidae »

Hi mdrjr,

I have successfully installed/used docker.
Can you permanently enable the configs explained here http://forum.odroid.com/viewtopic.php?f ... 638#p52786
in order to support the use of docker for ubuntu hosts, based on your kernel and without having the users to build their own?

TIA,
hominidae

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

Can you send me a PR or the list of the CONFIG_ symbols ?

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Re: [KERNEL] This is the official update thread for XU3

Post by Hominidae »

...yes, will do....asap, as I am currently traveling with no access to my systems.

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Re: [KERNEL] This is the official update thread for XU3

Post by MastaG »

Would CONFIG_SWAP=y be possible?

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

MastaG wrote:Would CONFIG_SWAP=y be possible?
Yes.. I'll add that tomorrow ;)

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Re: [KERNEL] This is the official update thread for XU3

Post by cnaumer »

Is there a reason that the ondemand governor is not in the kernel? I have a xu3 and would like to use it for a low power application. Or would there be a problem with the HMP scheduler?

Regards

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

cnaumer wrote:Is there a reason that the ondemand governor is not in the kernel? I have a xu3 and would like to use it for a low power application. Or would there be a problem with the HMP scheduler?

Regards
There's a problem right now with ondemand and hmp/cpu qos.. So its impossible right now..
But even with ondemand the power comsumption won't be much lower.

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Re: [KERNEL] This is the official update thread for XU3

Post by recliq »

Please enable uinput in kernel.
I tried to get sixad working on XU3 (for Sony DS3 Pad) and it requires uinput module, after compiling it myself everything now works.

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

Android or Ubuntu ?

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Re: [KERNEL] This is the official update thread for XU3

Post by recliq »

oh, sorry forgot to mention that, ubuntu please

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Re: [KERNEL] This is the official update thread for XU3

Post by recliq »

I see there's a new kernel for XU3, still no uinput module though... :/

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

Oh kill me :( I'm really sorry.. I've forgot that :( :( :(
Can you ping me in 3 days? I'll add for you :(

Right now I'm waiting to board for my flight back to Brazil :(

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Re: [KERNEL] This is the official update thread for XU3

Post by recliq »

No need to hurry, not that important, don't worry. I can just compile it myself for now.. ;)
Just would be nice to have it in future kernel versions.

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Re: [KERNEL] This is the official update thread for XU3

Post by Hominidae »

Hominidae wrote:Hi mdrjr,

I have successfully installed/used docker.
Can you permanently enable the configs explained here http://forum.odroid.com/viewtopic.php?f ... 638#p52786
in order to support the use of docker for ubuntu hosts, based on your kernel and without having the users to build their own?

TIA,
hominidae
mdrjr wrote:Can you send me a PR or the list of the CONFIG_ symbols ?

...bump!
I did send you a PM with the symbols some weeks ago...don't know if you have found the time but if I interpret the commits on git correctly, you did not.

...about to try the updated Ubuntu with XBMC soon :D
it would simply be great to have Docker on this too....

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

My fear here is to disable XFS and someone is using it :(
I'll break this person boot :(

I need more time to check if there's any patch that enables both to be built together :)

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Re: [KERNEL] This is the official update thread for XU3

Post by Hominidae »

Ah, right!

...in fact the ARCH image comes without xfs module indeed.

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Re: [KERNEL] This is the official update thread for XU3

Post by thepotter »

mdrjr wrote:
cnaumer wrote:Is there a reason that the ondemand governor is not in the kernel? I have a xu3 and would like to use it for a low power application. Or would there be a problem with the HMP scheduler?

Regards
There's a problem right now with ondemand and hmp/cpu qos.. So its impossible right now..
But even with ondemand the power comsumption won't be much lower.

So, is there no way to change a frequency?

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

Sigh.....

(for A7)
echo frequency_in_kHz > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq

(for A15)
echo frequency_in_kHz > /sys/devices/system/cpu/cpu4/cpufreq/scaling_max_freq

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Re: [KERNEL] This is the official update thread for XU3

Post by thepotter »

Thanks, mdrjr.

One more question is that [scaling_available_governors] returns only "performance". In my Ubuntu machine, it returns "ondemand conservative powersave userspace performance". Do you know how to change governor? Do we need to install another OS? Sorry that I have lack of background of governor.

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

Only performance is working....

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Re: [KERNEL] This is the official update thread for XU3

Post by dony »

So do I have to use only performance?
I need make a experiment with using ondemand, powersave, governer.....
How can I do it?

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

You go ahead and fix the devfreq so it works. :)

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Re: [KERNEL] This is the official update thread for XU3

Post by dony »

um.... I tried and I checked the available_freq_governor.... that was only performance...

How can I change the governor to powersave or interactive???

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

Rebuild the kernel with supports for it.
Btw, this is not the thread for this discussion.

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Re: [KERNEL] This is the official update thread for XU3

Post by dony »

As I know, the kernel which hardkernel provided doesnt include another governor code....
and that is only the kernel to support HMP scheduling on XU3...isnt it?

Do you mean I am supposed to rebuild the kernel code with modifying configuration to use another governor ?
thats all?

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Re: [KERNEL] This is the official update thread for XU3

Post by memeka »

yes you can select additional governors in the kernel configuration.
the problem is currently on the xu3 only performance works well - that's why the others aren't enabled in the default config.

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Re: [KERNEL] This is the official update thread for XU3

Post by dony »

One more thing..
could you let me know why the other governor has problem to work on JUST Xu3 even though many os is using interactive or ondemand typically?
what is the main problem???? cuz of XU3's hardware characteristics?

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

HMP Scheduler.

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Re: [KERNEL] This is the official update thread for XU3

Post by hamish »

hi

can the SCSI driver be activated, e.g. to enable connecting a USB CDROM?

currently (in 14.04 as supplied with an XU3) the config file has:

# CONFIG_BLK_DEV_SR is not set

https://raw.githubusercontent.com/hardk ... _defconfig

so I'm not getting /dev/sr0 for example...

thanks!

h

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Re: [KERNEL] This is the official update thread for XU3

Post by meveric »

i've just build a kernel with CDROM support and tested it with XBMC works perfectly fine. You can download it from my repository if you don't want to wait.
Donate to support my work on the ODROID GameStation Turbo Image for U2/U3 XU3/XU4 X2 X C1 as well as many other releases.
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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

Done, should be live in 30minutes.

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Re: [KERNEL] This is the official update thread for XU3

Post by hamish »

SCSI USB CDROM working now, thanks for the quick fix!
h

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Re: [KERNEL] This is the official update thread for XU3

Post by wombat »

Please enable POSIX_MQUEUE in the default configs, as without it, NILFS2 cleaner daemon won't start.

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Re: [KERNEL] This is the official update thread for XU3

Post by mdrjr »

wombat wrote:Please enable POSIX_MQUEUE in the default configs, as without it, NILFS2 cleaner daemon won't start.
Added :)

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Re: [KERNEL] This is the official update thread for XU3

Post by otherush »

I saw earlier in the thread you added uinput support for ubuntu. Can you also add this for android? DroidMote depends on this

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Re: [KERNEL] This is the official update thread for XU3

Post by odroid »

otherush wrote:I saw earlier in the thread you added uinput support for ubuntu. Can you also add this for android? DroidMote depends on this
"uinput" included Android image will be released soon.

otherush
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Re: [KERNEL] This is the official update thread for XU3

Post by otherush »

Fantastic! Thank you so much

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