Re: [PATCH 0/1] poky-tiny.conf: set PREFERRED_VERSION_linux-yocto-tiny to 4.4

[Robert Yang <liezhi.yang@windriver.com>]

On 04/11/2016 09:36 PM, Khem Raj wrote:
>
>> On Apr 11, 2016, at 9:24 AM, Bruce Ashfield <bruce.ashfield@windriver.com> wrote:
>>
>> On 2016-04-10 10:40 PM, Robert Yang wrote:
>>>
>>>
>>> On 04/11/2016 09:52 AM, Bruce Ashfield wrote:
>>>> On 2016-04-10 10:22 AM, Robert Yang wrote:
>>>>> The following changes since commit
>>>>> 778121ab844af623a215430ba579a5fb3947928b:
>>>>>
>>>>>    local.conf.sample: Make it possible to override EXTRA_IMAGE_FEATURES
>>>>> (2016-04-09 23:00:46 +0100)
>>>>>
>>>>> are available in the git repository at:
>>>>>
>>>>>    git://git.pokylinux.org/poky-contrib rbt/kernel
>>>>>    http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=rbt/kernel
>>>>>
>>>>> Robert Yang (1):
>>>>>    poky-tiny.conf: set PREFERRED_VERSION_linux-yocto-tiny to 4.4
>>>>>
>>>>
>>>> Can you provide some bootlogs ? Size information, etc ? When we jump
>>>> this between kernel versions, we need to log some sort of information
>>>> about functionality and the size of the image.
>>>>
>>>> I've been carrying this support forward, but in 4.4, we did change
>>>> some of the kernel configs, so it would be good to see what sort of
>>>> size delta we are talking about.
>>>
>>> * Size:
>>> $ du -s tmp/deploy/images/qemux86/bzImage*
>>> 2664
>>> tmp/deploy/images/qemux86/bzImage--4.4.3+git0+770996a263_73481a3abd-r0-qemux86-20160411015757.bin
>>>
>>> 2572
>>> tmp/deploy/images/qemux86/bzImage--4.1.18+git0+b9023d4c8f_f5b08e95bc-r0-qemux86-20160411022834.bin
>>>
>>>
>>> We can see that 4.1 and 4.4 are nearly the same (92K different).
>>
>> Excellent. That is good news.
>
> I looked at it briefly, and I see that we don’t have n/w enabled and this kernel is sort of crippled if
> we don’t have  /proc/sys/ can you enable CONFIG_PROC_SYSCTL and see how much size it increased. Because

Good catch, I tried it, for 4.4:
2664K -> 2680K

16K has increased, the similar to 4.1 (2572 -> 2588), neither of them has /proc/sys.

I will send patches for updating the config, Bruce can decide whether
merge them or not.

// Robert

> this would pave way to enable busybox-mdev for device management among other things you could do
> with sysctls
>
>>
>>>
>>> And:
>>> $ runqemu qemux86 ramfs
>>> works well. Please see the boot logs in the attachment.
>>
>> perfect. Thanks!
>>
>>>
>>> And poky-tiny only supports qemux86 + cpio.gz atm, I've filed two
>>> enhancements
>>> for YP 2.2 to support more machines and fs types:
>>>
>>
>> As long as it doesn't add too much extra functionality, it makes sense.
>> Tiny turns pretty much everything off on purpose, since it forms a
>> baseline that we do expect users to extend or add their own configs. It
>> is much easier to add, then to subtract.
>>
>> Thanks for the extra details here. As long as RP is willing to merge
>> this patch for the 2.1 release, I have no objections.
>>
>> Bruce
>>
>>> https://bugzilla.yoctoproject.org/show_bug.cgi?id=9428
>>>
>>> https://bugzilla.yoctoproject.org/show_bug.cgi?id=9429
>>>
>>> // Robert
>>>
>>>>
>>>> Bruce
>>>>
>>>>>   meta-poky/conf/distro/poky-tiny.conf | 2 +-
>>>>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>>>>
>>>>
>>>>
>>
>> --
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