[OE-core] [PATCH] kernel: Use hardlinks for do_populate_sysroot for speed

[Bruce Ashfield]

On 13-11-08 10:55 AM, Richard Purdie wrote:
> On Fri, 2013-11-08 at 10:41 -0500, Bruce Ashfield wrote:
>> On 13-11-08 10:18 AM, Richard Purdie wrote:
>>> The kernel tree is large and doesn't need to be copied. Override
>>> the default sysroot handling function to use a hardlink copying
>>> function in python.
>>>
>>> This commit also drops the copying of the /lib directory which
>>> just contains the kernel modules. We never use those in the sysroot
>>> so there is little point in carrying those around.
>>>
>>> For linux-yocto this takes the do_populate_sysroot time 24s -> 14s.
>>
>> Fantastic. One less thing for me to dig into later. I thought this
>> was already in place, so I'm pleasantly surprised that there was a
>> time savings to be found!
>
> I was somewhat surprised too.
>
> We still need to optimise what we install in do_install since that is
> where significant gains can still be made.

Agreed. I started some changes in that area right after ELC-e, I'll
try and get them out sooner rather than later.

Bruce

>
> Cheers,
>
> Richard
>