[yocto] couple questions about kernel-dev manual, section 2.6, "emenlow" branch

[Robert P. J. Day]

On Mon, 27 Feb 2017, Bruce Ashfield wrote:

> On Mon, Feb 27, 2017 at 4:54 AM, Robert P. J. Day <rpjday at crashcourse.ca> wrote:
>
>         still working my way through the kernel-dev manual, and a
>       couple oddities in section 2.6.
>
>         first, the example given uses the (alleged) standard/emenlow
>       branch, which i'm pretty sure doesn't exist anymore, yes? if
>       one is going to use an example, i suggest one base that
>       example on one of the YP reference BSPs that's guaranteed to
>       always exist, such as beagleboard or arm-versatile-926ejs.
>
> I can't say that one will always exist .. but the arm-versatile
> branch has been around for years, and until the qemuarm target
> changes to use something else, it will continue to be around.

  i might have skipped those possibilities since they produced no
output, which made the examples rather vacuous. :-) i'll check again,
want to make sure one picks a branch that actually generates output.

>         next, i'm assuming that one would be running those "git
>       whatchanged" commands in the project directory, under
>       tmp/work-shared/<target>/kernel-source, yes? it's just not
>       made clear in that section where a reader would be doing those
>       things.
>
> Correct.

  ok, i will add that note to the imminent patch.

>         finally, section 2.6.1 reads:
>
>       "Here is an example that looks at what has changed in the
>       emenlow branch of the linux-yocto-3.19 kernel."

>       what does the kernel version of 3.19 have to do with those git
>       commands? how do those commands depend on the particular
>       version of the linux-yocto recipe you're using?
>
> At one point I was changing the branching structure, and the kernel
> meta data was in the same repo as the kernel source, so that could
> change some of the commands.
>
> But nothing has changed on that front in quite some time, so the
> answer is "they don't depend on the version you are using" .. so the
> version reference could be dropped.

  roger that.

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

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