linux-kernel - Re: [PATCH] x86: arch_probe_nr

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Message-ID: <20090114201152.GA31581@elte.hu>
Date:	Wed, 14 Jan 2009 21:11:52 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Mike Travis <travis@....com>
Cc:	Yinghai Lu <yinghai@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: arch_probe_nr_irqs

* Mike Travis <travis@....com> wrote:

>     mkdir linux-2.6-cpus4096-for-ingo
>     cd linux-2.6-cpus4096-for-ingo
>     git-init-db
>     git-remote add linus git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
>     git-remote add tip git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git
>     git-remote add my-cpus4096 git://git.kernel.org/pub/scm/linux/kernel/git/travis/linux-2.6-cpus4096-for-ingo.git
>     git-remote add push-cpus4096 ssh://master.kernel.org/pub/scm/linux/kernel/git/travis/linux-2.6-cpus4096-for-ingo.git
>     git-config --add remote.push-cpus4096.skipDefaultUpdate true
>     git-remote update

hm, why do you do all this? You should just create a -git based repo on 
kernel.org:

  cd /pub/scm/linux/kernel/git/travis/
  rm -rf linux-2.6-cpus4096-for-ingo
  git-clone --bare --shared ../torvalds/linux-2.6.git linux-2.6-cpus4096-for-ingo

that's all - you dont ever have to touch the master.kernel.org bits on 
that box anymore. Then you can clone it (via ssh) to your local box:

  git clone ssh://master.kernel.org/pub/scm/linux/kernel/git/travis/linux-2.6-cpus4096-for-ingo

that's it - you are all set!

Now you can go into your repo, and do a few convenience things like:

     git-remote add linus git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
     git-remote add tip git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git

     git remote update

But these dont ever go to your master.kernel.org tree. Your local 'master' 
branch is what you will push out most of the time.

To prepare a tree for me, if you want to base it on the latest 
tip/cpus4096, you do this:

     git checkout master
     git reset --hard tip/cpus4096

that's all. You can then (force-)push this out to your kernel.org repo 
via:

     git push -f origin master

and you can manipulate your master branch and push it out to your 
master.kernel.org repo whenever you want to.

If you want a separate 'release' branch, you can do it too:

   git checkout master

   [ prepare your master branch with the bits. ]

   git checkout -b for-ingo
   git push origin for-ingo

   [ git checkout master ]

That's it. If the for-ingo branch already exists and you know that it 
contains no bits that i might pull in parallel with you updating it, you 
can force-push it as well:

   git checkout for-ingo
   git reset --hard master          # set it to your release bits
   git push -f origin for-ingo

that's it really.

	Ingo
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