Re: dcache_rcu [performance results]

Sam Ravnborg
2002-11-02T21:10:50Z

On Sat, Nov 02, 2002 at 07:41:34PM +0000, Linus Torvalds wrote:
> >Kernel compilation actually uses absolute pathnames e.g. for dependency
> >checking.
>
> This used to be true, but it shouldn't be true any more. TOPDIR should
> be gone, and everything should be relative paths (and all "make"
> invocations should just be done from the top kernel directory).
>
> But yes, it certainly _used_ to be true (and hey, maybe I've missed some
> reason for why it isn't still true).
If there is any dependency left on absolute paths thats a bug.

I have tested this by doing a full make and copy the tree.
When executing make again nothing got rebuild - so it is OK for the
general case.

But please report it if you see something in contradiction with that.

Sam