Messages in this thread | | | Date | Mon, 23 May 2011 18:19:14 +0200 | From | Sam Ravnborg <> | Subject | Re: [bloat] Measuring header file bloat effects on kernel build performance: a more than 2x slowdown ... |
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> > Such thing happen due to: > > - header files only get added, almost never removed > > The key thing was that the build did not break when prefetch.h was kept > dangling. Not sure what to do about that - for humans a dangling header is > absolutely non-obvious to find - we'd need tooling help.
Long time ago I discussed this briefly with Christopher Li, and he hacked support for this in sparse.
The branch is still around:
http://git.kernel.org/?p=devel/sparse/chrisl/sparse.git;a=shortlog;h=unused-include-files
I never got around to play with it for various reasons. IIRC it will list include files not used in _current_ configuration, so use if CONFIG_ etc. may give different results.
Sam
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