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authorAndreas Gruenbacher <agruen@suse.de>2008-07-31 00:03:49 +0200
committerSam Ravnborg <sam@ravnborg.org>2008-07-31 23:00:25 +0200
commit94aa3d716ee0244cc5b9f2ab3745aed5fdfa30e0 (patch)
tree0003889647cfdbabb5db12555eb5967177e226fc /virt
parent11ddad396086f8d1dfcb0056dc9d65d228f755c1 (diff)
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kbuild: genksyms parser: fix the __attribute__ rule
We are having two kinds of problems with genksyms today: fake checksum changes without actual ABI changes, and changes which we would rather like to ignore (such as an additional field at the end of a structure that modules are not supposed to touch, for example). I have thought about ways to improve genksyms and compute checksums differently to avoid those problems, but in the end I don't see a fundamentally better way. So here are some genksyms patches for at least making the checksums more easily manageable, if we cannot fully fix them. In addition to the bugfixes (the first two patches), this allows genksyms to track checksum changes and report why a checksum changed (third patch), and to selectively ignore changes (fourth patch). This patch: Gcc __attribute__ definitions may occur repeatedly, e.g., static int foo __attribute__((__used__)) __attribute__((aligned (16))); The genksyms parser does not understand this, and generates a syntax error. Fix this case. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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