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author | Andreas Gruenbacher <agruen@suse.de> | 2008-12-01 14:21:01 -0800 |
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committer | Sam Ravnborg <sam@ravnborg.org> | 2008-12-03 22:33:11 +0100 |
commit | 64e6c1e12372840e7caf8e25325a9e9c5fd370e6 (patch) | |
tree | aa47aa4e170dd4bb39c99cc7356231e2c61d64d2 /scripts/genksyms/parse.h_shipped | |
parent | a680eedc6c621c75695c68198533fc3c98f4053b (diff) | |
download | op-kernel-dev-64e6c1e12372840e7caf8e25325a9e9c5fd370e6.zip op-kernel-dev-64e6c1e12372840e7caf8e25325a9e9c5fd370e6.tar.gz |
genksyms: track symbol checksum changes
Sometimes it is preferable to avoid changes of exported symbol checksums
(to avoid breaking externally provided modules). When a checksum change
occurs, it can be hard to figure out what caused this change: underlying
types may have changed, or additional type information may simply have
become available at the point where a symbol is exported.
Add a new --reference option to genksyms which allows it to report why
checksums change, based on the type information dumps it creates with the
--dump-types flag. Genksyms will read in such a dump from a previous run,
and report which symbols have changed (and why).
The behavior can be controlled for an entire build as follows: If
KBUILD_SYMTYPES is set, genksyms uses --dump-types to produce *.symtypes
dump files. If any *.symref files exist, those will be used as the
reference to check against. If KBUILD_PRESERVE is set, checksum changes
will fail the build.
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>
Diffstat (limited to 'scripts/genksyms/parse.h_shipped')
0 files changed, 0 insertions, 0 deletions