On Mon, Dec 01, 2008 at 02:21:01PM -0800, akpm@xxxxxxxxxxxxxxxxxxxx wrote: > From: Andreas Gruenbacher <agruen@xxxxxxx> > > 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@xxxxxxx> > Cc: Sam Ravnborg <sam@xxxxxxxxxxxx> > Cc: Randy Dunlap <randy.dunlap@xxxxxxxxxx> > Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Applied. Sam -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
