• Andreas Gruenbacher's avatar
    genksyms: allow to ignore symbol checksum changes · 5dae9a55
    Andreas Gruenbacher authored
    This adds an "override" keyword for use in *.symvers / *.symref files.
    When a symbol is overridden, the symbol's old definition will be used for
    computing checksums instead of the new one, preserving the previous
    checksum.  (Genksyms will still warn about the change.)
    This is meant to allow distributions to hide minor actual as well as fake
    ABI changes.  (For example, when extra type information becomes available
    because additional headers are included, this may change checksums even
    though none of the types used have actully changed.)
    This approach also allows to get rid of "#ifdef __GENKSYMS__" hacks in the
    code, which are currently used in some vendor kernels to work around
    checksum changes.
    Signed-off-by: default avatarAndreas Gruenbacher <agruen@suse.de>
    Cc: Randy Dunlap <randy.dunlap@oracle.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
genksyms.h 2.49 KB