Update modpost to add in *.mod.c files generated for each module the setting of module attribute kernel_ksymb to value given by KBUILD_KSYMB macro.
This patch is part of a research project within Google Summer of Code of porting 'make localmodconfig' for backported drivers. The goal is to enable each module to expose in /sys its corresponding CONFIG_* option. The value of this attribute will be dynamically pegged by modpost without requiring extra work from the driver developers. Further, this information will be used by a hardware interogation tool to extract build information about the existing devices. Signed-off-by: Cristina Moraru <[email protected]> --- scripts/mod/modpost.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 48958d3..a105916 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -2245,6 +2245,12 @@ static void add_srcversion(struct buffer *b, struct module *mod) } } +static void add_kconfig_symbol(struct buffer *b, struct module *mod) +{ + buf_printf(b, "\n"); + buf_printf(b, "MODULE_INFO(kconfig_symbol, KBUILD_KSYMB);\n"); +} + static void write_if_changed(struct buffer *b, const char *fname) { char *tmp; @@ -2478,6 +2484,7 @@ int main(int argc, char **argv) add_depends(&buf, mod, modules); add_moddevtable(&buf, mod); add_srcversion(&buf, mod); + add_kconfig_symbol(&buf, mod); sprintf(fname, "%s.mod.c", mod->name); write_if_changed(&buf, fname); -- 2.7.4
