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authorAndi Kleen <ak@linux.intel.com>2014-02-08 09:01:17 +0100
committerH. Peter Anvin <hpa@linux.intel.com>2014-02-13 20:25:05 -0800
commitef178f9238b142cc1020265e176b20d27fd02ba9 (patch)
tree20b00b7972a5d45093ff873ac969c4f88f8a7794
parent1e64ff42ea3d8d2fc8aa71f9717b3c1cb6c2f893 (diff)
downloadlinux-ef178f9238b142cc1020265e176b20d27fd02ba9.tar.gz
Kbuild, lto: Handle basic LTO in modpost
- Don't warn about LTO marker symbols. modpost runs before the linker, so the module is not necessarily LTOed yet. - Don't complain about .gnu.lto* sections Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1391846481-31491-13-git-send-email-ak@linux.intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
-rw-r--r--scripts/mod/modpost.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index f91dd4565b81..63804a16ba9f 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -623,7 +623,10 @@ static void handle_modversions(struct module *mod, struct elf_info *info,
switch (sym->st_shndx) {
case SHN_COMMON:
- warn("\"%s\" [%s] is COMMON symbol\n", symname, mod->name);
+ if (!strncmp(symname, "__gnu_lto_", sizeof("__gnu_lto_")-1)) {
+ /* Should warn here, but modpost runs before the linker */
+ } else
+ warn("\"%s\" [%s] is COMMON symbol\n", symname, mod->name);
break;
case SHN_UNDEF:
/* undefined symbol */
@@ -849,6 +852,7 @@ static const char *section_white_list[] =
".xt.lit", /* xtensa */
".arcextmap*", /* arc */
".gnu.linkonce.arcext*", /* arc : modules */
+ ".gnu.lto*",
NULL
};