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authorAndi Kleen <ak@linux.intel.com>2014-02-08 03:01:17 -0500
committerH. Peter Anvin <hpa@linux.intel.com>2014-02-13 23:25:05 -0500
commitef178f9238b142cc1020265e176b20d27fd02ba9 (patch)
tree20b00b7972a5d45093ff873ac969c4f88f8a7794 /scripts/mod
parent1e64ff42ea3d8d2fc8aa71f9717b3c1cb6c2f893 (diff)
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>
Diffstat (limited to 'scripts/mod')
-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,
623 623
624 switch (sym->st_shndx) { 624 switch (sym->st_shndx) {
625 case SHN_COMMON: 625 case SHN_COMMON:
626 warn("\"%s\" [%s] is COMMON symbol\n", symname, mod->name); 626 if (!strncmp(symname, "__gnu_lto_", sizeof("__gnu_lto_")-1)) {
627 /* Should warn here, but modpost runs before the linker */
628 } else
629 warn("\"%s\" [%s] is COMMON symbol\n", symname, mod->name);
627 break; 630 break;
628 case SHN_UNDEF: 631 case SHN_UNDEF:
629 /* undefined symbol */ 632 /* undefined symbol */
@@ -849,6 +852,7 @@ static const char *section_white_list[] =
849 ".xt.lit", /* xtensa */ 852 ".xt.lit", /* xtensa */
850 ".arcextmap*", /* arc */ 853 ".arcextmap*", /* arc */
851 ".gnu.linkonce.arcext*", /* arc : modules */ 854 ".gnu.linkonce.arcext*", /* arc : modules */
855 ".gnu.lto*",
852 NULL 856 NULL
853}; 857};
854 858