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| author | Andi Kleen <ak@linux.intel.com> | 2014-02-08 09:01:17 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-02-13 20:25:05 -0800 |
| commit | ef178f9238b142cc1020265e176b20d27fd02ba9 (patch) | |
| tree | 20b00b7972a5d45093ff873ac969c4f88f8a7794 /scripts | |
| parent | 1e64ff42ea3d8d2fc8aa71f9717b3c1cb6c2f893 (diff) | |
| download | linux-ef178f9238b142cc1020265e176b20d27fd02ba9.tar.gz linux-ef178f9238b142cc1020265e176b20d27fd02ba9.tar.bz2 linux-ef178f9238b142cc1020265e176b20d27fd02ba9.zip | |
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')
| -rw-r--r-- | scripts/mod/modpost.c | 6 |
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 }; |