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Commit ef178f92 authored Feb 08, 2014 by Andi Kleen Committed by H. Peter Anvin Feb 13, 2014

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>

parent 1e64ff42

scripts/mod/modpost.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -623,6 +623,9 @@ static void handle_modversions(struct module mod, struct elf_info info,

		switch (sym->st_shndx) {
		case SHN_COMMON:
		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:
		@@ -849,6 +852,7 @@ static const char *section_white_list[] =
		".xt.lit", /* xtensa */
		".arcextmap", / arc */
		".gnu.linkonce.arcext", / arc : modules */
		".gnu.lto*",
		NULL
		};