linux-kernel - [tip:x86/asmlinkage] Kbuild, lto: Disable LTO for asm-offsets.c

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Message-ID: <tip-1e64ff42ea3d8d2fc8aa71f9717b3c1cb6c2f893@git.kernel.org>
Date:	Thu, 13 Feb 2014 20:32:06 -0800
From:	tip-bot for Andi Kleen <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	ak@...ux.intel.com, tglx@...utronix.de, hpa@...ux.intel.com
Subject: [tip:x86/asmlinkage] Kbuild, lto: Disable LTO for asm-offsets.c

Commit-ID:  1e64ff42ea3d8d2fc8aa71f9717b3c1cb6c2f893
Gitweb:     http://git.kernel.org/tip/1e64ff42ea3d8d2fc8aa71f9717b3c1cb6c2f893
Author:     Andi Kleen <ak@...ux.intel.com>
AuthorDate: Sat, 8 Feb 2014 09:01:15 +0100
Committer:  H. Peter Anvin <hpa@...ux.intel.com>
CommitDate: Thu, 13 Feb 2014 20:25:03 -0800

Kbuild, lto: Disable LTO for asm-offsets.c

The asm-offset.c technique to fish data out of the assembler file
does not work with LTO. Just disable for the asm-offset.c build.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
Link: http://lkml.kernel.org/r/1391846481-31491-11-git-send-email-ak@linux.intel.com
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
---
 scripts/Makefile.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index d5d859c..9f0ee22 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -198,7 +198,7 @@ $(multi-objs-y:.o=.s)   : modname = $(modname-multi)
 $(multi-objs-y:.o=.lst) : modname = $(modname-multi)
 
 quiet_cmd_cc_s_c = CC $(quiet_modtag)  $@
-cmd_cc_s_c       = $(CC) $(c_flags) -fverbose-asm -S -o $@ $<
+cmd_cc_s_c       = $(CC) $(c_flags) $(DISABLE_LTO) -fverbose-asm -S -o $@ $<
 
 $(obj)/%.s: $(src)/%.c FORCE
 	$(call if_changed_dep,cc_s_c)
--
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