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From: Andi Kleen <ak@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: linux-kbuild@vger.kernel.org, x86@kernel.org,
	Andi Kleen <ak@linux.intel.com>
Subject: [PATCH 06/17] lto: Disable LTO for sys_ni
Date: Sat,  8 Feb 2014 09:01:10 +0100	[thread overview]
Message-ID: <1391846481-31491-6-git-send-email-ak@linux.intel.com> (raw)
In-Reply-To: <1391846481-31491-1-git-send-email-ak@linux.intel.com>

The assembler alias code in cond_syscall does not work
when compiled for LTO. Just disable LTO for that file.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
 kernel/Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/Makefile b/kernel/Makefile
index bc010ee..31c26c6 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -18,6 +18,9 @@ CFLAGS_REMOVE_cgroup-debug.o = -pg
 CFLAGS_REMOVE_irq_work.o = -pg
 endif
 
+# cond_syscall is currently not LTO compatible
+CFLAGS_sys_ni.o = $(DISABLE_LTO)
+
 obj-y += sched/
 obj-y += locking/
 obj-y += power/
-- 
1.8.5.2


  parent reply	other threads:[~2014-02-08  8:04 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-08  8:01 [PATCH 01/17] x86, lto: Disable LTO for the x86 VDSO Andi Kleen
2014-02-08  8:01 ` [PATCH 02/17] x86, lto: Disable fancy hweight optimizations for LTO v2 Andi Kleen
2014-02-08 18:52   ` H. Peter Anvin
2014-02-08 20:21     ` Andi Kleen
2014-02-08 21:43       ` H. Peter Anvin
2014-02-08  8:01 ` [PATCH 03/17] lto: Make asmlinkage __visible Andi Kleen
2014-02-14  4:30   ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-14  9:10     ` Borislav Petkov
2014-02-14 14:38       ` Andi Kleen
2014-02-08  8:01 ` [PATCH 04/17] lto, workaround: Add workaround for initcall reordering Andi Kleen
2014-02-14  4:30   ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08  8:01 ` [PATCH 05/17] lto: Handle LTO common symbols in module loader Andi Kleen
2014-02-12  1:04   ` Rusty Russell
2014-02-14  4:30   ` [tip:x86/asmlinkage] " tip-bot for Joe Mario
2014-02-20 23:11     ` Rusty Russell
2014-02-21 19:12       ` H. Peter Anvin
2014-02-21 22:37         ` Andi Kleen
2014-02-08  8:01 ` Andi Kleen [this message]
2014-02-14  4:31   ` [tip:x86/asmlinkage] lto: Disable LTO for sys_ni tip-bot for Andi Kleen
2014-02-08  8:01 ` [PATCH 07/17] Kbuild, lto, workaround: Don't warn for initcall_reference in modpost Andi Kleen
2014-02-14  4:31   ` [tip:x86/asmlinkage] Kbuild, lto, workaround: Don' t " tip-bot for Andi Kleen
2014-02-08  8:01 ` [PATCH 08/17] Kbuild, lto: Drop .number postfixes " Andi Kleen
2014-02-14  4:31   ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08  8:01 ` [PATCH 09/17] Kbuild, lto: add ld-version and ld-ifversion macros Andi Kleen
2014-02-14  4:31   ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08  8:01 ` [PATCH 10/17] Kbuild, lto: Add a gcc-ld script to let run gcc as ld Andi Kleen
2014-02-14  4:31   ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08  8:01 ` [PATCH 11/17] Kbuild, lto: Disable LTO for asm-offsets.c Andi Kleen
2014-02-14  4:32   ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08  8:01 ` [PATCH 12/17] Kbuild, lto: Set TMPDIR for LTO Andi Kleen
2014-02-14  4:26   ` H. Peter Anvin
2014-02-14 15:37     ` Andi Kleen
2014-02-08  8:01 ` [PATCH 13/17] Kbuild, lto: Handle basic LTO in modpost Andi Kleen
2014-02-14  4:32   ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08  8:01 ` [PATCH 14/17] Kbuild, lto: Add Link Time Optimization support Andi Kleen
2014-02-14  4:28   ` H. Peter Anvin
2014-02-14 14:36     ` Andi Kleen
2014-02-14 16:25       ` H. Peter Anvin
2014-02-08  8:01 ` [PATCH 15/17] Kbuild, lto: Add LTO build Documentation Andi Kleen
2014-02-08  8:01 ` [PATCH 16/17] lto: Mark spinlocks noinline when inline spinlocks are disabled Andi Kleen
2014-02-08  8:01 ` [PATCH 17/17] lto, module: Warn about modules that are not fully LTOed Andi Kleen
2014-02-12  1:13   ` Rusty Russell
2014-02-14  4:30 ` [tip:x86/asmlinkage] x86, lto: Disable LTO for the x86 VDSO tip-bot for Andi Kleen

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