[tip:x86/asm] x86: Remove unused thread_return label from switch_to()

[tip-bot for Masami Hiramatsu]

Commit-ID:  c12a229bc5971534537a7d0e49e44f9f1f5d0336
Gitweb:     http://git.kernel.org/tip/c12a229bc5971534537a7d0e49e44f9f1f5d0336
Author:     Masami Hiramatsu <mhiramat@xxxxxxxxxx>
AuthorDate: Thu, 5 Nov 2009 11:03:59 -0500
Committer:  Ingo Molnar <mingo@xxxxxxx>
CommitDate: Sun, 8 Nov 2009 11:57:13 +0100

x86: Remove unused thread_return label from switch_to()

Remove unused thread_return label from switch_to() macro on
x86-64. Since this symbol cuts into schedule(), backtrace at the
latter half of schedule() was always shown as thread_return().

Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: systemtap <systemtap@xxxxxxxxxxxxxxxxxx>
Cc: DLE <dle-develop@xxxxxxxxxxxxxxxxxxxxx>
LKML-Reference: <20091105160359.5181.26225.stgit@harusame>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
 arch/x86/include/asm/system.h |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/system.h b/arch/x86/include/asm/system.h
index f08f973..1a953e2 100644
--- a/arch/x86/include/asm/system.h
+++ b/arch/x86/include/asm/system.h
@@ -128,8 +128,6 @@ do {									\
 	     "movq %%rsp,%P[threadrsp](%[prev])\n\t" /* save RSP */	  \
 	     "movq %P[threadrsp](%[next]),%%rsp\n\t" /* restore RSP */	  \
 	     "call __switch_to\n\t"					  \
-	     ".globl thread_return\n"					  \
-	     "thread_return:\n\t"					  \
 	     "movq "__percpu_arg([current_task])",%%rsi\n\t"		  \
 	     __switch_canary						  \
 	     "movq %P[thread_info](%%rsi),%%r8\n\t"			  \
--
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