From c12a229bc5971534537a7d0e49e44f9f1f5d0336 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 5 Nov 2009 11:03:59 -0500 Subject: [PATCH] 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 Cc: systemtap Cc: DLE LKML-Reference: <20091105160359.5181.26225.stgit@harusame> Signed-off-by: Ingo Molnar --- arch/x86/include/asm/system.h | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/x86/include/asm/system.h b/arch/x86/include/asm/system.h index f08f97374892..1a953e26401c 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" \ -- 2.45.2