* [PATCH -tip] [Cleanup] x86/x86-64: Remove unused thread_return label from switch_to()
@ 2009-11-05 16:04 Masami Hiramatsu
2009-11-08 11:09 ` [tip:x86/asm] x86: " tip-bot for Masami Hiramatsu
0 siblings, 1 reply; 2+ messages in thread
From: Masami Hiramatsu @ 2009-11-05 16:04 UTC (permalink / raw)
To: Ingo Molnar, lkml; +Cc: systemtap, DLE, Masami Hiramatsu, Ingo Molnar
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@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
---
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" \
--
Masami Hiramatsu
Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division
e-mail: mhiramat@redhat.com
^ permalink raw reply [flat|nested] 2+ messages in thread
* [tip:x86/asm] x86: Remove unused thread_return label from switch_to()
2009-11-05 16:04 [PATCH -tip] [Cleanup] x86/x86-64: Remove unused thread_return label from switch_to() Masami Hiramatsu
@ 2009-11-08 11:09 ` tip-bot for Masami Hiramatsu
0 siblings, 0 replies; 2+ messages in thread
From: tip-bot for Masami Hiramatsu @ 2009-11-08 11:09 UTC (permalink / raw)
To: linux-tip-commits
Cc: linux-kernel, hpa, mingo, dle-develop, tglx, mhiramat, systemtap, mingo
Commit-ID: c12a229bc5971534537a7d0e49e44f9f1f5d0336
Gitweb: http://git.kernel.org/tip/c12a229bc5971534537a7d0e49e44f9f1f5d0336
Author: Masami Hiramatsu <mhiramat@redhat.com>
AuthorDate: Thu, 5 Nov 2009 11:03:59 -0500
Committer: Ingo Molnar <mingo@elte.hu>
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@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
LKML-Reference: <20091105160359.5181.26225.stgit@harusame>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
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" \
^ permalink raw reply [flat|nested] 2+ messages in thread
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