From: Masami Hiramatsu <mhiramat@redhat.com>
To: Ingo Molnar <mingo@elte.hu>, lkml<linux-kernel@vger.kernel.org>
Cc: systemtap<systemtap@sources.redhat.com>,
DLE<dle-develop@lists.sourceforge.net>,
Masami Hiramatsu <mhiramat@redhat.com>,
Ingo Molnar <mingo@elte.hu>
Subject: [PATCH -tip] [Cleanup] x86/x86-64: Remove unused thread_return label from switch_to()
Date: Thu, 05 Nov 2009 16:04:00 -0000 [thread overview]
Message-ID: <20091105160359.5181.26225.stgit@harusame> (raw)
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
next reply other threads:[~2009-11-05 16:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-05 16:04 Masami Hiramatsu [this message]
2009-11-08 11:09 ` [tip:x86/asm] x86: " tip-bot for Masami Hiramatsu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20091105160359.5181.26225.stgit@harusame \
--to=mhiramat@redhat.com \
--cc=dle-develop@lists.sourceforge.net \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=systemtap@sources.redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).