linux-kernel - [tip:core/urgent] x86, dumpstack: Use %pB format specifier for stack trace

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Date:	Thu, 24 Mar 2011 07:58:17 GMT
From:	tip-bot for Namhyung Kim <namhyung@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	torvalds@...ux-foundation.org, namhyung@...il.com,
	fweisbec@...il.com, rostedt@...dmis.org, akpm@...ux-foundation.org,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:core/urgent] x86, dumpstack: Use %pB format specifier for stack trace

Commit-ID:  71f9e59800e5ad4e6b683348424c9fe54306cd43
Gitweb:     http://git.kernel.org/tip/71f9e59800e5ad4e6b683348424c9fe54306cd43
Author:     Namhyung Kim <namhyung@...il.com>
AuthorDate: Thu, 24 Mar 2011 11:42:30 +0900
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Thu, 24 Mar 2011 08:36:10 +0100

x86, dumpstack: Use %pB format specifier for stack trace

Improve noreturn function entries in call traces:

Before:

 Call Trace:
  [<ffffffff812a8502>] panic+0x8c/0x18d
  [<ffffffffa000012a>] deep01+0x0/0x38 [test_panic]  <--- bad
  [<ffffffff81104666>] proc_file_write+0x73/0x8d
  [<ffffffff811000b3>] proc_reg_write+0x8d/0xac
  [<ffffffff810c7d32>] vfs_write+0xa1/0xc5
  [<ffffffff810c7e0f>] sys_write+0x45/0x6c
  [<ffffffff8f02943b>] system_call_fastpath+0x16/0x1b

After:

 Call Trace:
  [<ffffffff812bce69>] panic+0x8c/0x18d
  [<ffffffffa000012a>] panic_write+0x20/0x20 [test_panic] <--- good
  [<ffffffff81115fab>] proc_file_write+0x73/0x8d
  [<ffffffff81111a5f>] proc_reg_write+0x8d/0xac
  [<ffffffff810d90ee>] vfs_write+0xa1/0xc5
  [<ffffffff810d91cb>] sys_write+0x45/0x6c
  [<ffffffff812c07fb>] system_call_fastpath+0x16/0x1b

Signed-off-by: Namhyung Kim <namhyung@...il.com>
Acked-by: Frederic Weisbecker <fweisbec@...il.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
LKML-Reference: <1300934550-21394-2-git-send-email-namhyung@...il.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/kernel/dumpstack.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
index 999e279..24d0479 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -27,7 +27,7 @@ static int die_counter;
 
 void printk_address(unsigned long address, int reliable)
 {
-	printk(" [<%p>] %s%pS\n", (void *) address,
+	printk(" [<%p>] %s%pB\n", (void *) address,
 			reliable ? "" : "? ", (void *) address);
 }
 
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