linux-kernel - [tip:x86/asm] x86: Clean up and extend do

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Date:	Tue, 6 Dec 2011 01:42:46 -0800
From:	tip-bot for Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	torvalds@...ux-foundation.org, a.p.zijlstra@...llo.nl,
	ananth@...ibm.com, srikar@...ux.vnet.ibm.com, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:x86/asm] x86: Clean up and extend do_int3()

Commit-ID:  cc3a1bf52a9d2808c7cd6e8f413b02b650b6b84b
Gitweb:     http://git.kernel.org/tip/cc3a1bf52a9d2808c7cd6e8f413b02b650b6b84b
Author:     Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
AuthorDate: Tue, 25 Oct 2011 19:51:59 +0530
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Tue, 6 Dec 2011 08:20:37 +0100

x86: Clean up and extend do_int3()

Since there is a possibility of !KPROBES int3 listeners
(such as kgdb) and since DIE_TRAP is currently not being
used by anybody, notify all listeners with DIE_INT3.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@...ibm.com>
Signed-off-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Link: http://lkml.kernel.org/r/20111025142159.GB21225@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/kernel/traps.c |    7 +------
 1 files changed, 1 insertions(+), 6 deletions(-)

diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index a8e3eb8..fa1191f 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -306,15 +306,10 @@ dotraplinkage void __kprobes do_int3(struct pt_regs *regs, long error_code)
 			== NOTIFY_STOP)
 		return;
 #endif /* CONFIG_KGDB_LOW_LEVEL_TRAP */
-#ifdef CONFIG_KPROBES
+
 	if (notify_die(DIE_INT3, "int3", regs, error_code, 3, SIGTRAP)
 			== NOTIFY_STOP)
 		return;
-#else
-	if (notify_die(DIE_TRAP, "int3", regs, error_code, 3, SIGTRAP)
-			== NOTIFY_STOP)
-		return;
-#endif
 
 	preempt_conditional_sti(regs);
 	do_trap(3, SIGTRAP, "int3", regs, error_code, NULL);
--
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