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Message-ID: <20130322151946.GE20010@in.ibm.com>
Date:	Fri, 22 Mar 2013 20:49:46 +0530
From:	Ananth N Mavinakayanahalli <ananth@...ibm.com>
To:	lkml <linux-kernel@...r.kernel.org>
Cc:	oleg@...hat.com, Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	benh@...nel.crashing.org, ppcdev <linuxppc-dev@...ts.ozlabs.org>
Subject: [PATCH v2 4/4] uprobes/powerpc: remove additional trap instruction
	check

From: Ananth N Mavinakayanahalli <ananth@...ibm.com>

prepare_uprobe() already checks if the underlying unstruction
(on file) is a trap variant. We don't need to check this again.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@...ibm.com>
---
 arch/powerpc/kernel/uprobes.c |    6 ------
 1 file changed, 6 deletions(-)

Index: linux-3.9-rc3/arch/powerpc/kernel/uprobes.c
===================================================================
--- linux-3.9-rc3.orig/arch/powerpc/kernel/uprobes.c
+++ linux-3.9-rc3/arch/powerpc/kernel/uprobes.c
@@ -53,12 +53,6 @@ int arch_uprobe_analyze_insn(struct arch
 	if (addr & 0x03)
 		return -EINVAL;
 
-	/*
-	 * We currently don't support a uprobe on an already
-	 * existing breakpoint instruction underneath
-	 */
-	if (is_trap(auprobe->ainsn))
-		return -ENOTSUPP;
 	return 0;
 }
 

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