From: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Date: Fri, 22 Mar 2013 15:19:46 +0000 (+0530)
Subject: uprobes/powerpc: Remove additional trap instruction check
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3c9eb54f71fed86b761a6da4ad3eedc9566ceb8d;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

uprobes/powerpc: Remove additional trap instruction check

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@in.ibm.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
---

diff --git a/arch/powerpc/kernel/uprobes.c b/arch/powerpc/kernel/uprobes.c
index cb7f63da140c..2ecdbe304f46 100644
--- a/arch/powerpc/kernel/uprobes.c
+++ b/arch/powerpc/kernel/uprobes.c
@@ -53,12 +53,6 @@ int arch_uprobe_analyze_insn(struct arch_uprobe *auprobe,
 	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;
 }