linux-kernel - [tip:perf/core] kprobes: Remove redundant address check

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Message-ID: <tip-edbaadbe42b0b790618ec49d29626223529d8195@git.kernel.org>
Date:	Wed, 15 Sep 2010 10:04:11 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,
	masami.hiramatsu.pt@...achi.com, tglx@...utronix.de,
	namhyung@...il.com, mingo@...e.hu
Subject: [tip:perf/core] kprobes: Remove redundant address check

Commit-ID:  edbaadbe42b0b790618ec49d29626223529d8195
Gitweb:     http://git.kernel.org/tip/edbaadbe42b0b790618ec49d29626223529d8195
Author:     Namhyung Kim <namhyung@...il.com>
AuthorDate: Wed, 15 Sep 2010 10:04:26 +0900
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Wed, 15 Sep 2010 10:44:00 +0200

kprobes: Remove redundant address check

Remove call to kernel_text_address() in register_jprobes()
because it is called right after in register_kprobe().

Signed-off-by: Namhyung Kim <namhyung@...il.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
LKML-Reference: <1284512670-2369-2-git-send-email-namhyung@...il.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 kernel/kprobes.c |   13 +++++--------
 1 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 282035f..8f96701 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1343,14 +1343,11 @@ int __kprobes register_jprobes(struct jprobe **jps, int num)
 		jp = jps[i];
 		addr = arch_deref_entry_point(jp->entry);
 
-		if (!kernel_text_address(addr))
-			ret = -EINVAL;
-		else {
-			/* Todo: Verify probepoint is a function entry point */
-			jp->kp.pre_handler = setjmp_pre_handler;
-			jp->kp.break_handler = longjmp_break_handler;
-			ret = register_kprobe(&jp->kp);
-		}
+		/* Todo: Verify probepoint is a function entry point */
+		jp->kp.pre_handler = setjmp_pre_handler;
+		jp->kp.break_handler = longjmp_break_handler;
+		ret = register_kprobe(&jp->kp);
+
 		if (ret < 0) {
 			if (i > 0)
 				unregister_jprobes(jps, i);
--
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