From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754253Ab0IOBEu (ORCPT ); Tue, 14 Sep 2010 21:04:50 -0400 Received: from mail-pv0-f174.google.com ([74.125.83.174]:36702 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754144Ab0IOBEt (ORCPT ); Tue, 14 Sep 2010 21:04:49 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=lUh9Naw5OHOzA3hOg9TEcIQwfVonzQWuqldDFdISbeMbMB7qpLL3T1IWEJ501bI/xp FNOZaBcODGCHaCfxjqo6FBV0wAdQqYo3mbYTSc077fewniKexmeQWJoTv14vKFIvo/Iu nfXB1VVVkr241aDnMvA00a/xxRN7kwhwYsDlQ= From: Namhyung Kim To: Andrew Morton , Ingo Molnar Cc: Masami Hiramatsu , linux-kernel@vger.kernel.org Subject: [PATCH 1/5] kprobes: remove redundant address check Date: Wed, 15 Sep 2010 10:04:26 +0900 Message-Id: <1284512670-2369-2-git-send-email-namhyung@gmail.com> X-Mailer: git-send-email 1.7.2.2 In-Reply-To: <1284512670-2369-1-git-send-email-namhyung@gmail.com> References: <1284512670-2369-1-git-send-email-namhyung@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org remove call to kernel_text_address() in register_jprobes() because it is called right after in register_kprobe(). Signed-off-by: Namhyung Kim Acked-by: Masami Hiramatsu --- 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); -- 1.7.2.2