From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934483AbaH0NPr (ORCPT ); Wed, 27 Aug 2014 09:15:47 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:22624 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933270AbaH0NPp (ORCPT ); Wed, 27 Aug 2014 09:15:45 -0400 From: Wang Nan To: Russell King , "David A. Long" , Jon Medhurst , Taras Kondratiuk , Ben Dooks , "Ananth N Mavinakayanahalli" , Anil S Keshavamurthy , "David S. Miller" , Masami Hiramatsu , Will Deacon CC: Wang Nan , Pei Feiyue , , Subject: [PATCH v5 2/3] kprobes: copy ainsn after alloc aggr kprobe Date: Wed, 27 Aug 2014 21:02:31 +0800 Message-ID: <1409144552-12751-3-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1409144552-12751-1-git-send-email-wangnan0@huawei.com> References: <1409144552-12751-1-git-send-email-wangnan0@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.197.247] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Copy old kprobe to newly alloced optimized_kprobe before arch_prepare_optimized_kprobe(). Original kprove can brings more information to optimizer. Signed-off-by: Wang Nan Cc: Russell King Cc: "David A. Long" Cc: Jon Medhurst Cc: Taras Kondratiuk Cc: Ben Dooks Cc: Ananth N Mavinakayanahalli Cc: Anil S Keshavamurthy Cc: "David S. Miller" Cc: Masami Hiramatsu Cc: Will Deacon --- kernel/kprobes.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 3995f54..33cf568 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -730,7 +730,12 @@ static struct kprobe *alloc_aggr_kprobe(struct kprobe *p) return NULL; INIT_LIST_HEAD(&op->list); - op->kp.addr = p->addr; + + /* + * copy gives arch_prepare_optimized_kprobe + * more information + */ + copy_kprobe(p, &op->kp); arch_prepare_optimized_kprobe(op); return &op->kp; -- 1.8.4