From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752495AbaJYTBi (ORCPT ); Sat, 25 Oct 2014 15:01:38 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:42367 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751505AbaJYTBd (ORCPT ); Sat, 25 Oct 2014 15:01:33 -0400 From: Wang Nan To: , CC: , , , , , , , , , , Subject: [PATCH v7 1/2] kprobes: copy ainsn after alloc aggr kprobe Date: Sat, 25 Oct 2014 14:51:04 +0800 Message-ID: <1414219865-35988-2-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1414219865-35988-1-git-send-email-wangnan0@huawei.com> References: <1414219865-35988-1-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. v1 -> v2: - Bugfix: copy p->addr when alloc_aggr_kprobe. Signed-off-by: Wang Nan --- kernel/kprobes.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 3995f54..e9868ec 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -730,7 +730,13 @@ static struct kprobe *alloc_aggr_kprobe(struct kprobe *p) return NULL; INIT_LIST_HEAD(&op->list); + + /* + * copy gives arch_prepare_optimized_kprobe + * more information + */ op->kp.addr = p->addr; + copy_kprobe(p, &op->kp); arch_prepare_optimized_kprobe(op); return &op->kp; -- 1.8.4