Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753894AbaKRGfz (ORCPT ); Tue, 18 Nov 2014 01:35:55 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:15947 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753166AbaKRGfx (ORCPT ); Tue, 18 Nov 2014 01:35:53 -0500 From: Wang Nan To: , , , , , , , , , CC: , , Subject: [PATCH v8 1/2] kprobes: copy ainsn after alloc aggr kprobe Date: Tue, 18 Nov 2014 14:32:38 +0800 Message-ID: <1416292359-75893-2-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1416292359-75893-1-git-send-email-wangnan0@huawei.com> References: <1416292359-75893-1-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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/