From patchwork Wed Jan 7 07:35:42 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wang Nan X-Patchwork-Id: 5582991 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 5F40FBF6C3 for ; Wed, 7 Jan 2015 07:45:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 93E0F2024F for ; Wed, 7 Jan 2015 07:45:46 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CA98A200E7 for ; Wed, 7 Jan 2015 07:45:45 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Y8lG4-0004xr-Ao; Wed, 07 Jan 2015 07:42:24 +0000 Received: from szxga03-in.huawei.com ([119.145.14.66]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Y8lFC-00048R-Pj for linux-arm-kernel@lists.infradead.org; Wed, 07 Jan 2015 07:41:31 +0000 Received: from 172.24.2.119 (EHLO lggeml423-hub.china.huawei.com) ([172.24.2.119]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id AZS02734; Wed, 07 Jan 2015 15:40:51 +0800 (CST) Received: from kernel-host.huawei (10.107.197.247) by lggeml423-hub.china.huawei.com (10.72.61.33) with Microsoft SMTP Server id 14.3.158.1; Wed, 7 Jan 2015 15:40:43 +0800 From: Wang Nan To: , , , , , , , , Subject: [RFC PATCH 05/11] kprobes: Add an KPROBE_FLAG_EARLY for early kprobe. Date: Wed, 7 Jan 2015 15:35:42 +0800 Message-ID: <1420616142-42937-1-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1420616086-42692-1-git-send-email-wangnan0@huawei.com> References: <1420616086-42692-1-git-send-email-wangnan0@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.107.197.247] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020204.50F52B3B.00F4, ss=1, re=0.001, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: d2dc00fa976deff670c125a56372259d X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150106_234131_265267_4710161E X-CRM114-Status: UNSURE ( 7.37 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) Cc: lizefan@huawei.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Introduce a KPROBE_FLAG_EARLY for futher expansion. KPROBE_FLAG_EARLY indicates a kprobe is installed at very early stage, its resources should be allocated statically. Signed-off-by: Wang Nan --- include/linux/kprobes.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index 1ab5475..fa0de88 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -128,6 +128,7 @@ struct kprobe { * this flag is only for optimized_kprobe. */ #define KPROBE_FLAG_FTRACE 8 /* probe is using ftrace */ +#define KPROBE_FLAG_EARLY 16 /* early kprobe */ /* Has this kprobe gone ? */ static inline int kprobe_gone(struct kprobe *p)