From patchwork Wed Jan 7 07:35:46 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wang Nan X-Patchwork-Id: 5583021 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 65A249F2ED for ; Wed, 7 Jan 2015 07:46:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A29402024F for ; Wed, 7 Jan 2015 07:46:49 +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 BC14F200E7 for ; Wed, 7 Jan 2015 07:46:48 +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 1Y8lGb-0005Kq-Mr; Wed, 07 Jan 2015 07:42:57 +0000 Received: from szxga02-in.huawei.com ([119.145.14.65]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Y8lFJ-00049x-PZ for linux-arm-kernel@lists.infradead.org; Wed, 07 Jan 2015 07:41:38 +0000 Received: from 172.24.2.119 (EHLO lggeml423-hub.china.huawei.com) ([172.24.2.119]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id CFA93959; Wed, 07 Jan 2015 15:40:56 +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 15:40:49 +0800 From: Wang Nan To: , , , , , , , , Subject: [RFC PATCH 06/11] kprobes: makes kprobes_initialized globally visable. Date: Wed, 7 Jan 2015 15:35:46 +0800 Message-ID: <1420616146-42980-1-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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150106_234138_085908_F2F9E3BF X-CRM114-Status: UNSURE ( 7.24 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.7 (/) 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 Following patches will enable kprobe registering very early, before kprobe system initialized. Arch code can use it to do special treatments for such kprobes. Signed-off-by: Wang Nan --- include/linux/kprobes.h | 2 ++ kernel/kprobes.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index fa0de88..b0265f9 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -50,6 +50,8 @@ #define KPROBE_REENTER 0x00000004 #define KPROBE_HIT_SSDONE 0x00000008 +extern int kprobes_initialized; + #else /* CONFIG_KPROBES */ typedef int kprobe_opcode_t; struct arch_specific_insn { diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 9fbe0c3..4591cae 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -67,7 +67,7 @@ addr = ((kprobe_opcode_t *)(kallsyms_lookup_name(name))) #endif -static int kprobes_initialized; +int kprobes_initialized; static struct hlist_head kprobe_table[KPROBE_TABLE_SIZE]; static struct hlist_head kretprobe_inst_table[KPROBE_TABLE_SIZE];