From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC88CC433DF for ; Wed, 24 Jun 2020 13:12:27 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8A47320720 for ; Wed, 24 Jun 2020 13:12:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="K8rwzL4S" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8A47320720 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:53370 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jo5CU-0003yu-Mj for qemu-devel@archiver.kernel.org; Wed, 24 Jun 2020 09:12:26 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40948) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jo5B7-0002CH-5o for qemu-devel@nongnu.org; Wed, 24 Jun 2020 09:11:01 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:54526 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jo5B4-0001Qx-RL for qemu-devel@nongnu.org; Wed, 24 Jun 2020 09:11:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593004257; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type:in-reply-to:in-reply-to: references:references; bh=8BfVD+OM03DL0qt0nib4hII2g9y5qCUmWKTWek7P/5g=; b=K8rwzL4SbraliT2kN0DLd01lU0KE5WS7f2Q1H8gUSEpmMHjJe9hEN7jQdbTd54JXWQ9x+4 01Upexe1bzNwgmSuAmXyNMcKQnJ8XRHvyjEfdH9asgOIlBfcvHcUFyefjDVnBmfTqj1tXG e8enzdRmX9T1CzE5MmWRJxkg0+E4nBg= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-418-1u_3mIegP4O6gYxKnMFh-Q-1; Wed, 24 Jun 2020 09:10:55 -0400 X-MC-Unique: 1u_3mIegP4O6gYxKnMFh-Q-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DDC98805EE3 for ; Wed, 24 Jun 2020 13:10:54 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-67.ams2.redhat.com [10.36.112.67]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8170317514; Wed, 24 Jun 2020 13:10:46 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 9D1C845DB; Wed, 24 Jun 2020 15:10:45 +0200 (CEST) From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PATCH v5 01/10] module: qom module support Date: Wed, 24 Jun 2020 15:10:36 +0200 Message-Id: <20200624131045.14512-2-kraxel@redhat.com> In-Reply-To: <20200624131045.14512-1-kraxel@redhat.com> References: <20200624131045.14512-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Received-SPF: pass client-ip=205.139.110.120; envelope-from=kraxel@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/24 03:27:53 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Eduardo Habkost , Gerd Hoffmann , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , dinechin@redhat.com, Paolo Bonzini , philmd@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Add support for qom types provided by modules. For starters use a manually maintained list which maps qom type to module and prefix. Two load functions are added: One to load the module for a specific type, and one to load all modules (needed for object/device lists as printed by -- for example -- qemu -device help). Signed-off-by: Gerd Hoffmann --- include/qemu/module.h | 2 ++ util/module.c | 55 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 57 insertions(+) diff --git a/include/qemu/module.h b/include/qemu/module.h index 011ae1ae7605..9121a475c1b6 100644 --- a/include/qemu/module.h +++ b/include/qemu/module.h @@ -70,5 +70,7 @@ void register_dso_module_init(void (*fn)(void), module_init_type type); void module_call_init(module_init_type type); bool module_load_one(const char *prefix, const char *lib_name); +void module_load_qom_one(const char *type); +void module_load_qom_all(void); #endif diff --git a/util/module.c b/util/module.c index e48d9aacc05a..ee560a4b4269 100644 --- a/util/module.c +++ b/util/module.c @@ -245,3 +245,58 @@ bool module_load_one(const char *prefix, const char *lib_name) #endif return success; } + +/* + * Building devices and other qom objects modular is mostly useful in + * case they have dependencies to external shared libraries, so we can + * cut down the core qemu library dependencies. Which is the case for + * only a very few devices & objects. + * + * So with the expectation that this will be rather the exception than + * to rule and the list will not gain that many entries go with a + * simple manually maintained list for now. + */ +static struct { + const char *type; + const char *prefix; + const char *module; +} const qom_modules[] = { +}; + +static bool module_loaded_qom_all; + +void module_load_qom_one(const char *type) +{ + int i; + + if (module_loaded_qom_all) { + return; + } + for (i = 0; i < ARRAY_SIZE(qom_modules); i++) { + if (strcmp(qom_modules[i].type, type) == 0) { + module_load_one(qom_modules[i].prefix, + qom_modules[i].module); + return; + } + } +} + +void module_load_qom_all(void) +{ + int i; + + if (module_loaded_qom_all) { + return; + } + for (i = 0; i < ARRAY_SIZE(qom_modules); i++) { + if (i > 0 && (strcmp(qom_modules[i - 1].module, + qom_modules[i].module) == 0 && + strcmp(qom_modules[i - 1].prefix, + qom_modules[i].prefix) == 0)) { + /* one module implementing multiple types -> load only once */ + continue; + } + module_load_one(qom_modules[i].prefix, qom_modules[i].module); + } + module_loaded_qom_all = true; +} -- 2.18.4