From nobody Wed Nov 12 01:57:14 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1567156692; cv=none; d=zoho.com; s=zohoarc; b=N3xXE+9AldQUeGuCth7TY53T1jmlDmUfcgi6qsoXvlo0fx0aFOLsxXhy51/U0RyQJrsS3fS0inhdUS2NE3AmkmqOaVy3wrdZUXk0fKCUllt8jh+rOnkRlvrnk8A3L3bzD/WV8YylQNkrZtx+yor88gU3ErbPFDs09+NvXHc0xxA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1567156692; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=iCXNU6tS5mgkv+1DMP6dKqhC8w5sGZ8OYcH86s/lklM=; b=iuTwgkaLj9jnpFLvqNqvt+nEbHBjH/msz65bE6fiXeEh1W5ZeGpTYE4cz9SYbt5jWvdoTHkWKQ9fuOCav3pNaz5Yg1NbiXPOWAu98cgJmElA0r7pkPI4Q5Ojk2mrH+Nr1yXUV+5Ck4N8FisTiGuntH2pWU5+bC3g4Pxmi+3gQis= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1567156692601985.7408426117292; Fri, 30 Aug 2019 02:18:12 -0700 (PDT) Received: from localhost ([::1]:57380 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i3d2k-0005wa-Ed for importer@patchew.org; Fri, 30 Aug 2019 05:18:06 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58141) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i3cyp-0003R0-Vy for qemu-devel@nongnu.org; Fri, 30 Aug 2019 05:14:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i3cyl-0007qa-Lq for qemu-devel@nongnu.org; Fri, 30 Aug 2019 05:14:01 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:30326) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1i3cyg-0007Uf-TN; Fri, 30 Aug 2019 05:13:55 -0400 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x7U97LXd146050; Fri, 30 Aug 2019 05:13:42 -0400 Received: from ppma01dal.us.ibm.com (83.d6.3fa9.ip4.static.sl-reverse.com [169.63.214.131]) by mx0a-001b2d01.pphosted.com with ESMTP id 2upyk6ufsm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 30 Aug 2019 05:13:42 -0400 Received: from pps.filterd (ppma01dal.us.ibm.com [127.0.0.1]) by ppma01dal.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id x7U99QOs029191; Fri, 30 Aug 2019 09:13:41 GMT Received: from b01cxnp23034.gho.pok.ibm.com (b01cxnp23034.gho.pok.ibm.com [9.57.198.29]) by ppma01dal.us.ibm.com with ESMTP id 2unb3tc7qp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 30 Aug 2019 09:13:41 +0000 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x7U9DZl037355782 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 30 Aug 2019 09:13:35 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 81DCAAC05B; Fri, 30 Aug 2019 09:13:35 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 88DA4AC060; Fri, 30 Aug 2019 09:13:33 +0000 (GMT) Received: from [127.0.1.1] (unknown [9.85.75.15]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Fri, 30 Aug 2019 09:13:33 +0000 (GMT) From: Aravinda Prasad To: aik@ozlabs.ru, qemu-ppc@nongnu.org, qemu-devel@nongnu.org, david@gibson.dropbear.id.au Date: Fri, 30 Aug 2019 14:43:32 +0530 Message-ID: <156715641252.27761.6449153496630124556.stgit@aravinda> In-Reply-To: <156715632966.27761.8190459106519248668.stgit@aravinda> References: <156715632966.27761.8190459106519248668.stgit@aravinda> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-08-30_04:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=810 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908300099 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH v12 1/6] Wrapper function to wait on condition for the main loop mutex 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: paulus@ozlabs.org, aravinda@linux.vnet.ibm.com, groug@kaod.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Introduce a wrapper function to wait on condition for the main loop mutex. This function atomically releases the main loop mutex and causes the calling thread to block on the condition. This wrapper is required because qemu_global_mutex is a static variable. Signed-off-by: Aravinda Prasad Reviewed-by: David Gibson Reviewed-by: Greg Kurz --- cpus.c | 5 +++++ include/qemu/main-loop.h | 8 ++++++++ 2 files changed, 13 insertions(+) diff --git a/cpus.c b/cpus.c index 85cd451..d229830 100644 --- a/cpus.c +++ b/cpus.c @@ -1877,6 +1877,11 @@ void qemu_mutex_unlock_iothread(void) qemu_mutex_unlock(&qemu_global_mutex); } =20 +void qemu_cond_wait_iothread(QemuCond *cond) +{ + qemu_cond_wait(cond, &qemu_global_mutex); +} + static bool all_vcpus_paused(void) { CPUState *cpu; diff --git a/include/qemu/main-loop.h b/include/qemu/main-loop.h index f6ba78e..a6d20b0 100644 --- a/include/qemu/main-loop.h +++ b/include/qemu/main-loop.h @@ -295,6 +295,14 @@ void qemu_mutex_lock_iothread_impl(const char *file, i= nt line); */ void qemu_mutex_unlock_iothread(void); =20 +/* + * qemu_cond_wait_iothread: Wait on condition for the main loop mutex + * + * This function atomically releases the main loop mutex and causes + * the calling thread to block on the condition. + */ +void qemu_cond_wait_iothread(QemuCond *cond); + /* internal interfaces */ =20 void qemu_fd_register(int fd);