From nobody Mon Nov 10 22:32:52 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=1559108813; cv=none; d=zoho.com; s=zohoarc; b=n3up0m88Jqah12zXJCxg/H2nVtCPLeK4GlVURBt/yL7NEkK3vO4UBOJUiwBJ85UJpAtlFS0CODNAP0ORWmIrzclPM+/cseoSGSwwO6+d3DlqvSmqclNQ84sF7X1VK6XQHmOgEUKY8LW+hhR2nvW8mMd3MVkkafYg9MgfeJZ7rjU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1559108813; 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=JkuGV8Zzpdo2fdTM27ScxAB6CcB45nRF9q+IBn17YW4=; b=ixBXANX+OyEXTWprkDElemyTTTOZyltaIuio8txqfJeDlLl1AZvS0/Q3rbFdv8Sj/biGmf5OGXJmLN9d6o4TIv3uKtm8nFL0TsL+reweip8Uf7LaN+3+NFSFB15s+DMLQ2PykU91ZUKpPh2ugB460sq0pDKW/Eo5O2T0CO5dSg4= 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 1559108813383806.3634829471242; Tue, 28 May 2019 22:46:53 -0700 (PDT) Received: from localhost ([127.0.0.1]:47678 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hVrQF-00020I-F7 for importer@patchew.org; Wed, 29 May 2019 01:46:47 -0400 Received: from eggs.gnu.org ([209.51.188.92]:33351) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hVrKD-00060f-H0 for qemu-devel@nongnu.org; Wed, 29 May 2019 01:40:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hVrKC-00057y-HO for qemu-devel@nongnu.org; Wed, 29 May 2019 01:40:33 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:41852) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hVrKC-00055Q-6b for qemu-devel@nongnu.org; Wed, 29 May 2019 01:40:32 -0400 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x4T5XOKJ042559 for ; Wed, 29 May 2019 01:40:31 -0400 Received: from e31.co.us.ibm.com (e31.co.us.ibm.com [32.97.110.149]) by mx0a-001b2d01.pphosted.com with ESMTP id 2ssk4s9w5r-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 29 May 2019 01:40:30 -0400 Received: from localhost by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 29 May 2019 06:40:27 +0100 Received: from b03ledav005.gho.boulder.ibm.com (b03ledav005.gho.boulder.ibm.com [9.17.130.236]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x4T5eQiC12648894 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 29 May 2019 05:40:26 GMT Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B185DBE051; Wed, 29 May 2019 05:40:26 +0000 (GMT) Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8FD0DBE04F; Wed, 29 May 2019 05:40:24 +0000 (GMT) Received: from [127.0.1.1] (unknown [9.124.31.56]) by b03ledav005.gho.boulder.ibm.com (Postfix) with ESMTP; Wed, 29 May 2019 05:40:24 +0000 (GMT) From: Aravinda Prasad To: aik@au1.ibm.com, qemu-ppc@nongnu.org, qemu-devel@nongnu.org, david@gibson.dropbear.id.au Date: Wed, 29 May 2019 11:10:23 +0530 In-Reply-To: <155910829070.13149.5215948335633966328.stgit@aravinda> References: <155910829070.13149.5215948335633966328.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-cbid: 19052905-8235-0000-0000-00000E9FBB27 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00011177; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000286; SDB=6.01210123; UDB=6.00635758; IPR=6.00991155; MB=3.00027096; MTD=3.00000008; XFM=3.00000015; UTC=2019-05-29 05:40:29 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19052905-8236-0000-0000-000045C34D72 Message-Id: <155910842340.13149.1753970249353896871.stgit@aravinda> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-05-29_03:, , 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=908 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905290037 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH v9 2/6] Wrapper function to wait on condition for the main loop mutex X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 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 ffc5711..14cb24b 100644 --- a/cpus.c +++ b/cpus.c @@ -1867,6 +1867,11 @@ 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);