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=-15.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 C7812C433FE for ; Fri, 11 Dec 2020 17:19:24 +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 680CC23DC2 for ; Fri, 11 Dec 2020 17:19:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 680CC23DC2 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]:50380 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1knm4h-000622-Ew for qemu-devel@archiver.kernel.org; Fri, 11 Dec 2020 12:19:23 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:49784) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1knluG-0003YY-Re for qemu-devel@nongnu.org; Fri, 11 Dec 2020 12:08:36 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:57639) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1knlu8-00024R-LN for qemu-devel@nongnu.org; Fri, 11 Dec 2020 12:08:36 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607706508; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NnM6dYlYZRgd2ExH9w41QSV9/yrt19fOVsd+vEwELuw=; b=do8ve7+e+CRUSWnMCjuyp21GCTZo9KQg62hb9n47IqPZgFAm1CiS+HWZPqJcZilhaZgEab Z9PCth48zR9mCIG7m0rJ8OIfYC6xk2Ax60KMfr4Di1rNqR5ImwGSTWvCe3LfcjEsLEhExu GXnu4iFOZp1VGu1ea8AyDVna1ktGXy8= 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-534-JenYioVRM5GCif73l6RSbQ-1; Fri, 11 Dec 2020 12:08:23 -0500 X-MC-Unique: JenYioVRM5GCif73l6RSbQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B51CB800D53; Fri, 11 Dec 2020 17:08:22 +0000 (UTC) Received: from merkur.redhat.com (ovpn-114-231.ams2.redhat.com [10.36.114.231]) by smtp.corp.redhat.com (Postfix) with ESMTP id 945D05D71D; Fri, 11 Dec 2020 17:08:18 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PULL 03/34] block/throttle-groups: Use lock guard macros Date: Fri, 11 Dec 2020 18:07:41 +0100 Message-Id: <20201211170812.228643-4-kwolf@redhat.com> In-Reply-To: <20201211170812.228643-1-kwolf@redhat.com> References: <20201211170812.228643-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kwolf@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=63.128.21.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no 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: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Gan Qixin Replace manual lock()/unlock() calls with lock guard macros (QEMU_LOCK_GUARD/WITH_QEMU_LOCK_GUARD) in block/throttle-groups. Signed-off-by: Gan Qixin Message-Id: <20201203075055.127773-4-ganqixin@huawei.com> Signed-off-by: Kevin Wolf --- block/throttle-groups.c | 48 ++++++++++++++++++++--------------------- 1 file changed, 23 insertions(+), 25 deletions(-) diff --git a/block/throttle-groups.c b/block/throttle-groups.c index e2f2813c0f..abd16ed9db 100644 --- a/block/throttle-groups.c +++ b/block/throttle-groups.c @@ -546,7 +546,7 @@ void throttle_group_register_tgm(ThrottleGroupMember *tgm, tgm->aio_context = ctx; qatomic_set(&tgm->restart_pending, 0); - qemu_mutex_lock(&tg->lock); + QEMU_LOCK_GUARD(&tg->lock); /* If the ThrottleGroup is new set this ThrottleGroupMember as the token */ for (i = 0; i < 2; i++) { if (!tg->tokens[i]) { @@ -565,8 +565,6 @@ void throttle_group_register_tgm(ThrottleGroupMember *tgm, qemu_co_mutex_init(&tgm->throttled_reqs_lock); qemu_co_queue_init(&tgm->throttled_reqs[0]); qemu_co_queue_init(&tgm->throttled_reqs[1]); - - qemu_mutex_unlock(&tg->lock); } /* Unregister a ThrottleGroupMember from its group, removing it from the list, @@ -594,25 +592,25 @@ void throttle_group_unregister_tgm(ThrottleGroupMember *tgm) /* Wait for throttle_group_restart_queue_entry() coroutines to finish */ AIO_WAIT_WHILE(tgm->aio_context, qatomic_read(&tgm->restart_pending) > 0); - qemu_mutex_lock(&tg->lock); - for (i = 0; i < 2; i++) { - assert(tgm->pending_reqs[i] == 0); - assert(qemu_co_queue_empty(&tgm->throttled_reqs[i])); - assert(!timer_pending(tgm->throttle_timers.timers[i])); - if (tg->tokens[i] == tgm) { - token = throttle_group_next_tgm(tgm); - /* Take care of the case where this is the last tgm in the group */ - if (token == tgm) { - token = NULL; + WITH_QEMU_LOCK_GUARD(&tg->lock) { + for (i = 0; i < 2; i++) { + assert(tgm->pending_reqs[i] == 0); + assert(qemu_co_queue_empty(&tgm->throttled_reqs[i])); + assert(!timer_pending(tgm->throttle_timers.timers[i])); + if (tg->tokens[i] == tgm) { + token = throttle_group_next_tgm(tgm); + /* Take care of the case where this is the last tgm in the group */ + if (token == tgm) { + token = NULL; + } + tg->tokens[i] = token; } - tg->tokens[i] = token; } - } - /* remove the current tgm from the list */ - QLIST_REMOVE(tgm, round_robin); - throttle_timers_destroy(&tgm->throttle_timers); - qemu_mutex_unlock(&tg->lock); + /* remove the current tgm from the list */ + QLIST_REMOVE(tgm, round_robin); + throttle_timers_destroy(&tgm->throttle_timers); + } throttle_group_unref(&tg->ts); tgm->throttle_state = NULL; @@ -638,14 +636,14 @@ void throttle_group_detach_aio_context(ThrottleGroupMember *tgm) assert(qemu_co_queue_empty(&tgm->throttled_reqs[1])); /* Kick off next ThrottleGroupMember, if necessary */ - qemu_mutex_lock(&tg->lock); - for (i = 0; i < 2; i++) { - if (timer_pending(tt->timers[i])) { - tg->any_timer_armed[i] = false; - schedule_next_request(tgm, i); + WITH_QEMU_LOCK_GUARD(&tg->lock) { + for (i = 0; i < 2; i++) { + if (timer_pending(tt->timers[i])) { + tg->any_timer_armed[i] = false; + schedule_next_request(tgm, i); + } } } - qemu_mutex_unlock(&tg->lock); throttle_timers_detach_aio_context(tt); tgm->aio_context = NULL; -- 2.29.2