From patchwork Wed Oct 11 20:35:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juan Quintela X-Patchwork-Id: 13417926 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 393EDCDB47E for ; Wed, 11 Oct 2023 20:36:40 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qqfvh-0005Cz-Lp; Wed, 11 Oct 2023 16:35:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qqfvg-0005CN-I3 for qemu-devel@nongnu.org; Wed, 11 Oct 2023 16:35:40 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qqfve-0002zB-6l for qemu-devel@nongnu.org; Wed, 11 Oct 2023 16:35:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697056537; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=u1x5haXn7atDjonP8E/33bwDgNkkf+VsBPQsfRc84qY=; b=JNqAxyL7Q/LzQw3F3JZSyiY0ch6lxHX8MN1Om92/SwmDxch+13k4zkYjDJ+RTr540w3Cac OvltdM+uXFB+71MTkYkKlpIn+kJgGjgD0D04PrloCPXc3gF5qYPIrCvUOOr+MjYssEahDs Y482XhQuMVBnu66f5ehm/mSKR7eBsZA= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-191-bk25NGRlONObM-Tlads72w-1; Wed, 11 Oct 2023 16:35:34 -0400 X-MC-Unique: bk25NGRlONObM-Tlads72w-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id DCFE71C09A46; Wed, 11 Oct 2023 20:35:33 +0000 (UTC) Received: from secure.mitica (unknown [10.39.195.75]) by smtp.corp.redhat.com (Postfix) with ESMTP id D49AF492B06; Wed, 11 Oct 2023 20:35:32 +0000 (UTC) From: Juan Quintela To: qemu-devel@nongnu.org Cc: Fabiano Rosas , Peter Xu , Juan Quintela , Leonardo Bras , Li Zhijian Subject: [PATCH v3 03/13] migration/rdma: Unfold ram_control_after_iterate() Date: Wed, 11 Oct 2023 22:35:17 +0200 Message-ID: <20231011203527.9061-4-quintela@redhat.com> In-Reply-To: <20231011203527.9061-1-quintela@redhat.com> References: <20231011203527.9061-1-quintela@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.129.124; envelope-from=quintela@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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Once there: - Remove unused data parameter - unfold it in its callers - change all callers to call qemu_rdma_registration_stop() - We need to call QIO_CHANNEL_RDMA() after we check for migrate_rdma() Reviewed-by: Peter Xu Signed-off-by: Juan Quintela Reviewed-by: Li Zhijian --- This function has goto's. So I don't change the place where we declare variables, althought I think that it is correct, just don't start that discussion. --- migration/qemu-file.h | 2 -- migration/rdma.h | 3 +++ migration/qemu-file.c | 12 ------------ migration/ram.c | 17 ++++++++++++++--- migration/rdma.c | 9 ++++----- 5 files changed, 21 insertions(+), 22 deletions(-) diff --git a/migration/qemu-file.h b/migration/qemu-file.h index d6a370c569..35e671a01e 100644 --- a/migration/qemu-file.h +++ b/migration/qemu-file.h @@ -55,7 +55,6 @@ typedef int (QEMURamSaveFunc)(QEMUFile *f, size_t size); typedef struct QEMUFileHooks { - QEMURamHookFunc *after_ram_iterate; QEMURamHookFunc *hook_ram_load; QEMURamSaveFunc *save_page; } QEMUFileHooks; @@ -126,7 +125,6 @@ void qemu_fflush(QEMUFile *f); void qemu_file_set_blocking(QEMUFile *f, bool block); int qemu_file_get_to_fd(QEMUFile *f, int fd, size_t size); -void ram_control_after_iterate(QEMUFile *f, uint64_t flags); void ram_control_load_hook(QEMUFile *f, uint64_t flags, void *data); /* Whenever this is found in the data stream, the flags diff --git a/migration/rdma.h b/migration/rdma.h index 670c67a8cb..c13b94c782 100644 --- a/migration/rdma.h +++ b/migration/rdma.h @@ -25,8 +25,11 @@ void rdma_start_incoming_migration(const char *host_port, Error **errp); #ifdef CONFIG_RDMA int qemu_rdma_registration_start(QEMUFile *f, uint64_t flags); +int qemu_rdma_registration_stop(QEMUFile *f, uint64_t flags); #else static inline int qemu_rdma_registration_start(QEMUFile *f, uint64_t flags) { return 0; } +static inline +int qemu_rdma_registration_stop(QEMUFile *f, uint64_t flags) { return 0; } #endif #endif diff --git a/migration/qemu-file.c b/migration/qemu-file.c index 5e2d73fd68..e7dba2a849 100644 --- a/migration/qemu-file.c +++ b/migration/qemu-file.c @@ -298,18 +298,6 @@ void qemu_fflush(QEMUFile *f) f->iovcnt = 0; } -void ram_control_after_iterate(QEMUFile *f, uint64_t flags) -{ - int ret = 0; - - if (f->hooks && f->hooks->after_ram_iterate) { - ret = f->hooks->after_ram_iterate(f, flags, NULL); - if (ret < 0) { - qemu_file_set_error(f, ret); - } - } -} - void ram_control_load_hook(QEMUFile *f, uint64_t flags, void *data) { if (f->hooks && f->hooks->hook_ram_load) { diff --git a/migration/ram.c b/migration/ram.c index ab590a983f..15bd4ad697 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -3067,7 +3067,11 @@ static int ram_save_setup(QEMUFile *f, void *opaque) if (ret < 0) { qemu_file_set_error(f, ret); } - ram_control_after_iterate(f, RAM_CONTROL_SETUP); + + ret = qemu_rdma_registration_stop(f, RAM_CONTROL_SETUP); + if (ret < 0) { + qemu_file_set_error(f, ret); + } migration_ops = g_malloc0(sizeof(MigrationOps)); migration_ops->ram_save_target_page = ram_save_target_page_legacy; @@ -3186,7 +3190,10 @@ static int ram_save_iterate(QEMUFile *f, void *opaque) * Must occur before EOS (or any QEMUFile operation) * because of RDMA protocol. */ - ram_control_after_iterate(f, RAM_CONTROL_ROUND); + ret = qemu_rdma_registration_stop(f, RAM_CONTROL_ROUND); + if (ret < 0) { + qemu_file_set_error(f, ret); + } out: if (ret >= 0 @@ -3259,7 +3266,11 @@ static int ram_save_complete(QEMUFile *f, void *opaque) qemu_mutex_unlock(&rs->bitmap_mutex); ram_flush_compressed_data(rs); - ram_control_after_iterate(f, RAM_CONTROL_FINISH); + + int ret = qemu_rdma_registration_stop(f, RAM_CONTROL_FINISH); + if (ret < 0) { + qemu_file_set_error(f, ret); + } } if (ret < 0) { diff --git a/migration/rdma.c b/migration/rdma.c index a8bfc052c4..99c0914a23 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -3878,20 +3878,20 @@ int qemu_rdma_registration_start(QEMUFile *f, uint64_t flags) * Inform dest that dynamic registrations are done for now. * First, flush writes, if any. */ -static int qemu_rdma_registration_stop(QEMUFile *f, - uint64_t flags, void *data) +int qemu_rdma_registration_stop(QEMUFile *f, uint64_t flags) { - QIOChannelRDMA *rioc = QIO_CHANNEL_RDMA(qemu_file_get_ioc(f)); + QIOChannelRDMA *rioc; Error *err = NULL; RDMAContext *rdma; RDMAControlHeader head = { .len = 0, .repeat = 1 }; int ret; - if (migration_in_postcopy()) { + if (!migrate_rdma() || migration_in_postcopy()) { return 0; } RCU_READ_LOCK_GUARD(); + rioc = QIO_CHANNEL_RDMA(qemu_file_get_ioc(f)); rdma = qatomic_rcu_read(&rioc->rdmaout); if (!rdma) { return -1; @@ -3999,7 +3999,6 @@ static const QEMUFileHooks rdma_read_hooks = { }; static const QEMUFileHooks rdma_write_hooks = { - .after_ram_iterate = qemu_rdma_registration_stop, .save_page = qemu_rdma_save_page, };