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 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 7FBC9C433F5 for ; Tue, 18 Jan 2022 20:15:58 +0000 (UTC) Received: from localhost ([::1]:60962 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1n9utZ-0007PC-Gy for qemu-devel@archiver.kernel.org; Tue, 18 Jan 2022 15:15:57 -0500 Received: from eggs.gnu.org ([209.51.188.92]:34438) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n9uUV-0006t0-DF for qemu-devel@nongnu.org; Tue, 18 Jan 2022 14:50:04 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:36669) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n9uUS-0003mP-CJ for qemu-devel@nongnu.org; Tue, 18 Jan 2022 14:50:02 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1642535399; 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: in-reply-to:in-reply-to:references:references; bh=Uk6vzp7IRymayusGKgXtoSrG5gUqsyyj1P+WQoDfNmE=; b=NJFqbyBxIboIRPKAgK59aI7gkpCHwoWn/Yfdlb5IWT/PS4DWI1k2SiANkwqrod5sKlKpgu N3GqYKFMEDwiljrE/5v4+ghWVHmu8HA47I3Q3xGEoELOMfppJm4aUGxCyaOztJwoU1Eb9E 8pIh4yaX2Pqd1iEYm2fPknEweJyotUo= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-383-r0QzWNv-PTS9qelcip0L_A-1; Tue, 18 Jan 2022 14:49:58 -0500 X-MC-Unique: r0QzWNv-PTS9qelcip0L_A-1 Received: by mail-wm1-f70.google.com with SMTP id x10-20020a7bc20a000000b0034c3d77f277so204958wmi.3 for ; Tue, 18 Jan 2022 11:49:57 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=Uk6vzp7IRymayusGKgXtoSrG5gUqsyyj1P+WQoDfNmE=; b=dvrDDiuB8Fvn1RP54AhYvE+0bSzVQ1g/kK/2I6v2ZcgNEu14zQE63+I85DMMNPmKzv DVZ5/cIeWPlvOtFJ+M6MpyppJj8cVmeA+Zx0NUJqlwyrkGVJ0fbPH6idQI0fCqcM/dum 7xgJxWhcZvJsy3uvccm6m5N76xKwR8RPpY0CgnWkNJyR/Q6R7CBelmtN3+2Gxow0rePJ P8Mdy+x24rg7SZTlz2ADwPVDiNPNbV4C5qFjyzdRn0t7AibC7Yiqz/V+T8Bnhs1kXue0 1QqynGwkm16aCkWUAsoOz80LNVDWA/K4c4CDVlOYWqXaxuQHwrG5KLqqYKoOOFc31jUP 5QSQ== X-Gm-Message-State: AOAM531jxvxHtfd29KdFGb8YbmCee92dTgZd2Ij8Lq9TvHYE2TV11AMK exoF/yZYfWb/XvkNUEoNQCa7YdUUq4z+DYgm5yhm0Rb/sb5riJinZ2W5UVLD7zAy+cpFDNToAX5 CgdFCqLxpncTZbQQ= X-Received: by 2002:a05:6000:18a5:: with SMTP id b5mr16984726wri.339.1642535396960; Tue, 18 Jan 2022 11:49:56 -0800 (PST) X-Google-Smtp-Source: ABdhPJzuhsxOy3ZU80gAGzEBMGD19GHUZf86OvhJ5EjekqvlWgSyhYUraVBDDZZLbumyrKVHckOs7Q== X-Received: by 2002:a05:6000:18a5:: with SMTP id b5mr16984709wri.339.1642535396690; Tue, 18 Jan 2022 11:49:56 -0800 (PST) Received: from work-vm (cpc109025-salf6-2-0-cust480.10-2.cable.virginm.net. [82.30.61.225]) by smtp.gmail.com with ESMTPSA id o15sm18480203wro.70.2022.01.18.11.49.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Jan 2022 11:49:56 -0800 (PST) Date: Tue, 18 Jan 2022 19:49:54 +0000 From: "Dr. David Alan Gilbert" To: Juan Quintela Subject: Re: [PATCH v4 20/23] multifd: Support for zero pages transmission Message-ID: References: <20220111130024.5392-1-quintela@redhat.com> <20220111130024.5392-21-quintela@redhat.com> MIME-Version: 1.0 In-Reply-To: <20220111130024.5392-21-quintela@redhat.com> User-Agent: Mutt/2.1.5 (2021-12-30) Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=170.10.129.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.7, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=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: , Cc: Eduardo Habkost , qemu-devel@nongnu.org, Peter Xu , Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= , Yanan Wang , Leonardo Bras Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * Juan Quintela (quintela@redhat.com) wrote: > This patch adds counters and similar. Logic will be added on the > following patch. > > Signed-off-by: Juan Quintela Reviewed-by: Dr. David Alan Gilbert > --- > migration/multifd.h | 13 ++++++++++++- > migration/multifd.c | 22 +++++++++++++++++++--- > migration/trace-events | 2 +- > 3 files changed, 32 insertions(+), 5 deletions(-) > > diff --git a/migration/multifd.h b/migration/multifd.h > index 4dda900a0b..4c6d29c954 100644 > --- a/migration/multifd.h > +++ b/migration/multifd.h > @@ -49,7 +49,10 @@ typedef struct { > /* size of the next packet that contains pages */ > uint32_t next_packet_size; > uint64_t packet_num; > - uint64_t unused[4]; /* Reserved for future use */ > + /* zero pages */ > + uint32_t zero_pages; > + uint32_t unused32[1]; /* Reserved for future use */ > + uint64_t unused64[3]; /* Reserved for future use */ > char ramblock[256]; > uint64_t offset[]; > } __attribute__((packed)) MultiFDPacket_t; > @@ -117,6 +120,10 @@ typedef struct { > ram_addr_t *normal; > /* num of non zero pages */ > uint32_t normal_num; > + /* Pages that are zero */ > + ram_addr_t *zero; > + /* num of zero pages */ > + uint32_t zero_num; > /* used for compression methods */ > void *data; > } MultiFDSendParams; > @@ -162,6 +169,10 @@ typedef struct { > ram_addr_t *normal; > /* num of non zero pages */ > uint32_t normal_num; > + /* Pages that are zero */ > + ram_addr_t *zero; > + /* num of zero pages */ > + uint32_t zero_num; > /* used for de-compression methods */ > void *data; > } MultiFDRecvParams; > diff --git a/migration/multifd.c b/migration/multifd.c > index 76b57a7177..cfa9f75d13 100644 > --- a/migration/multifd.c > +++ b/migration/multifd.c > @@ -265,6 +265,7 @@ static void multifd_send_fill_packet(MultiFDSendParams *p) > packet->normal_pages = cpu_to_be32(p->normal_num); > packet->next_packet_size = cpu_to_be32(p->next_packet_size); > packet->packet_num = cpu_to_be64(p->packet_num); > + packet->zero_pages = cpu_to_be32(p->zero_num); > > if (p->pages->block) { > strncpy(packet->ramblock, p->pages->block->idstr, 256); > @@ -327,7 +328,15 @@ static int multifd_recv_unfill_packet(MultiFDRecvParams *p, Error **errp) > p->next_packet_size = be32_to_cpu(packet->next_packet_size); > p->packet_num = be64_to_cpu(packet->packet_num); > > - if (p->normal_num == 0) { > + p->zero_num = be32_to_cpu(packet->zero_pages); > + if (p->zero_num > packet->pages_alloc - p->normal_num) { > + error_setg(errp, "multifd: received packet " > + "with %u zero pages and expected maximum pages are %u", > + p->zero_num, packet->pages_alloc - p->normal_num) ; > + return -1; > + } > + > + if (p->normal_num == 0 && p->zero_num == 0) { > return 0; > } > > @@ -553,6 +562,8 @@ void multifd_save_cleanup(void) > p->iov = NULL; > g_free(p->normal); > p->normal = NULL; > + g_free(p->zero); > + p->zero = NULL; > multifd_send_state->ops->send_cleanup(p, &local_err); > if (local_err) { > migrate_set_error(migrate_get_current(), local_err); > @@ -641,6 +652,7 @@ static void *multifd_send_thread(void *opaque) > uint32_t flags = p->flags; > p->iovs_num = 1; > p->normal_num = 0; > + p->zero_num = 0; > > for (int i = 0; i < p->pages->num; i++) { > p->normal[p->normal_num] = p->pages->offset[i]; > @@ -662,8 +674,8 @@ static void *multifd_send_thread(void *opaque) > p->pages->block = NULL; > qemu_mutex_unlock(&p->mutex); > > - trace_multifd_send(p->id, packet_num, p->normal_num, flags, > - p->next_packet_size); > + trace_multifd_send(p->id, packet_num, p->normal_num, p->zero_num, > + flags, p->next_packet_size); > > p->iov[0].iov_len = p->packet_len; > p->iov[0].iov_base = p->packet; > @@ -913,6 +925,7 @@ int multifd_save_setup(Error **errp) > /* We need one extra place for the packet header */ > p->iov = g_new0(struct iovec, page_count + 1); > p->normal = g_new0(ram_addr_t, page_count); > + p->zero = g_new0(ram_addr_t, page_count); > socket_send_channel_create(multifd_new_send_channel_async, p); > } > > @@ -1014,6 +1027,8 @@ int multifd_load_cleanup(Error **errp) > p->iov = NULL; > g_free(p->normal); > p->normal = NULL; > + g_free(p->zero); > + p->zero = NULL; > multifd_recv_state->ops->recv_cleanup(p); > } > qemu_sem_destroy(&multifd_recv_state->sem_sync); > @@ -1153,6 +1168,7 @@ int multifd_load_setup(Error **errp) > p->name = g_strdup_printf("multifdrecv_%d", i); > p->iov = g_new0(struct iovec, page_count); > p->normal = g_new0(ram_addr_t, page_count); > + p->zero = g_new0(ram_addr_t, page_count); > } > > for (i = 0; i < thread_count; i++) { > diff --git a/migration/trace-events b/migration/trace-events > index 171a83a55d..b7e8f54395 100644 > --- a/migration/trace-events > +++ b/migration/trace-events > @@ -124,7 +124,7 @@ multifd_recv_sync_main_wait(uint8_t id) "channel %u" > multifd_recv_terminate_threads(bool error) "error %d" > multifd_recv_thread_end(uint8_t id, uint64_t packets, uint64_t pages) "channel %u packets %" PRIu64 " pages %" PRIu64 > multifd_recv_thread_start(uint8_t id) "%u" > -multifd_send(uint8_t id, uint64_t packet_num, uint32_t normal, uint32_t flags, uint32_t next_packet_size) "channel %u packet_num %" PRIu64 " normal pages %u flags 0x%x next packet size %u" > +multifd_send(uint8_t id, uint64_t packet_num, uint32_t normal, uint32_t zero, uint32_t flags, uint32_t next_packet_size) "channel %u packet_num %" PRIu64 " normal pages %u zero pages %u flags 0x%x next packet size %u" > multifd_send_error(uint8_t id) "channel %u" > multifd_send_sync_main(long packet_num) "packet num %ld" > multifd_send_sync_main_signal(uint8_t id) "channel %u" > -- > 2.34.1 > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK