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Mon, 30 Jan 2023 08:10:02 +0000 (UTC) Received: from secure.mitica (unknown [10.39.192.57]) by smtp.corp.redhat.com (Postfix) with ESMTP id CD34C40C2064; Mon, 30 Jan 2023 08:10:00 +0000 (UTC) From: Juan Quintela To: qemu-devel@nongnu.org Cc: Juan Quintela , Marcel Apfelbaum , Yanan Wang , Markus Armbruster , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , "Dr. David Alan Gilbert" , Eduardo Habkost , Eric Blake Subject: [PATCH v2 02/11] migration: Make multifd_bytes atomic Date: Mon, 30 Jan 2023 09:09:47 +0100 Message-Id: <20230130080956.3047-3-quintela@redhat.com> In-Reply-To: <20230130080956.3047-1-quintela@redhat.com> References: <20230130080956.3047-1-quintela@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 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_H2=-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 In the spirit of: commit 394d323bc3451e4d07f13341cb8817fac8dfbadd Author: Peter Xu Date: Tue Oct 11 17:55:51 2022 -0400 migration: Use atomic ops properly for page accountings Signed-off-by: Juan Quintela --- migration/ram.h | 1 + migration/migration.c | 4 ++-- migration/multifd.c | 4 ++-- 3 files changed, 5 insertions(+), 4 deletions(-) diff --git a/migration/ram.h b/migration/ram.h index 81cbb0947c..3c1de6aedf 100644 --- a/migration/ram.h +++ b/migration/ram.h @@ -50,6 +50,7 @@ typedef struct { Stat64 duplicate; Stat64 normal; Stat64 postcopy_bytes; + Stat64 multifd_bytes; } MigrationAtomicStats; extern MigrationAtomicStats ram_atomic_counters; diff --git a/migration/migration.c b/migration/migration.c index 644c61e91d..d261c7d16d 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -1058,7 +1058,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s) ram_counters.dirty_sync_missed_zero_copy; info->ram->postcopy_requests = ram_counters.postcopy_requests; info->ram->page_size = page_size; - info->ram->multifd_bytes = ram_counters.multifd_bytes; + info->ram->multifd_bytes = stat64_get(&ram_atomic_counters.multifd_bytes); info->ram->pages_per_second = s->pages_per_second; info->ram->precopy_bytes = ram_counters.precopy_bytes; info->ram->downtime_bytes = ram_counters.downtime_bytes; @@ -3659,7 +3659,7 @@ static MigThrError migration_detect_error(MigrationState *s) static uint64_t migration_total_bytes(MigrationState *s) { return qemu_file_total_transferred(s->to_dst_file) + - ram_counters.multifd_bytes; + stat64_get(&ram_atomic_counters.multifd_bytes); } static void migration_calculate_complete(MigrationState *s) diff --git a/migration/multifd.c b/migration/multifd.c index 20a81cd7f2..49fa76e5e1 100644 --- a/migration/multifd.c +++ b/migration/multifd.c @@ -431,8 +431,8 @@ static int multifd_send_pages(QEMUFile *f) p->pages = pages; transferred = ((uint64_t) pages->num) * p->page_size + p->packet_len; qemu_file_acct_rate_limit(f, transferred); - ram_counters.multifd_bytes += transferred; qemu_mutex_unlock(&p->mutex); + stat64_add(&ram_atomic_counters.multifd_bytes, transferred); stat64_add(&ram_atomic_counters.transferred, transferred); qemu_sem_post(&p->sem); @@ -623,8 +623,8 @@ int multifd_send_sync_main(QEMUFile *f) p->flags |= MULTIFD_FLAG_SYNC; p->pending_job++; qemu_file_acct_rate_limit(f, p->packet_len); - ram_counters.multifd_bytes += p->packet_len; qemu_mutex_unlock(&p->mutex); + stat64_add(&ram_atomic_counters.multifd_bytes, p->packet_len); stat64_add(&ram_atomic_counters.transferred, p->packet_len); qemu_sem_post(&p->sem); -- 2.39.1