From patchwork Thu Jul 18 01:25:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Yang X-Patchwork-Id: 11048363 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4494C6C5 for ; Thu, 18 Jul 2019 01:26:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 25F55285FB for ; Thu, 18 Jul 2019 01:26:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 15588286CB; Thu, 18 Jul 2019 01:26:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B19F1285FB for ; Thu, 18 Jul 2019 01:26:30 +0000 (UTC) Received: from localhost ([::1]:33612 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hnvBl-0007sa-El for patchwork-qemu-devel@patchwork.kernel.org; Wed, 17 Jul 2019 21:26:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58821) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hnvBd-0007Lm-Cj for qemu-devel@nongnu.org; Wed, 17 Jul 2019 21:26:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hnvBc-0002j4-Df for qemu-devel@nongnu.org; Wed, 17 Jul 2019 21:26:21 -0400 Received: from mga05.intel.com ([192.55.52.43]:8488) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hnvBb-0002hG-43 for qemu-devel@nongnu.org; Wed, 17 Jul 2019 21:26:20 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Jul 2019 18:26:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,276,1559545200"; d="scan'208";a="319493326" Received: from richard.sh.intel.com (HELO localhost) ([10.239.159.54]) by orsmga004.jf.intel.com with ESMTP; 17 Jul 2019 18:26:13 -0700 From: Wei Yang To: qemu-devel@nongnu.org Date: Thu, 18 Jul 2019 09:25:47 +0800 Message-Id: <20190718012547.16373-1-richardw.yang@linux.intel.com> X-Mailer: git-send-email 2.17.1 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.43 Subject: [Qemu-devel] [PATCH] migration: just pass RAMBlock is enough 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: pbonzini@redhat.com, Wei Yang , dgilbert@redhat.com, quintela@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP RAMBlock->used_length is always passed to migration_bitmap_sync_range(), which could be retrieved from RAMBlock. Suggested-by: Paolo Bonzini Signed-off-by: Wei Yang Reviewed-by: Peter Xu Reviewed-by: Paolo Bonzini --- migration/ram.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/migration/ram.c b/migration/ram.c index 908517fc2b..0a6070d787 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -1669,11 +1669,10 @@ static inline bool migration_bitmap_clear_dirty(RAMState *rs, return ret; } -static void migration_bitmap_sync_range(RAMState *rs, RAMBlock *rb, - ram_addr_t length) +static void migration_bitmap_sync_range(RAMState *rs, RAMBlock *rb) { rs->migration_dirty_pages += - cpu_physical_memory_sync_dirty_bitmap(rb, 0, length, + cpu_physical_memory_sync_dirty_bitmap(rb, 0, rb->used_length, &rs->num_dirty_pages_period); } @@ -1762,7 +1761,7 @@ static void migration_bitmap_sync(RAMState *rs) qemu_mutex_lock(&rs->bitmap_mutex); rcu_read_lock(); RAMBLOCK_FOREACH_NOT_IGNORED(block) { - migration_bitmap_sync_range(rs, block, block->used_length); + migration_bitmap_sync_range(rs, block); } ram_counters.remaining = ram_bytes_remaining(); rcu_read_unlock(); @@ -4193,7 +4192,7 @@ static void colo_flush_ram_cache(void) memory_global_dirty_log_sync(); rcu_read_lock(); RAMBLOCK_FOREACH_NOT_IGNORED(block) { - migration_bitmap_sync_range(ram_state, block, block->used_length); + migration_bitmap_sync_range(ram_state, block); } rcu_read_unlock();