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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]:55514 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kAyR5-00035h-G0 for qemu-devel@archiver.kernel.org; Wed, 26 Aug 2020 12:38:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52746) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kAyQC-0002FY-FN for qemu-devel@nongnu.org; Wed, 26 Aug 2020 12:37:12 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:27822) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kAyQ9-0000ck-Et for qemu-devel@nongnu.org; Wed, 26 Aug 2020 12:37:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1598459826; 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; 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auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=216.205.24.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/25 23:30:47 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.959, 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_H5=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: berrange@redhat.com, zhang.zhanghailiang@huawei.com, quintela@redhat.com, qemu-devel@nongnu.org, xiexiangyou@huawei.com, alex.chen@huawei.com, ann.zhuangyanying@huawei.com, fangying1@huawei.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * Chuan Zheng (zhengchuan@huawei.com) wrote: > Compare page hash results for recorded sampled page. > > Signed-off-by: Chuan Zheng > Signed-off-by: YanYing Zhuang So I think this is OK, with the minor clean up suggestions of David E. > --- > migration/dirtyrate.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 64 insertions(+) > > diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c > index 66de426..050270d 100644 > --- a/migration/dirtyrate.c > +++ b/migration/dirtyrate.c > @@ -202,6 +202,70 @@ static int record_ramblock_hash_info(struct RamblockDirtyInfo **block_dinfo, > return 0; > } > > +static int calc_page_dirty_rate(struct RamblockDirtyInfo *info) > +{ > + uint32_t crc; > + int i; > + > + for (i = 0; i < info->sample_pages_count; i++) { > + crc = get_ramblock_vfn_hash(info, info->sample_page_vfn[i]); > + if (crc != info->hash_result[i]) { > + info->sample_dirty_count++; > + } > + } > + > + return 0; > +} > + > +static bool find_page_matched(RAMBlock *block, struct RamblockDirtyInfo *infos, > + int count, struct RamblockDirtyInfo **matched) > +{ > + int i; > + > + for (i = 0; i < count; i++) { > + if (!strcmp(infos[i].idstr, qemu_ram_get_idstr(block))) { > + break; > + } > + } > + > + if (i == count) { > + return false; > + } > + > + if (infos[i].ramblock_addr != qemu_ram_get_host_addr(block) || > + infos[i].ramblock_pages != > + (qemu_ram_get_used_length(block) >> DIRTYRATE_PAGE_SHIFT_KB)) { > + return false; > + } > + > + *matched = &infos[i]; > + return true; > +} > + > +static int compare_page_hash_info(struct RamblockDirtyInfo *info, > + int block_index) > +{ > + struct RamblockDirtyInfo *block_dinfo = NULL; > + RAMBlock *block = NULL; > + > + RAMBLOCK_FOREACH_MIGRATABLE(block) { > + block_dinfo = NULL; > + if (!find_page_matched(block, info, block_index + 1, &block_dinfo)) { > + continue; > + } > + if (calc_page_dirty_rate(block_dinfo) < 0) { > + return -1; > + } > + update_dirtyrate_stat(block_dinfo); > + } > + > + if (!DirtyStat.total_sample_count) { > + return -1; > + } > + > + return 0; > +} > + > static void calculate_dirtyrate(struct DirtyRateConfig config) > { > /* todo */ > -- > 1.8.3.1 > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK