From patchwork Thu Jun 17 13:15:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Hyman Huang X-Patchwork-Id: 12327845 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B117C48BE5 for ; Thu, 17 Jun 2021 13:18:23 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id CEEF76112D for ; Thu, 17 Jun 2021 13:18:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CEEF76112D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chinatelecom.cn Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:45646 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ltruX-0002YM-Rk for qemu-devel@archiver.kernel.org; Thu, 17 Jun 2021 09:18:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44948) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ltro5-0007Hq-2r for qemu-devel@nongnu.org; Thu, 17 Jun 2021 09:11:41 -0400 Received: from prt-mail.chinatelecom.cn ([42.123.76.220]:42588 helo=chinatelecom.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ltro2-0001QQ-V2 for qemu-devel@nongnu.org; Thu, 17 Jun 2021 09:11:40 -0400 HMM_SOURCE_IP: 172.18.0.218:48906.1413600847 HMM_ATTACHE_NUM: 0000 HMM_SOURCE_TYPE: SMTP Received: from clientip-202.80.192.39?logid-7be0abd77ce94142b7bfe1792c57913a (unknown [172.18.0.218]) by chinatelecom.cn (HERMES) with SMTP id 9C060280072; Thu, 17 Jun 2021 21:11:31 +0800 (CST) X-189-SAVE-TO-SEND: +huangy81@chinatelecom.cn Received: from ([172.18.0.218]) by app0025 with ESMTP id 1d922227aeec43bbb3a3ddbde180bfaf for qemu-devel@nongnu.org; Thu Jun 17 21:11:36 2021 X-Transaction-ID: 1d922227aeec43bbb3a3ddbde180bfaf X-filter-score: filter<0> X-Real-From: huangy81@chinatelecom.cn X-Receive-IP: 172.18.0.218 X-MEDUSA-Status: 0 From: huangy81@chinatelecom.cn To: qemu-devel@nongnu.org Subject: [PATCH v6 1/7] KVM: introduce dirty_pages and kvm_dirty_ring_enabled Date: Thu, 17 Jun 2021 21:15:38 +0800 Message-Id: <32c3266ebfd75aaf3f2caaf6b5fad0fb6dd8a96a.1623935540.git.huangy81@chinatelecom.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: References: In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=42.123.76.220; envelope-from=huangy81@chinatelecom.cn; helo=chinatelecom.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-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: Eduardo Habkost , Juan Quintela , Hyman , "Dr. David Alan Gilbert" , Peter Xu , Chuan Zheng , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Hyman Huang(黄勇) dirty_pages is used to calculate dirtyrate via dirty ring, when enabled, kvm-reaper will increase the dirty pages after gfns being dirtied. kvm_dirty_ring_enabled shows if kvm-reaper is working. dirtyrate thread could use it to check if measurement can base on dirty ring feature. Signed-off-by: Hyman Huang(黄勇) --- accel/kvm/kvm-all.c | 7 +++++++ include/hw/core/cpu.h | 1 + include/sysemu/kvm.h | 1 + 3 files changed, 9 insertions(+) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index e5b10dd..e0e88a2 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -469,6 +469,7 @@ int kvm_init_vcpu(CPUState *cpu, Error **errp) cpu->kvm_fd = ret; cpu->kvm_state = s; cpu->vcpu_dirty = true; + cpu->dirty_pages = 0; mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0); if (mmap_size < 0) { @@ -743,6 +744,7 @@ static uint32_t kvm_dirty_ring_reap_one(KVMState *s, CPUState *cpu) count++; } cpu->kvm_fetch_index = fetch; + cpu->dirty_pages += count; return count; } @@ -2293,6 +2295,11 @@ bool kvm_vcpu_id_is_valid(int vcpu_id) return vcpu_id >= 0 && vcpu_id < kvm_max_vcpu_id(s); } +bool kvm_dirty_ring_enabled(void) +{ + return kvm_state->kvm_dirty_ring_size ? true : false; +} + static int kvm_init(MachineState *ms) { MachineClass *mc = MACHINE_GET_CLASS(ms); diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h index 4e0ea68..80fcb1d 100644 --- a/include/hw/core/cpu.h +++ b/include/hw/core/cpu.h @@ -374,6 +374,7 @@ struct CPUState { struct kvm_run *kvm_run; struct kvm_dirty_gfn *kvm_dirty_gfns; uint32_t kvm_fetch_index; + uint64_t dirty_pages; /* Used for events with 'vcpu' and *without* the 'disabled' properties */ DECLARE_BITMAP(trace_dstate_delayed, CPU_TRACE_DSTATE_MAX_EVENTS); diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index a1ab1ee..7b22aeb 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -547,4 +547,5 @@ bool kvm_cpu_check_are_resettable(void); bool kvm_arch_cpu_check_are_resettable(void); +bool kvm_dirty_ring_enabled(void); #endif