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 0E888C433EF for ; Thu, 31 Mar 2022 17:56:13 +0000 (UTC) Received: from localhost ([::1]:41352 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nZz1o-0007CW-4Q for qemu-devel@archiver.kernel.org; Thu, 31 Mar 2022 13:56:12 -0400 Received: from eggs.gnu.org ([209.51.188.92]:39602) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nZyvl-0004qJ-6O for qemu-devel@nongnu.org; Thu, 31 Mar 2022 13:49:59 -0400 Received: from prt-mail.chinatelecom.cn ([42.123.76.222]:36364 helo=chinatelecom.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nZyvj-0003sc-15 for qemu-devel@nongnu.org; Thu, 31 Mar 2022 13:49:56 -0400 HMM_SOURCE_IP: 172.18.0.188:45998.1356280661 HMM_ATTACHE_NUM: 0000 HMM_SOURCE_TYPE: SMTP Received: from clientip-125.69.43.160 (unknown [172.18.0.188]) by chinatelecom.cn (HERMES) with SMTP id 8831728009B; Fri, 1 Apr 2022 01:49:50 +0800 (CST) X-189-SAVE-TO-SEND: +huangy81@chinatelecom.cn Received: from ([172.18.0.188]) by app0023 with ESMTP id 2978143c96154b65b322922b60500749 for qemu-devel@nongnu.org; Fri, 01 Apr 2022 01:49:53 CST X-Transaction-ID: 2978143c96154b65b322922b60500749 X-Real-From: huangy81@chinatelecom.cn X-Receive-IP: 172.18.0.188 X-MEDUSA-Status: 0 From: huangy81@chinatelecom.cn To: qemu-devel Subject: [PATCH v22 4/8] softmmu/dirtylimit: Implement vCPU dirtyrate calculation periodically Date: Fri, 1 Apr 2022 01:49:20 +0800 Message-Id: X-Mailer: git-send-email 1.8.3.1 In-Reply-To: References: In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=42.123.76.222; 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, T_SCC_BODY_TEXT_LINE=-0.01 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 , Juan Quintela , Hyman , David Hildenbrand , Richard Henderson , Markus Armbruster , Peter Xu , "Dr. David Alan Gilbert" , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Hyman Huang(黄勇) Introduce the third method GLOBAL_DIRTY_LIMIT of dirty tracking for calculate dirtyrate periodly for dirty page rate limit. Add dirtylimit.c to implement dirtyrate calculation periodly, which will be used for dirty page rate limit. Add dirtylimit.h to export util functions for dirty page rate limit implementation. Signed-off-by: Hyman Huang(黄勇) Reviewed-by: Peter Xu --- include/exec/memory.h | 5 +- include/sysemu/dirtylimit.h | 22 +++++++++ softmmu/dirtylimit.c | 116 ++++++++++++++++++++++++++++++++++++++++++++ softmmu/meson.build | 1 + 4 files changed, 143 insertions(+), 1 deletion(-) create mode 100644 include/sysemu/dirtylimit.h create mode 100644 softmmu/dirtylimit.c diff --git a/include/exec/memory.h b/include/exec/memory.h index 4d5997e..88ca510 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -69,7 +69,10 @@ static inline void fuzz_dma_read_cb(size_t addr, /* Dirty tracking enabled because measuring dirty rate */ #define GLOBAL_DIRTY_DIRTY_RATE (1U << 1) -#define GLOBAL_DIRTY_MASK (0x3) +/* Dirty tracking enabled because dirty limit */ +#define GLOBAL_DIRTY_LIMIT (1U << 2) + +#define GLOBAL_DIRTY_MASK (0x7) extern unsigned int global_dirty_tracking; diff --git a/include/sysemu/dirtylimit.h b/include/sysemu/dirtylimit.h new file mode 100644 index 0000000..da459f0 --- /dev/null +++ b/include/sysemu/dirtylimit.h @@ -0,0 +1,22 @@ +/* + * Dirty page rate limit common functions + * + * Copyright (c) 2022 CHINA TELECOM CO.,LTD. + * + * Authors: + * Hyman Huang(黄勇) + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#ifndef QEMU_DIRTYRLIMIT_H +#define QEMU_DIRTYRLIMIT_H + +#define DIRTYLIMIT_CALC_TIME_MS 1000 /* 1000ms */ + +int64_t vcpu_dirty_rate_get(int cpu_index); +void vcpu_dirty_rate_stat_start(void); +void vcpu_dirty_rate_stat_stop(void); +void vcpu_dirty_rate_stat_initialize(void); +void vcpu_dirty_rate_stat_finalize(void); +#endif diff --git a/softmmu/dirtylimit.c b/softmmu/dirtylimit.c new file mode 100644 index 0000000..6102e8c --- /dev/null +++ b/softmmu/dirtylimit.c @@ -0,0 +1,116 @@ +/* + * Dirty page rate limit implementation code + * + * Copyright (c) 2022 CHINA TELECOM CO.,LTD. + * + * Authors: + * Hyman Huang(黄勇) + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "qemu/main-loop.h" +#include "qapi/qapi-commands-migration.h" +#include "sysemu/dirtyrate.h" +#include "sysemu/dirtylimit.h" +#include "exec/memory.h" +#include "hw/boards.h" + +struct { + VcpuStat stat; + bool running; + QemuThread thread; +} *vcpu_dirty_rate_stat; + +static void vcpu_dirty_rate_stat_collect(void) +{ + VcpuStat stat; + int i = 0; + + /* calculate vcpu dirtyrate */ + vcpu_calculate_dirtyrate(DIRTYLIMIT_CALC_TIME_MS, + &stat, + GLOBAL_DIRTY_LIMIT, + false); + + for (i = 0; i < stat.nvcpu; i++) { + vcpu_dirty_rate_stat->stat.rates[i].id = i; + vcpu_dirty_rate_stat->stat.rates[i].dirty_rate = + stat.rates[i].dirty_rate; + } + + free(stat.rates); +} + +static void *vcpu_dirty_rate_stat_thread(void *opaque) +{ + rcu_register_thread(); + + /* start log sync */ + global_dirty_log_change(GLOBAL_DIRTY_LIMIT, true); + + while (qatomic_read(&vcpu_dirty_rate_stat->running)) { + vcpu_dirty_rate_stat_collect(); + } + + /* stop log sync */ + global_dirty_log_change(GLOBAL_DIRTY_LIMIT, false); + + rcu_unregister_thread(); + return NULL; +} + +int64_t vcpu_dirty_rate_get(int cpu_index) +{ + DirtyRateVcpu *rates = vcpu_dirty_rate_stat->stat.rates; + return qatomic_read(&rates[cpu_index].dirty_rate); +} + +void vcpu_dirty_rate_stat_start(void) +{ + if (qatomic_read(&vcpu_dirty_rate_stat->running)) { + return; + } + + qatomic_set(&vcpu_dirty_rate_stat->running, 1); + qemu_thread_create(&vcpu_dirty_rate_stat->thread, + "dirtyrate-stat", + vcpu_dirty_rate_stat_thread, + NULL, + QEMU_THREAD_JOINABLE); +} + +void vcpu_dirty_rate_stat_stop(void) +{ + qatomic_set(&vcpu_dirty_rate_stat->running, 0); + qemu_mutex_unlock_iothread(); + qemu_thread_join(&vcpu_dirty_rate_stat->thread); + qemu_mutex_lock_iothread(); +} + +void vcpu_dirty_rate_stat_initialize(void) +{ + MachineState *ms = MACHINE(qdev_get_machine()); + int max_cpus = ms->smp.max_cpus; + + vcpu_dirty_rate_stat = + g_malloc0(sizeof(*vcpu_dirty_rate_stat)); + + vcpu_dirty_rate_stat->stat.nvcpu = max_cpus; + vcpu_dirty_rate_stat->stat.rates = + g_malloc0(sizeof(DirtyRateVcpu) * max_cpus); + + vcpu_dirty_rate_stat->running = false; +} + +void vcpu_dirty_rate_stat_finalize(void) +{ + free(vcpu_dirty_rate_stat->stat.rates); + vcpu_dirty_rate_stat->stat.rates = NULL; + + free(vcpu_dirty_rate_stat); + vcpu_dirty_rate_stat = NULL; +} diff --git a/softmmu/meson.build b/softmmu/meson.build index 8138248..3272af1 100644 --- a/softmmu/meson.build +++ b/softmmu/meson.build @@ -4,6 +4,7 @@ specific_ss.add(when: 'CONFIG_SOFTMMU', if_true: [files( 'memory.c', 'physmem.c', 'qtest.c', + 'dirtylimit.c', )]) specific_ss.add(when: ['CONFIG_SOFTMMU', 'CONFIG_TCG'], if_true: [files( -- 1.8.3.1