From patchwork Mon May 17 14:53:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jing Zhang X-Patchwork-Id: 440357 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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=unavailable 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 EB203C43462 for ; Mon, 17 May 2021 16:23:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CFE30610A0 for ; Mon, 17 May 2021 16:23:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244955AbhEQQZM (ORCPT ); Mon, 17 May 2021 12:25:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38060 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237739AbhEQQYh (ORCPT ); Mon, 17 May 2021 12:24:37 -0400 Received: from mail-pj1-x104a.google.com (mail-pj1-x104a.google.com [IPv6:2607:f8b0:4864:20::104a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9AB13C030CC0 for ; Mon, 17 May 2021 07:53:21 -0700 (PDT) Received: by mail-pj1-x104a.google.com with SMTP id h23-20020a17090aa897b029015cc61ef388so3455685pjq.9 for ; Mon, 17 May 2021 07:53:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=XH5NpPcNmd+gxQVfKPe6WDEzNvEQPniKjccpZx6vsBc=; b=EhZ5Bm33HJcnmSl7OvV5eM6PMoo9LVlyuj032wMIRtjSZz4ral9Asnk/5ozY8tEpns nv2lyODijPsysasqQ7xP/wyBAm8bGSY2frpQ9gCGBkdpfvct2sHdux+CLENrR08CvNXU gomcNwpfAuxoWUiVn8PBqpXVQsDukbJ1mpPBGE5b2iHYR85NLDY9Q+OLyzdnvCSwDeI0 0IfMedWm5bfvBWmuksE6su9iE3k86pvEcbmJWpkqvkKwDYb/09/VunIT7eR9ssWi3jgP bu+ROs/UpdRtTow3j0oMbwYYKiA/dMq57quL6CNnZ3Bx4L/e+i2qVtPB/3AgMXOCRbcl 1T8A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=XH5NpPcNmd+gxQVfKPe6WDEzNvEQPniKjccpZx6vsBc=; b=k22QElHWg2LC0vBU4XN+B1Y+mpVmoSJZPJqJgiuMPD/RrVNrXfJ0C1iNp5iOa7zRe9 5Gd0bFaiUXbjhHZPOWF1wp0Js0gpV55dfgza/jwZcP8dn91fsX1y7t6aW2IowBGq3nnA Op2Hl0O/1kkhpo6RwEuCVx6oLhVOVDmvBN7JBPv8FxLv7uGWW2zfRp/FQ780jBw1II+Z QpoLruUGtJK61WrPFmBQRih+AEXmFoOQvTChzowJiRiYtGQfGuqpYs2gDH7BRs1hNplQ YaXMdRhQat/ioht+GnkbegIc2sNW4X+vgSzmEmREscYYWgmhEU3+FaSv5YJDqFQtNcVc 3yHA== X-Gm-Message-State: AOAM532IocKRpanfjU1OVBYJSt+A15/xzgVaKgjSUSzei7+0ZbjVriHh JMFsM1tFonfSUQ28YN7pA5CK4bUAxMtJgsvtLQ== X-Google-Smtp-Source: ABdhPJz1suw0yiPNmuxZny/qTOQ/OihMsN6xmSBYrutps7+7/1PsUbjecZ4U202xwHry6d0gLhtXmFlD5FntmB85WQ== X-Received: from jgzg.c.googlers.com ([fda3:e722:ac3:10:7f:e700:c0a8:1acf]) (user=jingzhangos job=sendgmr) by 2002:a17:902:b592:b029:ee:9128:f53f with SMTP id a18-20020a170902b592b02900ee9128f53fmr414192pls.32.1621263201328; Mon, 17 May 2021 07:53:21 -0700 (PDT) Date: Mon, 17 May 2021 14:53:11 +0000 In-Reply-To: <20210517145314.157626-1-jingzhangos@google.com> Message-Id: <20210517145314.157626-2-jingzhangos@google.com> Mime-Version: 1.0 References: <20210517145314.157626-1-jingzhangos@google.com> X-Mailer: git-send-email 2.31.1.751.gd2f1c929bd-goog Subject: [PATCH v5 1/4] KVM: stats: Separate common stats from architecture specific ones From: Jing Zhang To: KVM , KVMARM , LinuxMIPS , KVMPPC , LinuxS390 , Linuxkselftest , Paolo Bonzini , Marc Zyngier , James Morse , Julien Thierry , Suzuki K Poulose , Will Deacon , Huacai Chen , Aleksandar Markovic , Thomas Bogendoerfer , Paul Mackerras , Christian Borntraeger , Janosch Frank , David Hildenbrand , Cornelia Huck , Claudio Imbrenda , Sean Christopherson , Vitaly Kuznetsov , Jim Mattson , Peter Shier , Oliver Upton , David Rientjes , Emanuele Giuseppe Esposito Cc: Jing Zhang Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Put all common statistics in a separate structure to ease statistics handling for the incoming new statistics API. No functional change intended. Signed-off-by: Jing Zhang --- arch/arm64/include/asm/kvm_host.h | 9 ++------- arch/arm64/kvm/guest.c | 12 ++++++------ arch/mips/include/asm/kvm_host.h | 9 ++------- arch/mips/kvm/mips.c | 12 ++++++------ arch/powerpc/include/asm/kvm_host.h | 9 ++------- arch/powerpc/kvm/book3s.c | 12 ++++++------ arch/powerpc/kvm/book3s_hv.c | 12 ++++++------ arch/powerpc/kvm/book3s_pr.c | 2 +- arch/powerpc/kvm/book3s_pr_papr.c | 2 +- arch/powerpc/kvm/booke.c | 14 +++++++------- arch/s390/include/asm/kvm_host.h | 9 ++------- arch/s390/kvm/kvm-s390.c | 12 ++++++------ arch/x86/include/asm/kvm_host.h | 9 ++------- arch/x86/kvm/x86.c | 14 +++++++------- include/linux/kvm_host.h | 9 +++++++-- include/linux/kvm_types.h | 12 ++++++++++++ virt/kvm/kvm_main.c | 14 +++++++------- 17 files changed, 82 insertions(+), 90 deletions(-) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 7cd7d5c8c4bc..f3ad7a20b0af 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -556,16 +556,11 @@ static inline bool __vcpu_write_sys_reg_to_cpu(u64 val, int reg) } struct kvm_vm_stat { - ulong remote_tlb_flush; + struct kvm_vm_stat_common common; }; struct kvm_vcpu_stat { - u64 halt_successful_poll; - u64 halt_attempted_poll; - u64 halt_poll_success_ns; - u64 halt_poll_fail_ns; - u64 halt_poll_invalid; - u64 halt_wakeup; + struct kvm_vcpu_stat_common common; u64 hvc_exit_stat; u64 wfe_exit_stat; u64 wfi_exit_stat; diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 5cb4a1cd5603..0e41331b0911 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -29,18 +29,18 @@ #include "trace.h" struct kvm_stats_debugfs_item debugfs_entries[] = { - VCPU_STAT("halt_successful_poll", halt_successful_poll), - VCPU_STAT("halt_attempted_poll", halt_attempted_poll), - VCPU_STAT("halt_poll_invalid", halt_poll_invalid), - VCPU_STAT("halt_wakeup", halt_wakeup), + VCPU_STAT_COM("halt_successful_poll", halt_successful_poll), + VCPU_STAT_COM("halt_attempted_poll", halt_attempted_poll), + VCPU_STAT_COM("halt_poll_invalid", halt_poll_invalid), + VCPU_STAT_COM("halt_wakeup", halt_wakeup), VCPU_STAT("hvc_exit_stat", hvc_exit_stat), VCPU_STAT("wfe_exit_stat", wfe_exit_stat), VCPU_STAT("wfi_exit_stat", wfi_exit_stat), VCPU_STAT("mmio_exit_user", mmio_exit_user), VCPU_STAT("mmio_exit_kernel", mmio_exit_kernel), VCPU_STAT("exits", exits), - VCPU_STAT("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT("halt_poll_fail_ns", halt_poll_fail_ns), + VCPU_STAT_COM("halt_poll_success_ns", halt_poll_success_ns), + VCPU_STAT_COM("halt_poll_fail_ns", halt_poll_fail_ns), { NULL } }; diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h index fca4547d580f..6f610fbcd8d1 100644 --- a/arch/mips/include/asm/kvm_host.h +++ b/arch/mips/include/asm/kvm_host.h @@ -109,10 +109,11 @@ static inline bool kvm_is_error_hva(unsigned long addr) } struct kvm_vm_stat { - ulong remote_tlb_flush; + struct kvm_vm_stat_common common; }; struct kvm_vcpu_stat { + struct kvm_vcpu_stat_common common; u64 wait_exits; u64 cache_exits; u64 signal_exits; @@ -142,12 +143,6 @@ struct kvm_vcpu_stat { #ifdef CONFIG_CPU_LOONGSON64 u64 vz_cpucfg_exits; #endif - u64 halt_successful_poll; - u64 halt_attempted_poll; - u64 halt_poll_success_ns; - u64 halt_poll_fail_ns; - u64 halt_poll_invalid; - u64 halt_wakeup; }; struct kvm_arch_memory_slot { diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index 4d4af97dcc88..f4fc60c05e9c 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -68,12 +68,12 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { #ifdef CONFIG_CPU_LOONGSON64 VCPU_STAT("vz_cpucfg", vz_cpucfg_exits), #endif - VCPU_STAT("halt_successful_poll", halt_successful_poll), - VCPU_STAT("halt_attempted_poll", halt_attempted_poll), - VCPU_STAT("halt_poll_invalid", halt_poll_invalid), - VCPU_STAT("halt_wakeup", halt_wakeup), - VCPU_STAT("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT("halt_poll_fail_ns", halt_poll_fail_ns), + VCPU_STAT_COM("halt_successful_poll", halt_successful_poll), + VCPU_STAT_COM("halt_attempted_poll", halt_attempted_poll), + VCPU_STAT_COM("halt_poll_invalid", halt_poll_invalid), + VCPU_STAT_COM("halt_wakeup", halt_wakeup), + VCPU_STAT_COM("halt_poll_success_ns", halt_poll_success_ns), + VCPU_STAT_COM("halt_poll_fail_ns", halt_poll_fail_ns), {NULL} }; diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 1e83359f286b..473d9d0804ff 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -80,12 +80,13 @@ struct kvmppc_book3s_shadow_vcpu; struct kvm_nested_guest; struct kvm_vm_stat { - ulong remote_tlb_flush; + struct kvm_vm_stat_common common; ulong num_2M_pages; ulong num_1G_pages; }; struct kvm_vcpu_stat { + struct kvm_vcpu_stat_common common; u64 sum_exits; u64 mmio_exits; u64 signal_exits; @@ -101,14 +102,8 @@ struct kvm_vcpu_stat { u64 emulated_inst_exits; u64 dec_exits; u64 ext_intr_exits; - u64 halt_poll_success_ns; - u64 halt_poll_fail_ns; u64 halt_wait_ns; - u64 halt_successful_poll; - u64 halt_attempted_poll; u64 halt_successful_wait; - u64 halt_poll_invalid; - u64 halt_wakeup; u64 dbell_exits; u64 gdbell_exits; u64 ld; diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 2b691f4d1f26..bd3a10e1fdaf 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -47,14 +47,14 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { VCPU_STAT("dec", dec_exits), VCPU_STAT("ext_intr", ext_intr_exits), VCPU_STAT("queue_intr", queue_intr), - VCPU_STAT("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT("halt_poll_fail_ns", halt_poll_fail_ns), + VCPU_STAT_COM("halt_poll_success_ns", halt_poll_success_ns), + VCPU_STAT_COM("halt_poll_fail_ns", halt_poll_fail_ns), VCPU_STAT("halt_wait_ns", halt_wait_ns), - VCPU_STAT("halt_successful_poll", halt_successful_poll), - VCPU_STAT("halt_attempted_poll", halt_attempted_poll), + VCPU_STAT_COM("halt_successful_poll", halt_successful_poll), + VCPU_STAT_COM("halt_attempted_poll", halt_attempted_poll), VCPU_STAT("halt_successful_wait", halt_successful_wait), - VCPU_STAT("halt_poll_invalid", halt_poll_invalid), - VCPU_STAT("halt_wakeup", halt_wakeup), + VCPU_STAT_COM("halt_poll_invalid", halt_poll_invalid), + VCPU_STAT_COM("halt_wakeup", halt_wakeup), VCPU_STAT("pf_storage", pf_storage), VCPU_STAT("sp_storage", sp_storage), VCPU_STAT("pf_instruc", pf_instruc), diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 28a80d240b76..58e187e03c52 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -236,7 +236,7 @@ static void kvmppc_fast_vcpu_kick_hv(struct kvm_vcpu *vcpu) waitp = kvm_arch_vcpu_get_wait(vcpu); if (rcuwait_wake_up(waitp)) - ++vcpu->stat.halt_wakeup; + ++vcpu->stat.common.halt_wakeup; cpu = READ_ONCE(vcpu->arch.thread_cpu); if (cpu >= 0 && kvmppc_ipi_thread(cpu)) @@ -3925,7 +3925,7 @@ static void kvmppc_vcore_blocked(struct kvmppc_vcore *vc) cur = start_poll = ktime_get(); if (vc->halt_poll_ns) { ktime_t stop = ktime_add_ns(start_poll, vc->halt_poll_ns); - ++vc->runner->stat.halt_attempted_poll; + ++vc->runner->stat.common.halt_attempted_poll; vc->vcore_state = VCORE_POLLING; spin_unlock(&vc->lock); @@ -3942,7 +3942,7 @@ static void kvmppc_vcore_blocked(struct kvmppc_vcore *vc) vc->vcore_state = VCORE_INACTIVE; if (!do_sleep) { - ++vc->runner->stat.halt_successful_poll; + ++vc->runner->stat.common.halt_successful_poll; goto out; } } @@ -3954,7 +3954,7 @@ static void kvmppc_vcore_blocked(struct kvmppc_vcore *vc) do_sleep = 0; /* If we polled, count this as a successful poll */ if (vc->halt_poll_ns) - ++vc->runner->stat.halt_successful_poll; + ++vc->runner->stat.common.halt_successful_poll; goto out; } @@ -3981,13 +3981,13 @@ static void kvmppc_vcore_blocked(struct kvmppc_vcore *vc) ktime_to_ns(cur) - ktime_to_ns(start_wait); /* Attribute failed poll time */ if (vc->halt_poll_ns) - vc->runner->stat.halt_poll_fail_ns += + vc->runner->stat.common.halt_poll_fail_ns += ktime_to_ns(start_wait) - ktime_to_ns(start_poll); } else { /* Attribute successful poll time */ if (vc->halt_poll_ns) - vc->runner->stat.halt_poll_success_ns += + vc->runner->stat.common.halt_poll_success_ns += ktime_to_ns(cur) - ktime_to_ns(start_poll); } diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index d7733b07f489..214caa9d9675 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -493,7 +493,7 @@ static void kvmppc_set_msr_pr(struct kvm_vcpu *vcpu, u64 msr) if (!vcpu->arch.pending_exceptions) { kvm_vcpu_block(vcpu); kvm_clear_request(KVM_REQ_UNHALT, vcpu); - vcpu->stat.halt_wakeup++; + vcpu->stat.common.halt_wakeup++; /* Unset POW bit after we woke up */ msr &= ~MSR_POW; diff --git a/arch/powerpc/kvm/book3s_pr_papr.c b/arch/powerpc/kvm/book3s_pr_papr.c index 031c8015864a..9384625c8051 100644 --- a/arch/powerpc/kvm/book3s_pr_papr.c +++ b/arch/powerpc/kvm/book3s_pr_papr.c @@ -378,7 +378,7 @@ int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd) kvmppc_set_msr_fast(vcpu, kvmppc_get_msr(vcpu) | MSR_EE); kvm_vcpu_block(vcpu); kvm_clear_request(KVM_REQ_UNHALT, vcpu); - vcpu->stat.halt_wakeup++; + vcpu->stat.common.halt_wakeup++; return EMULATE_DONE; case H_LOGICAL_CI_LOAD: return kvmppc_h_pr_logical_ci_load(vcpu); diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 7d5fe43f85c4..07fdd7a1254a 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -49,15 +49,15 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { VCPU_STAT("inst_emu", emulated_inst_exits), VCPU_STAT("dec", dec_exits), VCPU_STAT("ext_intr", ext_intr_exits), - VCPU_STAT("halt_successful_poll", halt_successful_poll), - VCPU_STAT("halt_attempted_poll", halt_attempted_poll), - VCPU_STAT("halt_poll_invalid", halt_poll_invalid), - VCPU_STAT("halt_wakeup", halt_wakeup), + VCPU_STAT_COM("halt_successful_poll", halt_successful_poll), + VCPU_STAT_COM("halt_attempted_poll", halt_attempted_poll), + VCPU_STAT_COM("halt_poll_invalid", halt_poll_invalid), + VCPU_STAT_COM("halt_wakeup", halt_wakeup), VCPU_STAT("doorbell", dbell_exits), VCPU_STAT("guest doorbell", gdbell_exits), - VCPU_STAT("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT("halt_poll_fail_ns", halt_poll_fail_ns), - VM_STAT("remote_tlb_flush", remote_tlb_flush), + VCPU_STAT_COM("halt_poll_success_ns", halt_poll_success_ns), + VCPU_STAT_COM("halt_poll_fail_ns", halt_poll_fail_ns), + VM_STAT_COM("remote_tlb_flush", remote_tlb_flush), { NULL } }; diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 8925f3969478..57a20897f3db 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -361,6 +361,7 @@ struct sie_page { }; struct kvm_vcpu_stat { + struct kvm_vcpu_stat_common common; u64 exit_userspace; u64 exit_null; u64 exit_external_request; @@ -370,13 +371,7 @@ struct kvm_vcpu_stat { u64 exit_validity; u64 exit_instruction; u64 exit_pei; - u64 halt_successful_poll; - u64 halt_attempted_poll; - u64 halt_poll_invalid; u64 halt_no_poll_steal; - u64 halt_wakeup; - u64 halt_poll_success_ns; - u64 halt_poll_fail_ns; u64 instruction_lctl; u64 instruction_lctlg; u64 instruction_stctl; @@ -755,12 +750,12 @@ struct kvm_vcpu_arch { }; struct kvm_vm_stat { + struct kvm_vm_stat_common common; u64 inject_io; u64 inject_float_mchk; u64 inject_pfault_done; u64 inject_service_signal; u64 inject_virtio; - u64 remote_tlb_flush; }; struct kvm_arch_memory_slot { diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 1296fc10f80c..d6bf3372bb10 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -72,13 +72,13 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { VCPU_STAT("exit_program_interruption", exit_program_interruption), VCPU_STAT("exit_instr_and_program_int", exit_instr_and_program), VCPU_STAT("exit_operation_exception", exit_operation_exception), - VCPU_STAT("halt_successful_poll", halt_successful_poll), - VCPU_STAT("halt_attempted_poll", halt_attempted_poll), - VCPU_STAT("halt_poll_invalid", halt_poll_invalid), + VCPU_STAT_COM("halt_successful_poll", halt_successful_poll), + VCPU_STAT_COM("halt_attempted_poll", halt_attempted_poll), + VCPU_STAT_COM("halt_poll_invalid", halt_poll_invalid), VCPU_STAT("halt_no_poll_steal", halt_no_poll_steal), - VCPU_STAT("halt_wakeup", halt_wakeup), - VCPU_STAT("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT("halt_poll_fail_ns", halt_poll_fail_ns), + VCPU_STAT_COM("halt_wakeup", halt_wakeup), + VCPU_STAT_COM("halt_poll_success_ns", halt_poll_success_ns), + VCPU_STAT_COM("halt_poll_fail_ns", halt_poll_fail_ns), VCPU_STAT("instruction_lctlg", instruction_lctlg), VCPU_STAT("instruction_lctl", instruction_lctl), VCPU_STAT("instruction_stctl", instruction_stctl), diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 55efbacfc244..5bfd6893fbf6 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1127,6 +1127,7 @@ struct kvm_arch { }; struct kvm_vm_stat { + struct kvm_vm_stat_common common; ulong mmu_shadow_zapped; ulong mmu_pte_write; ulong mmu_pde_zapped; @@ -1134,13 +1135,13 @@ struct kvm_vm_stat { ulong mmu_recycled; ulong mmu_cache_miss; ulong mmu_unsync; - ulong remote_tlb_flush; ulong lpages; ulong nx_lpage_splits; ulong max_mmu_page_hash_collisions; }; struct kvm_vcpu_stat { + struct kvm_vcpu_stat_common common; u64 pf_fixed; u64 pf_guest; u64 tlb_flush; @@ -1154,10 +1155,6 @@ struct kvm_vcpu_stat { u64 nmi_window_exits; u64 l1d_flush; u64 halt_exits; - u64 halt_successful_poll; - u64 halt_attempted_poll; - u64 halt_poll_invalid; - u64 halt_wakeup; u64 request_irq_exits; u64 irq_exits; u64 host_state_reload; @@ -1168,8 +1165,6 @@ struct kvm_vcpu_stat { u64 irq_injections; u64 nmi_injections; u64 req_event; - u64 halt_poll_success_ns; - u64 halt_poll_fail_ns; u64 nested_run; u64 directed_yield_attempted; u64 directed_yield_successful; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 9b6bca616929..9a93d80caff6 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -226,10 +226,10 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { VCPU_STAT("irq_window", irq_window_exits), VCPU_STAT("nmi_window", nmi_window_exits), VCPU_STAT("halt_exits", halt_exits), - VCPU_STAT("halt_successful_poll", halt_successful_poll), - VCPU_STAT("halt_attempted_poll", halt_attempted_poll), - VCPU_STAT("halt_poll_invalid", halt_poll_invalid), - VCPU_STAT("halt_wakeup", halt_wakeup), + VCPU_STAT_COM("halt_successful_poll", halt_successful_poll), + VCPU_STAT_COM("halt_attempted_poll", halt_attempted_poll), + VCPU_STAT_COM("halt_poll_invalid", halt_poll_invalid), + VCPU_STAT_COM("halt_wakeup", halt_wakeup), VCPU_STAT("hypercalls", hypercalls), VCPU_STAT("request_irq", request_irq_exits), VCPU_STAT("irq_exits", irq_exits), @@ -241,8 +241,8 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { VCPU_STAT("nmi_injections", nmi_injections), VCPU_STAT("req_event", req_event), VCPU_STAT("l1d_flush", l1d_flush), - VCPU_STAT("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT("halt_poll_fail_ns", halt_poll_fail_ns), + VCPU_STAT_COM("halt_poll_success_ns", halt_poll_success_ns), + VCPU_STAT_COM("halt_poll_fail_ns", halt_poll_fail_ns), VCPU_STAT("nested_run", nested_run), VCPU_STAT("directed_yield_attempted", directed_yield_attempted), VCPU_STAT("directed_yield_successful", directed_yield_successful), @@ -253,7 +253,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { VM_STAT("mmu_recycled", mmu_recycled), VM_STAT("mmu_cache_miss", mmu_cache_miss), VM_STAT("mmu_unsync", mmu_unsync), - VM_STAT("remote_tlb_flush", remote_tlb_flush), + VM_STAT_COM("remote_tlb_flush", remote_tlb_flush), VM_STAT("largepages", lpages, .mode = 0444), VM_STAT("nx_largepages_splitted", nx_lpage_splits, .mode = 0444), VM_STAT("max_mmu_page_hash_collisions", max_mmu_page_hash_collisions), diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 2f34487e21f2..97700e41db3b 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1243,10 +1243,15 @@ struct kvm_stats_debugfs_item { #define KVM_DBGFS_GET_MODE(dbgfs_item) \ ((dbgfs_item)->mode ? (dbgfs_item)->mode : 0644) -#define VM_STAT(n, x, ...) \ +#define VM_STAT(n, x, ...) \ { n, offsetof(struct kvm, stat.x), KVM_STAT_VM, ## __VA_ARGS__ } -#define VCPU_STAT(n, x, ...) \ +#define VCPU_STAT(n, x, ...) \ { n, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU, ## __VA_ARGS__ } +#define VM_STAT_COM(n, x, ...) \ + { n, offsetof(struct kvm, stat.common.x), KVM_STAT_VM, ## __VA_ARGS__ } +#define VCPU_STAT_COM(n, x, ...) \ + { n, offsetof(struct kvm_vcpu, stat.common.x), \ + KVM_STAT_VCPU, ## __VA_ARGS__ } extern struct kvm_stats_debugfs_item debugfs_entries[]; extern struct dentry *kvm_debugfs_dir; diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h index a7580f69dda0..87eb05ad678b 100644 --- a/include/linux/kvm_types.h +++ b/include/linux/kvm_types.h @@ -76,5 +76,17 @@ struct kvm_mmu_memory_cache { }; #endif +struct kvm_vm_stat_common { + ulong remote_tlb_flush; +}; + +struct kvm_vcpu_stat_common { + u64 halt_successful_poll; + u64 halt_attempted_poll; + u64 halt_poll_invalid; + u64 halt_wakeup; + u64 halt_poll_success_ns; + u64 halt_poll_fail_ns; +}; #endif /* __KVM_TYPES_H__ */ diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 6b4feb92dc79..34a4cf265297 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -330,7 +330,7 @@ void kvm_flush_remote_tlbs(struct kvm *kvm) */ if (!kvm_arch_flush_remote_tlb(kvm) || kvm_make_all_cpus_request(kvm, KVM_REQ_TLB_FLUSH)) - ++kvm->stat.remote_tlb_flush; + ++kvm->stat.common.remote_tlb_flush; cmpxchg(&kvm->tlbs_dirty, dirty_count, 0); } EXPORT_SYMBOL_GPL(kvm_flush_remote_tlbs); @@ -2940,9 +2940,9 @@ static inline void update_halt_poll_stats(struct kvm_vcpu *vcpu, u64 poll_ns, bool waited) { if (waited) - vcpu->stat.halt_poll_fail_ns += poll_ns; + vcpu->stat.common.halt_poll_fail_ns += poll_ns; else - vcpu->stat.halt_poll_success_ns += poll_ns; + vcpu->stat.common.halt_poll_success_ns += poll_ns; } /* @@ -2960,16 +2960,16 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu) if (vcpu->halt_poll_ns && !kvm_arch_no_poll(vcpu)) { ktime_t stop = ktime_add_ns(ktime_get(), vcpu->halt_poll_ns); - ++vcpu->stat.halt_attempted_poll; + ++vcpu->stat.common.halt_attempted_poll; do { /* * This sets KVM_REQ_UNHALT if an interrupt * arrives. */ if (kvm_vcpu_check_block(vcpu) < 0) { - ++vcpu->stat.halt_successful_poll; + ++vcpu->stat.common.halt_successful_poll; if (!vcpu_valid_wakeup(vcpu)) - ++vcpu->stat.halt_poll_invalid; + ++vcpu->stat.common.halt_poll_invalid; goto out; } poll_end = cur = ktime_get(); @@ -3027,7 +3027,7 @@ bool kvm_vcpu_wake_up(struct kvm_vcpu *vcpu) waitp = kvm_arch_vcpu_get_wait(vcpu); if (rcuwait_wake_up(waitp)) { WRITE_ONCE(vcpu->ready, true); - ++vcpu->stat.halt_wakeup; + ++vcpu->stat.common.halt_wakeup; return true; } From patchwork Mon May 17 14:53:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jing Zhang X-Patchwork-Id: 440356 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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=unavailable 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 A2C1AC4360C for ; 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Mon, 17 May 2021 07:53:24 -0700 (PDT) Date: Mon, 17 May 2021 14:53:13 +0000 In-Reply-To: <20210517145314.157626-1-jingzhangos@google.com> Message-Id: <20210517145314.157626-4-jingzhangos@google.com> Mime-Version: 1.0 References: <20210517145314.157626-1-jingzhangos@google.com> X-Mailer: git-send-email 2.31.1.751.gd2f1c929bd-goog Subject: [PATCH v5 3/4] KVM: stats: Add documentation for statistics data binary interface From: Jing Zhang To: KVM , KVMARM , LinuxMIPS , KVMPPC , LinuxS390 , Linuxkselftest , Paolo Bonzini , Marc Zyngier , James Morse , Julien Thierry , Suzuki K Poulose , Will Deacon , Huacai Chen , Aleksandar Markovic , Thomas Bogendoerfer , Paul Mackerras , Christian Borntraeger , Janosch Frank , David Hildenbrand , Cornelia Huck , Claudio Imbrenda , Sean Christopherson , Vitaly Kuznetsov , Jim Mattson , Peter Shier , Oliver Upton , David Rientjes , Emanuele Giuseppe Esposito Cc: Jing Zhang Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Update KVM API documentation for binary statistics. Signed-off-by: Jing Zhang --- Documentation/virt/kvm/api.rst | 171 +++++++++++++++++++++++++++++++++ 1 file changed, 171 insertions(+) diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index 7fcb2fd38f42..9a6aa9770dfd 100644 --- a/Documentation/virt/kvm/api.rst +++ b/Documentation/virt/kvm/api.rst @@ -5034,6 +5034,169 @@ see KVM_XEN_VCPU_SET_ATTR above. The KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADJUST type may not be used with the KVM_XEN_VCPU_GET_ATTR ioctl. +4.130 KVM_STATS_GETFD +--------------------- + +:Capability: KVM_CAP_STATS_BINARY_FD +:Architectures: all +:Type: vm ioctl, vcpu ioctl +:Parameters: none +:Returns: statistics file descriptor on success, < 0 on error + +Errors: + + ====== ====================================================== + ENOMEM if the fd could not be created due to lack of memory + EMFILE if the number of opened files exceeds the limit + ====== ====================================================== + +The file descriptor can be used to read VM/vCPU statistics data in binary +format. The file data is organized into three blocks as below: ++-------------+ +| Header | ++-------------+ +| Descriptors | ++-------------+ +| Stats Data | ++-------------+ + +The Header block is always at the start of the file. It is only needed to be +read one time after a system boot. +It is in the form of ``struct kvm_stats_header`` as below:: + + #define KVM_STATS_ID_MAXLEN 64 + + struct kvm_stats_header { + char id[KVM_STATS_ID_MAXLEN]; + __u32 name_size; + __u32 count; + __u32 desc_offset; + __u32 data_offset; + }; + +The ``id`` field is identification for the corresponding KVM statistics. For +KVM statistics, it is in the form of "kvm-{kvm pid}", like "kvm-12345". For +VCPU statistics, it is in the form of "kvm-{kvm pid}/vcpu-{vcpu id}", like +"kvm-12345/vcpu-12". + +The ``name_size`` field is the size (byte) of the statistics name string +(including trailing '\0') appended to the end of every statistics descriptor. + +The ``count`` field is the number of statistics. + +The ``desc_offset`` field is the offset of the Descriptors block from the start +of the file indicated by the file descriptor. + +The ``data_offset`` field is the offset of the Stats Data block from the start +of the file indicated by the file descriptor. + +The Descriptors block is only needed to be read once after a system boot. It is +an array of ``struct kvm_stats_desc`` as below:: + + #define KVM_STATS_TYPE_SHIFT 0 + #define KVM_STATS_TYPE_MASK (0xF << KVM_STATS_TYPE_SHIFT) + #define KVM_STATS_TYPE_CUMULATIVE (0x0 << KVM_STATS_TYPE_SHIFT) + #define KVM_STATS_TYPE_INSTANT (0x1 << KVM_STATS_TYPE_SHIFT) + #define KVM_STATS_TYPE_MAX KVM_STATS_TYPE_INSTANT + + #define KVM_STATS_UNIT_SHIFT 4 + #define KVM_STATS_UNIT_MASK (0xF << KVM_STATS_UNIT_SHIFT) + #define KVM_STATS_UNIT_NONE (0x0 << KVM_STATS_UNIT_SHIFT) + #define KVM_STATS_UNIT_BYTES (0x1 << KVM_STATS_UNIT_SHIFT) + #define KVM_STATS_UNIT_SECONDS (0x2 << KVM_STATS_UNIT_SHIFT) + #define KVM_STATS_UNIT_CYCLES (0x3 << KVM_STATS_UNIT_SHIFT) + #define KVM_STATS_UNIT_MAX KVM_STATS_UNIT_CYCLES + + #define KVM_STATS_SCALE_SHIFT 8 + #define KVM_STATS_SCALE_MASK (0xF << KVM_STATS_SCALE_SHIFT) + #define KVM_STATS_SCALE_POW10 (0x0 << KVM_STATS_SCALE_SHIFT) + #define KVM_STATS_SCALE_POW2 (0x1 << KVM_STATS_SCALE_SHIFT) + #define KVM_STATS_SCALE_MAX KVM_STATS_SCALE_POW2 + + struct kvm_stats_desc { + __u32 flags; + __s16 exponent; + __u16 size; + __u32 unused1; + __u32 unused2; + char name[0]; + }; + +The ``flags`` field contains the type and unit of the statistics data described +by this descriptor. The following flags are supported: + * ``KVM_STATS_TYPE_CUMULATIVE`` + The statistics data is cumulative. The value of data can only be increased. + Most of the counters used in KVM are of this type. + The corresponding ``count`` filed for this type is always 1. + * ``KVM_STATS_TYPE_INSTANT`` + The statistics data is instantaneous. Its value can be increased or + decreased. This type is usually used as a measurement of some resources, + like the number of dirty pages, the number of large pages, etc. + The corresponding ``count`` field for this type is always 1. + * ``KVM_STATS_UNIT_NONE`` + There is no unit for the value of statistics data. This usually means that + the value is a simple counter of an event. + * ``KVM_STATS_UNIT_BYTES`` + It indicates that the statistics data is used to measure memory size, in the + unit of Byte, KiByte, MiByte, GiByte, etc. The unit of the data is + determined by the ``exponent`` field in the descriptor. The + ``KVM_STATS_SCALE_POW2`` flag is valid in this case. The unit of the data is + determined by ``pow(2, exponent)``. For example, if value is 10, + ``exponent`` is 20, which means the unit of statistics data is MiByte, we + can get the statistics data in the unit of Byte by + ``value * pow(2, exponent) = 10 * pow(2, 20) = 10 MiByte`` which is + 10 * 1024 * 1024 Bytes. + * ``KVM_STATS_UNIT_SECONDS`` + It indicates that the statistics data is used to measure time/latency, in + the unit of nanosecond, microsecond, millisecond and second. The unit of the + data is determined by the ``exponent`` field in the descriptor. The + ``KVM_STATS_SCALE_POW10`` flag is valid in this case. The unit of the data + is determined by ``pow(10, exponent)``. For example, if value is 2000000, + ``exponent`` is -6, which means the unit of statistics data is microsecond, + we can get the statistics data in the unit of second by + ``value * pow(10, exponent) = 2000000 * pow(10, -6) = 2 seconds``. + * ``KVM_STATS_UNIT_CYCLES`` + It indicates that the statistics data is used to measure CPU clock cycles. + The ``KVM_STATS_SCALE_POW10`` flag is valid in this case. For example, if + value is 200, ``exponent`` is 4, we can get the number of CPU clock cycles + by ``value * pow(10, exponent) = 200 * pow(10, 4) = 2000000``. + +The ``exponent`` field is the scale of corresponding statistics data. It has two +values as follows: + * ``KVM_STATS_SCALE_POW10`` + The scale is based on power of 10. It is used for measurement of time and + CPU clock cycles. + * ``KVM_STATS_SCALE_POW2`` + The scale is based on power of 2. It is used for measurement of memory size. + +The ``size`` field is the number of values of this statistics data. It is in the +unit of ``unsigned long`` for VCPU or ``__u64`` for VM. + +The ``unused1`` and ``unused2`` fields are reserved for future +support for other types of statistics data, like log/linear histogram. + +The ``name`` field points to the name string of the statistics data. The name +string starts at the end of ``struct kvm_stats_desc``. +The maximum length (including trailing '\0') is indicated by ``name_size`` +in ``struct kvm_stats_header``. + +The Stats Data block contains an array of data values of type ``struct +kvm_vm_stats_data`` or ``struct kvm_vcpu_stats_data``. It would be read by +user space periodically to pull statistics data. +The order of data value in Stats Data block is the same as the order of +descriptors in Descriptors block. + * Statistics data for VM:: + + struct kvm_vm_stats_data { + unsigned long value[0]; + }; + + * Statistics data for VCPU:: + + struct kvm_vcpu_stats_data { + __u64 value[0]; + }; + 5. The kvm_run structure ======================== @@ -6891,3 +7054,11 @@ This capability is always enabled. This capability indicates that the KVM virtual PTP service is supported in the host. A VMM can check whether the service is available to the guest on migration. + +8.33 KVM_CAP_STATS_BINARY_FD +---------------------------- + +:Architectures: all + +This capability indicates the feature that user space can create get a file +descriptor for every VM and VCPU to read statistics data in binary format.