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 X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 7EDF9C4320A for ; Thu, 29 Jul 2021 19:56:48 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 079C260F46 for ; Thu, 29 Jul 2021 19:56:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 079C260F46 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 9FAAB4B0B2; Thu, 29 Jul 2021 15:56:47 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@google.com Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Qe8H6u5SBh1d; Thu, 29 Jul 2021 15:56:46 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 8605E4B0CF; Thu, 29 Jul 2021 15:56:46 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 9E84C4B0BC for ; Thu, 29 Jul 2021 15:56:45 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zAeQEJqPWw+t for ; Thu, 29 Jul 2021 15:56:44 -0400 (EDT) Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id C3D774B0B2 for ; Thu, 29 Jul 2021 15:56:44 -0400 (EDT) Received: by mail-yb1-f201.google.com with SMTP id a188-20020a25cac50000b029055d47682463so7970644ybg.5 for ; Thu, 29 Jul 2021 12:56:44 -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=pgN08b/yk00GBllZokVtpDSIFyPI7a31tDiORmsCfCE=; b=YYy23uG1UwrvJN92781dawTqDn7rZMmOuoeD+4Fa5cMOURrHKF4+7b+PbMfknbbdxA gAO0wbzpUDvMB/7yIdtwvwc5NMSXTrutcgwm4KEhR8VtONe2DahfE+BQsbia6PESTKca 0+xIPncJvhoGX1fBAjyBzaTX/3YpdeWuQTVe/qzrGc1zEJV/3vyTEgzpd5gTGq0vXQEm LeylFxvvkaMHXaRdAiuuEjB2TqJ5zZ2ew7iYg9KMiHHP25U1dRuUvOY07cskE37oe/XJ DRTHHBc88F/Vh8xcmrroJWrPOD9C13B3s6UPhD860jT69w1S70hx2aht/1RR8+d6xe5w Vv0Q== 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=pgN08b/yk00GBllZokVtpDSIFyPI7a31tDiORmsCfCE=; b=P/KyCYZvaF/K83QlOCyphBvXBaLNZd+1cbX8uk0sO2KGNtPZ4K4Mqcz0e9xxDHoYOI pQL+MJDlgYYRm/xYs0C1gfC1+Q4hD3ntDRui5rRIKT2rYSCg1KzlTcXQh5Hox/QHPxb+ nFv2HySQmOSHSFgkNdXcpEr3adX/i4EE7yOAxg1zUlwLB7PGuh6+AnpHJz6M9hColETi TkKO+A7skZCsGr/9fB0VVqZfbw/5L5VZScd2/7gWj2UBNQoQJQRMioUdGYJS8lsYyr1y ZvEU8Ut/8Y4S/gtnttJCVvM1qRlRtz/r40HFqnird06+BKUjXQApoHj95FrPjSsG/qQB Yo5g== X-Gm-Message-State: AOAM532MEMZRZBncFAR6neF9RuHlVGfMm86/97wq2hlxB+oBJA05e4du aZjpxl1ndNKHoi5A/OfIpIOB1IBuu+wviJPo4Ahlod3MI1bzQapPq8UEsZgHkYSDmG2qd/NTSYk h22qAlFJ5hYJsc4QcjsxK9eqGUq/zzIFOrhzlewdryHZf/ReZsETf5aGKgpjQEa1p9mw4yA== X-Google-Smtp-Source: ABdhPJxv5Q9iSjza/dtoJWD8Ji6uBJa+KRn2GwxkRTQBooW5PwZGIYhH1qvOF/ZaptJAN9C14jeegk4SH7g= X-Received: from oupton.c.googlers.com ([fda3:e722:ac3:cc00:2b:ff92:c0a8:404]) (user=oupton job=sendgmr) by 2002:a25:7a03:: with SMTP id v3mr9033669ybc.202.1627588604139; Thu, 29 Jul 2021 12:56:44 -0700 (PDT) Date: Thu, 29 Jul 2021 19:56:30 +0000 In-Reply-To: <20210729195632.489978-1-oupton@google.com> Message-Id: <20210729195632.489978-2-oupton@google.com> Mime-Version: 1.0 References: <20210729195632.489978-1-oupton@google.com> X-Mailer: git-send-email 2.32.0.554.ge1b32706d8-goog Subject: [PATCH 1/3] KVM: arm64: Record number of signal exits as a vCPU stat From: Oliver Upton To: kvmarm@lists.cs.columbia.edu Cc: Shakeel Butt , kvm@vger.kernel.org, Peter Zijlstra , Marc Zyngier , Peter Shier , linux-kernel@vger.kernel.org, Guangyu Shi , Will Deacon , Andy Lutomirski , Catalin Marinas , Paolo Bonzini , Thomas Gleixner , linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Most other architectures that implement KVM record a statistic indicating the number of times a vCPU has exited due to a pending signal. Add support for that stat to arm64. Cc: Jing Zhang Signed-off-by: Oliver Upton --- arch/arm64/include/asm/kvm_host.h | 1 + arch/arm64/kvm/arm.c | 1 + arch/arm64/kvm/guest.c | 3 ++- 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 41911585ae0c..70e129f2b574 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -576,6 +576,7 @@ struct kvm_vcpu_stat { u64 wfi_exit_stat; u64 mmio_exit_user; u64 mmio_exit_kernel; + u64 signal_exits; u64 exits; }; diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index e9a2b8f27792..60d0a546d7fd 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -783,6 +783,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) if (signal_pending(current)) { ret = -EINTR; run->exit_reason = KVM_EXIT_INTR; + ++vcpu->stat.signal_exits; } /* diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 1dfb83578277..50fc16ad872f 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -50,7 +50,8 @@ const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = { STATS_DESC_COUNTER(VCPU, wfi_exit_stat), STATS_DESC_COUNTER(VCPU, mmio_exit_user), STATS_DESC_COUNTER(VCPU, mmio_exit_kernel), - STATS_DESC_COUNTER(VCPU, exits) + STATS_DESC_COUNTER(VCPU, exits), + STATS_DESC_COUNTER(VCPU, signal_exits), }; static_assert(ARRAY_SIZE(kvm_vcpu_stats_desc) == sizeof(struct kvm_vcpu_stat) / sizeof(u64)); -- 2.32.0.554.ge1b32706d8-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm