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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 2F873C433E3 for ; Sat, 20 Mar 2021 13:29:02 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id CB5E56196D for ; Sat, 20 Mar 2021 13:29:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CB5E56196D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id C59DB4B4C0; Sat, 20 Mar 2021 09:28:59 -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 PPtjpXvDRKw6; Sat, 20 Mar 2021 09:28:58 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id DC01D4B383; Sat, 20 Mar 2021 09:28:54 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 9900E4B66E for ; Fri, 19 Mar 2021 12:18:10 -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 yLj+OU7Kl5f7 for ; Fri, 19 Mar 2021 12:18:09 -0400 (EDT) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 6B2554B664 for ; Fri, 19 Mar 2021 12:18:09 -0400 (EDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 23191101E; Fri, 19 Mar 2021 09:18:09 -0700 (PDT) Received: from yoan-MS-7758.Home (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C95FA3F718; Fri, 19 Mar 2021 09:18:07 -0700 (PDT) From: Yoan Picchi To: maz@kernel.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu Subject: [PATCH 7/7] KVM: arm64: Add irq_inject counter for kvm_stat Date: Fri, 19 Mar 2021 16:17:11 +0000 Message-Id: <20210319161711.24972-8-yoan.picchi@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210319161711.24972-1-yoan.picchi@arm.com> References: <20210319161711.24972-1-yoan.picchi@arm.com> X-Mailman-Approved-At: Sat, 20 Mar 2021 09:28:53 -0400 Cc: catalin.marinas@arm.com, Yoan Picchi , will@kernel.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: , MIME-Version: 1.0 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 Add a counter for interrupt injections. That is when kvm relay an interrupt to the guest (for instance a timer, or a device interrupt like from a network card) Signed-off-by: Yoan Picchi --- arch/arm64/include/asm/kvm_host.h | 2 ++ arch/arm64/kvm/arm.c | 2 ++ arch/arm64/kvm/guest.c | 2 ++ arch/arm64/kvm/vgic/vgic.c | 2 ++ 4 files changed, 8 insertions(+) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index fa59b669c..253acb8c2 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -551,6 +551,7 @@ struct kvm_vm_stat { ulong memory_slot_unmaped; ulong stage2_unmap_vm; ulong cached_page_invalidated; + ulong irq_inject; }; struct kvm_vcpu_stat { @@ -567,6 +568,7 @@ struct kvm_vcpu_stat { u64 mmio_exit_kernel; u64 regular_page_mapped; u64 huge_page_mapped; + u64 irq_inject; u64 exits; }; diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index fc4c95dd2..841551f14 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -895,6 +895,8 @@ static int vcpu_interrupt_line(struct kvm_vcpu *vcpu, int number, bool level) bool set; unsigned long *hcr; + vcpu->stat.irq_inject++; + if (number == KVM_ARM_IRQ_CPU_IRQ) bit_index = __ffs(HCR_VI); else /* KVM_ARM_IRQ_CPU_FIQ */ diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 129c0d53d..f663b03ae 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -45,6 +45,8 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { VM_STAT("memory_slot_unmaped", memory_slot_unmaped), VM_STAT("stage2_unmap_vm", stage2_unmap_vm), VM_STAT("cached_page_invalidated", cached_page_invalidated), + VM_STAT("irq_inject", irq_inject), + VCPU_STAT("irq_inject", irq_inject), VCPU_STAT("exits", exits), VCPU_STAT("halt_poll_success_ns", halt_poll_success_ns), VCPU_STAT("halt_poll_fail_ns", halt_poll_fail_ns), diff --git a/arch/arm64/kvm/vgic/vgic.c b/arch/arm64/kvm/vgic/vgic.c index 1c597c988..9e504243b 100644 --- a/arch/arm64/kvm/vgic/vgic.c +++ b/arch/arm64/kvm/vgic/vgic.c @@ -458,6 +458,8 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int intid, raw_spin_lock_irqsave(&irq->irq_lock, flags); + kvm->stat.irq_inject++; + if (!vgic_validate_injection(irq, level, owner)) { /* Nothing to see here, move along... */ raw_spin_unlock_irqrestore(&irq->irq_lock, flags); -- 2.17.1 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm