From patchwork Fri Apr 3 16:51:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 11473179 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 935D1159A for ; Fri, 3 Apr 2020 16:52:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 721BB21655 for ; Fri, 3 Apr 2020 16:52:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="apAArPAa" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404018AbgDCQwN (ORCPT ); Fri, 3 Apr 2020 12:52:13 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:38095 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2404629AbgDCQv7 (ORCPT ); Fri, 3 Apr 2020 12:51:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1585932718; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=dbrbXbuWyZrlOy+yoiqtbmywqt31syCjQq35ukfw0g0=; b=apAArPAaviI2tLrTHj1ai+SlvOL7M8yMKC8WEedKur3dBzOKOtgt97f7Tf902P+O12q/PO +If1xKSKhg3NRk6swXbUQLYFqWtgb+D5kUdezEMyiDDJ07+MowPP3SpJAs+zJB1hvZERsJ OoC1LKUrY6Xx/pKDuOEjemR2o9J0W8E= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-292-Z_cMZfXAOEaxuRn1K_5rog-1; Fri, 03 Apr 2020 12:51:56 -0400 X-MC-Unique: Z_cMZfXAOEaxuRn1K_5rog-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E7DD48018A8; Fri, 3 Apr 2020 16:51:54 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-113-28.ams2.redhat.com [10.36.113.28]) by smtp.corp.redhat.com (Postfix) with ESMTP id 76E8D18A85; Fri, 3 Apr 2020 16:51:52 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: "Michael S. Tsirkin" Cc: kvm list , "virtualization@lists.linux-foundation.org" , Linux Next Mailing List , =?utf-8?q?Eugenio_P?= =?utf-8?q?=C3=A9rez?= , Stephen Rothwell , Cornelia Huck , Halil Pasic , "linux-kernel@vger.kernel.org" , Christian Borntraeger Subject: [PATCH 7/8] tools/virtio: Reset index in virtio_test --reset. Date: Fri, 3 Apr 2020 18:51:18 +0200 Message-Id: <20200403165119.5030-8-eperezma@redhat.com> In-Reply-To: <20200403165119.5030-1-eperezma@redhat.com> References: <20200403165119.5030-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This way behavior for vhost is more like a VM. Signed-off-by: Eugenio Pérez --- tools/virtio/virtio_test.c | 33 ++++++++++++++++++++++++++------- 1 file changed, 26 insertions(+), 7 deletions(-) diff --git a/tools/virtio/virtio_test.c b/tools/virtio/virtio_test.c index 7b7829e510c0..82902fc3ba2a 100644 --- a/tools/virtio/virtio_test.c +++ b/tools/virtio/virtio_test.c @@ -20,7 +20,6 @@ #include "../../drivers/vhost/test.h" #define RANDOM_BATCH -1 -#define RANDOM_RESET -1 /* Unused */ void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end; @@ -49,6 +48,7 @@ struct vdev_info { static const struct vhost_vring_file no_backend = { .fd = -1 }, backend = { .fd = 1 }; +static const struct vhost_vring_state null_state = {}; bool vq_notify(struct virtqueue *vq) { @@ -174,14 +174,19 @@ static void run_test(struct vdev_info *dev, struct vq_info *vq, unsigned len; long long spurious = 0; const bool random_batch = batch == RANDOM_BATCH; + r = ioctl(dev->control, VHOST_TEST_RUN, &test); assert(r >= 0); + if (!reset_n) { + next_reset = INT_MAX; + } + for (;;) { virtqueue_disable_cb(vq->vq); completed_before = completed; started_before = started; do { - const bool reset = reset_n && completed > next_reset; + const bool reset = completed > next_reset; if (random_batch) batch = (random() % vq->vring.num) + 1; @@ -224,10 +229,24 @@ static void run_test(struct vdev_info *dev, struct vq_info *vq, } if (reset) { + struct vhost_vring_state s = { .index = 0 }; + + vq_reset(vq, vq->vring.num, &dev->vdev); + + r = ioctl(dev->control, VHOST_GET_VRING_BASE, + &s); + assert(!r); + + s.num = 0; + r = ioctl(dev->control, VHOST_SET_VRING_BASE, + &null_state); + assert(!r); + r = ioctl(dev->control, VHOST_TEST_SET_BACKEND, &backend); assert(!r); + started = completed; while (completed > next_reset) next_reset += completed; } @@ -249,7 +268,9 @@ static void run_test(struct vdev_info *dev, struct vq_info *vq, test = 0; r = ioctl(dev->control, VHOST_TEST_RUN, &test); assert(r >= 0); - fprintf(stderr, "spurious wakeups: 0x%llx\n", spurious); + fprintf(stderr, + "spurious wakeups: 0x%llx started=0x%lx completed=0x%lx\n", + spurious, started, completed); } const char optstring[] = "h"; @@ -312,7 +333,7 @@ static void help(void) " [--no-virtio-1]" " [--delayed-interrupt]" " [--batch=random/N]" - " [--reset=random/N]" + " [--reset=N]" "\n"); } @@ -360,11 +381,9 @@ int main(int argc, char **argv) case 'r': if (!optarg) { reset = 1; - } else if (0 == strcmp(optarg, "random")) { - reset = RANDOM_RESET; } else { reset = strtol(optarg, NULL, 10); - assert(reset >= 0); + assert(reset > 0); assert(reset < (long)INT_MAX + 1); } break;