From nobody Mon Apr 29 10:19:17 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1496325373535129.05042394456314; Thu, 1 Jun 2017 06:56:13 -0700 (PDT) Received: from localhost ([::1]:44842 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dGQaA-0005gQ-WB for importer@patchew.org; Thu, 01 Jun 2017 09:56:11 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57216) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dGQYw-0004tI-OZ for qemu-devel@nongnu.org; Thu, 01 Jun 2017 09:54:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dGQYs-0006OR-R1 for qemu-devel@nongnu.org; Thu, 01 Jun 2017 09:54:54 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36726) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dGQYs-0006ON-Le; Thu, 01 Jun 2017 09:54:50 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A05843F21F; Thu, 1 Jun 2017 13:54:49 +0000 (UTC) Received: from donizetti.redhat.com (ovpn-117-20.ams2.redhat.com [10.36.117.20]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v51Dslgi018246; Thu, 1 Jun 2017 09:54:48 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com A05843F21F Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=pbonzini@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com A05843F21F From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Thu, 1 Jun 2017 15:54:47 +0200 Message-Id: <20170601135447.2674-1-pbonzini@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Thu, 01 Jun 2017 13:54:49 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH] virtio: add virtqueue_alloc_element tracepoint X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-trivial@nongnu.org, mst@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This tracepoint can help diagnosing failures due to memory fragmentation in the guest. Signed-off-by: Paolo Bonzini --- hw/virtio/trace-events | 1 + hw/virtio/virtio.c | 1 + 2 files changed, 2 insertions(+) diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 1f7a7c1ae1..e24d8fa997 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -1,6 +1,7 @@ # See docs/tracing.txt for syntax documentation. =20 # hw/virtio/virtio.c +virtqueue_alloc_element(void *elem, size_t sz, unsigned in_num, unsigned o= ut_num) "elem %p size %zd in_num %u out_num %u" virtqueue_fill(void *vq, const void *elem, unsigned int len, unsigned int = idx) "vq %p elem %p len %u idx %u" virtqueue_flush(void *vq, unsigned int count) "vq %p count %u" virtqueue_pop(void *vq, void *elem, unsigned int in_num, unsigned int out_= num) "vq %p elem %p in_num %u out_num %u" diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 890b4d7eb7..286446b261 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -816,6 +816,7 @@ static void *virtqueue_alloc_element(size_t sz, unsigne= d out_num, unsigned in_nu =20 assert(sz >=3D sizeof(VirtQueueElement)); elem =3D g_malloc(out_sg_end); + trace_virtqueue_alloc_element(elem, sz, in_num, out_num); elem->out_num =3D out_num; elem->in_num =3D in_num; elem->in_addr =3D (void *)elem + in_addr_ofs; --=20 2.13.0