From nobody Tue May 13 20:27:27 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; envelope-from=libvir-list-bounces@redhat.com; helo=mx1.redhat.com; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass(p=none dis=none) header.from=redhat.com Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 153874353048857.779118479043404; Fri, 5 Oct 2018 05:45:30 -0700 (PDT) Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 3D05715561; Fri, 5 Oct 2018 12:45:28 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CA50C105705F; Fri, 5 Oct 2018 12:45:27 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 5F02918005B8; Fri, 5 Oct 2018 12:45:27 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id w95CjRJw022966 for ; Fri, 5 Oct 2018 08:45:27 -0400 Received: by smtp.corp.redhat.com (Postfix) id F0ACD341F1; Fri, 5 Oct 2018 12:45:26 +0000 (UTC) Received: from antique-work.brq.redhat.com (unknown [10.43.2.181]) by smtp.corp.redhat.com (Postfix) with ESMTP id 73CE13416C for ; Fri, 5 Oct 2018 12:45:22 +0000 (UTC) From: Pavel Hrdina To: libvir-list@redhat.com Date: Fri, 5 Oct 2018 14:43:45 +0200 Message-Id: <8a8ffa13e7e90be46ec66ab9606cae5a7e713d34.1538742563.git.phrdina@redhat.com> In-Reply-To: References: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-loop: libvir-list@redhat.com Subject: [libvirt] [PATCH v2 24/53] [ACKED] vircgroup: introduce virCgroupV2(Set|Get)BlkioDeviceReadIops X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Fri, 05 Oct 2018 12:45:29 +0000 (UTC) X-ZohoMail: RDMRC_0 RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Signed-off-by: Pavel Hrdina --- src/util/vircgroupv2.c | 70 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c index 83e2a1352f..a6f8799311 100644 --- a/src/util/vircgroupv2.c +++ b/src/util/vircgroupv2.c @@ -751,6 +751,74 @@ virCgroupV2GetBlkioDeviceWeight(virCgroupPtr group, } =20 =20 +static int +virCgroupV2SetBlkioDeviceReadIops(virCgroupPtr group, + const char *path, + unsigned int riops) +{ + VIR_AUTOFREE(char *) str =3D NULL; + VIR_AUTOFREE(char *) blkstr =3D NULL; + + if (!(blkstr =3D virCgroupGetBlockDevString(path))) + return -1; + + if (riops =3D=3D 0) { + if (virAsprintf(&str, "%sriops=3Dmax", blkstr) < 0) + return -1; + } else { + if (virAsprintf(&str, "%sriops=3D%u", blkstr, riops) < 0) + return -1; + } + + return virCgroupSetValueStr(group, + VIR_CGROUP_CONTROLLER_BLKIO, + "io.max", + str); +} + + +static int +virCgroupV2GetBlkioDeviceReadIops(virCgroupPtr group, + const char *path, + unsigned int *riops) +{ + VIR_AUTOFREE(char *) str =3D NULL; + const char *name =3D "riops=3D"; + char *tmp; + + if (virCgroupGetValueForBlkDev(group, + VIR_CGROUP_CONTROLLER_BLKIO, + "io.max", + path, + &str) < 0) { + return -1; + } + + if (!str) { + *riops =3D 0; + } else { + if (!(tmp =3D strstr(str, name))) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Unable to find '%s' limit for block device '= %s'"), + name, path); + return -1; + } + tmp +=3D strlen(name); + + if (STREQLEN(tmp, "max", 3)) { + *riops =3D 0; + } else if (virStrToLong_ui(tmp, NULL, 10, riops) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Unable to parse '%s' as an integer"), + str); + return -1; + } + } + + return 0; +} + + virCgroupBackend virCgroupV2Backend =3D { .type =3D VIR_CGROUP_BACKEND_TYPE_V2, =20 @@ -779,6 +847,8 @@ virCgroupBackend virCgroupV2Backend =3D { .getBlkioIoDeviceServiced =3D virCgroupV2GetBlkioIoDeviceServiced, .setBlkioDeviceWeight =3D virCgroupV2SetBlkioDeviceWeight, .getBlkioDeviceWeight =3D virCgroupV2GetBlkioDeviceWeight, + .setBlkioDeviceReadIops =3D virCgroupV2SetBlkioDeviceReadIops, + .getBlkioDeviceReadIops =3D virCgroupV2GetBlkioDeviceReadIops, }; =20 =20 --=20 2.17.1 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list