From nobody Tue May 13 16:27:27 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 1538469952192725.109118121031; Tue, 2 Oct 2018 01:45:52 -0700 (PDT) Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 587CF30C6D6C; Tue, 2 Oct 2018 08:45:50 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 177BE70C20; Tue, 2 Oct 2018 08:45:50 +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 B40DD41F7D; Tue, 2 Oct 2018 08:45:49 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id w928j8wE031460 for ; Tue, 2 Oct 2018 04:45:08 -0400 Received: by smtp.corp.redhat.com (Postfix) id B2981100194A; Tue, 2 Oct 2018 08:45:08 +0000 (UTC) Received: from antique-work.brq.redhat.com (unknown [10.43.2.181]) by smtp.corp.redhat.com (Postfix) with ESMTP id 379D91001903 for ; Tue, 2 Oct 2018 08:45:08 +0000 (UTC) From: Pavel Hrdina To: libvir-list@redhat.com Date: Tue, 2 Oct 2018 10:44:12 +0200 Message-Id: <3545f8b28817d1cc00c93d6ffbed82215b17ee3c.1538469654.git.phrdina@redhat.com> In-Reply-To: References: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-loop: libvir-list@redhat.com Subject: [libvirt] [PATCH 28/53] vircgroup: introduce virCgroupV2SetBlkioDeviceWriteBps 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 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.43]); Tue, 02 Oct 2018 08:45:51 +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 | 64 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c index 88bd9fb37c..d48e9db559 100644 --- a/src/util/vircgroupv2.c +++ b/src/util/vircgroupv2.c @@ -955,6 +955,68 @@ virCgroupV2GetBlkioDeviceReadBps(virCgroupPtr group, } =20 =20 +static int +virCgroupV2SetBlkioDeviceWriteBps(virCgroupPtr group, + const char *path, + unsigned long long wbps) +{ + VIR_AUTOFREE(char *) str =3D NULL; + VIR_AUTOFREE(char *) blkstr =3D NULL; + + if (!(blkstr =3D virCgroupGetBlockDevString(path))) + return -1; + + if (wbps =3D=3D 0) { + if (virAsprintf(&str, "%swbps=3Dmax", blkstr) < 0) + return -1; + } else { + if (virAsprintf(&str, "%swbps=3D%llu", blkstr, wbps) < 0) + return -1; + } + + return virCgroupSetValueStr(group, + VIR_CGROUP_CONTROLLER_BLKIO, + "io.max", + str); +} + + +static int +virCgroupV2GetBlkioDeviceWriteBps(virCgroupPtr group, + const char *path, + unsigned long long *wbps) +{ + VIR_AUTOFREE(char *) str =3D NULL; + char *tmp; + + if (virCgroupGetValueForBlkDev(group, + VIR_CGROUP_CONTROLLER_BLKIO, + "io.max", + path, + &str) < 0) { + return -1; + } + + if (!str) { + *wbps =3D 0; + } else { + tmp =3D strstr(str, "wbps=3D"); + tmp +=3D strlen("wbps=3D"); + + if (STREQLEN(tmp, "max", 3)) { + *wbps =3D 0; + } else if (virStrToLong_ull(tmp, NULL, 10, wbps) < 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 @@ -989,6 +1051,8 @@ virCgroupBackend virCgroupV2Backend =3D { .getBlkioDeviceWriteIops =3D virCgroupV2GetBlkioDeviceWriteIops, .setBlkioDeviceReadBps =3D virCgroupV2SetBlkioDeviceReadBps, .getBlkioDeviceReadBps =3D virCgroupV2GetBlkioDeviceReadBps, + .setBlkioDeviceWriteBps =3D virCgroupV2SetBlkioDeviceWriteBps, + .getBlkioDeviceWriteBps =3D virCgroupV2GetBlkioDeviceWriteBps, }; =20 =20 --=20 2.17.1 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list