From nobody Sun Feb 8 04:23:39 2026 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 ARC-Seal: i=1; a=rsa-sha256; t=1561029965; cv=none; d=zoho.com; s=zohoarc; b=VUeAEOnLQle2SzeameJ903dvHywXrXvY0emp9F2QhAv2MGrIr1U9zD1xqq0OVHSeYKzK7b7smq7LFp7Kl5QdD+jWEzQeX8eKVdk1N3thfQlKktaCXCGFatn953I6xdcMpzWRF7oDzHuZv1qmBqTXcUGOKoq2x4ApCjmkUHtnJSk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1561029965; h=Content-Type:Content-Transfer-Encoding:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=6Cm8+VK/rC8lavg7yVZ2E/DbEyK+/R6f361dGGEPJ+s=; b=Mg3MOP957494LFXpWu/vcv663I7u6R8IvlEzNjQTSXEY5upzCjVxka5eOhlhJSKixaKe9p+hI8tgbyPQBVOuEoHjNzvN+Mg4d3Q5ksPctWiZu2PYiqMZ+wYsN1I8cezfDfNokCQQ+F6UeBa6gNLQZFZYAwjHvmVE/CqJ172jQYw= ARC-Authentication-Results: i=1; mx.zoho.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 header.from= (p=none dis=none) header.from= Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 156102996509234.9920012704514; Thu, 20 Jun 2019 04:26:05 -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 5E69D7E42C; Thu, 20 Jun 2019 11:26:03 +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 3850618A66; Thu, 20 Jun 2019 11:26:03 +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 E8B4B206D2; Thu, 20 Jun 2019 11:26:02 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id x5KBPnhj031692 for ; Thu, 20 Jun 2019 07:25:49 -0400 Received: by smtp.corp.redhat.com (Postfix) id B41EC5D9E5; Thu, 20 Jun 2019 11:25:49 +0000 (UTC) Received: from antique-work.brq.redhat.com (unknown [10.43.2.63]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4006D5D9D2 for ; Thu, 20 Jun 2019 11:25:49 +0000 (UTC) From: Pavel Hrdina To: libvir-list@redhat.com Date: Thu, 20 Jun 2019 13:25:41 +0200 Message-Id: <28da27ff6abcebbeac677e18173fb23d6497a4cc.1561029914.git.phrdina@redhat.com> In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-loop: libvir-list@redhat.com Subject: [libvirt] [PATCH 1/5] util: vircgroup: pass parent cgroup into virCgroupDetectControllersCB 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: , 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 [10.5.110.27]); Thu, 20 Jun 2019 11:26:04 +0000 (UTC) Content-Type: text/plain; charset="utf-8" In cgroups v2 we don't have to detect available controllers every single time if we are creating a new cgroup based on parent cgroup. Signed-off-by: Pavel Hrdina Reviewed-by: J=C3=A1n Tomko --- src/util/vircgroup.c | 2 +- src/util/vircgroupbackend.h | 3 ++- src/util/vircgroupv1.c | 3 ++- src/util/vircgroupv2.c | 17 +++++++++++------ 4 files changed, 16 insertions(+), 9 deletions(-) diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c index f58e336404..bb7452d2a0 100644 --- a/src/util/vircgroup.c +++ b/src/util/vircgroup.c @@ -383,7 +383,7 @@ virCgroupDetect(virCgroupPtr group, =20 for (i =3D 0; i < VIR_CGROUP_BACKEND_TYPE_LAST; i++) { if (group->backends[i]) { - int rc =3D group->backends[i]->detectControllers(group, contro= llers); + int rc =3D group->backends[i]->detectControllers(group, contro= llers, parent); if (rc < 0) return -1; controllersAvailable |=3D rc; diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h index e58e327c68..1fe0851184 100644 --- a/src/util/vircgroupbackend.h +++ b/src/util/vircgroupbackend.h @@ -95,7 +95,8 @@ typedef char * =20 typedef int (*virCgroupDetectControllersCB)(virCgroupPtr group, - int controllers); + int controllers, + virCgroupPtr parent); =20 typedef bool (*virCgroupHasControllerCB)(virCgroupPtr cgroup, diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c index 8ce10d3608..3c195f69ce 100644 --- a/src/util/vircgroupv1.c +++ b/src/util/vircgroupv1.c @@ -420,7 +420,8 @@ virCgroupV1StealPlacement(virCgroupPtr group) =20 static int virCgroupV1DetectControllers(virCgroupPtr group, - int controllers) + int controllers, + virCgroupPtr parent ATTRIBUTE_UNUSED) { size_t i; size_t j; diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c index 0cfbc96264..671a078b23 100644 --- a/src/util/vircgroupv2.c +++ b/src/util/vircgroupv2.c @@ -285,16 +285,21 @@ virCgroupV2ParseControllersFile(virCgroupPtr group) =20 static int virCgroupV2DetectControllers(virCgroupPtr group, - int controllers) + int controllers, + virCgroupPtr parent) { size_t i; =20 - if (virCgroupV2ParseControllersFile(group) < 0) - return -1; + if (parent) { + group->unified.controllers =3D parent->unified.controllers; + } else { + if (virCgroupV2ParseControllersFile(group) < 0) + return -1; =20 - /* In cgroup v2 there is no cpuacct controller, the cpu.stat file alwa= ys - * exists with usage stats. */ - group->unified.controllers |=3D 1 << VIR_CGROUP_CONTROLLER_CPUACCT; + /* In cgroup v2 there is no cpuacct controller, the cpu.stat file = always + * exists with usage stats. */ + group->unified.controllers |=3D 1 << VIR_CGROUP_CONTROLLER_CPUACCT; + } =20 for (i =3D 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) VIR_DEBUG("Controller '%s' present=3D%s", --=20 2.21.0 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list