From nobody Mon Feb 9 22:19:49 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1552511770689922.1952305893569; Wed, 13 Mar 2019 14:16:10 -0700 (PDT) Received: from localhost ([127.0.0.1]:50980 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h4BEP-00049J-C6 for importer@patchew.org; Wed, 13 Mar 2019 17:16:09 -0400 Received: from eggs.gnu.org ([209.51.188.92]:51192) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h4B8T-000778-6U for qemu-devel@nongnu.org; Wed, 13 Mar 2019 17:10:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h4B0T-0006kF-8Z for qemu-devel@nongnu.org; Wed, 13 Mar 2019 17:01:46 -0400 Received: from mx1.redhat.com ([209.132.183.28]:44442) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1h4B0T-0006jl-08 for qemu-devel@nongnu.org; Wed, 13 Mar 2019 17:01:45 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 50B447CFA8 for ; Wed, 13 Mar 2019 21:01:44 +0000 (UTC) Received: from lacos-laptop-7.usersys.redhat.com (ovpn-120-225.rdu2.redhat.com [10.10.120.225]) by smtp.corp.redhat.com (Postfix) with ESMTP id 225A13844; Wed, 13 Mar 2019 21:01:41 +0000 (UTC) From: Laszlo Ersek To: berrange@redhat.com, eblake@redhat.com, imammedo@redhat.com, kraxel@redhat.com, mprivozn@redhat.com, mst@redhat.com, philmd@redhat.com, qemu-devel@nongnu.org Date: Wed, 13 Mar 2019 22:00:50 +0100 Message-Id: <20190313210057.32584-6-lersek@redhat.com> In-Reply-To: <20190313210057.32584-1-lersek@redhat.com> References: <20190313210057.32584-1-lersek@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Wed, 13 Mar 2019 21:01:44 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2 05/12] roms/edk2-funcs.sh: add the qemu_edk2_get_thread_count() function 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" The edk2 "build" utility natively supports building modules (that is, INF files) in parallel. The feature is not useful when building a single module (with the "-m" option), but it is useful for platform firmware builds (which include many modules). Add a function that determines the "-n" option argument for "build", from the MAKEFLAGS variable (i.e. based on the presence of a make job server). Signed-off-by: Laszlo Ersek Reviewed-by: Philippe Mathieu-Daud=C3=A9 Tested-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Michal Privoznik Reviewed-by: Michael S. Tsirkin --- Notes: v2: =20 - pick up Phil's R-b / T-b =20 - pick up Michal's and Michael's R-b's roms/edk2-funcs.sh | 25 ++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/roms/edk2-funcs.sh b/roms/edk2-funcs.sh index d1cb1e4a111e..a9fae7ee891b 100644 --- a/roms/edk2-funcs.sh +++ b/roms/edk2-funcs.sh @@ -226,3 +226,28 @@ qemu_edk2_set_cross_env() =20 eval "export $cross_prefix_var=3D\$cross_prefix" } + + +# Determine the "-n" option argument (that is, the number of modules to bu= ild +# in parallel) for the edk2 "build" utility. Print the result to the stand= ard +# output. +# +# Parameters: +# $1: the value of the MAKEFLAGS variable +qemu_edk2_get_thread_count() +{ + local makeflags=3D"$1" + + if [[ "$makeflags" =3D=3D *--jobserver-auth=3D* ]] || + [[ "$makeflags" =3D=3D *--jobserver-fds=3D* ]]; then + # If there is a job server, allow the edk2 "build" utility to parallel= ize + # as many module builds as there are logical CPUs in the system. The "= make" + # instances forked by "build" are supposed to limit themselves through= the + # job server. The zero value below causes the edk2 "build" utility to = fetch + # the logical CPU count with Python's multiprocessing.cpu_count() meth= od. + printf '0\n' + else + # Build a single module at a time. + printf '1\n' + fi +} --=20 2.19.1.3.g30247aa5d201