From patchwork Mon Dec 16 19:14:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wainer dos Santos Moschetta X-Patchwork-Id: 11295071 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B144113B6 for ; Mon, 16 Dec 2019 19:18:27 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 86BA620717 for ; Mon, 16 Dec 2019 19:18:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="LFRt5T27" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 86BA620717 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:58976 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1igvsw-0001Xs-Ch for patchwork-qemu-devel@patchwork.kernel.org; Mon, 16 Dec 2019 14:18:26 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:35734) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1igvpX-0006Mp-BU for qemu-devel@nongnu.org; Mon, 16 Dec 2019 14:14:56 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1igvpW-0007zW-0w for qemu-devel@nongnu.org; Mon, 16 Dec 2019 14:14:54 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:34512 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1igvpV-0007zH-Tq for qemu-devel@nongnu.org; Mon, 16 Dec 2019 14:14:53 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1576523693; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=AcD9ROGvtSV+wqMEqqKIqhvjn5QGmno0NIrziv6959U=; b=LFRt5T271WJgA3o6+P3jBjQeyEip/nAHOjx2l5sPsz/zo9IOELDqOslEcTEwb96j6DkTPO XI+AjplplHr3+q+5szsviB40Edap/XifnJQIsIURiFCyXNWcG9LEvSYvZni29wtgrp9L9T yLPdrelKK3KPv7gT+CxNLR0DQ07+9qQ= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-352--QYynzvoNhSR8l1J7Yb8Kg-1; Mon, 16 Dec 2019 14:14:52 -0500 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 mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3AD6310054E3; Mon, 16 Dec 2019 19:14:51 +0000 (UTC) Received: from localhost.localdomain (ovpn-116-67.gru2.redhat.com [10.97.116.67]) by smtp.corp.redhat.com (Postfix) with ESMTP id 555915C1B5; Mon, 16 Dec 2019 19:14:49 +0000 (UTC) From: Wainer dos Santos Moschetta To: qemu-devel@nongnu.org Subject: [PATCH v4 2/5] python/qemu: accel: Add list_accel() method Date: Mon, 16 Dec 2019 16:14:35 -0300 Message-Id: <20191216191438.93418-3-wainersm@redhat.com> In-Reply-To: <20191216191438.93418-1-wainersm@redhat.com> References: <20191216191438.93418-1-wainersm@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-MC-Unique: -QYynzvoNhSR8l1J7Yb8Kg-1 X-Mimecast-Spam-Score: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: fam@euphon.net, ehabkost@redhat.com, philmd@redhat.com, jsnow@redhat.com, crosa@redhat.com, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Since commit cbe6d6365a48 the command `qemu -accel help` returns the list of accelerators enabled in the QEMU binary. This adds the list_accel() method which return that same list. Signed-off-by: Wainer dos Santos Moschetta Reviewed-by: Cleber Rosa Tested-by: Cleber Rosa --- python/qemu/accel.py | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/python/qemu/accel.py b/python/qemu/accel.py index cbeac10dd1..7395cee793 100644 --- a/python/qemu/accel.py +++ b/python/qemu/accel.py @@ -14,7 +14,11 @@ accelerators. # the COPYING file in the top-level directory. # +import logging import os +import subprocess + +LOG = logging.getLogger(__name__) # Mapping host architecture to any additional architectures it can # support which often includes its 32 bit cousin. @@ -23,6 +27,25 @@ ADDITIONAL_ARCHES = { "aarch64" : "armhf" } +def list_accel(qemu_bin): + """ + List accelerators enabled in the QEMU binary. + + @param qemu_bin (str): path to the QEMU binary. + @raise Exception: if failed to run `qemu -accel help` + @return a list of accelerator names. + """ + if not qemu_bin: + return [] + try: + out = subprocess.check_output([qemu_bin, '-accel', 'help'], + universal_newlines=True) + except: + LOG.debug("Failed to get the list of accelerators in %s", qemu_bin) + raise + # Skip the first line which is the header. + return [acc.strip() for acc in out.splitlines()[1:]] + def kvm_available(target_arch=None): host_arch = os.uname()[4] if target_arch and target_arch != host_arch: