From patchwork Tue Jan 26 13:46:54 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 573267 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47D491402A9 for ; Wed, 27 Jan 2016 00:55:42 +1100 (AEDT) Received: from localhost ([::1]:43986 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aO45s-0000pV-DO for incoming@patchwork.ozlabs.org; Tue, 26 Jan 2016 08:55:40 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35062) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aO3yU-0000AC-CO for qemu-devel@nongnu.org; Tue, 26 Jan 2016 08:48:03 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aO3yS-00044n-6P for qemu-devel@nongnu.org; Tue, 26 Jan 2016 08:48:02 -0500 Received: from mx1.redhat.com ([209.132.183.28]:40905) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aO3yS-00044j-0T for qemu-devel@nongnu.org; Tue, 26 Jan 2016 08:48:00 -0500 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (Postfix) with ESMTPS id 9AEEA72; Tue, 26 Jan 2016 13:47:59 +0000 (UTC) Received: from 640k.localdomain.com (ovpn-112-67.ams2.redhat.com [10.36.112.67]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u0QDlNqX028272; Tue, 26 Jan 2016 08:47:58 -0500 From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Tue, 26 Jan 2016 14:46:54 +0100 Message-Id: <1453816041-36362-23-git-send-email-pbonzini@redhat.com> In-Reply-To: <1453816041-36362-1-git-send-email-pbonzini@redhat.com> References: <1453816041-36362-1-git-send-email-pbonzini@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: Janosch Frank Subject: [Qemu-devel] [PULL 22/49] scripts/kvm/kvm_stat: Make cpu detection a function X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Janosch Frank The online cpus detection method is in the Stats class but does not use any class variables. Moving it out of the class to the platform detection function makes the Stats class more readable. Signed-off-by: Janosch Frank Message-Id: <1452525484-32309-17-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini --- scripts/kvm/kvm_stat | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat index 5b6742a..af24f2d 100755 --- a/scripts/kvm/kvm_stat +++ b/scripts/kvm/kvm_stat @@ -279,6 +279,20 @@ def walkdir(path): """ return next(os.walk(path)) + +def get_online_cpus(): + cpulist = [] + pattern = r'cpu([0-9]+)' + basedir = '/sys/devices/system/cpu' + for entry in os.listdir(basedir): + match = re.match(pattern, entry) + if not match: + continue + path = os.path.join(basedir, entry, 'online') + if os.path.isfile(path) and open(path).read().strip() == '1': + cpulist.append(int(match.group(1))) + return cpulist + filters = {} filters['kvm_userspace_exit'] = ('reason', USERSPACE_EXIT_REASONS) if EXIT_REASONS: @@ -375,23 +389,9 @@ class TracepointProvider(object): def fields(self): return self._fields - def _online_cpus(self): - l = [] - pattern = r'cpu([0-9]+)' - basedir = '/sys/devices/system/cpu' - for entry in os.listdir(basedir): - match = re.match(pattern, entry) - if not match: - continue - path = os.path.join(basedir, entry, 'online') - if os.path.exists(path) and open(path).read().strip() != '1': - continue - l.append(int(match.group(1))) - return l - def _setup(self, _fields): self._fields = _fields - cpus = self._online_cpus() + cpus = get_online_cpus() # The constant is needed as a buffer for python libs, std # streams and other files that the script opens.