From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dario Faggioli <dario.faggioli@citrix.com>
Subject: [PATCH v2 2/7] xen: credit: (micro) optimize
	csched_runq_steal().
Date: Thu, 06 Apr 2017 10:16:19 +0200
Message-ID: <149146657883.21348.4003508836159742945.stgit@Solace.fritz.box>
References: <149146456487.21348.8554211499146017782.stgit@Solace.fritz.box>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <xen-devel-bounces@lists.xen.org>
Received: from mail6.bemta6.messagelabs.com ([193.109.254.103])
 by lists.xenproject.org with esmtp (Exim 4.84_2)
 (envelope-from <raistlin.df@gmail.com>) id 1cw2ac-0000XJ-Kb
 for xen-devel@lists.xenproject.org; Thu, 06 Apr 2017 08:16:22 +0000
Received: by mail-wr0-f196.google.com with SMTP id t20so9012168wra.2
 for <xen-devel@lists.xenproject.org>; Thu, 06 Apr 2017 01:16:21 -0700 (PDT)
In-Reply-To: <149146456487.21348.8554211499146017782.stgit@Solace.fritz.box>
List-Unsubscribe: <https://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
 <mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <https://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
 <mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Errors-To: xen-devel-bounces@lists.xen.org
Sender: "Xen-devel" <xen-devel-bounces@lists.xen.org>
To: xen-devel@lists.xenproject.org
Cc: George Dunlap <george.dunlap@eu.citrix.com>, Anshul Makkar <anshul.makkar@citrix.com>
List-Id: xen-devel@lists.xenproject.org
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