Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753421AbbFXPIc (ORCPT ); Wed, 24 Jun 2015 11:08:32 -0400 Received: from mail-lb0-f174.google.com ([209.85.217.174]:33572 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752679AbbFXPIZ (ORCPT ); Wed, 24 Jun 2015 11:08:25 -0400 MIME-Version: 1.0 In-Reply-To: <1435157880-22925-11-git-send-email-riel@redhat.com> References: <1435157880-22925-1-git-send-email-riel@redhat.com> <1435157880-22925-11-git-send-email-riel@redhat.com> From: Andy Lutomirski Date: Wed, 24 Jun 2015 08:08:03 -0700 Message-ID: Subject: Re: [RFC PATCH 10/11] nohz,kvm,time: skip vtime accounting at kernel entry & exit To: Rik van Riel Cc: "linux-kernel@vger.kernel.org" , fweisbec@redhat.com, Peter Zijlstra , Ingo Molnar , Thomas Gleixner Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 683 Lines: 17 On Wed, Jun 24, 2015 at 7:57 AM, wrote: > From: Rik van Riel > > When timer statistics are sampled from a remote CPU, vtime calculations > at the kernel/user and kernel/guest boundary are no longer necessary. > Skip them. I plan to do my very best to clean up x86's calls into this code, but I will try to avoid touching the implementations. I'm happy to leave an eventual cleanup to you :) --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/