From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966163AbcHECgm (ORCPT ); Thu, 4 Aug 2016 22:36:42 -0400 Received: from mail-wm0-f65.google.com ([74.125.82.65]:33966 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754438AbcHECg1 (ORCPT ); Thu, 4 Aug 2016 22:36:27 -0400 Message-ID: <1470364583.3998.4.camel@gmail.com> Subject: Re: The timer softirq on the RT kernel From: Mike Galbraith To: yunhong jiang Cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, rostedt@goodmis.org Date: Fri, 05 Aug 2016 04:36:23 +0200 In-Reply-To: <20160804173641.4defb00b@jnakajim-build> References: <20160804173641.4defb00b@jnakajim-build> Content-Type: text/plain; charset="us-ascii" X-Mailer: Evolution 3.16.5 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2016-08-04 at 17:36 -0700, yunhong jiang wrote: > Hi,Mike & Steven > On https://lkml.org/lkml/2015/3/24/1178, the patch of "timers: > do not raise softirq unconditionally" is reverted. Thanks for > Steven's > detailed comments, it's quite clear explained. > I remember Mike has a patch trying to fix it but late > abandoned. Do you still have any plan to work on this? Otherwise, I > will have a try. Sebastian converted the lock to raw in -rt, so nohz_full now works without any extra hackery. -Mike