From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751788AbcF0EWp (ORCPT ); Mon, 27 Jun 2016 00:22:45 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:38244 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750705AbcF0EWn (ORCPT ); Mon, 27 Jun 2016 00:22:43 -0400 X-IBM-Helo: d03dlp02.boulder.ibm.com X-IBM-MailFrom: paulmck@linux.vnet.ibm.com Date: Sun, 26 Jun 2016 21:22:36 -0700 From: "Paul E. McKenney" To: Thomas Gleixner Cc: LKML , Ingo Molnar , Peter Zijlstra , Eric Dumazet , Frederic Weisbecker , Chris Mason , Arjan van de Ven , rt@linutronix.de, Rik van Riel , Linus Torvalds , George Spelvin , Len Brown , Josh Triplett Subject: Re: [patch V3 00/22] timer: Refactor the timer wheel Reply-To: paulmck@linux.vnet.ibm.com References: <20160624140325.554996200@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160624140325.554996200@linutronix.de> User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16062704-0016-0000-0000-0000040BB691 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16062704-0017-0000-0000-00003092A75B Message-Id: <20160627042236.GC4309@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-06-26_15:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1606270050 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jun 24, 2016 at 02:32:00PM -0000, Thomas Gleixner wrote: > This is the third version of the timer wheel rework series. The previous > versions can be found here: > > V1: http://lkml.kernel.org/r/20160613070440.950649741@linutronix.de > V2: http://lkml.kernel.org/r/20160617121134.417319325@linutronix.de > > The series is also available in git: > > git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.timers > > Changes vs. V2: > > - Removed the 1000Hz granularity reduction to 4ms. Eric explained that > datacenter workloads require the granularity in the first level wheel. > > - Fixed the typo in tilepro. > > - Converted sigtimedwait() to hrtimers > > - To avoid the cascading I extended the wheel by another level. This removes > the rarely executed cascading code path, but increases the storage size for > HZ>100 slightly. If the tiny folks care, there is an simple option to cut > the storage size in half for the price of reduced granularity. > > Thanks, And this series avoids the strange SRCU behavior that I saw with the last version. So looks to be getting there! I will be torturing it more vigorously, but looking good so far. Thanx, Paul > tglx > > ---- > arch/x86/kernel/apic/x2apic_uv_x.c | 4 > arch/x86/kernel/cpu/mcheck/mce.c | 4 > block/genhd.c | 5 > drivers/cpufreq/powernv-cpufreq.c | 5 > drivers/mmc/host/jz4740_mmc.c | 2 > drivers/net/ethernet/tile/tilepro.c | 4 > drivers/power/bq27xxx_battery.c | 5 > drivers/tty/metag_da.c | 4 > drivers/tty/mips_ejtag_fdc.c | 4 > drivers/usb/host/ohci-hcd.c | 1 > drivers/usb/host/xhci.c | 2 > include/linux/list.h | 10 > include/linux/timer.h | 34 - > kernel/signal.c | 24 > kernel/time/tick-internal.h | 1 > kernel/time/tick-sched.c | 46 - > kernel/time/timer.c | 1096 +++++++++++++++++++++--------------- > lib/random32.c | 1 > net/ipv4/inet_connection_sock.c | 7 > net/ipv4/inet_timewait_sock.c | 5 > 20 files changed, 734 insertions(+), 530 deletions(-) > >