From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751495AbcFXOeK (ORCPT ); Fri, 24 Jun 2016 10:34:10 -0400 Received: from www.linutronix.de ([62.245.132.108]:53014 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751357AbcFXOeH (ORCPT ); Fri, 24 Jun 2016 10:34:07 -0400 Message-Id: <20160624140325.554996200@linutronix.de> User-Agent: quilt/0.63-1 Date: Fri, 24 Jun 2016 14:32:00 -0000 From: Thomas Gleixner To: LKML Cc: Ingo Molnar , Peter Zijlstra , "Paul E. McKenney" , 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: [patch V3 00/22] timer: Refactor the timer wheel X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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, 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(-)