From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756990Ab2FOON2 (ORCPT ); Fri, 15 Jun 2012 10:13:28 -0400 Received: from www.linutronix.de ([62.245.132.108]:41572 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756842Ab2FOONZ (ORCPT ); Fri, 15 Jun 2012 10:13:25 -0400 Message-Id: <20120615140217.933711648@linutronix.de> User-Agent: quilt/0.48-1 Date: Fri, 15 Jun 2012 14:13:19 -0000 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Ingo Molnar , "Srivatsa S. Bhat" , Rusty Russell , "Paul E. McKenney" , Tejun Heo Subject: [RFC patch V2 0/7] Per cpu thread hotplug infrastructure 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 The following series implements the infrastructure for parking and unparking kernel threads to avoid the full teardown and fork on cpu hotplug operations along with management infrastructure for hotplug and users. Changes since V1: - Addressed the review comments - Fixed a missing state update in parkme (reported by Paul) - Simplified rcu_yield() - Added Pauls RCU conversion Full diffstat below. Due to the RCU cleanup we now remove more code than we add. :) Thanks, tglx --- drivers/infiniband/hw/ehca/ehca_irq.c | 240 ++++++++------------- drivers/infiniband/hw/ehca/ehca_irq.h | 5 include/linux/kthread.h | 11 include/linux/smpboot.h | 40 +++ kernel/cpu.c | 10 kernel/kthread.c | 184 ++++++++++++++-- kernel/rcutree.c | 12 - kernel/rcutree.h | 15 - kernel/rcutree_plugin.h | 375 +++++----------------------------- kernel/rcutree_trace.c | 3 kernel/smpboot.c | 206 ++++++++++++++++++ kernel/smpboot.h | 4 kernel/softirq.c | 84 +------ kernel/watchdog.c | 232 ++++++--------------- 14 files changed, 678 insertions(+), 743 deletions(-)