Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755442Ab2KNUhy (ORCPT ); Wed, 14 Nov 2012 15:37:54 -0500 Received: from mail-vb0-f46.google.com ([209.85.212.46]:33046 "EHLO mail-vb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753480Ab2KNUhx (ORCPT ); Wed, 14 Nov 2012 15:37:53 -0500 From: Frederic Weisbecker To: Ingo Molnar Cc: LKML , Frederic Weisbecker , Peter Zijlstra , Thomas Gleixner , Andrew Morton , Steven Rostedt , Paul Gortmaker , Anish Kumar Subject: [GIT PULL] printk: Make it usable on nohz cpus Date: Wed, 14 Nov 2012 21:37:30 +0100 Message-Id: <1352925457-15700-1-git-send-email-fweisbec@gmail.com> X-Mailer: git-send-email 1.7.5.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3110 Lines: 81 Ingo, Please pull the printk support in dynticks mode patches that can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git tags/printk-dynticks-for-mingo This branch is based on top of v3.7-rc4 Head is 2fb933986dcef2db1344712162a1feb8d5736ff8: printk: Wake up klogd using irq_work (2012-11-14 17:45:37 +0100) Since last version, very few things have changed: * Added acks from Steve on patches 1/7 and 2/7 * Fixed an arch_needs_cpu() redefinition due to misordered headers (reported by Wu Fengguang). If you get further acks from Peterz or anybody, feel free to cherry pick the patches instead. Or I can rebase my patches to add them, either way. Thanks. ---------------------------------------------------------------- Support for printk in dynticks mode: * Fix two races in irq work claiming * Generalize irq_work support to all archs * Don't stop tick with irq works pending. This fix is generally useful and concerns archs that can't raise self IPIs. * Introduce "lazy" irq works that can wait for the next tick to be executed, unless it's stopped. * Implement klogd wake up using irq work. This removes the ad-hoc printk_tick()/printk_needs_cpu() hooks and make it working even in dynticks mode. Signed-off-by: Frederic Weisbecker ---------------------------------------------------------------- Frederic Weisbecker (7): irq_work: Fix racy IRQ_WORK_BUSY flag setting irq_work: Fix racy check on work pending flag irq_work: Remove CONFIG_HAVE_IRQ_WORK nohz: Add API to check tick state irq_work: Don't stop the tick with pending works irq_work: Make self-IPIs optable printk: Wake up klogd using irq_work arch/alpha/Kconfig | 1 - arch/arm/Kconfig | 1 - arch/arm64/Kconfig | 1 - arch/blackfin/Kconfig | 1 - arch/frv/Kconfig | 1 - arch/hexagon/Kconfig | 1 - arch/mips/Kconfig | 1 - arch/parisc/Kconfig | 1 - arch/powerpc/Kconfig | 1 - arch/s390/Kconfig | 1 - arch/sh/Kconfig | 1 - arch/sparc/Kconfig | 1 - arch/x86/Kconfig | 1 - drivers/staging/iio/trigger/Kconfig | 1 - include/linux/irq_work.h | 20 +++++++++ include/linux/printk.h | 3 -- include/linux/tick.h | 17 +++++++- init/Kconfig | 5 +-- kernel/irq_work.c | 76 +++++++++++++++++++++++------------ kernel/printk.c | 36 +++++++++-------- kernel/time/tick-sched.c | 7 ++-- kernel/timer.c | 1 - 22 files changed, 112 insertions(+), 67 deletions(-) -- 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/