From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753406AbbEKPIc (ORCPT ); Mon, 11 May 2015 11:08:32 -0400 Received: from mail-wi0-f170.google.com ([209.85.212.170]:35612 "EHLO mail-wi0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751200AbbEKPI3 (ORCPT ); Mon, 11 May 2015 11:08:29 -0400 From: Frederic Weisbecker To: Peter Zijlstra Cc: LKML , Frederic Weisbecker , Ingo Molnar , Thomas Gleixner , Linus Torvalds Subject: [RFC PATCH 0/7] preempt: A few headers cleanups and preempt_schedule*() optimizations Date: Mon, 11 May 2015 17:08:17 +0200 Message-Id: <1431356904-4624-1-git-send-email-fweisbec@gmail.com> X-Mailer: git-send-email 2.1.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Optimizing the preempt_count operations (PREEMPT_ACTIVE + preempt_disable()) in a single operation from __schedule() callers was an idea of Linus a few month ago. Here is a re-iteration, with a few header cleanups along the way. git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git sched/preempt HEAD: c8bda0e6afc163e7e2804d30b9e4301652dc679c Thanks, Frederic --- Frederic Weisbecker (7): preempt: Merge preempt_mask.h into preempt.h preempt: Rearrange a few symbols after headers merge preempt: Rename PREEMPT_CHECK_OFFSET to PREEMPT_DISABLE_OFFSET preempt: Disable preemption from preempt_schedule*() callers sched: Pull preemption disablement duty up to __schedule() callers preempt: Fix out of date comment preempt: Remove PREEMPT_ACTIVE unmasking off in_atomic() arch/m68k/include/asm/irqflags.h | 3 - include/linux/bottom_half.h | 1 - include/linux/hardirq.h | 2 +- include/linux/preempt.h | 123 ++++++++++++++++++++++++++++++++++++++- include/linux/preempt_mask.h | 117 ------------------------------------- include/linux/sched.h | 2 +- kernel/sched/core.c | 29 +++------ lib/radix-tree.c | 2 +- 8 files changed, 133 insertions(+), 146 deletions(-)