From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759374AbbA1AYU (ORCPT ); Tue, 27 Jan 2015 19:24:20 -0500 Received: from mail-wg0-f49.google.com ([74.125.82.49]:40064 "EHLO mail-wg0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753394AbbA1AYT (ORCPT ); Tue, 27 Jan 2015 19:24:19 -0500 From: Frederic Weisbecker To: Ingo Molnar , Peter Zijlstra Cc: LKML , Frederic Weisbecker , Steven Rostedt , Linus Torvalds Subject: [PATCH 0/4] sched: schedule/preempt optimizations and cleanups Date: Wed, 28 Jan 2015 01:24:08 +0100 Message-Id: <1422404652-29067-1-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 Hey, This series is based on suggestions from Linus. I posted a previous version one month ago then Linus suggested more improvements. Here is the following iteration. The last patch suggests to (ab)use PREEMPT_ACTIVE to disable preemption on schedule(). It's optional as it's a possibily controversial cleanup. Thanks. Frederic Weisbecker (4): sched: Pull resched loop to __schedule() callers sched: Use traced preempt count operations to toggle PREEMPT_ACTIVE sched: Pull preemption disablement to __schedule() caller sched: Account PREEMPT_ACTIVE context as atomic include/linux/preempt_mask.h | 4 ++-- kernel/sched/core.c | 29 +++++++++++++++-------------- 2 files changed, 17 insertions(+), 16 deletions(-) -- 2.1.4