From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755202AbcK1VfX (ORCPT ); Mon, 28 Nov 2016 16:35:23 -0500 Received: from mga05.intel.com ([192.55.52.43]:49502 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754172AbcK1VfT (ORCPT ); Mon, 28 Nov 2016 16:35:19 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,565,1473145200"; d="scan'208";a="906469967" From: Jacob Pan To: Peter Zijlstra , Ingo Molnar , Thomas Gleixner , LKML , Linux PM Cc: Arjan van de Ven , Srinivas Pandruvada , Len Brown , Rafael Wysocki , Eduardo Valentin , Zhang Rui , Petr Mladek , Sebastian Andrzej Siewior , Jacob Pan Subject: [PATCH v4 0/2] Stop sched tick in idle injection task Date: Mon, 28 Nov 2016 13:33:27 -0800 Message-Id: <1480368809-23685-1-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changelog: v4: - Misc comments from Ingo are addressed, including style fix, timeout handling, fork(). - Dropped powerclamp patch from this set, move to its own series. v3: - Rearrange idle.c change based on Rafael's suggestion. v2: - Moved duration timer from powerclamp driver to play_idle() - Unexport cpuidle_use_deepest_state - Indentation fix Idle injection drivers today use RT threads to run idle loop. There are efficiency and accounting issues with the current intel_powerclamp.c and acpi_pad.c. A while ago, I posted CFS based idle injection patch trying to address them: https://lkml.org/lkml/2015/11/13/576 Peter proposed another approach with the introduction of a PF_IDLE flag. This patchset is based on his original posting: https://lkml.org/lkml/2014/6/4/56 These patches apply on top of the kworker and cpu hotplug state machine changes made to Intel powerclamp driver. https://lkml.org/lkml/2016/10/17/362 Similar changes to ACPI PAD driver is developed along with other enhancements. It will be posted after this patchset is accepted. Jacob Pan (1): cpuidle: allow setting deepest idle Peter Zijlstra (1): idle: add support for tasks that inject idle drivers/cpuidle/cpuidle.c | 11 +++ include/linux/cpu.h | 2 + include/linux/cpuidle.h | 4 +- include/linux/sched.h | 3 +- kernel/fork.c | 2 +- kernel/sched/core.c | 1 + kernel/sched/idle.c | 175 +++++++++++++++++++++++++++++----------------- 7 files changed, 129 insertions(+), 69 deletions(-) -- 1.9.1