Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423267AbbEOANI (ORCPT ); Thu, 14 May 2015 20:13:08 -0400 Received: from mail-ig0-f171.google.com ([209.85.213.171]:37501 "EHLO mail-ig0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423045AbbEOANE (ORCPT ); Thu, 14 May 2015 20:13:04 -0400 From: Ruchi Kandoi To: kandoiruchi@google.com, "Rafael J. Wysocki" , Viresh Kumar , Ingo Molnar , Peter Zijlstra , Andrew Morton , Oleg Nesterov , "Kirill A. Shutemov" , Vladimir Davydov , Heinrich Schuchardt , Thomas Gleixner , Kees Cook , Konstantin Khlebnikov , Davidlohr Bueso , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/2] Adds cpu power accounting per-pid basis. Date: Thu, 14 May 2015 17:12:48 -0700 Message-Id: <1431648770-7404-1-git-send-email-kandoiruchi@google.com> X-Mailer: git-send-email 2.2.0.rc0.207.ga3a616c Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1433 Lines: 31 These patches add a mechanism which will accurately caculate the CPU power used by all the processes in the system. In order to account for the power used by all the processes a data field "cpu_power" has been added in the task_struct. This field adds power for both the system as well as user time. cpu_power contains the total amount of charge(in uAmsec units) used by the process. This model takes into account the frequency at which the process was running(i.e higher power for processes running at higher frequencies). It requires the cpufreq_stats module to be initialized with the current numbers for each of the CPU core at each frequency. This will be initialized during init time. Ruchi Kandoi (2): cpufreq_stats: Adds sysfs file /sys/devices/system/cpu/cpufreq/current_in_state sched: cpufreq: Adds a field cpu_power in the task_struct drivers/cpufreq/cpufreq_stats.c | 191 +++++++++++++++++++++++++++++++++++++++- include/linux/cpufreq.h | 8 ++ include/linux/sched.h | 2 + kernel/fork.c | 1 + kernel/sched/cputime.c | 7 ++ 5 files changed, 207 insertions(+), 2 deletions(-) -- 2.2.0.rc0.207.ga3a616c -- 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/