From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756020AbbE2JyN (ORCPT ); Fri, 29 May 2015 05:54:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36932 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755929AbbE2Jxx (ORCPT ); Fri, 29 May 2015 05:53:53 -0400 From: Alexander Gordeev To: linux-kernel@vger.kernel.org Cc: Alexander Gordeev , "Paul E. McKenney" , Steven Rostedt Subject: [PATCH v2 0/9] rcu: Cleanup RCU tree initialization Date: Fri, 29 May 2015 11:53:36 +0200 Message-Id: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello Paul, This is 2nd attempt to make RCU tree initialization bit more clear and optimize memory footprint of data associated with the tree. Changes since v1: - patch 3 fixed to accomodate nr_cpus=1, otherwise rcu_num_lvls would yield zero, which is wrong; The series is against "linux-rcu" tree "rcu/dev" branch Thanks! Cc: "Paul E. McKenney" Cc: Steven Rostedt Alexander Gordeev (9): rcu: Panic if RCU tree can not accommodate all CPUs rcu: Remove superfluous local variable in rcu_init_geometry() rcu: Cleanup rcu_init_geometry() code and arithmetics rcu: Simplify rcu_init_geometry() capacity arithmetics rcu: Limit rcu_state::levelcnt[] to RCU_NUM_LVLS items rcu: Limit rcu_capacity[] size to RCU_NUM_LVLS items rcu: Remove unnecessary fields from rcu_state structure rcu: Limit count of static data to the number of RCU levels rcu: Simplify arithmetic to calculate number of RCU nodes kernel/rcu/tree.c | 99 +++++++++++++++++++++--------------------------- kernel/rcu/tree.h | 33 ++++++++-------- kernel/rcu/tree_plugin.h | 4 +- 3 files changed, 61 insertions(+), 75 deletions(-) -- 1.8.3.1