linux-kernel - [PATCH v2 0/9] rcu: Cleanup RCU tree initialization

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Date:	Fri, 29 May 2015 11:53:36 +0200
From:	Alexander Gordeev <agordeev@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Alexander Gordeev <agordeev@...hat.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: [PATCH v2 0/9] rcu: Cleanup RCU tree initialization

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" <paulmck@...ux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@...dmis.org>

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

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