Re: [PATCH tip/core/rcu 0/9] Per-CPU-variable updates

[Pranith Kumar]

On Tue, Oct 28, 2014 at 5:51 PM, Paul E. McKenney
<paulmck@xxxxxxxxxxxxxxxxxx> wrote:
> Hello!
>
> This series updates RCU's handling of per-CPU variables, mostly
> moving from "cpu" function arguments to various "this_"-style accessors
> for per-CPU variables:
>
> 1.      Drop the rdtp argument from RCU's dyntick-idle and sysidle
>         functions, substituting this_cpu_ptr(), courtesy of Christoph
>         Lameter.
>
> 2.      Use DEFINE_PER_CPU_SHARED_ALIGNED for rcu_data structures in
>         order to avoid false sharing with other per-CPU variables.
>
> 3-9.    Remove "cpu" arguments from a number of RCU functions that are
>         only ever invoked on that CPU, and use appropriate "this_"-style
>         accesssors for the per-CPU variables.
>

Reviewd-by: Pranith Kumar <bobby.prani@xxxxxxxxx>


>                                                         Thanx, Paul
>
> ------------------------------------------------------------------------
>
>  b/include/linux/rcupdate.h |    2 +-
>  b/include/linux/rcutiny.h  |    2 +-
>  b/include/linux/rcutree.h  |    4 ++--
>  b/kernel/cpu.c             |   19 +++++++++++++------
>  b/kernel/rcu/tiny.c        |    2 +-
>  b/kernel/rcu/tree.c        |   25 +++++++++++++------------
>  b/kernel/rcu/tree.h        |    4 ++--
>  b/kernel/rcu/tree_plugin.h |   11 +++++++----
>  b/kernel/sched/core.c      |    2 +-
>  b/kernel/softirq.c         |    2 +-
>  b/kernel/time/tick-sched.c |    2 +-
>  b/kernel/time/timer.c      |    3 +--
>  include/linux/rcupdate.h   |    2 +-
>  include/linux/rcutree.h    |    2 +-
>  kernel/rcu/tree.c          |   30 +++++++++++++++---------------
>  kernel/rcu/tree.h          |    8 ++++----
>  kernel/rcu/tree_plugin.h   |   42 +++++++++++++++++++++---------------------
>  17 files changed, 86 insertions(+), 76 deletions(-)
>



-- 
Pranith
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