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SubjectRe: [PATCH tip/core/rcu 0/9] Per-CPU-variable updates
On Tue, Oct 28, 2014 at 5:51 PM, Paul E. McKenney
<paulmck@linux.vnet.ibm.com> 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@gmail.com>


> 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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