On Wed, Jun 03, 2015 at 08:18:22AM +0200, Alexander Gordeev wrote:
> Hello Paul,
>
> This is 3rd attempt to make RCU tree initialization bit more
> clear and optimize memory footprint of data associated with
> the tree.
>
> Changes since v2:
> - patch 1 fixed to avoid a panic in case rcu_fanout_leaf
> is out of bounds;
>
> 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" <paul...@linux.vnet.ibm.com>
> Cc: Steven Rostedt <rost...@goodmis.org>
Queued for testing, replacing the earlier series, thank you!
Thanx, Paul
> 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 | 109
> +++++++++++++++++++++--------------------------
> kernel/rcu/tree.h | 33 +++++++-------
> kernel/rcu/tree_plugin.h | 4 +-
> 3 files changed, 67 insertions(+), 79 deletions(-)
>
> --
> 1.8.3.1
>
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