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" <paul...@linux.vnet.ibm.com>
Cc: Steven Rostedt <rost...@goodmis.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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