Re: [PATCH 00/10] rcu: Cleanup RCU tree initialization

From: Paul E. McKenney
Date: Mon Mar 09 2015 - 17:40:31 EST


On Mon, Mar 09, 2015 at 09:34:04AM +0100, Alexander Gordeev wrote:
> Hi Paul,
>
> Here is cleanup of RCU tree initialization rebased on linux-rcu rcu/next
> repo, as you requested. Please, note an extra patch #10 that was not
> present in the first post.
>
> The series successfully passes kernel build test with CONFIG_RCU_FANOUT
> and CONFIG_RCU_FANOUT_LEAF equal to 5.

I queued up 1-9, as discussed and have started testing. I will let you
know how it goes.

Thanx, Paul

> Cc: "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>
>
>
> Alexander Gordeev (10):
> 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
> rcu: Remove unnecessary grpnum field from rcu_node structure
>
> kernel/rcu/tree.c | 102 ++++++++++++++++++++---------------------------
> kernel/rcu/tree.h | 35 ++++++++--------
> kernel/rcu/tree_plugin.h | 4 +-
> 3 files changed, 63 insertions(+), 78 deletions(-)
>
> --
> 1.8.3.1
>

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