Re: [PATCH rcu/urgent 0/6] Fixes for RCU/scheduler/irq-threadstrainwreck

From: Peter Zijlstra
Date: Wed Jul 20 2011 - 14:54:45 EST


On Wed, 2011-07-20 at 20:44 +0200, Ingo Molnar wrote:
> * Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> wrote:
>
> > RCU boost is new and counts as strange for another few days at least.
>
> I'd rather prefer a oneliner patch that turns it off in the Kconfig
> for now.
>
> We are awfully late in the -rc cycle and this diffstat:
>
> b/include/linux/sched.h | 3 ++
> b/kernel/rcutree_plugin.h | 6 +++--
> b/kernel/sched.c | 44 ++++++++++++++++++++++++++++++++++-----
> b/kernel/signal.c | 19 +++++++++++------
> b/kernel/softirq.c | 12 +++++++++-
> kernel/rcutree_plugin.h | 51 +++++++++++++++++++++++++++++++++-------------
> 6 files changed, 105 insertions(+), 30 deletions(-)
>
> looks very scary to me.

A lot of that is also relevant to !BOOST.
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