Re: [PATCH 0/4] rcu: Unify a bit [non-]PREEMPT expedited quiescent state report

From: Paul E. McKenney
Date: Thu Sep 16 2021 - 13:26:17 EST


On Thu, Sep 16, 2021 at 02:10:44PM +0200, Frederic Weisbecker wrote:
> This eventually removes rcu_data.exp_deferred_qs to use
> rcu_data.cpu no_qs.b.exp instead.
>
> For those like me who need a headlamp to walk there: https://ibb.co/3d06r0V

Can't have too many headlamps with this code! ;-)

Thanx, Paul

> git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
> rcu/dev
>
> HEAD: 7d9d8a0c6141f95cbac4367b12e755bfabb383ee
>
> Thanks,
> Frederic
> ---
>
> Frederic Weisbecker (4):
> rcu: Ignore rdp.cpu_no_qs.b.exp on premptible RCU's rcu_qs()
> rcu: Remove useless WRITE_ONCE() on rcu_data.exp_deferred_qs
> rcu: Move rcu_data.cpu_no_qs.b.exp reset to rcu_export_exp_rdp()
> rcu: Remove rcu_data.exp_deferred_qs and convert to rcu_data.cpu no_qs.b.exp
>
>
> kernel/rcu/tree.h | 1 -
> kernel/rcu/tree_exp.h | 6 +++---
> kernel/rcu/tree_plugin.h | 24 +++++++++++++-----------
> 3 files changed, 16 insertions(+), 15 deletions(-)