linux-kernel - Re: [GIT PULL tip/core/rcu+preempt] Fix RT raw/non-raw lock ordering

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Date:   Fri, 9 Oct 2020 10:13:13 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     tglx@...utronix.de, linux-kernel@...r.kernel.org,
        kernel-team@...com, urezki@...il.com, lkp@...el.com,
        julia.lawall@...ia.fr, mhocko@...nel.org,
        mgorman@...hsingularity.net, vbabka@...e.cz, peterz@...radead.org,
        torvalds@...ux-foundation.org
Subject: Re: [GIT PULL tip/core/rcu+preempt] Fix RT raw/non-raw lock ordering

On Fri, Oct 09, 2020 at 06:55:00PM +0200, Ingo Molnar wrote:
> 
> * Paul E. McKenney <paulmck@...nel.org> wrote:
> 
> > Hello!
> > 
> > This pull request contains Thomas Gleixner's "Make preempt count
> > unconditional" series [1], but with the addition of a kvfree_rcu() bug-fix
> > commit making use of this PREEMPT_COUNT addition.  This series reduces
> > the size of the kernel by almost 100 lines of code and is intended for
> > the upcoming v5.10 merge window.
> 
> > Thomas Gleixner (13):
> >       lib/debug: Remove pointless ARCH_NO_PREEMPT dependencies
> >       preempt: Make preempt count unconditional
> >       preempt: Cleanup PREEMPT_COUNT leftovers
> >       lockdep: Cleanup PREEMPT_COUNT leftovers
> >       mm/pagemap: Cleanup PREEMPT_COUNT leftovers
> >       locking/bitspinlock: Cleanup PREEMPT_COUNT leftovers
> >       uaccess: Cleanup PREEMPT_COUNT leftovers
> >       sched: Cleanup PREEMPT_COUNT leftovers
> >       ARM: Cleanup PREEMPT_COUNT leftovers
> >       xtensa: Cleanup PREEMPT_COUNT leftovers
> >       drm/i915: Cleanup PREEMPT_COUNT leftovers
> >       rcutorture: Cleanup PREEMPT_COUNT leftovers
> >       preempt: Remove PREEMPT_COUNT from Kconfig
> > 
> > Uladzislau Rezki (Sony) (1):
> >       rcu/tree: Allocate a page when caller is preemptible
> > 
> > kernel test robot (1):
> >       kvfree_rcu(): Fix ifnullfree.cocci warnings
> 
> >  21 files changed, 44 insertions(+), 136 deletions(-)
> 
> Pulled into tip:core/rcu, thanks a lot guys!

Thank you, Ingo!!!

							Thanx, Paul