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

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Message-ID: <20201009180302.GA22222@pc636>
Date:   Fri, 9 Oct 2020 20:03:02 +0200
From:   Uladzislau Rezki <urezki@...il.com>
To:     "Paul E. McKenney" <paulmck@...nel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Ingo Molnar <mingo@...nel.org>, 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 10:13:13AM -0700, Paul E. McKenney wrote:
> 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
Thank you!

--
Vlad Rezki