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From: "Paul E. McKenney" <paulmck@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: "Joel Fernandes (Google)" <joel@joelfernandes.org>,
	linux-kernel@vger.kernel.org, Andy Lutomirski <luto@kernel.org>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	frextrite@gmail.com, Ingo Molnar <mingo@redhat.com>,
	Josh Triplett <josh@joshtriplett.org>,
	kernel-team@android.com, Lai Jiangshan <jiangshanlai@gmail.com>,
	madhuparnabhowmik04@gmail.com,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	peterz@infradead.org, Petr Mladek <pmladek@suse.com>,
	rcu@vger.kernel.org, rostedt@goodmis.org,
	vpillai@digitalocean.com
Subject: Re: [PATCH v3 0/5] RCU dyntick nesting counter cleanups for rcu -dev
Date: Sun, 17 May 2020 09:15:31 -0700
Message-ID: <20200517161531.GR2869@paulmck-ThinkPad-P72> (raw)
In-Reply-To: <87wo5adfh8.fsf@nanos.tec.linutronix.de>

On Sun, May 17, 2020 at 12:26:43PM +0200, Thomas Gleixner wrote:
> Paul,
> 
> "Paul E. McKenney" <paulmck@kernel.org> writes:
> > And I have allegedly resolved the conflicts with Thomas's and Peter's
> > series, or at least the noinstr-rcu-nmi-2020-05-15 branch of that series.
> > At least one conflict was completely invisible to "git rebase" (but
> > fortunately blindingly obvious to the compiler).  This naturally makes
> > me suspect that additional adjustments might be needed.  Especially
> > given that misplaced instrumentation_begin() and instrumentation_end()
> > calls are invisible not only to the compiler, but also to rcutorture in
> > my setup.  (For example, tracing before instrumentation_begin() or after
> > instrumentation_end() is a bug.)
> 
> there is tooling to verify that. If you merge
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git entry-v7-full
> 
> into your dev branch (trivial conflict) and after building it, run:
> 
>  objtool check -fal $BUILDIR/vmlinux.o

The conflict was trivial, but for future reference, where should I be
getting the proper objtool from?

							Thanx, Paul

  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-04 12:05 Joel Fernandes (Google)
2020-05-04 12:05 ` [PATCH v3 1/5] Revert b8c17e6664c4 ("rcu: Maintain special bits at bottom of ->dynticks counter") Joel Fernandes (Google)
2020-05-04 12:05 ` [PATCH v3 2/5] rcu/tree: Add better tracing for dyntick-idle Joel Fernandes (Google)
2020-05-04 12:05 ` [PATCH v3 3/5] rcu/tree: Clean up dynticks counter usage Joel Fernandes (Google)
2020-05-04 12:05 ` [PATCH v3 4/5] rcu/tree: Remove dynticks_nmi_nesting counter Joel Fernandes (Google)
2020-05-04 12:05 ` [PATCH v3 5/5] trace: events: rcu: Change description of rcu_dyntick trace event Joel Fernandes (Google)
2020-05-04 17:15 ` [PATCH v3 0/5] RCU dyntick nesting counter cleanups for rcu -dev Paul E. McKenney
2020-05-04 17:37   ` Joel Fernandes
2020-05-04 17:44   ` Paul E. McKenney
2020-05-04 18:18     ` Joel Fernandes
2020-05-16 17:12     ` Paul E. McKenney
2020-05-17 10:26       ` Thomas Gleixner
2020-05-17 16:15         ` Paul E. McKenney [this message]
2020-05-17 19:06           ` Thomas Gleixner

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