From: Joel Fernandes <joel@joelfernandes.org>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Boqun Feng <boqun.feng@gmail.com>,
linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Nicholas Piggin <npiggin@gmail.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
"Paul E. McKenney" <paulmck@kernel.org>,
Will Deacon <will@kernel.org>,
Alan Stern <stern@rowland.harvard.edu>,
John Stultz <jstultz@google.com>,
Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>,
Frederic Weisbecker <frederic@kernel.org>,
Josh Triplett <josh@joshtriplett.org>,
Uladzislau Rezki <urezki@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
Lai Jiangshan <jiangshanlai@gmail.com>,
Zqiang <qiang.zhang1211@gmail.com>,
Ingo Molnar <mingo@redhat.com>, Waiman Long <longman@redhat.com>,
Mark Rutland <mark.rutland@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Vlastimil Babka <vbabka@suse.cz>,
maged.michael@gmail.com, Mateusz Guzik <mjguzik@gmail.com>,
Jonas Oberhauser <jonas.oberhauser@huaweicloud.com>,
rcu@vger.kernel.org, linux-mm@kvack.org, lkmm@lists.linux.dev,
Gary Guo <gary@garyguo.net>, Nikita Popov <github@npopov.com>,
llvm@lists.linux.dev
Subject: Re: [RFC PATCH v2 2/4] Documentation: RCU: Refer to ptr_eq()
Date: Fri, 4 Oct 2024 17:15:15 -0400 [thread overview]
Message-ID: <CAEXW_YQL3wY+BSMw3SOxDWbczrVfe9ALz8wqRjb9iPOBJq0xHQ@mail.gmail.com> (raw)
In-Reply-To: <20241004182734.1761555-3-mathieu.desnoyers@efficios.com>
On Fri, Oct 4, 2024 at 2:29 PM Mathieu Desnoyers
<mathieu.desnoyers@efficios.com> wrote:
>
> Refer to ptr_eq() in the rcu_dereference() documentation.
>
> ptr_eq() is a mechanism that preserves address dependencies when
> comparing pointers, and should be favored when comparing a pointer
> obtained from rcu_dereference() against another pointer.
>
> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
> Acked-by: Alan Stern <stern@rowland.harvard.edu>
> Acked-by: Paul E. McKenney <paulmck@kernel.org>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> Cc: "Paul E. McKenney" <paulmck@kernel.org>
> Cc: Will Deacon <will@kernel.org>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Boqun Feng <boqun.feng@gmail.com>
> Cc: Alan Stern <stern@rowland.harvard.edu>
> Cc: John Stultz <jstultz@google.com>
> Cc: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
> Cc: Linus Torvalds <torvalds@linux-foundation.org>
> Cc: Boqun Feng <boqun.feng@gmail.com>
> Cc: Frederic Weisbecker <frederic@kernel.org>
> Cc: Joel Fernandes <joel@joelfernandes.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
thanks,
- Joel
next prev parent reply other threads:[~2024-10-04 21:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20241004182734.1761555-1-mathieu.desnoyers@efficios.com>
2024-10-04 18:27 ` [RFC PATCH v2 1/4] compiler.h: Introduce ptr_eq() to preserve address dependency Mathieu Desnoyers
2024-10-04 18:27 ` [RFC PATCH v2 2/4] Documentation: RCU: Refer to ptr_eq() Mathieu Desnoyers
2024-10-04 21:15 ` Joel Fernandes [this message]
2024-10-06 19:52 ` David Laight
2024-10-06 20:39 ` Paul E. McKenney
2024-10-07 11:01 ` Sebastian Andrzej Siewior
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