From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: Boqun Feng <boqun@kernel.org>
Cc: "Paul E . McKenney" <paulmck@kernel.org>,
linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Boqun Feng <boqun.feng@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Will Deacon <will@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Alan Stern <stern@rowland.harvard.edu>,
John Stultz <jstultz@google.com>,
Frederic Weisbecker <frederic@kernel.org>,
Joel Fernandes <joel@joelfernandes.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>,
Gary Guo <gary@garyguo.net>,
rcu@vger.kernel.org, linux-mm@kvack.org, lkmm@lists.linux.dev,
Nikita Popov <github@npopov.com>,
llvm@lists.linux.dev, Lian Wang <lianux.mm@gmail.com>,
Kunwu Chan <kunwu.chan@gmail.com>
Subject: Re: [PATCH hazptr v2 2/4] ptreq.h: Introduce ptr_eq() to preserve address dependency
Date: Fri, 9 Oct 2026 15:07:27 -0400 [thread overview]
Message-ID: <f3d74794-a9da-478b-a005-be842b87102e@efficios.com> (raw)
In-Reply-To: <ask6bmsDCCacOkKb@tardis.local>
On 2026-10-09 15:03, Boqun Feng wrote:
> On Fri, Oct 09, 2026 at 02:21:33PM -0400, Mathieu Desnoyers wrote:
[...]
>>
>> An architecture specific implementation of the pointer comparison
>> can be implemented by each architecture as asm/ptreq.h. The x86
>> implementation is provided initially. If no implementation header is
>> present for the architecture, an arch-agnostic fallback based on
>> OPTIMIZER_HIDE_VAR is included from asm-generic.
>>
[...]
>
> I prefer the name ptr_eq.h over ptreq.h :)
>
> With that name fix or there is a strong reason of ptreq.h:
>
> Reviewed-by: Boqun Feng <boqun@kernel.org>
I took rwonce.h (implementing READ_ONCE()/WRITE_ONCE()) as an
inspiration for the file name. I'm open to change it to whatever
people think best. I have no strong preference for either ptreq.h
or ptr_eq.h. I'll let people chime in before respinning an updated
series if a file name change is needed.
Thanks!
Mathieu
--
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com
next prev parent reply other threads:[~2026-10-09 19:07 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-09 18:21 [PATCH hazptr v2 0/4] Hazard pointer updates Mathieu Desnoyers
2026-10-09 18:21 ` [PATCH hazptr v2 1/4] hazptr: Fix two-phase hazptr_synchronize race with detach Mathieu Desnoyers
2026-10-09 18:21 ` [PATCH hazptr v2 2/4] ptreq.h: Introduce ptr_eq() to preserve address dependency Mathieu Desnoyers
2026-10-09 19:03 ` Boqun Feng
2026-10-09 19:07 ` Mathieu Desnoyers [this message]
2026-10-09 21:55 ` Gary Guo
2026-10-09 18:21 ` [PATCH hazptr v2 3/4] Documentation: RCU: Refer to ptr_eq() Mathieu Desnoyers
2026-10-09 18:21 ` [PATCH hazptr v2 4/4] hazptr: Introduce "try acquire" fast path, fallback to overflow list Mathieu Desnoyers
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