From: Mitchell Levy <levymitchell0@gmail.com>
To: "Christoph Lameter (Ampere)" <cl@gentwo.org>
Cc: "Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Trevor Gross" <tmgross@umich.edu>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Dennis Zhou" <dennis@kernel.org>, "Tejun Heo" <tj@kernel.org>,
"Danilo Krummrich" <dakr@kernel.org>,
"Benno Lossin" <lossin@kernel.org>,
linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH 4/5] rust: percpu: Add pin-hole optimizations for numerics
Date: Thu, 26 Jun 2025 11:55:56 -0700 [thread overview]
Message-ID: <685d97bc.050a0220.3c0bff.7a70@mx.google.com> (raw)
In-Reply-To: <d938ed3a-cb00-0a71-2380-dac7d1a9e039@gentwo.org>
On Wed, Jun 25, 2025 at 10:23:42AM -0700, Christoph Lameter (Ampere) wrote:
> On Tue, 24 Jun 2025, Mitchell Levy wrote:
>
> > + concat!("add gs:[{off}], {val:", $reg, "}"),
>
> > + concat!("sub gs:[{off}], {val:", $reg, "}"),
>
> > + concat!("sub gs:[{off}], {val}"),
>
> Where are the other RMV instructions like this_cpu_xchg and
> this_cpu_cmpxchg, this_cpu_cmpxchg_double etc?
I wanted to stick with (what I saw as) the most basic operations for the
first submission. That said, I tried to design things such that adding
more operations should be straightforward. Happy to build on this
further for a v2 if folks are interested in that.
next prev parent reply other threads:[~2025-06-26 18:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-24 22:10 [PATCH 0/5] rust: Add Per-CPU Variable API Mitchell Levy
2025-06-24 22:10 ` [PATCH 1/5] rust: percpu: introduce a rust API for per-CPU variables Mitchell Levy
2025-06-26 14:05 ` kernel test robot
2025-06-24 22:10 ` [PATCH 2/5] rust: rust-analyzer: add lib to dirs searched for crates Mitchell Levy
2025-06-24 22:10 ` [PATCH 3/5] rust: percpu: add a rust per-CPU variable test Mitchell Levy
2025-06-24 22:10 ` [PATCH 4/5] rust: percpu: Add pin-hole optimizations for numerics Mitchell Levy
2025-06-25 17:21 ` Christoph Lameter (Ampere)
2025-06-26 18:50 ` Mitchell Levy
2025-06-25 17:23 ` Christoph Lameter (Ampere)
2025-06-26 18:55 ` Mitchell Levy [this message]
2025-06-24 22:10 ` [PATCH 5/5] rust: percpu: cache per-CPU pointers in the dynamic case Mitchell Levy
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