linux-kernel - Re: [PATCH 1/7] rust: sync: add `Arc` for ref-counted allocations

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Message-ID: <Y73em8F0zNzUbUfg@hirez.programming.kicks-ass.net>
Date:   Tue, 10 Jan 2023 22:54:35 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Boqun Feng <boqun.feng@...il.com>
Cc:     Wedson Almeida Filho <wedsonaf@...il.com>,
        rust-for-linux@...r.kernel.org, Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        linux-kernel@...r.kernel.org, Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH 1/7] rust: sync: add `Arc` for ref-counted allocations

On Tue, Jan 10, 2023 at 01:36:25PM -0800, Boqun Feng wrote:
> On Tue, Jan 10, 2023 at 10:20:50PM +0100, Peter Zijlstra wrote:
> > On Tue, Jan 10, 2023 at 12:22:47PM -0800, Boqun Feng wrote:
> > 
> > > First, I'd really appreciate it that Will, Peter or Mark can take a look
> > > at the series and see if they are happy or not ;-)
> > 
> > I only have 1 patch, and since I don't speak rust I have very limited
> > feedback. Having to use out-of-line functions seems sub-optimal, but
> > I suppose that's a limitation of the Rust-C bindings.
> > 
> > Afaict this is like C++ shared_ptr<> and using refcount_t seems okay for
> > that, not sure what else you're asking.
> > 
> 
> Thanks! I failed to find that you were only Cc for the first patch.. I
> cannot speak for Wedson, but the rest of the patchset are all based on
> the first patch and purely in Rust, maybe he was avoiding to "spam" your
> inbox ;-)
> 
> While we are at it, for a general case, say we provide Rust's interface
> of task/kthread managament, do you prefer to seeing the whole patchset
> (including how Rust side provides the APIs) or seeing only the patch
> that interacts with C?
> 
> Again, trying to find the sweet spot for collaboration ;-)

Always all patches. The more effort I need to do to find sometihng the
smaller the chance I will. Also, I get so much email, I've long since
given up on reading it all.