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Date:   Wed, 5 Apr 2023 21:18:26 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Greg KH <gregkh@linuxfoundation.org>
Cc:     Wedson Almeida Filho <wedsonaf@gmail.com>,
        rust-for-linux@vger.kernel.org, Miguel Ojeda <ojeda@kernel.org>,
        Alex Gaynor <alex.gaynor@gmail.com>,
        Boqun Feng <boqun.feng@gmail.com>, Gary Guo <gary@garyguo.net>,
        =?iso-8859-1?Q?Bj=F6rn?= Roy Baron <bjorn3_gh@protonmail.com>,
        linux-kernel@vger.kernel.org,
        Wedson Almeida Filho <walmeida@microsoft.com>,
        Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
        Waiman Long <longman@redhat.com>
Subject: Re: [PATCH v2 03/13] rust: lock: introduce `Mutex`
Message-ID: <20230405191826.GA365912@hirez.programming.kicks-ass.net>
References: <20230405175111.5974-1-wedsonaf@gmail.com>
 <20230405175111.5974-3-wedsonaf@gmail.com>
 <2023040554-promoter-chevron-10b2@gregkh>
 <2023040509-tamer-clinic-c14c@gregkh>
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On Wed, Apr 05, 2023 at 08:04:22PM +0200, Greg KH wrote:
> On Wed, Apr 05, 2023 at 08:03:11PM +0200, Greg KH wrote:
> > On Wed, Apr 05, 2023 at 02:51:01PM -0300, Wedson Almeida Filho wrote:
> > > +void rust_helper_mutex_lock(struct mutex *lock)
> > > +{
> > > +	mutex_lock(lock);
> > > +}
> > > +EXPORT_SYMBOL_GPL(rust_helper_mutex_lock);
> > > +
> > 
> > No need to ever unlock a mutex?
> 
> Oh nevermind, mutex_lock() is a macro, mutex_unlock() is not...

Yeah, so I despise all these stupid helpers... but I suppose it's the
best they could come up with to interface the languages :/

The only hope is that the thing can do cross-language LTO or something
to re-inline stuff.