From: Marco Elver <elver@google.com>
To: David Laight <David.Laight@aculab.com>
Cc: "Peter Zijlstra" <peterz@infradead.org>,
"Wedson Almeida Filho" <wedsonaf@gmail.com>,
"Greg KH" <gregkh@linuxfoundation.org>,
"rust-for-linux@vger.kernel.org" <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>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"linux-kernel@vger.kernel.org" <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`
Date: Thu, 6 Apr 2023 13:21:28 +0200 [thread overview]
Message-ID: <CANpmjNPrREVGC3Az0T7k_2yr1PJp+E4yURUGUnu9Jb_CShJNHw@mail.gmail.com> (raw)
In-Reply-To: <f9573e45c6a14644abc6fcd4d3c98897@AcuMS.aculab.com>
On Thu, 6 Apr 2023 at 10:38, David Laight <David.Laight@aculab.com> wrote:
>
> From: Peter Zijlstra
> > Sent: 05 April 2023 21:50
> >
> > On Wed, Apr 05, 2023 at 05:40:39PM -0300, Wedson Almeida Filho wrote:
> ...
> > > So the situation is improved in that we don't need to manually write (and
> > > commit) the helpers. It may improve further in the future if we get better
> > > integration of the languages.
> >
> > But yeah, feel free to convert macros to inline functions where the
> > difference is moot. There is indeed no real reason for mutex_lock() to
> > not be an inline function in that case.
>
> mutex_lock() is probably ok.
> But there are cases where gcc generates much better code
> for #defines than for inline functions.
> Almost certainly because the front end gets to optimise
> #defines, but inlines are done much later on.
For macro to inline function conversions, the most conservative option
would be __always_inline. We've also seen things go wrong with
"inline" only paired with various kinds of instrumentation.
Can bindgen deal with "static __always_inline" functions?
next prev parent reply other threads:[~2023-04-06 11:22 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-05 17:50 [PATCH v2 01/13] rust: sync: introduce `LockClassKey` Wedson Almeida Filho
2023-04-05 17:51 ` [PATCH v2 02/13] rust: sync: introduce `Lock` and `Guard` Wedson Almeida Filho
2023-04-05 17:51 ` [PATCH v2 03/13] rust: lock: introduce `Mutex` Wedson Almeida Filho
2023-04-05 18:03 ` Greg KH
2023-04-05 18:04 ` Greg KH
2023-04-05 19:18 ` Peter Zijlstra
2023-04-05 20:21 ` Wedson Almeida Filho
2023-04-05 20:29 ` Peter Zijlstra
2023-04-05 20:40 ` Wedson Almeida Filho
2023-04-05 20:49 ` Peter Zijlstra
2023-04-06 8:38 ` David Laight
2023-04-06 11:21 ` Marco Elver [this message]
2023-04-06 16:25 ` Miguel Ojeda
2023-04-06 16:45 ` Miguel Ojeda
2023-04-05 17:51 ` [PATCH v2 04/13] locking/spinlock: introduce spin_lock_init_with_key Wedson Almeida Filho
2023-04-05 17:51 ` [PATCH v2 05/13] rust: lock: introduce `SpinLock` Wedson Almeida Filho
2023-04-05 17:51 ` [PATCH v2 06/13] rust: lock: add support for `Lock::lock_irqsave` Wedson Almeida Filho
2023-04-05 17:51 ` [PATCH v2 07/13] rust: lock: implement `IrqSaveBackend` for `SpinLock` Wedson Almeida Filho
2023-04-05 17:51 ` [PATCH v2 08/13] rust: introduce `ARef` Wedson Almeida Filho
2023-04-07 21:59 ` Benno Lossin
2023-04-08 4:28 ` Wedson Almeida Filho
2023-04-05 17:51 ` [PATCH v2 09/13] rust: add basic `Task` Wedson Almeida Filho
2023-04-05 17:51 ` [PATCH v2 10/13] rust: introduce `current` Wedson Almeida Filho
2023-04-07 22:36 ` Benno Lossin
2023-04-08 3:54 ` Wedson Almeida Filho
2023-04-05 17:51 ` [PATCH v2 11/13] rust: lock: add `Guard::do_unlocked` Wedson Almeida Filho
2023-04-05 17:51 ` [PATCH v2 12/13] rust: sync: introduce `CondVar` Wedson Almeida Filho
2023-04-05 17:51 ` [PATCH v2 13/13] rust: sync: introduce `LockedBy` Wedson Almeida Filho
2023-04-07 21:00 ` Benno Lossin
2023-04-08 4:11 ` Wedson Almeida Filho
2023-04-08 7:52 ` Benno Lossin
2023-04-05 18:00 ` [PATCH v2 01/13] rust: sync: introduce `LockClassKey` Greg KH
2023-04-05 20:05 ` Wedson Almeida Filho
2023-04-05 20:21 ` Gary Guo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CANpmjNPrREVGC3Az0T7k_2yr1PJp+E4yURUGUnu9Jb_CShJNHw@mail.gmail.com \
--to=elver@google.com \
--cc=David.Laight@aculab.com \
--cc=alex.gaynor@gmail.com \
--cc=bjorn3_gh@protonmail.com \
--cc=boqun.feng@gmail.com \
--cc=gary@garyguo.net \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=longman@redhat.com \
--cc=mingo@redhat.com \
--cc=ojeda@kernel.org \
--cc=peterz@infradead.org \
--cc=rust-for-linux@vger.kernel.org \
--cc=walmeida@microsoft.com \
--cc=wedsonaf@gmail.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).