From: Alice Ryhl <aliceryhl@google.com>
To: Kunwu Chan <kunwu.chan@linux.dev>
Cc: ojeda@kernel.org, alex.gaynor@gmail.com, boqun.feng@gmail.com,
gary@garyguo.net, bjorn3_gh@protonmail.com,
benno.lossin@proton.me, a.hindborg@kernel.org,
tmgross@umich.edu, dakr@kernel.org, nathan@kernel.org,
nick.desaulniers+lkml@gmail.com, morbo@google.com,
justinstitt@google.com, rust-for-linux@vger.kernel.org,
linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
Kunwu Chan <kunwu.chan@hotmail.com>,
Grace Deng <Grace.Deng006@gmail.com>
Subject: Re: [PATCH v2] rust: sync: optimize Rust symbol generation for PollCondVar
Date: Thu, 20 Mar 2025 08:42:28 +0000 [thread overview]
Message-ID: <Z9vU9G9A0mneuqT0@google.com> (raw)
In-Reply-To: <20250317025205.2366518-1-kunwu.chan@linux.dev>
On Mon, Mar 17, 2025 at 10:52:05AM +0800, Kunwu Chan wrote:
> From: Kunwu Chan <kunwu.chan@hotmail.com>
>
> When build the kernel using the llvm-18.1.3-rust-1.85.0-x86_64
> with ARCH=arm64, the following symbols are generated:
>
> $nm vmlinux | grep ' _R'.*PollCondVar | rustfilt
> ... T <kernel::sync::poll::PollCondVar>::new::{closure#0}::{closure#0}::panic_cold_explicit
> ... T <kernel::sync::poll::PollCondVar as kernel::init::PinnedDrop>::drop
> ... T <kernel::sync::poll::PollCondVar as core::ops::drop::Drop>::drop
>
> This Rust symbol
> (<kernel::sync::poll::PollCondVar as kernel::init::PinnedDrop>::drop)
> is trivial wrappers around the C functions __wake_up_pollfree
> and synchronize_rcu. It doesn't make sense to go through a trivial
> wrapper for its functions,so mark it inline.
>
> Link: https://github.com/Rust-for-Linux/linux/issues/1145
> Suggested-by: Alice Ryhl <aliceryhl@google.com>
> Co-developed-by: Grace Deng <Grace.Deng006@Gmail.com>
> Signed-off-by: Grace Deng <Grace.Deng006@Gmail.com>
> Signed-off-by: Kunwu Chan <kunwu.chan@hotmail.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
next prev parent reply other threads:[~2025-03-20 8:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-17 2:52 [PATCH v2] rust: sync: optimize Rust symbol generation for PollCondVar Kunwu Chan
2025-03-17 10:23 ` Benno Lossin
2025-03-20 8:42 ` Alice Ryhl [this message]
2025-03-23 17:49 ` Boqun Feng
2025-03-24 2:13 ` Kunwu Chan
2025-07-03 8:36 ` [tip: sched/core] rust: sync: Mark PollCondVar::drop() inline tip-bot2 for Kunwu Chan
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=Z9vU9G9A0mneuqT0@google.com \
--to=aliceryhl@google.com \
--cc=Grace.Deng006@gmail.com \
--cc=a.hindborg@kernel.org \
--cc=alex.gaynor@gmail.com \
--cc=benno.lossin@proton.me \
--cc=bjorn3_gh@protonmail.com \
--cc=boqun.feng@gmail.com \
--cc=dakr@kernel.org \
--cc=gary@garyguo.net \
--cc=justinstitt@google.com \
--cc=kunwu.chan@hotmail.com \
--cc=kunwu.chan@linux.dev \
--cc=linux-kernel@vger.kernel.org \
--cc=llvm@lists.linux.dev \
--cc=morbo@google.com \
--cc=nathan@kernel.org \
--cc=nick.desaulniers+lkml@gmail.com \
--cc=ojeda@kernel.org \
--cc=rust-for-linux@vger.kernel.org \
--cc=tmgross@umich.edu \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.