From: Christian Schrefl <chrisi.schrefl@gmail.com>
To: "Panagiotis Foliadis" <pfoliadis@posteo.net>,
"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>,
"Benno Lossin" <benno.lossin@proton.me>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Trevor Gross" <tmgross@umich.edu>,
"Nathan Chancellor" <nathan@kernel.org>,
"Nick Desaulniers" <nick.desaulniers+lkml@gmail.com>,
"Bill Wendling" <morbo@google.com>,
"Justin Stitt" <justinstitt@google.com>
Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
llvm@lists.linux.dev
Subject: Re: [PATCH v2] rust: task: mark Task methods inline
Date: Thu, 13 Mar 2025 20:41:13 +0100 [thread overview]
Message-ID: <9a516b5f-8509-4643-9c54-26caadc42348@gmail.com> (raw)
In-Reply-To: <20250311-inline-c-wrappers-v2-1-72c99d35ff33@posteo.net>
On 11.03.25 4:05 PM, Panagiotis Foliadis wrote:
> When you build the kernel using the llvm-18.1.3-rust-1.85.0-x86_64
> toolchain provided by kernel.org, the following symbols are generated:
>
> $ nm vmlinux | grep ' _R'.*Task | rustfilt
> ffffffff817b2d30 T <kernel::task::Task>::get_pid_ns
> ffffffff817b2d50 T <kernel::task::Task>::tgid_nr_ns
> ffffffff817b2c90 T <kernel::task::Task>::current_pid_ns
> ffffffff817b2d00 T <kernel::task::Task>::signal_pending
> ffffffff817b2cc0 T <kernel::task::Task>::uid
> ffffffff817b2ce0 T <kernel::task::Task>::euid
> ffffffff817b2c70 T <kernel::task::Task>::current
> ffffffff817b2d70 T <kernel::task::Task>::wake_up
> ffffffff817b2db0 T <kernel::task::Task as kernel::types::AlwaysRefCounted>::dec_ref
> ffffffff817b2d90 T <kernel::task::Task as kernel::types::AlwaysRefCounted>::inc_ref
>
> These Rust symbols are trivial wrappers around the C functions
> get_pid_ns, task_tgid_nr_ns, task_active_pid_ns, signal_pending, uid,
> euid, get_current, wake_up, get_task_struct and put_task_struct.It
> doesn't make sense to go through a trivial wrapper for these
> functions, so mark them inline.
>
> After applying this patch, the above command will produce no output.
>
> Link: https://github.com/Rust-for-Linux/linux/issues/1145
> Signed-off-by: Panagiotis Foliadis <pfoliadis@posteo.net>
> ---
Reviewed-by: Christian Schrefl <chrisi.schrefl@gmail.com>
Cheers
Christian
next prev parent reply other threads:[~2025-03-13 19:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-11 15:05 [PATCH v2] rust: task: mark Task methods inline Panagiotis Foliadis
2025-03-11 16:33 ` Benno Lossin
2025-03-12 12:22 ` Charalampos Mitrodimas
2025-03-13 19:41 ` Christian Schrefl [this message]
2025-03-14 9:30 ` Alice Ryhl
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