From patchwork Sun Feb 2 12:20:48 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tamir Duberstein X-Patchwork-Id: 13956500 Received: from mail-qt1-f173.google.com (mail-qt1-f173.google.com [209.85.160.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AA64E1D89E9; Sun, 2 Feb 2025 12:21:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.173 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738498863; cv=none; b=qAF7tYBYvo614t6/MBs/sMux+xKiNDA5kmzaj8R3V1oFvIVguzG9vrYiAqvKGNpEZPYwNW/9XnOECTusXw8FnxrJx8LLlGPHChkM1wPfwpmHr1X7QhJ9cKr0wApmQJqA+q7SIVbL0+APtGsspN89dn4qOIznrpAsAnjKZdT82Eg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738498863; c=relaxed/simple; bh=qCcE6Lf9182GcqVtS03nhQWQylhDhRsVQZCokxIQw68=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=eEZg2WJl+MZaC2ZJxJbvOlKdxSC7Ih6rDSmA+QttF+Lwno/zflp3bh0j42tI6VAPyJEaSkIP2wNcNUr7N9L8/AWkA2E6IIjd1/HM6OLceE0WPfMWWGs6yik0rpqYCreZjQsKk5ih6372rT01zkek1OhaW5/HQKnScq8mLOYUBNU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=nlOenyeK; arc=none smtp.client-ip=209.85.160.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="nlOenyeK" Received: by mail-qt1-f173.google.com with SMTP id d75a77b69052e-467bc28277eso29994201cf.1; Sun, 02 Feb 2025 04:21:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1738498860; x=1739103660; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=j4JU7/btSDeoFoLH5evt7g0RxbhFmC5zD2zX4QG/3vc=; b=nlOenyeKOkaayCAs7V4Tsvi9JscYzkRbwdx5SV2jJTGOYq3Z1rBmoRsyfNR5RFIpkE YQRTPXVn0u4KCQp4WTyAONAIbwDoqctCwxU2pWOoNDxdB1SHNKFCnij0v90YCXASfwD+ v9b5ikB98T+HNBwczsYbdCjSxdhc4lYPrXthCdGWtHmwO7c+dr6uUHIZdRN9bZPVV3+C 486X4fxJ655l9wkxlWf8vLvczKPlx6xiOz0MKHKZzrbo/yfReqMLqx/kxDBoW5C7BeJV DYPSaI1orQHc6uDUENfm5G+3C2WKPZkFqQzzT2+7fx5vKTiIub7G0b+EPDsF6DrWaEx8 aK9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1738498860; x=1739103660; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=j4JU7/btSDeoFoLH5evt7g0RxbhFmC5zD2zX4QG/3vc=; b=If1r1whDplo1CQtdGQ+m+GnFVOT8Lcj4nSxyw3FZEsRwr3Q44AoPybpbz2+3RIS/fC ZBZVakBHd9YndSiyfR7P0Jls5WQS2MbNCbH6UE57blz6LZbU/hXMkVBmdliZo0I63e8H Ay8e2CgMAQvZvtpkBuzMn4r0m6nAl7Wt/6oTd6rSgD5RiAF0xBerwapHLEdJ3B+rYPYY bOXMb+ihxzJlyMUK/aWbYRk9TKH9lhT7h+zT7SPkrDfE1+QOJJvpt8TZ30r5+vXR6JY9 OW79yDTD8sT8pmRGdYyf5V8mDWZ+lzpcOLEsh+CMlx9/qTMHC+vGgrbRuC59GQyHeSbg BpJg== X-Forwarded-Encrypted: i=1; AJvYcCVBPFXSX9TE8s1f2MlxwUWgPdDcpavbG8ChOfLqoxvwMBbLKT4RMjSJDbjFxfuLkW0V25eYml50gT3cxKU=@vger.kernel.org X-Gm-Message-State: AOJu0YyGAlKE9UR+4HNlCzlQWBQBQy9bZzNxx5O8DVZxyc8nItdnqCeS kPuiZq6FCgtrm7AxHy7p6rXHXQJNhHmyiZHHK4ucIWPma4ZbxCEz X-Gm-Gg: ASbGncuMD/gV8T9NzmbmxqMSz12xFREpIGYSSWpPKa7wB8aoofc3eEiqWqch0f+zP9y rOl8F/cYkc8aI2Dmw0J8Y5f2koUpWBsZ7MOCUEvCFrHqvVTfm7l+BU/lSzoa/O+6n58KkbxcIgT +t2V2hFeP2qTfEBddZvZX1zq9oWWTzJzgFOezIqbQ6BhDbTr/LNSRRNW/PgKjTT5jw56RvZQPmV 2cct7O6qeTIruOaYdsYiF4ro23Ath9xEq+r2tyVJ8zMa78gukTHBNAU8klot1xxWgERQOTwe9MR e+9/1Qu4kZGjy0w8ULD8h1MVX/qJ/2/9G8WPtFw= X-Google-Smtp-Source: AGHT+IFajMRbR9qD9CM+8VgxakOzVQP/SNgr/FMkCbdBjK0L3k64Fq+wUS2wTQbOjsWG3gowLjAJow== X-Received: by 2002:a05:622a:551b:b0:466:ac58:df71 with SMTP id d75a77b69052e-46fd0a817d4mr228441491cf.7.1738498860344; Sun, 02 Feb 2025 04:21:00 -0800 (PST) Received: from tamird-mac.local ([2600:4041:5be7:7c00:f07f:fb14:288d:6f1e]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-46fdf1728efsm37700331cf.62.2025.02.02.04.20.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 02 Feb 2025 04:20:59 -0800 (PST) From: Tamir Duberstein Date: Sun, 02 Feb 2025 07:20:48 -0500 Subject: [PATCH v6 3/4] rust: replace `kernel::c_str!` with C-Strings Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250202-cstr-core-v6-3-8469cd6d29fd@gmail.com> References: <20250202-cstr-core-v6-0-8469cd6d29fd@gmail.com> In-Reply-To: <20250202-cstr-core-v6-0-8469cd6d29fd@gmail.com> To: Michal Rostecki , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Tamir Duberstein X-Mailer: b4 0.15-dev C-String literals were added in Rust 1.77. Replace instances of `kernel::c_str!` with C-String literals where possible and rename `kernel::c_str!` to `c_str_avoid_literals` to clarify its intended use. Closes: https://github.com/Rust-for-Linux/linux/issues/1075 Signed-off-by: Tamir Duberstein --- drivers/net/phy/ax88796b_rust.rs | 7 +++---- drivers/net/phy/qt2025.rs | 5 ++--- rust/kernel/firmware.rs | 4 ++-- rust/kernel/kunit.rs | 7 ++++--- rust/kernel/net/phy.rs | 6 ++---- rust/kernel/str.rs | 37 ++++++++++++++++++++++++------------- rust/kernel/sync.rs | 4 ++-- rust/kernel/sync/lock/global.rs | 3 ++- 8 files changed, 41 insertions(+), 32 deletions(-) diff --git a/drivers/net/phy/ax88796b_rust.rs b/drivers/net/phy/ax88796b_rust.rs index 8c7eb009d9fc..b07d36f45a43 100644 --- a/drivers/net/phy/ax88796b_rust.rs +++ b/drivers/net/phy/ax88796b_rust.rs @@ -5,7 +5,6 @@ //! //! C version of this driver: [`drivers/net/phy/ax88796b.c`](./ax88796b.c) use kernel::{ - c_str, net::phy::{self, reg::C22, DeviceId, Driver}, prelude::*, uapi, @@ -41,7 +40,7 @@ fn asix_soft_reset(dev: &mut phy::Device) -> Result { #[vtable] impl Driver for PhyAX88772A { const FLAGS: u32 = phy::flags::IS_INTERNAL; - const NAME: &'static CStr = c_str!("Asix Electronics AX88772A"); + const NAME: &'static CStr = c"Asix Electronics AX88772A"; const PHY_DEVICE_ID: DeviceId = DeviceId::new_with_exact_mask(0x003b1861); // AX88772A is not working properly with some old switches (NETGEAR EN 108TP): @@ -105,7 +104,7 @@ fn link_change_notify(dev: &mut phy::Device) { #[vtable] impl Driver for PhyAX88772C { const FLAGS: u32 = phy::flags::IS_INTERNAL; - const NAME: &'static CStr = c_str!("Asix Electronics AX88772C"); + const NAME: &'static CStr = c"Asix Electronics AX88772C"; const PHY_DEVICE_ID: DeviceId = DeviceId::new_with_exact_mask(0x003b1881); fn suspend(dev: &mut phy::Device) -> Result { @@ -125,7 +124,7 @@ fn soft_reset(dev: &mut phy::Device) -> Result { #[vtable] impl Driver for PhyAX88796B { - const NAME: &'static CStr = c_str!("Asix Electronics AX88796B"); + const NAME: &'static CStr = c"Asix Electronics AX88796B"; const PHY_DEVICE_ID: DeviceId = DeviceId::new_with_model_mask(0x003b1841); fn soft_reset(dev: &mut phy::Device) -> Result { diff --git a/drivers/net/phy/qt2025.rs b/drivers/net/phy/qt2025.rs index 1ab065798175..2f4ba85a0d73 100644 --- a/drivers/net/phy/qt2025.rs +++ b/drivers/net/phy/qt2025.rs @@ -9,7 +9,6 @@ //! //! The QT2025 PHY integrates an Intel 8051 micro-controller. -use kernel::c_str; use kernel::error::code; use kernel::firmware::Firmware; use kernel::net::phy::{ @@ -36,7 +35,7 @@ #[vtable] impl Driver for PhyQT2025 { - const NAME: &'static CStr = c_str!("QT2025 10Gpbs SFP+"); + const NAME: &'static CStr = c"QT2025 10Gpbs SFP+"; const PHY_DEVICE_ID: phy::DeviceId = phy::DeviceId::new_with_exact_mask(0x0043a400); fn probe(dev: &mut phy::Device) -> Result<()> { @@ -69,7 +68,7 @@ fn probe(dev: &mut phy::Device) -> Result<()> { // The micro-controller will start running from the boot ROM. dev.write(C45::new(Mmd::PCS, 0xe854), 0x00c0)?; - let fw = Firmware::request(c_str!("qt2025-2.0.3.3.fw"), dev.as_ref())?; + let fw = Firmware::request(c"qt2025-2.0.3.3.fw", dev.as_ref())?; if fw.data().len() > SZ_16K + SZ_8K { return Err(code::EFBIG); } diff --git a/rust/kernel/firmware.rs b/rust/kernel/firmware.rs index e75db4d825ce..93e375e75ca0 100644 --- a/rust/kernel/firmware.rs +++ b/rust/kernel/firmware.rs @@ -40,13 +40,13 @@ fn request_nowarn() -> Self { /// # Examples /// /// ```no_run -/// # use kernel::{c_str, device::Device, firmware::Firmware}; +/// # use kernel::{device::Device, firmware::Firmware}; /// /// # fn no_run() -> Result<(), Error> { /// # // SAFETY: *NOT* safe, just for the example to get an `ARef` instance /// # let dev = unsafe { Device::get_device(core::ptr::null_mut()) }; /// -/// let fw = Firmware::request(c_str!("path/to/firmware.bin"), &dev)?; +/// let fw = Firmware::request(c"path/to/firmware.bin", &dev)?; /// let blob = fw.data(); /// /// # Ok(()) diff --git a/rust/kernel/kunit.rs b/rust/kernel/kunit.rs index 9f40ea744fc2..3d812edec057 100644 --- a/rust/kernel/kunit.rs +++ b/rust/kernel/kunit.rs @@ -56,10 +56,11 @@ macro_rules! kunit_assert { break 'out; } - static NAME: &'static $crate::str::CStr = $crate::c_str!($name); - static FILE: &'static $crate::str::CStr = $crate::c_str!($file); + static NAME: &'static $crate::str::CStr = $crate::c_str_avoid_literals!($name); + static FILE: &'static $crate::str::CStr = $crate::c_str_avoid_literals!($file); static LINE: i32 = core::line!() as i32 - $diff; - static CONDITION: &'static $crate::str::CStr = $crate::c_str!(stringify!($condition)); + static CONDITION: &'static $crate::str::CStr = + $crate::c_str_avoid_literals!(stringify!($condition)); // SAFETY: FFI call without safety requirements. let kunit_test = unsafe { $crate::bindings::kunit_get_current_test() }; diff --git a/rust/kernel/net/phy.rs b/rust/kernel/net/phy.rs index 9e410de3c3a3..5fb9b0e1c9b1 100644 --- a/rust/kernel/net/phy.rs +++ b/rust/kernel/net/phy.rs @@ -780,7 +780,6 @@ const fn as_int(&self) -> u32 { /// /// ``` /// # mod module_phy_driver_sample { -/// use kernel::c_str; /// use kernel::net::phy::{self, DeviceId}; /// use kernel::prelude::*; /// @@ -799,7 +798,7 @@ const fn as_int(&self) -> u32 { /// /// #[vtable] /// impl phy::Driver for PhySample { -/// const NAME: &'static CStr = c_str!("PhySample"); +/// const NAME: &'static CStr = c"PhySample"; /// const PHY_DEVICE_ID: phy::DeviceId = phy::DeviceId::new_with_exact_mask(0x00000001); /// } /// # } @@ -808,7 +807,6 @@ const fn as_int(&self) -> u32 { /// This expands to the following code: /// /// ```ignore -/// use kernel::c_str; /// use kernel::net::phy::{self, DeviceId}; /// use kernel::prelude::*; /// @@ -828,7 +826,7 @@ const fn as_int(&self) -> u32 { /// /// #[vtable] /// impl phy::Driver for PhySample { -/// const NAME: &'static CStr = c_str!("PhySample"); +/// const NAME: &'static CStr = c"PhySample"; /// const PHY_DEVICE_ID: phy::DeviceId = phy::DeviceId::new_with_exact_mask(0x00000001); /// } /// diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs index 2b63cfaaa981..20d852aa8b3c 100644 --- a/rust/kernel/str.rs +++ b/rust/kernel/str.rs @@ -190,14 +190,13 @@ pub trait CStrExt { /// # Examples /// /// ``` - /// # use kernel::c_str; /// # use kernel::fmt; /// # use kernel::str::CString; - /// let penguin = c_str!("