From nobody Thu Sep 19 21:30:30 2024 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AAF39187334; Wed, 11 Sep 2024 22:55:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726095327; cv=none; b=Iue9R3EnyVNGZWTiSk7m4LfUEYEo0h6P3YXwSjUh65GIQwJfaeslUq6AVl5cvxClRGSv+UYoxb5n59CfrTSimwuwKmpL5ylOvzf0B1OZThqFyJKgG7XnWQDCg9jvvmNtQsEm5H13sL7RVsU4Et80Mrhz3AgNHFzWLYvBGxaZlDA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726095327; c=relaxed/simple; bh=6UhtPHghMdWoDtF9TGoHZC9u3Z5IdMcvwYnLuoTa2qc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nKpn3sNDJ62fLzIDbAFYd8MW4vN5Di1e3PLyLjLtt4lj948f4JK9dB9s5nQr4PF/4qbDSl8ZuOjH5f7P6NmEh1pvj3YIScATZ+bUr63Dbi06BNi2PFPUkLb/9Y0cxRkG5pfOKXD0w8vxK7tQiOMNzwmoXz0eHUGolZFCYof5vyc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RXwms/Q1; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RXwms/Q1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A98B6C4CED0; Wed, 11 Sep 2024 22:55:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1726095327; bh=6UhtPHghMdWoDtF9TGoHZC9u3Z5IdMcvwYnLuoTa2qc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RXwms/Q1IYeTrOVyS8N6rmwVkuedlR7RrzOdigur1Nqg3fVvLpdjdpt87ycrYgBak UL4Us49SUfm6lzmfl286zvwwQQ6+fZJvTwTCQOoT+Rmc98EoIWGzN9YVgQd9GRJQj7 PjiLKvK5hZ8yXT4bPvuwFG/9I7iyeWLqE5RN8Ij81osBIQ9csfmWVxmb5HyMvzjAvB Y+MhH4C9XSnTyz48Ul81QJ092J0832DhYYkhm29zar+vQO3eVBU9nHURmuXisch9zy bb4hNzvrwTD+0uwAH36Id9zHlpN3/ayuyyHlhEvLDHQogD8XYcVbHi96wwOaChS528 frujahViF8gvQ== From: Danilo Krummrich To: ojeda@kernel.org, alex.gaynor@gmail.com, wedsonaf@gmail.com, boqun.feng@gmail.com, gary@garyguo.net, bjorn3_gh@protonmail.com, benno.lossin@proton.me, a.hindborg@samsung.com, aliceryhl@google.com, akpm@linux-foundation.org Cc: daniel.almeida@collabora.com, faith.ekstrand@collabora.com, boris.brezillon@collabora.com, lina@asahilina.net, mcanal@igalia.com, zhiw@nvidia.com, cjia@nvidia.com, jhubbard@nvidia.com, airlied@redhat.com, ajanulgu@redhat.com, lyude@redhat.com, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-mm@kvack.org, Danilo Krummrich Subject: [PATCH v7 05/26] rust: alloc: add module `allocator_test` Date: Thu, 12 Sep 2024 00:52:41 +0200 Message-ID: <20240911225449.152928-6-dakr@kernel.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240911225449.152928-1-dakr@kernel.org> References: <20240911225449.152928-1-dakr@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" `Allocator`s, such as `Kmalloc`, will be used by e.g. `Box` and `Vec` in subsequent patches, and hence this dependency propagates throughout the whole kernel. Add the `allocator_test` module that provides an empty implementation for all `Allocator`s in the kernel, such that we don't break the `rusttest` make target in subsequent patches. Reviewed-by: Alice Ryhl Reviewed-by: Benno Lossin Reviewed-by: Gary Guo Signed-off-by: Danilo Krummrich --- rust/kernel/alloc.rs | 9 +++++++-- rust/kernel/alloc/allocator_test.rs | 19 +++++++++++++++++++ 2 files changed, 26 insertions(+), 2 deletions(-) create mode 100644 rust/kernel/alloc/allocator_test.rs diff --git a/rust/kernel/alloc.rs b/rust/kernel/alloc.rs index 535ed1527034..da025faf07f8 100644 --- a/rust/kernel/alloc.rs +++ b/rust/kernel/alloc.rs @@ -2,12 +2,17 @@ =20 //! Extensions to the [`alloc`] crate. =20 -#[cfg(not(test))] -#[cfg(not(testlib))] +#[cfg(not(any(test, testlib)))] pub mod allocator; pub mod box_ext; pub mod vec_ext; =20 +#[cfg(any(test, testlib))] +pub mod allocator_test; + +#[cfg(any(test, testlib))] +pub use self::allocator_test as allocator; + /// Indicates an allocation error. #[derive(Copy, Clone, PartialEq, Eq, Debug)] pub struct AllocError; diff --git a/rust/kernel/alloc/allocator_test.rs b/rust/kernel/alloc/alloca= tor_test.rs new file mode 100644 index 000000000000..4785efc474a7 --- /dev/null +++ b/rust/kernel/alloc/allocator_test.rs @@ -0,0 +1,19 @@ +// SPDX-License-Identifier: GPL-2.0 + +#![allow(missing_docs)] + +use super::{AllocError, Allocator, Flags}; +use core::alloc::Layout; +use core::ptr::NonNull; + +pub struct Kmalloc; + +unsafe impl Allocator for Kmalloc { + unsafe fn realloc( + _ptr: Option>, + _layout: Layout, + _flags: Flags, + ) -> Result, AllocError> { + panic!(); + } +} --=20 2.46.0