From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Miguel Ojeda <ojeda@kernel.org>
Cc: "Linus Torvalds" <torvalds@linux-foundation.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
"Wedson Almeida Filho" <wedsonaf@google.com>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Geoffrey Thomas" <geofft@ldpreload.com>,
"Finn Behrens" <me@kloenk.de>,
"Adam Bratschi-Kaye" <ark.email@gmail.com>,
"Michael Ellerman" <mpe@ellerman.id.au>,
"Sumera Priyadarsini" <sylphrenadin@gmail.com>,
"Sven Van Asbroeck" <thesven73@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Boris-Chengbiao Zhou" <bobo1239@web.de>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Fox Chen" <foxhlchen@gmail.com>,
"Dan Robertson" <daniel.robertson@starlab.io>,
"Viktor Garske" <viktor@v-gar.de>,
"Dariusz Sosnowski" <dsosnowski@dsosnowski.pl>,
"Léo Lanteri Thauvin" <leseulartichaut@gmail.com>,
"Niklas Mohrin" <dev@niklasmohrin.de>,
"Gioh Kim" <gurugio@gmail.com>, "Daniel Xu" <dxu@dxuuu.xyz>,
"Milan Landaverde" <milan@mdaverde.com>,
"Morgan Bartlett" <mjmouse9999@gmail.com>,
"Maciej Falkowski" <m.falkowski@samsung.com>,
"Jiapeng Chong" <jiapeng.chong@linux.alibaba.com>,
"Petr Mladek" <pmladek@suse.com>,
"Sergey Senozhatsky" <senozhatsky@chromium.org>,
"Steven Rostedt" <rostedt@goodmis.org>,
"John Ogness" <john.ogness@linutronix.de>
Subject: Re: [PATCH v4 10/20] rust: add `kernel` crate
Date: Mon, 14 Feb 2022 14:27:03 +0900 [thread overview]
Message-ID: <YgnoJ97y3I2hE8UJ@google.com> (raw)
In-Reply-To: <20220212130410.6901-11-ojeda@kernel.org>
On (22/02/12 14:03), Miguel Ojeda wrote:
[..]
> +unsafe impl GlobalAlloc for KernelAllocator {
> + unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
> + // `krealloc()` is used instead of `kmalloc()` because the latter is
> + // an inline function and cannot be bound to as a result.
> + unsafe { bindings::krealloc(ptr::null(), layout.size(), bindings::GFP_KERNEL) as *mut u8 }
[..]
> +impl<const ORDER: u32> Pages<ORDER> {
> + /// Allocates a new set of contiguous pages.
> + pub fn new() -> Result<Self> {
> + // TODO: Consider whether we want to allow callers to specify flags.
> + // SAFETY: This only allocates pages. We check that it succeeds in the next statement.
> + let pages = unsafe {
> + bindings::alloc_pages(
> + bindings::GFP_KERNEL | bindings::__GFP_ZERO | bindings::__GFP_HIGHMEM,
> + ORDER,
> + )
> + };
[..]
Is this flexible enough? Why not let user pass bindings::GFP_* bitmask,
just like what the underlying kernel API does.
next prev parent reply other threads:[~2022-02-14 5:27 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-12 13:03 [PATCH v4 00/20] Rust support Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 01/20] kallsyms: support "big" kernel symbols Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 02/20] kallsyms: increase maximum kernel symbol length to 512 Miguel Ojeda
2022-02-22 8:19 ` Petr Mladek
2022-02-22 12:45 ` Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 03/20] kallsyms: use the correct buffer size for symbols Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 04/20] rust: add C helpers Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 05/20] rust: add `compiler_builtins` crate Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 06/20] rust: add `alloc` crate Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 07/20] rust: add `build_error` crate Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 08/20] rust: add `macros` crate Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 09/20] rust: add `kernel` crate's `sync` module Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 10/20] rust: add `kernel` crate Miguel Ojeda
2022-02-14 5:27 ` Sergey Senozhatsky [this message]
2022-02-14 13:36 ` Miguel Ojeda
2022-02-22 9:06 ` Petr Mladek
2022-02-22 12:48 ` Miguel Ojeda
2022-02-24 12:39 ` Petr Mladek
2022-02-12 13:03 ` [PATCH v4 11/20] rust: export generated symbols Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 12/20] vsprintf: add new `%pA` format specifier Miguel Ojeda
2022-02-14 10:18 ` Andy Shevchenko
2022-02-14 10:52 ` Rasmus Villemoes
2022-02-14 11:36 ` David Laight
2022-02-14 14:04 ` Miguel Ojeda
2022-02-14 12:12 ` Miguel Ojeda
2022-02-22 9:29 ` Petr Mladek
2022-02-22 10:35 ` Rasmus Villemoes
2022-02-24 9:55 ` Petr Mladek
2022-02-14 12:27 ` Miguel Ojeda
2022-02-14 13:54 ` Andy Shevchenko
2022-02-14 14:56 ` Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 13/20] scripts: add `generate_rust_analyzer.py` Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 14/20] scripts: decode_stacktrace: demangle Rust symbols Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 15/20] docs: add Rust documentation Miguel Ojeda
2022-02-14 10:47 ` Akira Yokosawa
2022-02-14 12:44 ` Miguel Ojeda
2022-02-16 13:37 ` Akira Yokosawa
2022-02-16 14:02 ` Miguel Ojeda
2022-03-17 8:19 ` Miguel Ojeda
2022-03-17 14:50 ` Akira Yokosawa
2022-03-18 13:12 ` Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 16/20] Kbuild: add Rust support Miguel Ojeda
2022-02-12 14:16 ` Russell King (Oracle)
2022-02-12 15:47 ` Miguel Ojeda
2022-02-12 16:18 ` Russell King (Oracle)
2022-02-12 18:32 ` Miguel Ojeda
2022-02-12 18:27 ` John Paul Adrian Glaubitz
2022-02-12 18:57 ` Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 17/20] samples: add Rust examples Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 18/20] MAINTAINERS: Rust Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 19/20] [RFC] drivers: gpio: PrimeCell PL061 in Rust Miguel Ojeda
2022-02-12 13:03 ` [PATCH v4 20/20] [RFC] drivers: android: Binder IPC " Miguel Ojeda
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