From nobody Mon Dec 1 22:05:53 2025 Received: from forward100b.mail.yandex.net (forward100b.mail.yandex.net [178.154.239.147]) (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 BB09F849C; Mon, 1 Dec 2025 10:29:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.154.239.147 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764584961; cv=none; b=APhalVhcUUifcZ90P4w6sIlUApZMyCQmFtrTak/L/f3XCb9/IoCTpNnEbJd54A8Ig11mxQh7OGeso41hxyUmC9kURMecw/uaY00z5Qcnz8B3DOwUXjKLBme0+GXmdu1q1R+QlKwBpjxY4l2Mb7mEHCb9ElkdvR6EW/wqTCvX+PA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764584961; c=relaxed/simple; bh=WqB6JNPv3gJi9R8OfwklKcAej1KKOMnsaU+KWUmdE9E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=fbnoFCiUSTuLeKfDzVr8gMixnCezO5if7UJkTFtT9gp+50ukpDCAlW3ZLgGtgkgULWjYYWiqvBEN+gcH61eFNZ29uKF5zkcxqLb0p2sBt7WGE8I1UfcUIrGpWhYQ6lAUJjOKMgI6LGfDw+ueZZYvLyNupyEhxm/IgtDoGMq9eY8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=onurozkan.dev; spf=pass smtp.mailfrom=onurozkan.dev; dkim=pass (1024-bit key) header.d=onurozkan.dev header.i=@onurozkan.dev header.b=IxvtlwVw; arc=none smtp.client-ip=178.154.239.147 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=onurozkan.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=onurozkan.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=onurozkan.dev header.i=@onurozkan.dev header.b="IxvtlwVw" Received: from mail-nwsmtp-smtp-production-main-92.iva.yp-c.yandex.net (mail-nwsmtp-smtp-production-main-92.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:8a9a:0:640:e327:0]) by forward100b.mail.yandex.net (Yandex) with ESMTPS id 2F70B80CAC; Mon, 01 Dec 2025 13:29:10 +0300 (MSK) Received: by mail-nwsmtp-smtp-production-main-92.iva.yp-c.yandex.net (smtp/Yandex) with ESMTPSA id wSfJU4kLMiE0-IBiVCnpX; Mon, 01 Dec 2025 13:29:09 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=onurozkan.dev; s=mail; t=1764584949; bh=QrQ+327j2W3iit6ugo4sNV5cBkrdyg3asiiz3F9bmS8=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=IxvtlwVwfzXw2O+NIVXkYtMYKQ365MOK+hL+FGi9aRAl/umwV063SENXNM5RAmQqe u2ckQfMBlzrvGXN2W/UOfuAnPPBMD9RExWwmvUeI+FO25aYL1U10GyoKnYiKq/IMJI z4J5nlWbBN23YWVkTxsgX8Zw80KJLFgseww6RFdA= Authentication-Results: mail-nwsmtp-smtp-production-main-92.iva.yp-c.yandex.net; dkim=pass header.i=@onurozkan.dev From: =?UTF-8?q?Onur=20=C3=96zkan?= To: rust-for-linux@vger.kernel.org Cc: lossin@kernel.org, lyude@redhat.com, ojeda@kernel.org, alex.gaynor@gmail.com, boqun.feng@gmail.com, gary@garyguo.net, a.hindborg@kernel.org, aliceryhl@google.com, tmgross@umich.edu, dakr@kernel.org, peterz@infradead.org, mingo@redhat.com, will@kernel.org, longman@redhat.com, felipe_life@live.com, daniel@sedlak.dev, daniel.almeida@collabora.com, thomas.hellstrom@linux.intel.com, linux-kernel@vger.kernel.org, =?UTF-8?q?Onur=20=C3=96zkan?= Subject: [PATCH v8 1/6] rust: add C wrappers for ww_mutex inline functions Date: Mon, 1 Dec 2025 13:28:50 +0300 Message-ID: <20251201102855.4413-2-work@onurozkan.dev> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20251201102855.4413-1-work@onurozkan.dev> References: <20251201102855.4413-1-work@onurozkan.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Some of the kernel's `ww_mutex` functions are implemented as `static inline`, so they are inaccessible from Rust as bindgen can't generate code on them. This patch provides C function wrappers around these inline implementations, so bindgen can see them and generate the corresponding Rust code. Signed-off-by: Onur =C3=96zkan --- MAINTAINERS | 1 + rust/helpers/helpers.c | 1 + rust/helpers/ww_mutex.c | 39 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 41 insertions(+) create mode 100644 rust/helpers/ww_mutex.c diff --git a/MAINTAINERS b/MAINTAINERS index e8f06145fb54..bc6ea9cc1588 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14546,6 +14546,7 @@ F: kernel/locking/ F: lib/locking*.[ch] F: rust/helpers/mutex.c F: rust/helpers/spinlock.c +F: rust/helpers/ww_mutex.c F: rust/kernel/sync/lock.rs F: rust/kernel/sync/lock/ F: rust/kernel/sync/locked_by.rs diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c index 551da6c9b506..58cf14d74516 100644 --- a/rust/helpers/helpers.c +++ b/rust/helpers/helpers.c @@ -59,4 +59,5 @@ #include "vmalloc.c" #include "wait.c" #include "workqueue.c" +#include "ww_mutex.c" #include "xarray.c" diff --git a/rust/helpers/ww_mutex.c b/rust/helpers/ww_mutex.c new file mode 100644 index 000000000000..61a487653394 --- /dev/null +++ b/rust/helpers/ww_mutex.c @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include + +void rust_helper_ww_mutex_init(struct ww_mutex *lock, struct ww_class *ww_= class) +{ + ww_mutex_init(lock, ww_class); +} + +void rust_helper_ww_acquire_init(struct ww_acquire_ctx *ctx, struct ww_cla= ss *ww_class) +{ + ww_acquire_init(ctx, ww_class); +} + +void rust_helper_ww_acquire_done(struct ww_acquire_ctx *ctx) +{ + ww_acquire_done(ctx); +} + +void rust_helper_ww_acquire_fini(struct ww_acquire_ctx *ctx) +{ + ww_acquire_fini(ctx); +} + +void rust_helper_ww_mutex_lock_slow(struct ww_mutex *lock, struct ww_acqui= re_ctx *ctx) +{ + ww_mutex_lock_slow(lock, ctx); +} + +int rust_helper_ww_mutex_lock_slow_interruptible(struct ww_mutex *lock, st= ruct ww_acquire_ctx *ctx) +{ + return ww_mutex_lock_slow_interruptible(lock, ctx); +} + +bool rust_helper_ww_mutex_is_locked(struct ww_mutex *lock) +{ + return ww_mutex_is_locked(lock); +} + --=20 2.51.2