From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 F32CE3BCD34; Sun, 26 Jul 2026 22:36:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785105384; cv=none; b=De9kwVkSSRph/z37fQT37sel2h62nItQzqU6KnFayKCteKUSPV+roGbCgOexw325tZcKsy9trt8hY47A0gnzKw7a8TQYlUYXjbWU6Kbt8m+dIRoCzUAbrKivQ57riNSA9EdBxu7Pe2qdZPYfWYPMtuOUwGBt7UVNtIrI5HLcxII= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785105384; c=relaxed/simple; bh=0ALCbkGr3kGr1fHmhYGJuj6v1+EingvT9DQ2AmbDGNk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=gE7UyDd57LZtc3KLKDZttVUu75GBAVkBnsLwT+1euvyMVp/SqqP6CqGBlAAEm9L2UqVmUZ9kYXZkqkS1STNri2mUWkuok8M0EVc6i2kyyf3NStzqTNOVlSEFQyOKPtsz8SVrvCa+0vTpk4ts8tjWENBKfJXq9I+ZPPfQyXA1ocQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Wo92l6TG; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Wo92l6TG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E421B1F000E9; Sun, 26 Jul 2026 22:36:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785105382; bh=8dgquFD3951LYM8Atd006F+Nn8DhxEOEH+D28iA6SBE=; h=From:To:Cc:Subject:Date; b=Wo92l6TGl7j0JSCCS/7rCFYVPf3Mv18ThbIQ029sioVw2nBO85XcOob3utFgAv7Oi WHWi67xd7VT4SnhQfZhNwoNgfMDXZScH6rO6HvWwDj7jWuGa5xZdAybj5fIlD55R2l CA4hxaqo9nz5BxiKgYQHb4RXrsMktSxXffKoXuxwOkwMiz+/EpUtyHRCw1o24ZcJG1 HtTwwc/OUSzV0PkSi/80tKeMl1hpjSyAt9BpO1GBnIPNiT9fwx0Tws+iEERjEKGqbS jn8oBmpTo7ovG5ZzS8LnNQftAHgtTXsMluWF/qw1GgFDkjc+dyf4BhUOKtYicDpb0R W31+SxMfH0Y/g== From: Danilo Krummrich To: gregkh@linuxfoundation.org, arve@android.com, tkjos@android.com, brauner@kernel.org, cmllamas@google.com, aliceryhl@google.com, boqun@kernel.org, gary@garyguo.net, lyude@redhat.com, daniel.almeida@collabora.com, work@onurozkan.dev, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, kprateek.nayak@amd.com, ojeda@kernel.org, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, tmgross@umich.edu, tamird@kernel.org, acourbot@nvidia.com, peterz@infradead.org, mingo@redhat.com, will@kernel.org, longman@redhat.com, viro@zeniv.linux.org.uk, jack@suse.cz, tj@kernel.org, jiangshanlai@gmail.com Cc: linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-fsdevel@vger.kernel.org, Danilo Krummrich Subject: [PATCH 0/5] rust: sync: add WaitQueue infrastructure Date: Mon, 27 Jul 2026 00:36:06 +0200 Message-ID: <20260726223613.1242940-1-dakr@kernel.org> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a WaitQueue abstraction wrapping struct wait_queue_head, providing wait_event()-style methods that take a condition closure directly. This is needed for a (subsequent) DRM patch series to wait for in-flight file close operations during driver unbind. The Tyr driver also needs it for "CSF firmware responses and other GPU-driven events" [1]. Convert CondVar (and PollCondVar) to use WaitQueue internally, removing duplicate code using WaitQueue as the base primitive. Also replace the deprecated system_wq wrapper with system_percpu_wq and system_dfl_wq to avoid introducing more callers generating warnings that would need to be converted later. [1] https://lore.kernel.org/dri-devel/20260721151423.444175-2-laura.nao@collabora.com/ Danilo Krummrich (5): rust: task: add safe schedule_timeout() wrapper rust: workqueue: replace deprecated system_wq with system_{percpu,dfl}_wq rust: sync: add WaitQueue infrastructure rust: sync: convert CondVar and PollCondVar to use WaitQueue rust: sync: condvar: use task::schedule_timeout() drivers/android/binder/process.rs | 4 +- rust/kernel/sync.rs | 6 + rust/kernel/sync/completion.rs | 2 +- rust/kernel/sync/condvar.rs | 104 +++----- rust/kernel/sync/lock/spinlock.rs | 2 +- rust/kernel/sync/poll.rs | 14 +- rust/kernel/sync/wait.rs | 385 ++++++++++++++++++++++++++++++ rust/kernel/task.rs | 13 + rust/kernel/workqueue.rs | 40 ++-- 9 files changed, 469 insertions(+), 101 deletions(-) create mode 100644 rust/kernel/sync/wait.rs base-commit: 6f6629ab2185d27cbc65d7d85908159b1293c082 -- 2.55.0