linux-kernel - Re: [GIT PULL] LOCKDEP and Rust locking changes for v6.15

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Message-ID: <Z8IHIYOnI-DMHlC8@boqun-archlinux>
Date: Fri, 28 Feb 2025 10:57:37 -0800
From: Boqun Feng <boqun.feng@...il.com>
To: Peter Zijlstra <peterz@...radead.org>, mingo@...hat.com
Cc: Will Deacon <will@...nel.org>, Waiman Long <longman@...hat.com>,
	linux-kernel@...r.kernel.org, Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>, Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>, rust-for-linux@...r.kernel.org
Subject: Re: [GIT PULL] LOCKDEP and Rust locking changes for v6.15

On Tue, Feb 25, 2025 at 08:12:03PM -0800, Boqun Feng wrote:
> Hi Peter & Ingo,
> 

Ping ;-)

Regards,
Boqun

> Please pull the changes of lockdep and Rust locking for v6.15 into tip.
> 
> The following changes since commit 337369f8ce9e20226402cf139c4f0d3ada7d1705:
> 
>   locking/mutex: Add MUTEX_WARN_ON() into fast path (2025-02-21 20:19:12 +0100)
> 
> are available in the Git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git tags/lockdep-for-tip.2025.02.25
> 
> for you to fetch changes up to 3b5b307cf84ca3a73abe797df31e0efe897411a9:
> 
>   rust: lockdep: Use Pin for all LockClassKey usages (2025-02-25 08:53:08 -0800)
> 
> 
> Regards,
> Boqun
> 
> ----------------------------------------------------------------
> Lockdep changes for v6.15:
> 
> - Fix kernel-doc for rtmutex.
> - Fix lock wait context check on softirq for PREEMPT_RT.
> - Disable KASAN for lockdep to improve debug kernel performance.
> 
> Miscellaneous locking changes for v6.15:
> 
> - Use wake_q for semaphore to avoid wake-up in lock critical sections.
> 
> Rust locking changes for v6.15:
> 
> - Fix the soundness issue around dynamically allocated lock class keys.
> - Add CondVar::wait_interruptible_freezable() to allow freezable waits.
> - Add Guard::lock_ref() to access the lock reference behind a lock
>   guard.
> 
> ----------------------------------------------------------------
> Alice Ryhl (2):
>       rust: sync: Add accessor for the lock behind a given guard
>       rust: sync: condvar: Add wait_interruptible_freezable()
> 
> Boqun Feng (1):
>       rust: sync: lock: Add an example for Guard::lock_ref()
> 
> Mitchell Levy (2):
>       rust: lockdep: Remove support for dynamically allocated LockClassKeys
>       rust: lockdep: Use Pin for all LockClassKey usages
> 
> Randy Dunlap (1):
>       locking/rtmutex: Use struct keyword in kernel-doc comment
> 
> Ryo Takakura (1):
>       lockdep: Fix wait context check on softirq for PREEMPT_RT
> 
> Waiman Long (5):
>       locking/semaphore: Use wake_q to wake up processes outside lock critical section
>       locking/lock_events: Add locking events for rtmutex slow paths
>       locking/lock_events: Add locking events for lockdep
>       locking/lockdep: Disable KASAN instrumentation of lockdep.c
>       locking/lockdep: Add kasan_check_byte() check in lock_acquire()
> 
>  include/linux/bottom_half.h       |  8 +++++
>  kernel/locking/Makefile           |  3 +-
>  kernel/locking/lock_events_list.h | 28 +++++++++++++++++
>  kernel/locking/lockdep.c          | 17 ++++++++++-
>  kernel/locking/rtmutex.c          | 29 ++++++++++++++----
>  kernel/locking/rtmutex_common.h   |  4 +--
>  kernel/locking/semaphore.c        | 13 +++++---
>  kernel/softirq.c                  | 12 ++++++++
>  rust/helpers/helpers.c            |  1 +
>  rust/helpers/sync.c               | 13 ++++++++
>  rust/kernel/sync.rs               | 63 ++++++++++++++++++++++++++++++++-------
>  rust/kernel/sync/condvar.rs       | 28 ++++++++++++++---
>  rust/kernel/sync/lock.rs          | 35 ++++++++++++++++++++--
>  rust/kernel/sync/lock/global.rs   |  5 ++--
>  rust/kernel/sync/poll.rs          |  2 +-
>  rust/kernel/task.rs               |  2 ++
>  rust/kernel/workqueue.rs          |  2 +-
>  17 files changed, 231 insertions(+), 34 deletions(-)
>  create mode 100644 rust/helpers/sync.c