linux/rust/helpers
Linus Torvalds dfa35434d7 Locking updates for v7.3:
Futexes:
 
  - Use runtime constants for futex_hash computation
    (K Prateek Nayak, Peter Zijlstra)
 
  - Optimise the size check get_futex_key() (Sebastian Andrzej Siewior)
 
  - Avoid private hash use-after-free on final put (Felix Hoffmann)
 
  - Tell kmemleak we're not leaking __futex_queues (Peter Zijlstra)
 
 Rust integration updates:
 
  - Implement refcounted interrupt disable and SpinLockIrq for Rust
    (Boqun Feng, Heiko Carstens, Joel Fernandes, Lyude Paul)
 
  - Rust sync: add helpers for mb, dma_mb and friends;
    add generic memory barriers and use LKMM atomics
    instead of Rust atomics in the revocable code (Gary Guo)
 
  - Add abstraction and integrate synchronize_rcu() (Philipp Stanner)
 
 Lock debugging:
 
  - Add qspinlock contended_release tracepoint
    (Dmitry Ilvokhin, Peter Zijlstra)
 
  - Enable the printing of held locks of remote running tasks and print
    task CPU (Ingo Molnar)
 
  - percpu-rwsem: Annotate intentional data race in readers_active_check()
    (Sun Shaojie)
 
 Misc fixes and updates by Boqun Feng, Peter Zijlstra, Fangrui Song,
 Naveen Kumar Chaudhary and Thomas Huth.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmqC2KMRHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1gNwg//awvTQONfhPanAyTgl7CLDSlMSHdqmlyh
 Ue0/Q8Ef1Cy4jwXY2FE2A0b1VcM6cGpDPoryVdg/wMdUXRNwinzAEXmxIkRy9kve
 4LybrZwDShgLxJ7pJ6KKhgjgDiat8EdYmOwCBEE3LnP7AYhkAb8BFetA3YZJvzPa
 KfA2BRYCgvBTid6yOAuXWm55Ev92AczOBamBzTxCadcaDGtNGXtQO6LfnqiQDOav
 X5tVoANBeaQtSs1+LxE41WdNOiRoBuy0IFFvXtZRal6PZYuGGmZ5tbQvscD099em
 haVwQyzDHQrqzglv71M0KRTXvYzdGveMRg/Au1SQnuLO3V6Vd5rMQ1g7I2M9Ln0f
 Pg+tlRvQ77mLoqcgrtl0W/u0fRR4eDkiJ1pmG+98oniPwau23RdbFhC0vKFz3ikF
 WHMgk3/9TcULylgF1Tj6QLmNrBY3Vx8LBdsFjhflEw7bG4cW42D91npmXIiEDE6K
 tJc9CcaVdyE75o59z2Dtjj+qQVBlNPlfKQFXFL7p3jU/gFw2SzYuqon66X3kGmr0
 mKJ9UNJdkLdiCjxS/QiMcDeYhwJksJqxFBkH50z3Kzmo84JsSpUFkoa6GM4aSiGn
 HEwgC0Q7oOXVNIKUBYk5QaRW0HSk55hbsX2TWkvpeBYkE1zXshVZCCmgpaTSJgb5
 oFmiwrGfUjo=
 =slqC
 -----END PGP SIGNATURE-----

Merge tag 'locking-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:
 "Futexes:

   - Use runtime constants for futex_hash computation (K Prateek Nayak,
     Peter Zijlstra)

   - Optimise the size check get_futex_key() (Sebastian Andrzej Siewior)

   - Avoid private hash use-after-free on final put (Felix Hoffmann)

   - Tell kmemleak we're not leaking __futex_queues (Peter Zijlstra)

  Rust integration updates:

   - Implement refcounted interrupt disable and SpinLockIrq for Rust
     (Boqun Feng, Heiko Carstens, Joel Fernandes, Lyude Paul)

   - Rust sync: add helpers for mb, dma_mb and friends; add generic
     memory barriers and use LKMM atomics instead of Rust atomics in the
     revocable code (Gary Guo)

   - Add abstraction and integrate synchronize_rcu() (Philipp Stanner)

  Lock debugging:

   - Add qspinlock contended_release tracepoint (Dmitry Ilvokhin, Peter
     Zijlstra)

   - Enable the printing of held locks of remote running tasks and print
     task CPU (Ingo Molnar)

   - percpu-rwsem: Annotate intentional data race in readers_active_check()
     (Sun Shaojie)

  Misc fixes and updates by Boqun Feng, Peter Zijlstra, Fangrui Song,
  Naveen Kumar Chaudhary and Thomas Huth"

* tag 'locking-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
  rust: sync: Introduce SpinLockIrq::lock_with() and friends
  rust: sync: Add SpinLockIrq
  rust: sync: Use super::* in spinlock.rs
  rust: helper: Add spin_{un,}lock_irq_{enable,disable}() helpers
  rust: Introduce interrupt module
  s390/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS
  arm64: sched/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS
  preempt: Introduce HAS_SEPARATE_PREEMPT_RESCHED_BITS
  sched: Avoid signed comparison of preempt_count() in __cant_migrate()
  sched: Remove the unused preempt_offset parameter of __cant_sleep()
  locking: Switch to _irq_{disable,enable}() variants in cleanup guards
  irq: Add KUnit test for refcounted interrupt enable/disable
  irq,spin_lock: Add counted interrupt disabling/enabling
  openrisc: Include <linux/cpumask.h> in smp.h
  preempt: Introduce __preempt_count_{sub,add}_return()
  preempt: Introduce HARDIRQ_DISABLE_BITS
  preempt: Track NMI nesting to separate per-CPU counter
  futex: Tell kmemleak we're not leaking __futex_queues
  x86/paravirt: Trace contended_release on unlock
  tracing/lock: Use TRACE_EVENT_FN() for contended_release
  ...
History 2026-08-18 13:07:17 -07:00
..
acpi.c rust: ACPI: fix missing match data for PRP0001 2026-04-28 20:28:28 +02:00
atomic.c rust: helpers: Move #define __rust_helper out of atomic.c 2026-01-09 19:01:42 +08:00
atomic_ext.c rust: sync: atomic: Add Atomic<*{mut,const} T> support 2026-03-08 11:06:49 +01:00
auxiliary.c rust: auxiliary: add __rust_helper to helpers 2025-12-15 22:19:53 +01:00
barrier.c rust: sync: Add helpers for mb, dma_mb and friends 2026-08-04 05:52:54 -07:00
binder.c rust: binder: add __rust_helper to helpers 2025-12-29 12:10:47 +01:00
bitmap.c rust: bitmap: add __rust_helper to helpers 2026-01-06 12:14:10 -05:00
bitops.c bitmap updates for v6.20 2026-02-10 11:39:45 -08:00
blk.c rust: blk: Add __rust_helper to helpers 2026-01-09 19:01:41 +08:00
bug.c rust: bug: add __rust_helper to helpers 2026-01-26 03:48:25 +01:00
build_assert.c rust: kbuild: split up helpers.c 2024-08-18 23:34:26 +02:00
build_bug.c rust: err: add __rust_helper to helpers 2026-01-26 03:49:04 +01:00
clk.c rust: clk: add __rust_helper to helpers 2026-03-10 11:29:00 +01:00
completion.c rust: completion: Add __rust_helper to helpers 2026-01-09 19:01:41 +08:00
cpu.c rust: cpu: Add __rust_helper to helpers 2026-01-09 19:01:41 +08:00
cpufreq.c rust: cpufreq: add __rust_helper to helpers 2026-01-27 11:21:22 +05:30
cpumask.c rust: cpumask: add __rust_helper to helpers 2026-01-06 12:14:10 -05:00
cred.c rust: cred: add __rust_helper to helpers 2026-01-06 20:30:09 -05:00
device.c rust: device: add device name method 2026-03-24 23:51:23 +01:00
dma-resv.c rust: helpers: Add bindings/wrappers for dma_resv_lock 2026-03-27 20:46:56 +01:00
dma.c rust: dma: add missing __rust_helper annotations 2026-02-06 20:19:09 +01:00
drm.c rust: drm: gem: shmem: Add DRM shmem helper abstraction 2026-03-27 21:38:40 +01:00
drm_gpuvm.c drm/gpuvm: rust: add RUST_DRM_GPUVM option to Kconfig 2026-05-05 12:59:41 +02:00
err.c rust: err: add __rust_helper to helpers 2026-01-26 03:49:04 +01:00
fs.c rust: fs: add __rust_helper to helpers 2025-12-15 14:13:03 +01:00
gpu.c rust: gpu: Add GPU buddy allocator bindings 2026-03-23 21:41:47 +01:00
helpers.c Locking updates for v7.3: 2026-08-18 13:07:17 -07:00
interrupt.c rust: Introduce interrupt module 2026-08-10 12:53:09 +02:00
io.c rust: io: gate ioremap/iounmap on CONFIG_HAS_IOMEM 2026-08-06 16:05:50 +02:00
irq.c rust: irq: add __rust_helper to helpers 2025-12-15 22:26:10 +01:00
jump_label.c rust: jump_label: add __rust_helper to helpers 2026-03-10 11:29:16 +01:00
kunit.c rust: kunit: add __rust_helper to helpers 2026-01-05 15:32:03 -07:00
list.c rust: interop: Add list module for C linked list interface 2026-03-23 20:29:28 +01:00
maple_tree.c rust: maple_tree: add __rust_helper to helpers 2026-01-26 03:49:09 +01:00
mm.c rust: mm: add __rust_helper to helpers 2026-01-26 03:49:56 +01:00
mutex.c rust: sync: Add __rust_helper to helpers 2026-01-09 19:01:42 +08:00
of.c rust: of: add __rust_helper to helpers 2026-01-26 03:50:21 +01:00
page.c rust: mm: add __rust_helper to helpers 2026-01-26 03:49:56 +01:00
pci.c rust: pci: add __rust_helper to helpers 2025-12-15 22:39:11 +01:00
pid_namespace.c rust: pid_namespace: add __rust_helper to helpers 2025-12-15 14:13:03 +01:00
platform.c rust: platform: add __rust_helper to helpers 2025-12-15 22:39:42 +01:00
poll.c rust: poll: add __rust_helper to helpers 2025-12-15 14:13:04 +01:00
processor.c rust: processor: Add __rust_helper to helpers 2026-01-09 19:01:41 +08:00
property.c rust: property: add __rust_helper to helpers 2025-12-15 22:39:42 +01:00
pwm.c rust: pwm: Add __rust_helper to helpers 2026-01-20 18:52:43 +01:00
rbtree.c rust: rbtree: add __rust_helper to helpers 2026-01-26 03:50:41 +01:00
rcu.c rust: rcu: Add __rust_helper to helpers 2026-01-09 19:01:42 +08:00
refcount.c rust: refcount: Add __rust_helper to helpers 2026-01-09 19:01:42 +08:00
regulator.c rust: regulator: add __rust_helper to helpers 2025-12-14 19:37:55 +09:00
scatterlist.c rust: scatterlist: add __rust_helper to helpers 2025-12-15 22:39:42 +01:00
security.c rust: security: add __rust_helper to helpers 2026-01-06 20:30:09 -05:00
signal.c rust: task: Add __rust_helper to helpers 2026-01-09 19:01:42 +08:00
slab.c rust: slab: add __rust_helper to helpers 2026-01-26 03:50:50 +01:00
spinlock.c rust: helper: Add spin_{un,}lock_irq_{enable,disable}() helpers 2026-08-10 12:53:10 +02:00
string.c rust: helpers: Add memchr wrapper for string operations 2026-06-10 16:25:13 +02:00
sync.c rust: Introduce interrupt module 2026-08-10 12:53:09 +02:00
task.c rust: task: Add __rust_helper to helpers 2026-01-09 19:01:42 +08:00
time.c rust: time: Add __rust_helper to helpers 2026-01-09 19:01:42 +08:00
uaccess.c uaccess: unify inline vs outline copy_{from,to}_user() selection 2026-05-28 21:24:44 -07:00
usb.c rust: usb: add __rust_helper to helpers 2026-01-07 16:12:15 +01:00
vmalloc.c rust: helpers: add is_vmalloc_addr wrapper for NOMMU builds 2026-05-27 20:01:04 +02:00
wait.c rust: wait: Add __rust_helper to helpers 2026-01-09 19:01:42 +08:00
workqueue.c rust: workqueue: add __rust_helper to helpers 2026-01-26 03:51:31 +01:00
xarray.c rust: xarray: add __rust_helper to helpers 2026-01-15 10:01:23 +01:00