Merge tag 'locking-core-2026-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:
 "Lock debugging:

   - Implement compiler-driven static analysis locking context checking,
     using the upcoming Clang 22 compiler's context analysis features
     (Marco Elver)

     We removed Sparse context analysis support, because prior to
     removal even a defconfig kernel produced 1,700+ context tracking
     Sparse warnings, the overwhelming majority of which are false
     positives. On an allmodconfig kernel the number of false positive
     context tracking Sparse warnings grows to over 5,200... On the plus
     side of the balance actual locking bugs found by Sparse context
     analysis is also rather ... sparse: I found only 3 such commits in
     the last 3 years. So the rate of false positives and the
     maintenance overhead is rather high and there appears to be no
     active policy in place to achieve a zero-warnings baseline to move
     the annotations & fixers to developers who introduce new code.

     Clang context analysis is more complete and more aggressive in
     trying to find bugs, at least in principle. Plus it has a different
     model to enabling it: it's enabled subsystem by subsystem, which
     results in zero warnings on all relevant kernel builds (as far as
     our testing managed to cover it). Which allowed us to enable it by
     default, similar to other compiler warnings, with the expectation
     that there are no warnings going forward. This enforces a
     zero-warnings baseline on clang-22+ builds (Which are still limited
     in distribution, admittedly)

     Hopefully the Clang approach can lead to a more maintainable
     zero-warnings status quo and policy, with more and more subsystems
     and drivers enabling the feature. Context tracking can be enabled
     for all kernel code via WARN_CONTEXT_ANALYSIS_ALL=y (default
     disabled), but this will generate a lot of false positives.

     ( Having said that, Sparse support could still be added back,
       if anyone is interested - the removal patch is still
       relatively straightforward to revert at this stage. )

  Rust integration updates: (Alice Ryhl, Fujita Tomonori, Boqun Feng)

    - Add support for Atomic<i8/i16/bool> and replace most Rust native
      AtomicBool usages with Atomic<bool>

    - Clean up LockClassKey and improve its documentation

    - Add missing Send and Sync trait implementation for SetOnce

    - Make ARef Unpin as it is supposed to be

    - Add __rust_helper to a few Rust helpers as a preparation for
      helper LTO

    - Inline various lock related functions to avoid additional function
      calls

  WW mutexes:

    - Extend ww_mutex tests and other test-ww_mutex updates (John
      Stultz)

  Misc fixes and cleanups:

    - rcu: Mark lockdep_assert_rcu_helper() __always_inline (Arnd
      Bergmann)

    - locking/local_lock: Include more missing headers (Peter Zijlstra)

    - seqlock: fix scoped_seqlock_read kernel-doc (Randy Dunlap)

    - rust: sync: Replace `kernel::c_str!` with C-Strings (Tamir
      Duberstein)"

* tag 'locking-core-2026-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (90 commits)
  locking/rwlock: Fix write_trylock_irqsave() with CONFIG_INLINE_WRITE_TRYLOCK
  rcu: Mark lockdep_assert_rcu_helper() __always_inline
  compiler-context-analysis: Remove __assume_ctx_lock from initializers
  tomoyo: Use scoped init guard
  crypto: Use scoped init guard
  kcov: Use scoped init guard
  compiler-context-analysis: Introduce scoped init guards
  cleanup: Make __DEFINE_LOCK_GUARD handle commas in initializers
  seqlock: fix scoped_seqlock_read kernel-doc
  tools: Update context analysis macros in compiler_types.h
  rust: sync: Replace `kernel::c_str!` with C-Strings
  rust: sync: Inline various lock related methods
  rust: helpers: Move #define __rust_helper out of atomic.c
  rust: wait: Add __rust_helper to helpers
  rust: time: Add __rust_helper to helpers
  rust: task: Add __rust_helper to helpers
  rust: sync: Add __rust_helper to helpers
  rust: refcount: Add __rust_helper to helpers
  rust: rcu: Add __rust_helper to helpers
  rust: processor: Add __rust_helper to helpers
  ...

3 files changed, 27 insertions, 27 deletions

diff --git a/include/linux/atomic/atomic-arch-fallback.h b/include/linux/atomic/atomic-arch-fallback.h
index 2f9d36b72bd8..cdc25f8979f7 100644
--- a/include/linux/atomic/atomic-arch-fallback.h
+++ b/include/linux/atomic/atomic-arch-fallback.h
@@ -2121,7 +2121,7 @@ raw_atomic_cmpxchg_relaxed(atomic_t *v, int old, int new)
  *
  * Safe to use in noinstr code; prefer atomic_try_cmpxchg() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic_try_cmpxchg(atomic_t *v, int *old, int new)
@@ -2155,7 +2155,7 @@ raw_atomic_try_cmpxchg(atomic_t *v, int *old, int new)
  *
  * Safe to use in noinstr code; prefer atomic_try_cmpxchg_acquire() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new)
@@ -2189,7 +2189,7 @@ raw_atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new)
  *
  * Safe to use in noinstr code; prefer atomic_try_cmpxchg_release() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
@@ -2222,7 +2222,7 @@ raw_atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
  *
  * Safe to use in noinstr code; prefer atomic_try_cmpxchg_relaxed() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic_try_cmpxchg_relaxed(atomic_t *v, int *old, int new)
@@ -4247,7 +4247,7 @@ raw_atomic64_cmpxchg_relaxed(atomic64_t *v, s64 old, s64 new)
  *
  * Safe to use in noinstr code; prefer atomic64_try_cmpxchg() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
@@ -4281,7 +4281,7 @@ raw_atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
  *
  * Safe to use in noinstr code; prefer atomic64_try_cmpxchg_acquire() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new)
@@ -4315,7 +4315,7 @@ raw_atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new)
  *
  * Safe to use in noinstr code; prefer atomic64_try_cmpxchg_release() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
@@ -4348,7 +4348,7 @@ raw_atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
  *
  * Safe to use in noinstr code; prefer atomic64_try_cmpxchg_relaxed() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic64_try_cmpxchg_relaxed(atomic64_t *v, s64 *old, s64 new)
@@ -4690,4 +4690,4 @@ raw_atomic64_dec_if_positive(atomic64_t *v)
 }
 
 #endif /* _LINUX_ATOMIC_FALLBACK_H */
-// b565db590afeeff0d7c9485ccbca5bb6e155749f
+// 206314f82b8b73a5c3aa69cf7f35ac9e7b5d6b58
diff --git a/include/linux/atomic/atomic-instrumented.h b/include/linux/atomic/atomic-instrumented.h
index 37ab6314a9f7..feb3b5dc3e96 100644
--- a/include/linux/atomic/atomic-instrumented.h
+++ b/include/linux/atomic/atomic-instrumented.h
@@ -1269,7 +1269,7 @@ atomic_cmpxchg_relaxed(atomic_t *v, int old, int new)
  *
  * Unsafe to use in noinstr code; use raw_atomic_try_cmpxchg() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic_try_cmpxchg(atomic_t *v, int *old, int new)
@@ -1292,7 +1292,7 @@ atomic_try_cmpxchg(atomic_t *v, int *old, int new)
  *
  * Unsafe to use in noinstr code; use raw_atomic_try_cmpxchg_acquire() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new)
@@ -1314,7 +1314,7 @@ atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new)
  *
  * Unsafe to use in noinstr code; use raw_atomic_try_cmpxchg_release() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
@@ -1337,7 +1337,7 @@ atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
  *
  * Unsafe to use in noinstr code; use raw_atomic_try_cmpxchg_relaxed() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic_try_cmpxchg_relaxed(atomic_t *v, int *old, int new)
@@ -2847,7 +2847,7 @@ atomic64_cmpxchg_relaxed(atomic64_t *v, s64 old, s64 new)
  *
  * Unsafe to use in noinstr code; use raw_atomic64_try_cmpxchg() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
@@ -2870,7 +2870,7 @@ atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
  *
  * Unsafe to use in noinstr code; use raw_atomic64_try_cmpxchg_acquire() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new)
@@ -2892,7 +2892,7 @@ atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new)
  *
  * Unsafe to use in noinstr code; use raw_atomic64_try_cmpxchg_release() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
@@ -2915,7 +2915,7 @@ atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
  *
  * Unsafe to use in noinstr code; use raw_atomic64_try_cmpxchg_relaxed() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic64_try_cmpxchg_relaxed(atomic64_t *v, s64 *old, s64 new)
@@ -4425,7 +4425,7 @@ atomic_long_cmpxchg_relaxed(atomic_long_t *v, long old, long new)
  *
  * Unsafe to use in noinstr code; use raw_atomic_long_try_cmpxchg() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
@@ -4448,7 +4448,7 @@ atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
  *
  * Unsafe to use in noinstr code; use raw_atomic_long_try_cmpxchg_acquire() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
@@ -4470,7 +4470,7 @@ atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
  *
  * Unsafe to use in noinstr code; use raw_atomic_long_try_cmpxchg_release() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
@@ -4493,7 +4493,7 @@ atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
  *
  * Unsafe to use in noinstr code; use raw_atomic_long_try_cmpxchg_relaxed() there.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 atomic_long_try_cmpxchg_relaxed(atomic_long_t *v, long *old, long new)
@@ -5050,4 +5050,4 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 
 
 #endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
-// f618ac667f868941a84ce0ab2242f1786e049ed4
+// 9dd948d3012b22c4e75933a5172983f912e46439
diff --git a/include/linux/atomic/atomic-long.h b/include/linux/atomic/atomic-long.h
index f86b29d90877..6a4e47d2db35 100644
--- a/include/linux/atomic/atomic-long.h
+++ b/include/linux/atomic/atomic-long.h
@@ -1449,7 +1449,7 @@ raw_atomic_long_cmpxchg_relaxed(atomic_long_t *v, long old, long new)
  *
  * Safe to use in noinstr code; prefer atomic_long_try_cmpxchg() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
@@ -1473,7 +1473,7 @@ raw_atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
  *
  * Safe to use in noinstr code; prefer atomic_long_try_cmpxchg_acquire() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
@@ -1497,7 +1497,7 @@ raw_atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
  *
  * Safe to use in noinstr code; prefer atomic_long_try_cmpxchg_release() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
@@ -1521,7 +1521,7 @@ raw_atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
  *
  * Safe to use in noinstr code; prefer atomic_long_try_cmpxchg_relaxed() elsewhere.
  *
- * Return: @true if the exchange occured, @false otherwise.
+ * Return: @true if the exchange occurred, @false otherwise.
  */
 static __always_inline bool
 raw_atomic_long_try_cmpxchg_relaxed(atomic_long_t *v, long *old, long new)
@@ -1809,4 +1809,4 @@ raw_atomic_long_dec_if_positive(atomic_long_t *v)
 }
 
 #endif /* _LINUX_ATOMIC_LONG_H */
-// eadf183c3600b8b92b91839dd3be6bcc560c752d
+// 4b882bf19018602c10816c52f8b4ae280adc887b