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authorLinus Torvalds <torvalds@linux-foundation.org>2023-06-27 14:14:30 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2023-06-27 14:14:30 -0700
commitbc6cb4d5bc3a44197de30784eae71d8ba28483eb (patch)
treefdd00391c6068c217eeb8a4a06afc40cc1fc6853 /arch/alpha
parented3b7923a816ded62dccef377c9ee346c7d3b1b4 (diff)
parentb33eb50a92b0a298fa8a6ac350e741c3ec100f6d (diff)
Merge tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar: - Introduce cmpxchg128() -- aka. the demise of cmpxchg_double() The cmpxchg128() family of functions is basically & functionally the same as cmpxchg_double(), but with a saner interface. Instead of a 6-parameter horror that forced u128 - u64/u64-halves layout details on the interface and exposed users to complexity, fragility & bugs, use a natural 3-parameter interface with u128 types. - Restructure the generated atomic headers, and add kerneldoc comments for all of the generic atomic{,64,_long}_t operations. The generated definitions are much cleaner now, and come with documentation. - Implement lock_set_cmp_fn() on lockdep, for defining an ordering when taking multiple locks of the same type. This gets rid of one use of lockdep_set_novalidate_class() in the bcache code. - Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended variable shadowing generating garbage code on Clang on certain ARM builds. * tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits) locking/atomic: scripts: fix ${atomic}_dec_if_positive() kerneldoc percpu: Fix self-assignment of __old in raw_cpu_generic_try_cmpxchg() locking/atomic: treewide: delete arch_atomic_*() kerneldoc locking/atomic: docs: Add atomic operations to the driver basic API documentation locking/atomic: scripts: generate kerneldoc comments docs: scripts: kernel-doc: accept bitwise negation like ~@var locking/atomic: scripts: simplify raw_atomic*() definitions locking/atomic: scripts: simplify raw_atomic_long*() definitions locking/atomic: scripts: split pfx/name/sfx/order locking/atomic: scripts: restructure fallback ifdeffery locking/atomic: scripts: build raw_atomic_long*() directly locking/atomic: treewide: use raw_atomic*_<op>() locking/atomic: scripts: add trivial raw_atomic*_<op>() locking/atomic: scripts: factor out order template generation locking/atomic: scripts: remove leftover "${mult}" locking/atomic: scripts: remove bogus order parameter locking/atomic: xtensa: add preprocessor symbols locking/atomic: x86: add preprocessor symbols locking/atomic: sparc: add preprocessor symbols locking/atomic: sh: add preprocessor symbols ...
Diffstat (limited to 'arch/alpha')
-rw-r--r--arch/alpha/include/asm/atomic.h35
1 files changed, 0 insertions, 35 deletions
diff --git a/arch/alpha/include/asm/atomic.h b/arch/alpha/include/asm/atomic.h
index f2861a43a61e..cbd9244571af 100644
--- a/arch/alpha/include/asm/atomic.h
+++ b/arch/alpha/include/asm/atomic.h
@@ -200,25 +200,6 @@ ATOMIC_OPS(xor, xor)
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP
-#define arch_atomic64_cmpxchg(v, old, new) \
- (arch_cmpxchg(&((v)->counter), old, new))
-#define arch_atomic64_xchg(v, new) \
- (arch_xchg(&((v)->counter), new))
-
-#define arch_atomic_cmpxchg(v, old, new) \
- (arch_cmpxchg(&((v)->counter), old, new))
-#define arch_atomic_xchg(v, new) \
- (arch_xchg(&((v)->counter), new))
-
-/**
- * arch_atomic_fetch_add_unless - add unless the number is a given value
- * @v: pointer of type atomic_t
- * @a: the amount to add to v...
- * @u: ...unless v is equal to u.
- *
- * Atomically adds @a to @v, so long as it was not @u.
- * Returns the old value of @v.
- */
static __inline__ int arch_atomic_fetch_add_unless(atomic_t *v, int a, int u)
{
int c, new, old;
@@ -242,15 +223,6 @@ static __inline__ int arch_atomic_fetch_add_unless(atomic_t *v, int a, int u)
}
#define arch_atomic_fetch_add_unless arch_atomic_fetch_add_unless
-/**
- * arch_atomic64_fetch_add_unless - add unless the number is a given value
- * @v: pointer of type atomic64_t
- * @a: the amount to add to v...
- * @u: ...unless v is equal to u.
- *
- * Atomically adds @a to @v, so long as it was not @u.
- * Returns the old value of @v.
- */
static __inline__ s64 arch_atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)
{
s64 c, new, old;
@@ -274,13 +246,6 @@ static __inline__ s64 arch_atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u
}
#define arch_atomic64_fetch_add_unless arch_atomic64_fetch_add_unless
-/*
- * arch_atomic64_dec_if_positive - decrement by 1 if old value positive
- * @v: pointer of type atomic_t
- *
- * The function returns the old value of *v minus 1, even if
- * the atomic variable, v, was not decremented.
- */
static inline s64 arch_atomic64_dec_if_positive(atomic64_t *v)
{
s64 old, tmp;