diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2023-06-05 10:01:01 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-06-05 10:57:14 +0300 |
| commit | d12157efc8e083c77d054675fcdd594f54cc7e2b (patch) | |
| tree | 9be23f46b4b8db9d3e36a8b551d8961d8d41822d /arch/alpha | |
| parent | a7bafa7969da1c0e9c342c792d8224078d1c491c (diff) | |
| download | linux-d12157efc8e083c77d054675fcdd594f54cc7e2b.tar.xz | |
locking/atomic: make atomic*_{cmp,}xchg optional
Most architectures define the atomic/atomic64 xchg and cmpxchg
operations in terms of arch_xchg and arch_cmpxchg respectfully.
Add fallbacks for these cases and remove the trivial cases from arch
code. On some architectures the existing definitions are kept as these
are used to build other arch_atomic*() operations.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230605070124.3741859-5-mark.rutland@arm.com
Diffstat (limited to 'arch/alpha')
| -rw-r--r-- | arch/alpha/include/asm/atomic.h | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/alpha/include/asm/atomic.h b/arch/alpha/include/asm/atomic.h index f2861a43a61e..ec8ab552c527 100644 --- a/arch/alpha/include/asm/atomic.h +++ b/arch/alpha/include/asm/atomic.h @@ -200,16 +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 |