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| author | Mark Rutland <mark.rutland@arm.com> | 2023-06-05 10:01:07 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-06-05 10:57:16 +0300 |
| commit | 770345adc38485c688e5d832d82306a4c2da828c (patch) | |
| tree | 376007fac0a9610b33999c781c804934dd55d743 | |
| parent | 07bf3dcbe0e199422598f12918021c516161fd12 (diff) | |
| download | linux-770345adc38485c688e5d832d82306a4c2da828c.tar.xz | |
locking/atomic: sh: add preprocessor symbols
Some atomics can be implemented in several different ways, e.g.
FULL/ACQUIRE/RELEASE ordered atomics can be implemented in terms of
RELAXED atomics, and ACQUIRE/RELEASE/RELAXED can be implemented in terms
of FULL ordered atomics. Other atomics are optional, and don't exist in
some configurations (e.g. not all architectures implement the 128-bit
cmpxchg ops).
Subsequent patches will require that architectures define a preprocessor
symbol for any atomic (or ordering variant) which is optional. This will
make the fallback ifdeffery more robust, and simplify future changes.
Add the required definitions to arch/sh.
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/20230605070124.3741859-11-mark.rutland@arm.com
| -rw-r--r-- | arch/sh/include/asm/atomic-grb.h | 9 | ||||
| -rw-r--r-- | arch/sh/include/asm/atomic-irq.h | 9 | ||||
| -rw-r--r-- | arch/sh/include/asm/atomic-llsc.h | 9 |
3 files changed, 27 insertions, 0 deletions
diff --git a/arch/sh/include/asm/atomic-grb.h b/arch/sh/include/asm/atomic-grb.h index 059791fd394f..cf1c10f15528 100644 --- a/arch/sh/include/asm/atomic-grb.h +++ b/arch/sh/include/asm/atomic-grb.h @@ -71,6 +71,11 @@ static inline int arch_atomic_fetch_##op(int i, atomic_t *v) \ ATOMIC_OPS(add) ATOMIC_OPS(sub) +#define arch_atomic_add_return arch_atomic_add_return +#define arch_atomic_sub_return arch_atomic_sub_return +#define arch_atomic_fetch_add arch_atomic_fetch_add +#define arch_atomic_fetch_sub arch_atomic_fetch_sub + #undef ATOMIC_OPS #define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op) @@ -78,6 +83,10 @@ ATOMIC_OPS(and) ATOMIC_OPS(or) ATOMIC_OPS(xor) +#define arch_atomic_fetch_and arch_atomic_fetch_and +#define arch_atomic_fetch_or arch_atomic_fetch_or +#define arch_atomic_fetch_xor arch_atomic_fetch_xor + #undef ATOMIC_OPS #undef ATOMIC_FETCH_OP #undef ATOMIC_OP_RETURN diff --git a/arch/sh/include/asm/atomic-irq.h b/arch/sh/include/asm/atomic-irq.h index 7665de9d00d0..b4090cc35493 100644 --- a/arch/sh/include/asm/atomic-irq.h +++ b/arch/sh/include/asm/atomic-irq.h @@ -55,6 +55,11 @@ static inline int arch_atomic_fetch_##op(int i, atomic_t *v) \ ATOMIC_OPS(add, +=) ATOMIC_OPS(sub, -=) +#define arch_atomic_add_return arch_atomic_add_return +#define arch_atomic_sub_return arch_atomic_sub_return +#define arch_atomic_fetch_add arch_atomic_fetch_add +#define arch_atomic_fetch_sub arch_atomic_fetch_sub + #undef ATOMIC_OPS #define ATOMIC_OPS(op, c_op) \ ATOMIC_OP(op, c_op) \ @@ -64,6 +69,10 @@ ATOMIC_OPS(and, &=) ATOMIC_OPS(or, |=) ATOMIC_OPS(xor, ^=) +#define arch_atomic_fetch_and arch_atomic_fetch_and +#define arch_atomic_fetch_or arch_atomic_fetch_or +#define arch_atomic_fetch_xor arch_atomic_fetch_xor + #undef ATOMIC_OPS #undef ATOMIC_FETCH_OP #undef ATOMIC_OP_RETURN diff --git a/arch/sh/include/asm/atomic-llsc.h b/arch/sh/include/asm/atomic-llsc.h index b63dcfbfa14e..9ef1fb1dd12e 100644 --- a/arch/sh/include/asm/atomic-llsc.h +++ b/arch/sh/include/asm/atomic-llsc.h @@ -73,6 +73,11 @@ static inline int arch_atomic_fetch_##op(int i, atomic_t *v) \ ATOMIC_OPS(add) ATOMIC_OPS(sub) +#define arch_atomic_add_return arch_atomic_add_return +#define arch_atomic_sub_return arch_atomic_sub_return +#define arch_atomic_fetch_add arch_atomic_fetch_add +#define arch_atomic_fetch_sub arch_atomic_fetch_sub + #undef ATOMIC_OPS #define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op) @@ -80,6 +85,10 @@ ATOMIC_OPS(and) ATOMIC_OPS(or) ATOMIC_OPS(xor) +#define arch_atomic_fetch_and arch_atomic_fetch_and +#define arch_atomic_fetch_or arch_atomic_fetch_or +#define arch_atomic_fetch_xor arch_atomic_fetch_xor + #undef ATOMIC_OPS #undef ATOMIC_FETCH_OP #undef ATOMIC_OP_RETURN |