Many of the inc/dec ops are mandatory, but for most architectures inc/dec are
simply trivial wrappers around their corresponding add/sub ops.
Let's make all the inc/dec ops optional, so that we can get rid of these
boilerplate wrappers.
The instrumented atomics are updated accordingly.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutl...@arm.com>
Cc: Boqun Feng <boqun.f...@gmail.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Will Deacon <will.dea...@arm.com>
---
arch/alpha/include/asm/atomic.h | 12 -----
arch/arc/include/asm/atomic.h | 11 -----
arch/arm/include/asm/atomic.h | 11 -----
arch/arm64/include/asm/atomic.h | 24 ----------
arch/h8300/include/asm/atomic.h | 7 ---
arch/hexagon/include/asm/atomic.h | 6 ---
arch/ia64/include/asm/atomic.h | 9 ----
arch/m68k/include/asm/atomic.h | 5 +-
arch/mips/include/asm/atomic.h | 38 ----------------
arch/parisc/include/asm/atomic.h | 12 -----
arch/powerpc/include/asm/atomic.h | 4 ++
arch/riscv/include/asm/atomic.h | 76 -------------------------------
arch/s390/include/asm/atomic.h | 8 ----
arch/sh/include/asm/atomic.h | 6 ---
arch/sparc/include/asm/atomic_32.h | 5 --
arch/sparc/include/asm/atomic_64.h | 12 -----
arch/x86/include/asm/atomic.h | 5 +-
arch/x86/include/asm/atomic64_32.h | 4 ++
arch/x86/include/asm/atomic64_64.h | 5 +-
arch/xtensa/include/asm/atomic.h | 32 -------------
include/asm-generic/atomic-instrumented.h | 24 ++++++++++
include/asm-generic/atomic.h | 13 ------
include/asm-generic/atomic64.h | 5 --
include/linux/atomic.h | 48 +++++++++++++++++++
24 files changed, 86 insertions(+), 296 deletions(-)
[...]
diff --git a/arch/riscv/include/asm/atomic.h b/arch/riscv/include/asm/atomic.h
index 68eef0a805ca..512b89485790 100644
--- a/arch/riscv/include/asm/atomic.h
+++ b/arch/riscv/include/asm/atomic.h
@@ -209,82 +209,6 @@ ATOMIC_OPS(xor, xor, i)
#undef ATOMIC_FETCH_OP
#undef ATOMIC_OP_RETURN
-#define ATOMIC_OP(op, func_op, I, c_type, prefix) \
-static __always_inline \
-void atomic##prefix##_##op(atomic##prefix##_t *v) \
-{ \
- atomic##prefix##_##func_op(I, v); \
-}
-
-#define ATOMIC_FETCH_OP(op, func_op, I, c_type, prefix)
\
-static __always_inline \
-c_type atomic##prefix##_fetch_##op##_relaxed(atomic##prefix##_t *v) \
-{ \
- return atomic##prefix##_fetch_##func_op##_relaxed(I, v); \
-} \
-static __always_inline \
-c_type atomic##prefix##_fetch_##op(atomic##prefix##_t *v) \
-{ \
- return atomic##prefix##_fetch_##func_op(I, v); \
-}
-
-#define ATOMIC_OP_RETURN(op, asm_op, c_op, I, c_type, prefix) \
-static __always_inline \
-c_type atomic##prefix##_##op##_return_relaxed(atomic##prefix##_t *v) \
-{ \
- return atomic##prefix##_fetch_##op##_relaxed(v) c_op I;
\
-} \
-static __always_inline \
-c_type atomic##prefix##_##op##_return(atomic##prefix##_t *v) \
-{ \
- return atomic##prefix##_fetch_##op(v) c_op I; \
-}
-
-#ifdef CONFIG_GENERIC_ATOMIC64
-#define ATOMIC_OPS(op, asm_op, c_op, I)
\
- ATOMIC_OP( op, asm_op, I, int, )
\
- ATOMIC_FETCH_OP( op, asm_op, I, int, )
\
- ATOMIC_OP_RETURN(op, asm_op, c_op, I, int, )
-#else
-#define ATOMIC_OPS(op, asm_op, c_op, I)
\
- ATOMIC_OP( op, asm_op, I, int, )
\
- ATOMIC_FETCH_OP( op, asm_op, I, int, )
\
- ATOMIC_OP_RETURN(op, asm_op, c_op, I, int, )
\
- ATOMIC_OP( op, asm_op, I, long, 64)
\
- ATOMIC_FETCH_OP( op, asm_op, I, long, 64)
\
- ATOMIC_OP_RETURN(op, asm_op, c_op, I, long, 64)
-#endif
-
-ATOMIC_OPS(inc, add, +, 1)
-ATOMIC_OPS(dec, add, +, -1)
-
-#define atomic_inc_return_relaxed atomic_inc_return_relaxed
-#define atomic_dec_return_relaxed atomic_dec_return_relaxed
-#define atomic_inc_return atomic_inc_return
-#define atomic_dec_return atomic_dec_return
-
-#define atomic_fetch_inc_relaxed atomic_fetch_inc_relaxed
-#define atomic_fetch_dec_relaxed atomic_fetch_dec_relaxed
-#define atomic_fetch_inc atomic_fetch_inc
-#define atomic_fetch_dec atomic_fetch_dec
-
-#ifndef CONFIG_GENERIC_ATOMIC64
-#define atomic64_inc_return_relaxed atomic64_inc_return_relaxed
-#define atomic64_dec_return_relaxed atomic64_dec_return_relaxed
-#define atomic64_inc_return atomic64_inc_return
-#define atomic64_dec_return atomic64_dec_return
-
-#define atomic64_fetch_inc_relaxed atomic64_fetch_inc_relaxed
-#define atomic64_fetch_dec_relaxed atomic64_fetch_dec_relaxed
-#define atomic64_fetch_inc atomic64_fetch_inc
-#define atomic64_fetch_dec atomic64_fetch_dec
-#endif
-
-#undef ATOMIC_OPS
-#undef ATOMIC_OP
-#undef ATOMIC_FETCH_OP
-#undef ATOMIC_OP_RETURN
-
/* This is required to provide a full barrier on success. */
static __always_inline int atomic_fetch_add_unless(atomic_t *v, int a, int u)
{
