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| author | David S. Miller <davem@davemloft.net> | 2018-04-03 08:24:35 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-03 08:24:35 -0700 |
| commit | d13864b68e41c11e4231de90cf358658f6ecea45 (patch) | |
| tree | f44c955ab5afa697d91f214b74b5ed651a46db9d | |
| parent | 49d7006d9f01d435661d03bbea3db4c33935b3d8 (diff) | |
| download | linux-d13864b68e41c11e4231de90cf358658f6ecea45.tar.bz2 | |
sparc64: Make atomic_xchg() an inline function rather than a macro.
This avoids a lot of -Wunused warnings such as:
====================
kernel/debug/debug_core.c: In function ‘kgdb_cpu_enter’:
./arch/sparc/include/asm/cmpxchg_64.h:55:22: warning: value computed is not used [-Wunused-value]
#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
./arch/sparc/include/asm/atomic_64.h:86:30: note: in expansion of macro ‘xchg’
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
^~~~
kernel/debug/debug_core.c:508:4: note: in expansion of macro ‘atomic_xchg’
atomic_xchg(&kgdb_active, cpu);
^~~~~~~~~~~
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | arch/sparc/include/asm/atomic_64.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h index abad97edf736..28db058d471b 100644 --- a/arch/sparc/include/asm/atomic_64.h +++ b/arch/sparc/include/asm/atomic_64.h @@ -83,7 +83,11 @@ ATOMIC_OPS(xor) #define atomic64_add_negative(i, v) (atomic64_add_return(i, v) < 0) #define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n))) -#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) + +static inline int atomic_xchg(atomic_t *v, int new) +{ + return xchg(&v->counter, new); +} static inline int __atomic_add_unless(atomic_t *v, int a, int u) { |