From: Sudip Mukherjee <sudipm.mukher...@gmail.com>
Some more atomic64 operations were missing and as a result
frv allmodconfig was failing. Add the missing operations.
Signed-off-by: Sudip Mukherjee <sudip.mukher...@codethink.co.uk>
---
arch/frv/include/asm/atomic.h | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/arch/frv/include/asm/atomic.h b/arch/frv/include/asm/atomic.h
index 994ed3d..e93c949 100644
--- a/arch/frv/include/asm/atomic.h
+++ b/arch/frv/include/asm/atomic.h
@@ -139,7 +139,7 @@ static inline void atomic64_dec(atomic64_t *v)
#define atomic64_sub_and_test(i,v) (atomic64_sub_return((i), (v)) == 0)
#define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0)
#define atomic64_inc_and_test(v) (atomic64_inc_return((v)) == 0)
-
+#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
#define atomic_cmpxchg(v, old, new) (cmpxchg(&(v)->counter, old, new))
#define atomic_xchg(v, new) (xchg(&(v)->counter, new))
@@ -177,6 +177,23 @@ static inline int atomic64_add_unless(atomic64_t *v, long
long i, long long u)
return c != u;
}
+static inline long long atomic64_dec_if_positive(atomic64_t *v)
+{
+ long long c, old, dec;
+
+ c = atomic64_read(v);
+ for (;;) {
+ dec = c - 1;
+ if (unlikely(dec < 0))
+ break;
+ old = atomic64_cmpxchg((v), c, dec);
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return dec;
+}
+
#define ATOMIC_OP(op) \
static inline int atomic_fetch_##op(int i, atomic_t *v)
\
{ \
--
2.7.4
