The build of frv allmodconfig was failing with the error:
lib/atomic64_test.c:209:9: error:
implicit declaration of function 'atomic64_add_unless'
All the atomic64 operations were defined in frv, but
atomic64_add_unless() was not done.
Implement atomic64_add_unless() as done in other arch.
Signed-off-by: Sudip Mukherjee <[email protected]>
---
build log of next-20170118 is at:
https://travis-ci.org/sudipm-mukherjee/parport/jobs/192936474
There is also two more errors about redefinition. I will prepare
separate patch for that.
arch/frv/include/asm/atomic.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/frv/include/asm/atomic.h b/arch/frv/include/asm/atomic.h
index 1c2a5e2..994ed3d 100644
--- a/arch/frv/include/asm/atomic.h
+++ b/arch/frv/include/asm/atomic.h
@@ -161,6 +161,22 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int
a, int u)
return c;
}
+static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u)
+{
+ long long c, old;
+
+ c = atomic64_read(v);
+ for (;;) {
+ if (unlikely(c == u))
+ break;
+ old = atomic64_cmpxchg(v, c, c + i);
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != u;
+}
+
#define ATOMIC_OP(op) \
static inline int atomic_fetch_##op(int i, atomic_t *v)
\
{ \
--
2.7.4
