Changeset 679 for GPL/trunk/include/asm/atomic.h

Timestamp:

Mar 18, 2021, 8:57:36 PM (4 years ago)

Author:

David Azarewicz

Message:

Merge changes from Paul's uniaud32next branch.

Location:

GPL/trunk

Files:

• . (modified) (1 prop)
• include/asm/atomic.h (modified) (1 diff)

GPL/trunk/include/asm/atomic.h

@@ -46 +46 @@
 #define atomic_clear_mask(mask, addr) 
 
+/**
+ * atomic_add_return - add integer to atomic variable
+ * @i: integer value to add
+ * @v: pointer of type atomic_t
+ *
+ * Atomically adds @i to @v and returns the result
+ */
+static inline int atomic_add_return(int i, atomic_t *v)
+{
+        //unsigned long flags;
+        int temp;
+
+        //raw_local_irq_save(flags); /* Don't trace it in an irqsoff handler */
+        temp = v->counter;
+        temp += i;
+        v->counter = temp;
+        //raw_local_irq_restore(flags);
+
+        return temp;
+}
+
+/**
+ * atomic_sub_return - subtract integer from atomic variable
+ * @i: integer value to subtract
+ * @v: pointer of type atomic_t
+ *
+ * Atomically subtracts @i from @v and returns the result
+ */
+static inline int atomic_sub_return(int i, atomic_t *v)
+{
+        //unsigned long flags;
+        int temp;
+
+        //raw_local_irq_save(flags); /* Don't trace it in an irqsoff handler */
+        temp = v->counter;
+        temp -= i;
+        v->counter = temp;
+        //raw_local_irq_restore(flags);
+
+        return temp;
+}
+
 #define atomic_set_mask(mask, addr) 
+#define atomic_sub_and_test(i, v)       (atomic_sub_return((i), (v)) == 0)
+#define atomic_inc_return(v)            atomic_add_return(1, (v))
 
+typedef struct {
+        long long counter;
+} atomic64_t;
+
+typedef atomic64_t atomic_long_t;
 #endif