Changeset 615 for GPL/branches/uniaud32-next/include/asm/atomic.h

Timestamp:

Jan 1, 2021, 5:31:48 AM (5 years ago)

Author:

Paul Smedley

Message:

Add source for uniaud32 based on code from linux kernel 5.4.86

Location:

GPL/branches/uniaud32-next

Files:

• . (copied) (copied from GPL/branches/uniaud32-linux-3.2.102 )
• include/asm/atomic.h (modified) (1 diff)

GPL/branches/uniaud32-next/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))
+
 
 #endif