Add min_heap_init() for initializing heap with data, nr, and size.
Signed-off-by: Kuan-Wei Chiu <[email protected]>
Reviewed-by: Ian Rogers <[email protected]>
---
include/linux/min_heap.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/include/linux/min_heap.h b/include/linux/min_heap.h
index 92830f41642a..b384a4ea2afa 100644
--- a/include/linux/min_heap.h
+++ b/include/linux/min_heap.h
@@ -38,6 +38,21 @@ struct min_heap_callbacks {
void (*swp)(void *lhs, void *rhs);
};
+/* Initialize a min-heap. */
+static __always_inline
+void __min_heap_init(min_heap_char *heap, void *data, int size)
+{
+ heap->nr = 0;
+ heap->size = size;
+ if (data)
+ heap->data = data;
+ else
+ heap->data = heap->preallocated;
+}
+
+#define min_heap_init(_heap, _data, _size) \
+ __min_heap_init((min_heap_char *)_heap, _data, _size)
+
/* Sift the element at pos down the heap. */
static __always_inline
void __min_heapify(min_heap_char *heap, int pos, size_t elem_size,
--
2.34.1