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| author | Kuan-Wei Chiu <visitorckw@gmail.com> | 2024-03-05 21:30:10 +0800 |
|---|---|---|
| committer | Kuan-Wei Chiu <visitorckw@gmail.com> | 2024-04-25 21:31:03 +0800 |
| commit | 4b004992fb1469652017cb336a2cba284c7e6ba4 (patch) | |
| tree | 77489b814f33a5be219fdb787c49d0a459dcec01 | |
| parent | a8d3930625b12baf8f5da5f6610493b0e4b2e898 (diff) | |
lib min_heap: Add min_heap_init()
Add min_heap_init() for initializing heap with data, nr, and size.
Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Reviewed-by: Ian Rogers <irogers@google.com>
| -rw-r--r-- | include/linux/min_heap.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/min_heap.h b/include/linux/min_heap.h index 87737cadb9a5..f6b07fb8b2d3 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, |