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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 21:00:37 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 21:00:37 +0000 |
| commit | 94ac2ab3fff96814d7460a27a0e9d004abbd4128 (patch) | |
| tree | 9a4eb8cc234b540b0f4b93363109cdd37a20540b /drivers/md/dm-vdo/indexer/radix-sort.h | |
| parent | Adding debian version 6.8.12-1. (diff) | |
| download | linux-94ac2ab3fff96814d7460a27a0e9d004abbd4128.tar.xz linux-94ac2ab3fff96814d7460a27a0e9d004abbd4128.zip | |
Merging upstream version 6.9.2.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/md/dm-vdo/indexer/radix-sort.h')
| -rw-r--r-- | drivers/md/dm-vdo/indexer/radix-sort.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/md/dm-vdo/indexer/radix-sort.h b/drivers/md/dm-vdo/indexer/radix-sort.h new file mode 100644 index 0000000000..812949bc2c --- /dev/null +++ b/drivers/md/dm-vdo/indexer/radix-sort.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright 2023 Red Hat + */ + +#ifndef UDS_RADIX_SORT_H +#define UDS_RADIX_SORT_H + +/* + * Radix sort is implemented using an American Flag sort, an unstable, in-place 8-bit radix + * exchange sort. This is adapted from the algorithm in the paper by Peter M. McIlroy, Keith + * Bostic, and M. Douglas McIlroy, "Engineering Radix Sort". + * + * http://www.usenix.org/publications/compsystems/1993/win_mcilroy.pdf + */ + +struct radix_sorter; + +int __must_check uds_make_radix_sorter(unsigned int count, struct radix_sorter **sorter); + +void uds_free_radix_sorter(struct radix_sorter *sorter); + +int __must_check uds_radix_sort(struct radix_sorter *sorter, const unsigned char *keys[], + unsigned int count, unsigned short length); + +#endif /* UDS_RADIX_SORT_H */ |