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| author | Matthew Wilcox <willy@linux.intel.com> | 2016-03-17 14:21:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-17 15:09:34 -0700 |
| commit | 7cf19af4debc804e408b059d58df7c9c226ca6fb (patch) | |
| tree | 650d5a0be06e519c954f421c8352cdb86fd1a81e | |
| parent | e61452365372570253b2b1de84bab0cdb2e62c64 (diff) | |
| download | linux-7cf19af4debc804e408b059d58df7c9c226ca6fb.tar.bz2 | |
radix_tree: add radix_tree_dump
This is debug code which is #if 0 out.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | lib/radix-tree.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/lib/radix-tree.c b/lib/radix-tree.c index d907dca302d5..1624c4117961 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -173,6 +173,41 @@ radix_tree_find_next_bit(const unsigned long *addr, return size; } +#if 0 +static void dump_node(void *slot, int height, int offset) +{ + struct radix_tree_node *node; + int i; + + if (!slot) + return; + + if (height == 0) { + pr_debug("radix entry %p offset %d\n", slot, offset); + return; + } + + node = indirect_to_ptr(slot); + pr_debug("radix node: %p offset %d tags %lx %lx %lx path %x count %d parent %p\n", + slot, offset, node->tags[0][0], node->tags[1][0], + node->tags[2][0], node->path, node->count, node->parent); + + for (i = 0; i < RADIX_TREE_MAP_SIZE; i++) + dump_node(node->slots[i], height - 1, i); +} + +/* For debug */ +static void radix_tree_dump(struct radix_tree_root *root) +{ + pr_debug("radix root: %p height %d rnode %p tags %x\n", + root, root->height, root->rnode, + root->gfp_mask >> __GFP_BITS_SHIFT); + if (!radix_tree_is_indirect_ptr(root->rnode)) + return; + dump_node(root->rnode, root->height, 0); +} +#endif + /* * This assumes that the caller has performed appropriate preallocation, and * that the caller has pinned this thread of control to the current CPU. |