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Commit d42cb1a9 authored by Matthew Wilcox's avatar Matthew Wilcox Committed by Linus Torvalds
Browse files

radix tree test suite: add tests for radix_tree_locate_item() 



Fairly simple tests; add various items to the tree, then make sure we
can find them again.  Also check that a pointer that we know isn't in
the tree is not found.

Signed-off-by: default avatarMatthew Wilcox <willy@linux.intel.com>
Reviewed-by: default avatarRoss Zwisler <ross.zwisler@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jan Kara <jack@suse.com>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f518b160

tools/testing/radix-tree/linux/kernel.h

+3 −0
Original line number Diff line number Diff line
@@ -9,6 +9,9 @@ 


#include "../../include/linux/compiler.h"



#define CONFIG_SHMEM

#define CONFIG_SWAP



#ifndef NULL

#define NULL	0

#endif

tools/testing/radix-tree/main.c

+41 −0
Original line number Diff line number Diff line
@@ -232,10 +232,51 @@ void copy_tag_check(void) 
	item_kill_tree(&tree);

}



void __locate_check(struct radix_tree_root *tree, unsigned long index)

{

	struct item *item;

	unsigned long index2;



	item_insert(tree, index);

	item = item_lookup(tree, index);

	index2 = radix_tree_locate_item(tree, item);

	if (index != index2) {

		printf("index %ld inserted; found %ld\n",

			index, index2);

		abort();

	}

}



static void locate_check(void)

{

	RADIX_TREE(tree, GFP_KERNEL);

	unsigned long offset, index;



	for (offset = 0; offset < (1 << 3); offset++) {

		for (index = 0; index < (1UL << 5); index++) {

			__locate_check(&tree, index + offset);

		}

		if (radix_tree_locate_item(&tree, &tree) != -1)

			abort();



		item_kill_tree(&tree);

	}



	if (radix_tree_locate_item(&tree, &tree) != -1)

		abort();

	__locate_check(&tree, -1);

	if (radix_tree_locate_item(&tree, &tree) != -1)

		abort();

	item_kill_tree(&tree);

}



static void single_thread_tests(void)

{

	int i;



	printf("starting single_thread_tests: %d allocated\n", nr_allocated);

	locate_check();

	printf("after locate_check: %d allocated\n", nr_allocated);

	tag_check();

	printf("after tag_check: %d allocated\n", nr_allocated);

	gang_check();