From: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Subject: 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: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Reviewed-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Cc: Konstantin Khlebnikov <koct9i@xxxxxxxxx>
Cc: Kirill Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxxx>
Cc: Neil Brown <neilb@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/radix-tree/linux/kernel.h | 3 +
tools/testing/radix-tree/main.c | 41 ++++++++++++++++++++++
2 files changed, 44 insertions(+)
diff -puN tools/testing/radix-tree/linux/kernel.h~radix-tree-test-suite-add-tests-for-radix_tree_locate_item tools/testing/radix-tree/linux/kernel.h
--- a/tools/testing/radix-tree/linux/kernel.h~radix-tree-test-suite-add-tests-for-radix_tree_locate_item
+++ a/tools/testing/radix-tree/linux/kernel.h
@@ -9,6 +9,9 @@
#include "../../include/linux/compiler.h"
+#define CONFIG_SHMEM
+#define CONFIG_SWAP
+
#ifndef NULL
#define NULL 0
#endif
diff -puN tools/testing/radix-tree/main.c~radix-tree-test-suite-add-tests-for-radix_tree_locate_item tools/testing/radix-tree/main.c
--- a/tools/testing/radix-tree/main.c~radix-tree-test-suite-add-tests-for-radix_tree_locate_item
+++ a/tools/testing/radix-tree/main.c
@@ -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();
_
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
