[PATCH v3 11/33] radix tree test suite: record order in each item

Matthew Wilcox
2016-11-28T20:08:39Z

From: Matthew Wilcox <mawilcox@microsoft.com>

This probably doubles the size of each item allocated by the test suite
but it lets us check a few more things, and may be needed for upcoming
API changes that require the caller pass in the order of the entry.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
---
tools/testing/radix-tree/multiorder.c | 2 +-
tools/testing/radix-tree/test.c | 29 +++++++++++++++++++----------
tools/testing/radix-tree/test.h | 6 +++---
3 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/tools/testing/radix-tree/multiorder.c b/tools/testing/radix-tree/multiorder.c
index d1be946..8d5865c 100644
--- a/tools/testing/radix-tree/multiorder.c
+++ b/tools/testing/radix-tree/multiorder.c
@@ -125,7 +125,7 @@ static void multiorder_check(unsigned long index, int order)
unsigned long min = index & ~((1UL << order) - 1);
unsigned long max = min + (1UL << order);
void **slot;
- struct item *item2 = item_create(min);
+ struct item *item2 = item_create(min, order);
RADIX_TREE(tree, GFP_KERNEL);

printf("Multiorder index %ld, order %d\n", index, order);
diff --git a/tools/testing/radix-tree/test.c b/tools/testing/radix-tree/test.c
index 6f8dafc..0de5489 100644
--- a/tools/testing/radix-tree/test.c
+++ b/tools/testing/radix-tree/test.c
@@ -24,21 +24,29 @@ int item_tag_get(struct radix_tree_root *root, unsigned long index, int tag)
return radix_tree_tag_get(root, index, tag);
}

-int __item_insert(struct radix_tree_root *root, struct item *item,
- unsigned order)
+int __item_insert(struct radix_tree_root *root, struct item *item)
{
- return __radix_tree_insert(root, item->index, order, item);
+ return __radix_tree_insert(root, item->index, item->order, item);
}

int item_insert(struct radix_tree_root *root, unsigned long index)
{
- return __item_insert(root, item_create(index), 0);
+ return __item_insert(root, item_create(index, 0));
}

int item_insert_order(struct radix_tree_root *root, unsigned long index,
unsigned order)
{
- return __item_insert(root, item_create(index), order);
+ return __item_insert(root, item_create(index, order));
+}
+
+void item_sanity(struct item *item, unsigned long index)
+{
+ unsigned long mask;
+ assert(!radix_tree_is_internal_node(item));
+ assert(item->order < BITS_PER_LONG);
+ mask = (1UL << item->order) - 1;
+ assert((item->index | mask) == (index | mask));
}

int item_delete(struct radix_tree_root *root, unsigned long index)
@@ -46,18 +54,19 @@ int item_delete(struct radix_tree_root *root, unsigned long index)
struct item *item = radix_tree_delete(root, index);

if (item) {
- assert(item->index == index);
+ item_sanity(item, index);
free(item);
return 1;
}
return 0;
}

-struct item *item_create(unsigned long index)
+struct item *item_create(unsigned long index, unsigned int order)
{
struct item *ret = malloc(sizeof(*ret));

ret->index = index;
+ ret->order = order;
return ret;
}

@@ -66,8 +75,8 @@ void item_check_present(struct radix_tree_root *root, unsigned long index)
struct item *item;

item = radix_tree_lookup(root, index);
- assert(item != 0);
- assert(item->index == index);
+ assert(item != NULL);
+ item_sanity(item, index);
}

struct item *item_lookup(struct radix_tree_root *root, unsigned long index)
@@ -80,7 +89,7 @@ void item_check_absent(struct radix_tree_root *root, unsigned long index)
struct item *item;

item = radix_tree_lookup(root, index);
- assert(item == 0);
+ assert(item == NULL);
}

/*
diff --git a/tools/testing/radix-tree/test.h b/tools/testing/radix-tree/test.h
index 215ab77..423c528 100644
--- a/tools/testing/radix-tree/test.h
+++ b/tools/testing/radix-tree/test.h
@@ -5,11 +5,11 @@

struct item {
unsigned long index;
+ unsigned int order;
};

-struct item *item_create(unsigned long index);
-int __item_insert(struct radix_tree_root *root, struct item *item,
- unsigned order);
+struct item *item_create(unsigned long index, unsigned int order);
+int __item_insert(struct radix_tree_root *root, struct item *item);
int item_insert(struct radix_tree_root *root, unsigned long index);
int item_insert_order(struct radix_tree_root *root, unsigned long index,
unsigned order);
--
2.10.2