xarray: Move multiorder account test in-kernel

Move this test to the in-kernel test suite, and enhance it to test
several different orders.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
This commit is contained in:
Matthew Wilcox
2018-08-28 16:13:16 -04:00
parent 47e0fab2b1
commit d6427f8179
2 changed files with 32 additions and 24 deletions

View File

@@ -1019,6 +1019,37 @@ static noinline void check_workingset(struct xarray *xa, unsigned long index)
XA_BUG_ON(xa, !xa_empty(xa));
}
/*
* Check that the pointer / value / sibling entries are accounted the
* way we expect them to be.
*/
static noinline void check_account(struct xarray *xa)
{
#ifdef CONFIG_XARRAY_MULTI
unsigned int order;
for (order = 1; order < 12; order++) {
XA_STATE(xas, xa, 1 << order);
xa_store_order(xa, 0, order, xa, GFP_KERNEL);
xas_load(&xas);
XA_BUG_ON(xa, xas.xa_node->count == 0);
XA_BUG_ON(xa, xas.xa_node->count > (1 << order));
XA_BUG_ON(xa, xas.xa_node->nr_values != 0);
xa_store_order(xa, 1 << order, order, xa_mk_value(1 << order),
GFP_KERNEL);
XA_BUG_ON(xa, xas.xa_node->count != xas.xa_node->nr_values * 2);
xa_erase(xa, 1 << order);
XA_BUG_ON(xa, xas.xa_node->nr_values != 0);
xa_erase(xa, 0);
XA_BUG_ON(xa, !xa_empty(xa));
}
#endif
}
static noinline void check_destroy(struct xarray *xa)
{
unsigned long index;
@@ -1068,6 +1099,7 @@ static int xarray_checks(void)
check_xa_alloc();
check_find(&array);
check_find_entry(&array);
check_account(&array);
check_destroy(&array);
check_move(&array);
check_create_range(&array);