* Liam R. Howlett <Liam.Howlett@xxxxxxxxxx> [230407 23:17]:
> * Peng Zhang <zhangpeng.00@xxxxxxxxxxxxx> [230407 00:09]:
> > Add a test case to check whether the number of maple_alloc structures is
> > actually equal to mas->alloc->total.
>
> Please have a look at check_new_node() as there are tests there already
> and see if it covers what you are trying to test.
Sorry, sent this too fast. I'll have a look after the holiday here.
>
> >
> > Signed-off-by: Peng Zhang <zhangpeng.00@xxxxxxxxxxxxx>
> > ---
> > tools/testing/radix-tree/maple.c | 24 ++++++++++++++++++++++++
> > 1 file changed, 24 insertions(+)
> >
> > diff --git a/tools/testing/radix-tree/maple.c b/tools/testing/radix-tree/maple.c
> > index 958ee9bdb316..26389e0dcfff 100644
> > --- a/tools/testing/radix-tree/maple.c
> > +++ b/tools/testing/radix-tree/maple.c
> > @@ -55,6 +55,28 @@ struct rcu_reader_struct {
> > struct rcu_test_struct2 *test;
> > };
> >
> > +static int get_alloc_node_count(struct ma_state *mas)
> > +{
> > + int count = 1;
> > + struct maple_alloc *node = mas->alloc;
> > +
> > + if (!node || ((unsigned long)node & 0x1))
> > + return 0;
> > + while (node->node_count) {
> > + count += node->node_count;
> > + node = node->slot[0];
> > + }
> > + return count;
> > +}
> > +
> > +static void check_mas_alloc_node_count(struct ma_state *mas)
> > +{
> > + mas_node_count_gfp(mas, MAPLE_ALLOC_SLOTS + 1, GFP_KERNEL);
> > + mas_node_count_gfp(mas, MAPLE_ALLOC_SLOTS + 3, GFP_KERNEL);
> > + MT_BUG_ON(mas->tree, get_alloc_node_count(mas) != mas->alloc->total);
> > + mas_destroy(mas);
> > +}
> > +
> > /*
> > * check_new_node() - Check the creation of new nodes and error path
> > * verification.
> > @@ -69,6 +91,8 @@ static noinline void check_new_node(struct maple_tree *mt)
> >
> > MA_STATE(mas, mt, 0, 0);
> >
> > + check_mas_alloc_node_count(&mas);
> > +
> > /* Try allocating 3 nodes */
> > mtree_lock(mt);
> > mt_set_non_kernel(0);
> > --
> > 2.20.1
> >
