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| author | Matthew Wilcox <willy@infradead.org> | 2018-09-08 12:09:52 -0400 |
|---|---|---|
| committer | Matthew Wilcox <willy@infradead.org> | 2018-10-21 10:46:46 -0400 |
| commit | 93eb07f72c8d86f8fe5e90907df1cc037f6ffbb7 (patch) | |
| tree | 1770476c4ad43d7f1aeb730cf09aeba22c65d6f7 /lib | |
| parent | d6427f8179b5dd65eb468c61fc8cc24657c336c9 (diff) | |
| download | linux-93eb07f72c8d86f8fe5e90907df1cc037f6ffbb7.tar.gz | |
xarray: Move multiorder_shrink to kernel tests
Test this functionality inside the kernel as well as in userspace. Also remove insert_bug() as there's no comparable thing to test in the XArray code. Signed-off-by: Matthew Wilcox <willy@infradead.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/test_xarray.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/test_xarray.c b/lib/test_xarray.c index 38cab4ccb24e..ff94b54a926d 100644 --- a/lib/test_xarray.c +++ b/lib/test_xarray.c @@ -199,9 +199,25 @@ static noinline void check_xa_mark_1(struct xarray *xa, unsigned long index) xa_store_order(xa, index, order, xa_mk_value(index), GFP_KERNEL); for (i = base; i < next; i++) { + XA_STATE(xas, xa, i); + unsigned int seen = 0; + void *entry; + XA_BUG_ON(xa, !xa_get_mark(xa, i, XA_MARK_0)); XA_BUG_ON(xa, !xa_get_mark(xa, i, XA_MARK_1)); XA_BUG_ON(xa, xa_get_mark(xa, i, XA_MARK_2)); + + /* We should see two elements in the array */ + xas_for_each(&xas, entry, ULONG_MAX) + seen++; + XA_BUG_ON(xa, seen != 2); + + /* One of which is marked */ + xas_set(&xas, 0); + seen = 0; + xas_for_each_marked(&xas, entry, ULONG_MAX, XA_MARK_0) + seen++; + XA_BUG_ON(xa, seen != 1); } XA_BUG_ON(xa, xa_get_mark(xa, next, XA_MARK_0)); XA_BUG_ON(xa, xa_get_mark(xa, next, XA_MARK_1)); @@ -265,6 +281,8 @@ static noinline void check_xa_shrink(struct xarray *xa) { XA_STATE(xas, xa, 1); struct xa_node *node; + unsigned int order; + unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 15 : 1; XA_BUG_ON(xa, !xa_empty(xa)); XA_BUG_ON(xa, xa_store_index(xa, 0, GFP_KERNEL) != NULL); @@ -287,6 +305,25 @@ static noinline void check_xa_shrink(struct xarray *xa) XA_BUG_ON(xa, xa_load(xa, 0) != xa_mk_value(0)); xa_erase_index(xa, 0); XA_BUG_ON(xa, !xa_empty(xa)); + + for (order = 0; order < max_order; order++) { + unsigned long max = (1UL << order) - 1; + xa_store_order(xa, 0, order, xa_mk_value(0), GFP_KERNEL); + XA_BUG_ON(xa, xa_load(xa, max) != xa_mk_value(0)); + XA_BUG_ON(xa, xa_load(xa, max + 1) != NULL); + rcu_read_lock(); + node = xa_head(xa); + rcu_read_unlock(); + XA_BUG_ON(xa, xa_store_index(xa, ULONG_MAX, GFP_KERNEL) != + NULL); + rcu_read_lock(); + XA_BUG_ON(xa, xa_head(xa) == node); + rcu_read_unlock(); + XA_BUG_ON(xa, xa_load(xa, max + 1) != NULL); + xa_erase_index(xa, ULONG_MAX); + XA_BUG_ON(xa, xa->xa_head != node); + xa_erase_index(xa, 0); + } } static noinline void check_cmpxchg(struct xarray *xa) |