redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

XArray tests: Add missing locking 

Lockdep caught me being sloppy in the test suite and failing to lock
the XArray appropriately.

Reported-by: kernel test robot <rong.a.chen@intel.com>
Signed-off-by: Matthew Wilcox <willy@infradead.org>
hifive-unleashed-5.1
Matthew Wilcox 2018-11-19 09:36:29 -05:00
parent 25bbe21bf4
commit fffc9a260e
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
lib/test_xarray.c
View File

@ -208,15 +208,19 @@ static noinline void check_xa_mark_1(struct xarray *xa, unsigned long index)
XA_BUG_ON(xa, xa_get_mark(xa, i, XA_MARK_2));
/* We should see two elements in the array */
rcu_read_lock();
xas_for_each(&xas, entry, ULONG_MAX)
seen++;
rcu_read_unlock();
XA_BUG_ON(xa, seen != 2);
/* One of which is marked */
xas_set(&xas, 0);
seen = 0;
rcu_read_lock();
xas_for_each_marked(&xas, entry, ULONG_MAX, XA_MARK_0)
seen++;
rcu_read_unlock();
XA_BUG_ON(xa, seen != 1);
}
XA_BUG_ON(xa, xa_get_mark(xa, next, XA_MARK_0));
@ -442,7 +446,9 @@ static noinline void check_multi_store_1(struct xarray *xa, unsigned long index,
XA_BUG_ON(xa, xa_load(xa, max) != NULL);
XA_BUG_ON(xa, xa_load(xa, min - 1) != NULL);
xas_lock(&xas);
XA_BUG_ON(xa, xas_store(&xas, xa_mk_value(min)) != xa_mk_value(index));
xas_unlock(&xas);
XA_BUG_ON(xa, xa_load(xa, min) != xa_mk_value(min));
XA_BUG_ON(xa, xa_load(xa, max - 1) != xa_mk_value(min));
XA_BUG_ON(xa, xa_load(xa, max) != NULL);
@ -458,9 +464,11 @@ static noinline void check_multi_store_2(struct xarray *xa, unsigned long index,
XA_STATE(xas, xa, index);
xa_store_order(xa, index, order, xa_mk_value(0), GFP_KERNEL);
xas_lock(&xas);
XA_BUG_ON(xa, xas_store(&xas, xa_mk_value(1)) != xa_mk_value(0));
XA_BUG_ON(xa, xas.xa_index != index);
XA_BUG_ON(xa, xas_store(&xas, NULL) != xa_mk_value(1));
xas_unlock(&xas);
XA_BUG_ON(xa, !xa_empty(xa));
}
#endif
@ -1180,10 +1188,12 @@ static noinline void check_account(struct xarray *xa)
XA_STATE(xas, xa, 1 << order);
xa_store_order(xa, 0, order, xa, GFP_KERNEL);
rcu_read_lock();
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);
rcu_read_unlock();
xa_store_order(xa, 1 << order, order, xa_mk_value(1 << order),
GFP_KERNEL);