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authorMatthew Wilcox <willy@infradead.org>2018-09-09 01:52:17 -0400
committerMatthew Wilcox <willy@infradead.org>2018-10-21 10:46:46 -0400
commit4f06d6302da682157890f72c0573e12a73536814 (patch)
treead61fcd160cb757cf34f173f596c927885742af3 /lib
parent93eb07f72c8d86f8fe5e90907df1cc037f6ffbb7 (diff)
downloadlinux-4f06d6302da682157890f72c0573e12a73536814.tar.gz
xarray: Move multiorder_check to in-kernel tests
This version is a little less thorough in order to be a little quicker, but tests the important edge cases. Also test adding a multiorder entry at a non-canonical index, and erasing it. Signed-off-by: Matthew Wilcox <willy@infradead.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/test_xarray.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/lib/test_xarray.c b/lib/test_xarray.c
index ff94b54a926d..0f06a93b4d0e 100644
--- a/lib/test_xarray.c
+++ b/lib/test_xarray.c
@@ -422,6 +422,43 @@ static noinline void check_xas_erase(struct xarray *xa)
}
}
+#ifdef CONFIG_XARRAY_MULTI
+static noinline void check_multi_store_1(struct xarray *xa, unsigned long index,
+ unsigned int order)
+{
+ XA_STATE(xas, xa, index);
+ unsigned long min = index & ~((1UL << order) - 1);
+ unsigned long max = min + (1UL << order);
+
+ xa_store_order(xa, index, order, xa_mk_value(index), GFP_KERNEL);
+ XA_BUG_ON(xa, xa_load(xa, min) != xa_mk_value(index));
+ XA_BUG_ON(xa, xa_load(xa, max - 1) != xa_mk_value(index));
+ XA_BUG_ON(xa, xa_load(xa, max) != NULL);
+ XA_BUG_ON(xa, xa_load(xa, min - 1) != NULL);
+
+ XA_BUG_ON(xa, xas_store(&xas, xa_mk_value(min)) != xa_mk_value(index));
+ 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);
+ XA_BUG_ON(xa, xa_load(xa, min - 1) != NULL);
+
+ xa_erase_index(xa, min);
+ XA_BUG_ON(xa, !xa_empty(xa));
+}
+
+static noinline void check_multi_store_2(struct xarray *xa, unsigned long index,
+ unsigned int order)
+{
+ XA_STATE(xas, xa, index);
+ xa_store_order(xa, index, order, xa_mk_value(0), GFP_KERNEL);
+
+ 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));
+ XA_BUG_ON(xa, !xa_empty(xa));
+}
+#endif
+
static noinline void check_multi_store(struct xarray *xa)
{
#ifdef CONFIG_XARRAY_MULTI
@@ -487,6 +524,13 @@ static noinline void check_multi_store(struct xarray *xa)
XA_BUG_ON(xa, !xa_empty(xa));
}
}
+
+ for (i = 0; i < 20; i++) {
+ check_multi_store_1(xa, 200, i);
+ check_multi_store_1(xa, 0, i);
+ check_multi_store_1(xa, (1UL << i) + 1, i);
+ }
+ check_multi_store_2(xa, 4095, 9);
#endif
}