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tools/testing/vma: add unit tests for vma_flags_[empty, diff_pair, and]()

PATCH In review Lorenzo Stoakes (Oracle) 1 participant 2 messages Mar 12 1 message not in the archive

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Lorenzo Stoakes (Oracle)

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PATCH 2/20 tools/testing/vma: add unit tests for vma_flags_[empty, diff_pair, and]()

Add VMA unit tests to assert that:

* vma_flags_empty()
* vma_flags_diff_pair()
* vma_flags_and_mask()
* vma_flags_and()

All function as expected.

In additional to the added tests, in order to make testing easier, add vma_flags_same_mask() and vma_flags_same() for testing only. If/when these are required in kernel code, they can be moved over.

Also add ASSERT_FLAGS_[NOT_]SAME[_MASK](), ASSERT_FLAGS_[NON]EMPTY() test helpers to make asserting flag state easier and more convenient.

Signed-off-by Lorenzo Stoakes (Oracle) <[email protected]>
---
 tools/testing/vma/include/custom.h |  12 +++
 tools/testing/vma/shared.h         |  18 ++++
 tools/testing/vma/tests/vma.c      | 137 +++++++++++++++++++++++++++++
 3 files changed, 167 insertions(+)
tools/testing/vma/include/custom.h +12 -0
index 833ff4d7f799..ce056e790817 100644
@@ -118,3 +118,15 @@ static __always_inline vma_flags_t __mk_vma_flags(size_t count,
 			vma_flags_set_flag(&flags, bits[i]);
 	return flags;
 }
+
+/* Place here until needed in the kernel code. */
+static __always_inline bool vma_flags_same_mask(vma_flags_t *flags,
+						vma_flags_t flags_other)
+{
+	const unsigned long *bitmap = flags->__vma_flags;
+	const unsigned long *bitmap_other = flags_other.__vma_flags;
+
+	return bitmap_equal(bitmap, bitmap_other, NUM_VMA_FLAG_BITS);
+}
+#define vma_flags_same(flags, ...) \
+	vma_flags_same_mask(flags, mk_vma_flags(__VA_ARGS__))
tools/testing/vma/shared.h +18 -0
index 6c64211cfa22..e2e5d6ef6bdd 100644
@@ -35,6 +35,24 @@
 #define ASSERT_EQ(_val1, _val2) ASSERT_TRUE((_val1) == (_val2))
 #define ASSERT_NE(_val1, _val2) ASSERT_TRUE((_val1) != (_val2))
 
+#define ASSERT_FLAGS_SAME_MASK(_flags, _flags_other) \
+	ASSERT_TRUE(vma_flags_same_mask((_flags), (_flags_other)))
+
+#define ASSERT_FLAGS_NOT_SAME_MASK(_flags, _flags_other) \
+	ASSERT_FALSE(vma_flags_same_mask((_flags), (_flags_other)))
+
+#define ASSERT_FLAGS_SAME(_flags, ...) \
+	ASSERT_TRUE(vma_flags_same(_flags, __VA_ARGS__))
+
+#define ASSERT_FLAGS_NOT_SAME(_flags, ...) \
+	ASSERT_FALSE(vma_flags_same(_flags, __VA_ARGS__))
+
+#define ASSERT_FLAGS_EMPTY(_flags) \
+	ASSERT_TRUE(vma_flags_empty(_flags))
+
+#define ASSERT_FLAGS_NONEMPTY(_flags) \
+	ASSERT_FALSE(vma_flags_empty(_flags))
+
 #define IS_SET(_val, _flags) ((_val & _flags) == _flags)
 
 extern bool fail_prealloc;
tools/testing/vma/tests/vma.c +137 -0

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