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Commit 12fd2aee authored by Matthew Wilcox's avatar Matthew Wilcox Committed by Matthew Wilcox (Oracle)
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XArray tests: Add check_insert 



A simple test which just checks that inserting an entry into an empty
array succeeds.  Try various different interesting indices.

Signed-off-by: default avatarMatthew Wilcox <willy@infradead.org>
parent 5c089fd0

lib/test_xarray.c

+38 −0
Original line number Diff line number Diff line
@@ -38,6 +38,12 @@ static void *xa_store_index(struct xarray *xa, unsigned long index, gfp_t gfp) 
	return xa_store(xa, index, xa_mk_index(index), gfp);

}



static void xa_insert_index(struct xarray *xa, unsigned long index)

{

	XA_BUG_ON(xa, xa_insert(xa, index, xa_mk_index(index),

				GFP_KERNEL) != 0);

}



static void xa_alloc_index(struct xarray *xa, unsigned long index, gfp_t gfp)

{

	u32 id;
@@ -338,6 +344,37 @@ static noinline void check_xa_shrink(struct xarray *xa) 
	}

}



static noinline void check_insert(struct xarray *xa)

{

	unsigned long i;



	for (i = 0; i < 1024; i++) {

		xa_insert_index(xa, i);

		XA_BUG_ON(xa, xa_load(xa, i - 1) != NULL);

		XA_BUG_ON(xa, xa_load(xa, i + 1) != NULL);

		xa_erase_index(xa, i);

	}



	for (i = 10; i < BITS_PER_LONG; i++) {

		xa_insert_index(xa, 1UL << i);

		XA_BUG_ON(xa, xa_load(xa, (1UL << i) - 1) != NULL);

		XA_BUG_ON(xa, xa_load(xa, (1UL << i) + 1) != NULL);

		xa_erase_index(xa, 1UL << i);



		xa_insert_index(xa, (1UL << i) - 1);

		XA_BUG_ON(xa, xa_load(xa, (1UL << i) - 2) != NULL);

		XA_BUG_ON(xa, xa_load(xa, 1UL << i) != NULL);

		xa_erase_index(xa, (1UL << i) - 1);

	}



	xa_insert_index(xa, ~0UL);

	XA_BUG_ON(xa, xa_load(xa, 0UL) != NULL);

	XA_BUG_ON(xa, xa_load(xa, ~1UL) != NULL);

	xa_erase_index(xa, ~0UL);



	XA_BUG_ON(xa, !xa_empty(xa));

}



static noinline void check_cmpxchg(struct xarray *xa)

{

	void *FIVE = xa_mk_value(5);
@@ -1527,6 +1564,7 @@ static int xarray_checks(void) 
	check_xa_mark(&array);

	check_xa_shrink(&array);

	check_xas_erase(&array);

	check_insert(&array);

	check_cmpxchg(&array);

	check_reserve(&array);

	check_reserve(&xa0);