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| author | Matthew Wilcox <willy@infradead.org> | 2019-03-10 04:25:27 +0100 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2019-06-03 05:00:24 +0200 |
| commit | 12fd2aee6db765ab4e97c4a37e6d1f6c10e74ee6 (patch) | |
| tree | ec159d887f87dac87abd4562b6cf4f78d0d620df /lib/test_xarray.c | |
| parent | idr: Fix idr_get_next race with idr_remove (diff) | |
| download | linux-12fd2aee6db765ab4e97c4a37e6d1f6c10e74ee6.tar.xz linux-12fd2aee6db765ab4e97c4a37e6d1f6c10e74ee6.zip | |
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: Matthew Wilcox <willy@infradead.org>
Diffstat (limited to 'lib/test_xarray.c')
| -rw-r--r-- | lib/test_xarray.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/lib/test_xarray.c b/lib/test_xarray.c index 5d4bad8bd96a..9d631a7b6a70 100644 --- a/lib/test_xarray.c +++ b/lib/test_xarray.c @@ -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); |