diff options
Diffstat (limited to 'lib/test_xarray.c')
| -rw-r--r-- | lib/test_xarray.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/lib/test_xarray.c b/lib/test_xarray.c index 55c14e8c8859..d4f97925dbd8 100644 --- a/lib/test_xarray.c +++ b/lib/test_xarray.c @@ -12,6 +12,9 @@ static unsigned int tests_run; static unsigned int tests_passed; +static const unsigned int order_limit = + IS_ENABLED(CONFIG_XARRAY_MULTI) ? BITS_PER_LONG : 1; + #ifndef XA_DEBUG # ifdef __KERNEL__ void xa_dump(const struct xarray *xa) { } @@ -959,6 +962,20 @@ static noinline void check_multi_find_2(struct xarray *xa) } } +static noinline void check_multi_find_3(struct xarray *xa) +{ + unsigned int order; + + for (order = 5; order < order_limit; order++) { + unsigned long index = 1UL << (order - 5); + + XA_BUG_ON(xa, !xa_empty(xa)); + xa_store_order(xa, 0, order - 4, xa_mk_index(0), GFP_KERNEL); + XA_BUG_ON(xa, xa_find_after(xa, &index, ULONG_MAX, XA_PRESENT)); + xa_erase_index(xa, 0); + } +} + static noinline void check_find_1(struct xarray *xa) { unsigned long i, j, k; @@ -1081,6 +1098,7 @@ static noinline void check_find(struct xarray *xa) for (i = 2; i < 10; i++) check_multi_find_1(xa, i); check_multi_find_2(xa); + check_multi_find_3(xa); } /* See find_swap_entry() in mm/shmem.c */ @@ -1138,6 +1156,42 @@ static noinline void check_find_entry(struct xarray *xa) XA_BUG_ON(xa, !xa_empty(xa)); } +static noinline void check_pause(struct xarray *xa) +{ + XA_STATE(xas, xa, 0); + void *entry; + unsigned int order; + unsigned long index = 1; + unsigned int count = 0; + + for (order = 0; order < order_limit; order++) { + XA_BUG_ON(xa, xa_store_order(xa, index, order, + xa_mk_index(index), GFP_KERNEL)); + index += 1UL << order; + } + + rcu_read_lock(); + xas_for_each(&xas, entry, ULONG_MAX) { + XA_BUG_ON(xa, entry != xa_mk_index(1UL << count)); + count++; + } + rcu_read_unlock(); + XA_BUG_ON(xa, count != order_limit); + + count = 0; + xas_set(&xas, 0); + rcu_read_lock(); + xas_for_each(&xas, entry, ULONG_MAX) { + XA_BUG_ON(xa, entry != xa_mk_index(1UL << count)); + count++; + xas_pause(&xas); + } + rcu_read_unlock(); + XA_BUG_ON(xa, count != order_limit); + + xa_destroy(xa); +} + static noinline void check_move_tiny(struct xarray *xa) { XA_STATE(xas, xa, 0); @@ -1646,6 +1700,7 @@ static int xarray_checks(void) check_xa_alloc(); check_find(&array); check_find_entry(&array); + check_pause(&array); check_account(&array); check_destroy(&array); check_move(&array); |