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Date: Thu, 30 Jul 2020 16:45:27 -0700
From: Brendan Higgins <brendanhiggins@...gle.com>
To: Vitor Massaru Iha <vitor@...saru.org>
Cc: Matthew Wilcox <willy@...radead.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Changbin Du <changbin.du@...el.com>,
Masahiro Yamada <yamada.masahiro@...ionext.com>,
Randy Dunlap <rdunlap@...radead.org>,
Shuah Khan <skhan@...uxfoundation.org>,
David Gow <davidgow@...gle.com>,
linux-fsdevel <linux-fsdevel@...r.kernel.org>,
"open list:KERNEL SELFTEST FRAMEWORK"
<linux-kselftest@...r.kernel.org>,
KUnit Development <kunit-dev@...glegroups.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Alan Maguire <alan.maguire@...cle.com>
Subject: Re: [RFC v1] xarray: start converting test_xarray to KUnit
On Wed, Feb 12, 2020 at 12:29 AM Alan Maguire <alan.maguire@...cle.com> wrote:
This kind of fell off my todo list - sorry about that. But Vitor has
been doing a bunch of related work, so I thought it might be good to
resurrect this thread and add him to it.
> On Thu, 6 Feb 2020, Brendan Higgins wrote:
>
> > xarray predates KUnit; however, it would be good to get all unit tests
> > in the kernel implemented using the same framework.
> >
> > This initial conversion is a bit hacky as it doesn't switch everything
> > over to the KUnit semantics; however, it does break out the test cases
> > as KUnit test cases, and calls KUNIT_FAIL() when XA_BUG_ON() fails. So
> > the test does now take advantage of now reporting using the TAP format.
> >
> > The reason I didn't convert everything over the KUnit semantics is that
> > I didn't want to get too far into this before getting some feedback from
> > Willy. I don't think there is anything I have made worse with the
> > changes I have made so far; this also at least serves as a starting
> > point.
> >
>
> Looks great to me from a KUnit perspective! A few comments below which
> aren't as much directed to this code as more generally, so
>
> Reviewed-by: Alan Maguire <alan.maguire@...cle.com>
>
> > TODO:
> > - Convert tests to use KUnit semantics.
> > - Figured out what to do with tools/testing/radix-tree/ xarray stuff.
> >
> > Signed-off-by: Brendan Higgins <brendanhiggins@...gle.com>
> > ---
> > include/linux/xarray.h | 2 +-
> > lib/Kconfig.debug | 1 +
> > lib/test_xarray.c | 1228 +++++++++++++++++++++-------------------
> > lib/xarray.c | 4 +-
> > 4 files changed, 658 insertions(+), 577 deletions(-)
> >
> > diff --git a/include/linux/xarray.h b/include/linux/xarray.h
> > index f73e1775ded01..85cded5fd7917 100644
> > --- a/include/linux/xarray.h
> > +++ b/include/linux/xarray.h
> > @@ -1140,7 +1140,7 @@ struct xa_node {
> > void xa_dump(const struct xarray *);
> > void xa_dump_node(const struct xa_node *);
> >
> > -#ifdef XA_DEBUG
> > +#ifdef CONFIG_TEST_XARRAY
> > #define XA_BUG_ON(xa, x) do { \
> > if (x) { \
> > xa_dump(xa); \
> > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
> > index 69def4a9df009..aa51269fb34f3 100644
> > --- a/lib/Kconfig.debug
> > +++ b/lib/Kconfig.debug
> > @@ -1893,6 +1893,7 @@ config TEST_UUID
> >
> > config TEST_XARRAY
> > tristate "Test the XArray code at runtime"
> > + depends on KUNIT
> >
>
> Probably obvious, but one thing we should try and do if/when
> the full KUnit conversion occurs is to ensure the description of the
> config variable mentions KUnit (since the name can't contain KUNIT
> for legacy test suites). Do you have a list of other potential target
> tests for KUnit conversion? Perhaps we could maintain it if so in the
> docs if so - coverting existing tests might be a good way for
> people to kick the KUnit tyres...
>
> > config TEST_OVERFLOW
> > tristate "Test check_*_overflow() functions at runtime"
> > diff --git a/lib/test_xarray.c b/lib/test_xarray.c
> > index 55c14e8c88591..6c4c545f7858d 100644
> > --- a/lib/test_xarray.c
> > +++ b/lib/test_xarray.c
> > @@ -8,26 +8,16 @@
> >
> > #include <linux/xarray.h>
> > #include <linux/module.h>
> > +#include <kunit/test.h>
> >
> > -static unsigned int tests_run;
> > -static unsigned int tests_passed;
> > -
> > -#ifndef XA_DEBUG
> > -# ifdef __KERNEL__
> > -void xa_dump(const struct xarray *xa) { }
> > -# endif
> > #undef XA_BUG_ON
> > -#define XA_BUG_ON(xa, x) do { \
> > - tests_run++; \
> > +#define XA_BUG_ON(test, xa, x) do { \
> > if (x) { \
> > - printk("BUG at %s:%d\n", __func__, __LINE__); \
> > + KUNIT_FAIL(test, ""); \
>
> So if I'm tracing the defintions correctly, I _think_ KUNIT_FAIL
> for a failure case will ultimately result in us calling
> complete_and_exit(), shutting the kernel down. I'm not sure if
> we want that here, and more generally to be honest, especially
> outside of the UML use case. The concept of assertion versus
> expecation is valuable, but I wonder if we could have the assertion
> failure do something less drastic? My (perhaps wrong?) understanding
> is that for an expectation failure, the test drives on while noting it
> (and ultimately showing a failure) while for an assertion fail the test
> case terminates immediately. If that's right, maybe we could tweak
> things for the assertion fail definition to "return" in the test case
> body instead?
>
> Thanks!
>
> Alan
> > xa_dump(xa); \
> > dump_stack(); \
> > - } else { \
> > - tests_passed++; \
> > } \
> > } while (0)
> > -#endif
> >
> > static void *xa_mk_index(unsigned long index)
> > {
> > @@ -39,25 +29,32 @@ 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)
> > +static void xa_insert_index(struct kunit *test,
> > + struct xarray *xa,
> > + unsigned long index)
> > {
> > - XA_BUG_ON(xa, xa_insert(xa, index, xa_mk_index(index),
> > + XA_BUG_ON(test, 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)
> > +static void xa_alloc_index(struct kunit *test,
> > + struct xarray *xa,
> > + unsigned long index,
> > + gfp_t gfp)
> > {
> > u32 id;
> >
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(index), xa_limit_32b,
> > + XA_BUG_ON(test, xa, xa_alloc(xa, &id, xa_mk_index(index), xa_limit_32b,
> > gfp) != 0);
> > - XA_BUG_ON(xa, id != index);
> > + XA_BUG_ON(test, xa, id != index);
> > }
> >
> > -static void xa_erase_index(struct xarray *xa, unsigned long index)
> > +static void xa_erase_index(struct kunit *test,
> > + struct xarray *xa,
> > + unsigned long index)
> > {
> > - XA_BUG_ON(xa, xa_erase(xa, index) != xa_mk_index(index));
> > - XA_BUG_ON(xa, xa_load(xa, index) != NULL);
> > + XA_BUG_ON(test, xa, xa_erase(xa, index) != xa_mk_index(index));
> > + XA_BUG_ON(test, xa, xa_load(xa, index) != NULL);
> > }
> >
> > /*
> > @@ -80,24 +77,31 @@ static void *xa_store_order(struct xarray *xa, unsigned long index,
> > return curr;
> > }
> >
> > -static noinline void check_xa_err(struct xarray *xa)
> > +static noinline void check_xa_err(struct kunit *test)
> > {
> > - XA_BUG_ON(xa, xa_err(xa_store_index(xa, 0, GFP_NOWAIT)) != 0);
> > - XA_BUG_ON(xa, xa_err(xa_erase(xa, 0)) != 0);
> > + struct xarray *xa = test->priv;
> > +
> > + XA_BUG_ON(test, xa, xa_err(xa_store_index(xa, 0, GFP_NOWAIT)) != 0);
> > + XA_BUG_ON(test, xa, xa_err(xa_erase(xa, 0)) != 0);
> > #ifndef __KERNEL__
> > /* The kernel does not fail GFP_NOWAIT allocations */
> > - XA_BUG_ON(xa, xa_err(xa_store_index(xa, 1, GFP_NOWAIT)) != -ENOMEM);
> > - XA_BUG_ON(xa, xa_err(xa_store_index(xa, 1, GFP_NOWAIT)) != -ENOMEM);
> > + XA_BUG_ON(test, xa,
> > + xa_err(xa_store_index(xa, 1, GFP_NOWAIT)) != -ENOMEM);
> > + XA_BUG_ON(test,
> > + xa, xa_err(xa_store_index(xa, 1, GFP_NOWAIT)) != -ENOMEM);
> > #endif
> > - XA_BUG_ON(xa, xa_err(xa_store_index(xa, 1, GFP_KERNEL)) != 0);
> > - XA_BUG_ON(xa, xa_err(xa_store(xa, 1, xa_mk_value(0), GFP_KERNEL)) != 0);
> > - XA_BUG_ON(xa, xa_err(xa_erase(xa, 1)) != 0);
> > + XA_BUG_ON(test, xa, xa_err(xa_store_index(xa, 1, GFP_KERNEL)) != 0);
> > + XA_BUG_ON(test, xa,
> > + xa_err(xa_store(xa, 1, xa_mk_value(0), GFP_KERNEL)) != 0);
> > + XA_BUG_ON(test, xa, xa_err(xa_erase(xa, 1)) != 0);
> > // kills the test-suite :-(
> > -// XA_BUG_ON(xa, xa_err(xa_store(xa, 0, xa_mk_internal(0), 0)) != -EINVAL);
> > +// XA_BUG_ON(test, xa,
> > +// xa_err(xa_store(xa, 0, xa_mk_internal(0), 0)) != -EINVAL);
> > }
> >
> > -static noinline void check_xas_retry(struct xarray *xa)
> > +static noinline void check_xas_retry(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > XA_STATE(xas, xa, 0);
> > void *entry;
> >
> > @@ -105,23 +109,23 @@ static noinline void check_xas_retry(struct xarray *xa)
> > xa_store_index(xa, 1, GFP_KERNEL);
> >
> > rcu_read_lock();
> > - XA_BUG_ON(xa, xas_find(&xas, ULONG_MAX) != xa_mk_value(0));
> > - xa_erase_index(xa, 1);
> > - XA_BUG_ON(xa, !xa_is_retry(xas_reload(&xas)));
> > - XA_BUG_ON(xa, xas_retry(&xas, NULL));
> > - XA_BUG_ON(xa, xas_retry(&xas, xa_mk_value(0)));
> > + XA_BUG_ON(test, xa, xas_find(&xas, ULONG_MAX) != xa_mk_value(0));
> > + xa_erase_index(test, xa, 1);
> > + XA_BUG_ON(test, xa, !xa_is_retry(xas_reload(&xas)));
> > + XA_BUG_ON(test, xa, xas_retry(&xas, NULL));
> > + XA_BUG_ON(test, xa, xas_retry(&xas, xa_mk_value(0)));
> > xas_reset(&xas);
> > - XA_BUG_ON(xa, xas.xa_node != XAS_RESTART);
> > - XA_BUG_ON(xa, xas_next_entry(&xas, ULONG_MAX) != xa_mk_value(0));
> > - XA_BUG_ON(xa, xas.xa_node != NULL);
> > + XA_BUG_ON(test, xa, xas.xa_node != XAS_RESTART);
> > + XA_BUG_ON(test, xa, xas_next_entry(&xas, ULONG_MAX) != xa_mk_value(0));
> > + XA_BUG_ON(test, xa, xas.xa_node != NULL);
> > rcu_read_unlock();
> >
> > - XA_BUG_ON(xa, xa_store_index(xa, 1, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa, xa_store_index(xa, 1, GFP_KERNEL) != NULL);
> >
> > rcu_read_lock();
> > - XA_BUG_ON(xa, !xa_is_internal(xas_reload(&xas)));
> > + XA_BUG_ON(test, xa, !xa_is_internal(xas_reload(&xas)));
> > xas.xa_node = XAS_RESTART;
> > - XA_BUG_ON(xa, xas_next_entry(&xas, ULONG_MAX) != xa_mk_value(0));
> > + XA_BUG_ON(test, xa, xas_next_entry(&xas, ULONG_MAX) != xa_mk_value(0));
> > rcu_read_unlock();
> >
> > /* Make sure we can iterate through retry entries */
> > @@ -137,64 +141,67 @@ static noinline void check_xas_retry(struct xarray *xa)
> > }
> > xas_unlock(&xas);
> >
> > - xa_erase_index(xa, 0);
> > - xa_erase_index(xa, 1);
> > + xa_erase_index(test, xa, 0);
> > + xa_erase_index(test, xa, 1);
> > }
> >
> > -static noinline void check_xa_load(struct xarray *xa)
> > +static noinline void check_xa_load(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > unsigned long i, j;
> >
> > for (i = 0; i < 1024; i++) {
> > for (j = 0; j < 1024; j++) {
> > void *entry = xa_load(xa, j);
> > if (j < i)
> > - XA_BUG_ON(xa, xa_to_value(entry) != j);
> > + XA_BUG_ON(test, xa, xa_to_value(entry) != j);
> > else
> > - XA_BUG_ON(xa, entry);
> > + XA_BUG_ON(test, xa, entry);
> > }
> > - XA_BUG_ON(xa, xa_store_index(xa, i, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa, xa_store_index(xa, i, GFP_KERNEL) != NULL);
> > }
> >
> > for (i = 0; i < 1024; i++) {
> > for (j = 0; j < 1024; j++) {
> > void *entry = xa_load(xa, j);
> > if (j >= i)
> > - XA_BUG_ON(xa, xa_to_value(entry) != j);
> > + XA_BUG_ON(test, xa, xa_to_value(entry) != j);
> > else
> > - XA_BUG_ON(xa, entry);
> > + XA_BUG_ON(test, xa, entry);
> > }
> > - xa_erase_index(xa, i);
> > + xa_erase_index(test, xa, i);
> > }
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_xa_mark_1(struct xarray *xa, unsigned long index)
> > +static noinline void check_xa_mark_1(struct kunit *test,
> > + struct xarray *xa,
> > + unsigned long index)
> > {
> > unsigned int order;
> > unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 8 : 1;
> >
> > /* NULL elements have no marks set */
> > - XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_0));
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, index, XA_MARK_0));
> > xa_set_mark(xa, index, XA_MARK_0);
> > - XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_0));
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, index, XA_MARK_0));
> >
> > /* Storing a pointer will not make a mark appear */
> > - XA_BUG_ON(xa, xa_store_index(xa, index, GFP_KERNEL) != NULL);
> > - XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_0));
> > + XA_BUG_ON(test, xa, xa_store_index(xa, index, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, index, XA_MARK_0));
> > xa_set_mark(xa, index, XA_MARK_0);
> > - XA_BUG_ON(xa, !xa_get_mark(xa, index, XA_MARK_0));
> > + XA_BUG_ON(test, xa, !xa_get_mark(xa, index, XA_MARK_0));
> >
> > /* Setting one mark will not set another mark */
> > - XA_BUG_ON(xa, xa_get_mark(xa, index + 1, XA_MARK_0));
> > - XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_1));
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, index + 1, XA_MARK_0));
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, index, XA_MARK_1));
> >
> > /* Storing NULL clears marks, and they can't be set again */
> > - xa_erase_index(xa, index);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > - XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_0));
> > + xa_erase_index(test, xa, index);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, index, XA_MARK_0));
> > xa_set_mark(xa, index, XA_MARK_0);
> > - XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_0));
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, index, XA_MARK_0));
> >
> > /*
> > * Storing a multi-index entry over entries with marks gives the
> > @@ -206,11 +213,11 @@ static noinline void check_xa_mark_1(struct xarray *xa, unsigned long index)
> > unsigned long next = base + (1UL << order);
> > unsigned long i;
> >
> > - XA_BUG_ON(xa, xa_store_index(xa, index + 1, GFP_KERNEL));
> > + XA_BUG_ON(test, xa, xa_store_index(xa, index + 1, GFP_KERNEL));
> > xa_set_mark(xa, index + 1, XA_MARK_0);
> > - XA_BUG_ON(xa, xa_store_index(xa, index + 2, GFP_KERNEL));
> > + XA_BUG_ON(test, xa, xa_store_index(xa, index + 2, GFP_KERNEL));
> > xa_set_mark(xa, index + 2, XA_MARK_2);
> > - XA_BUG_ON(xa, xa_store_index(xa, next, GFP_KERNEL));
> > + XA_BUG_ON(test, xa, xa_store_index(xa, next, GFP_KERNEL));
> > xa_store_order(xa, index, order, xa_mk_index(index),
> > GFP_KERNEL);
> > for (i = base; i < next; i++) {
> > @@ -218,16 +225,16 @@ static noinline void check_xa_mark_1(struct xarray *xa, unsigned long index)
> > unsigned int seen = 0;
> > void *entry;
> >
> > - XA_BUG_ON(xa, !xa_get_mark(xa, i, XA_MARK_0));
> > - XA_BUG_ON(xa, xa_get_mark(xa, i, XA_MARK_1));
> > - XA_BUG_ON(xa, !xa_get_mark(xa, i, XA_MARK_2));
> > + XA_BUG_ON(test, xa, !xa_get_mark(xa, i, XA_MARK_0));
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, i, XA_MARK_1));
> > + XA_BUG_ON(test, xa, !xa_get_mark(xa, i, XA_MARK_2));
> >
> > /* We should see two elements in the array */
> > rcu_read_lock();
> > xas_for_each(&xas, entry, ULONG_MAX)
> > seen++;
> > rcu_read_unlock();
> > - XA_BUG_ON(xa, seen != 2);
> > + XA_BUG_ON(test, xa, seen != 2);
> >
> > /* One of which is marked */
> > xas_set(&xas, 0);
> > @@ -236,19 +243,19 @@ static noinline void check_xa_mark_1(struct xarray *xa, unsigned long index)
> > xas_for_each_marked(&xas, entry, ULONG_MAX, XA_MARK_0)
> > seen++;
> > rcu_read_unlock();
> > - XA_BUG_ON(xa, seen != 1);
> > + XA_BUG_ON(test, xa, seen != 1);
> > }
> > - XA_BUG_ON(xa, xa_get_mark(xa, next, XA_MARK_0));
> > - XA_BUG_ON(xa, xa_get_mark(xa, next, XA_MARK_1));
> > - XA_BUG_ON(xa, xa_get_mark(xa, next, XA_MARK_2));
> > - xa_erase_index(xa, index);
> > - xa_erase_index(xa, next);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, next, XA_MARK_0));
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, next, XA_MARK_1));
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, next, XA_MARK_2));
> > + xa_erase_index(test, xa, index);
> > + xa_erase_index(test, xa, next);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_xa_mark_2(struct xarray *xa)
> > +static noinline void check_xa_mark_2(struct kunit *test, struct xarray *xa)
> > {
> > XA_STATE(xas, xa, 0);
> > unsigned long index;
> > @@ -261,7 +268,7 @@ static noinline void check_xa_mark_2(struct xarray *xa)
> > xas_load(&xas);
> > xas_init_marks(&xas);
> > xas_unlock(&xas);
> > - XA_BUG_ON(xa, !xa_get_mark(xa, 0, XA_MARK_0) == 0);
> > + XA_BUG_ON(test, xa, !xa_get_mark(xa, 0, XA_MARK_0) == 0);
> >
> > for (index = 3500; index < 4500; index++) {
> > xa_store_index(xa, index, GFP_KERNEL);
> > @@ -273,196 +280,213 @@ static noinline void check_xa_mark_2(struct xarray *xa)
> > xas_for_each_marked(&xas, entry, ULONG_MAX, XA_MARK_0)
> > count++;
> > rcu_read_unlock();
> > - XA_BUG_ON(xa, count != 1000);
> > + XA_BUG_ON(test, xa, count != 1000);
> >
> > xas_lock(&xas);
> > xas_for_each(&xas, entry, ULONG_MAX) {
> > xas_init_marks(&xas);
> > - XA_BUG_ON(xa, !xa_get_mark(xa, xas.xa_index, XA_MARK_0));
> > - XA_BUG_ON(xa, !xas_get_mark(&xas, XA_MARK_0));
> > + XA_BUG_ON(test, xa, !xa_get_mark(xa, xas.xa_index, XA_MARK_0));
> > + XA_BUG_ON(test, xa, !xas_get_mark(&xas, XA_MARK_0));
> > }
> > xas_unlock(&xas);
> >
> > xa_destroy(xa);
> > }
> >
> > -static noinline void check_xa_mark(struct xarray *xa)
> > +static noinline void check_xa_mark(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > unsigned long index;
> >
> > for (index = 0; index < 16384; index += 4)
> > - check_xa_mark_1(xa, index);
> > + check_xa_mark_1(test, xa, index);
> >
> > - check_xa_mark_2(xa);
> > + check_xa_mark_2(test, xa);
> > }
> >
> > -static noinline void check_xa_shrink(struct xarray *xa)
> > +static noinline void check_xa_shrink(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > XA_STATE(xas, xa, 1);
> > struct xa_node *node;
> > unsigned int order;
> > unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 15 : 1;
> >
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > - XA_BUG_ON(xa, xa_store_index(xa, 0, GFP_KERNEL) != NULL);
> > - XA_BUG_ON(xa, xa_store_index(xa, 1, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_store_index(xa, 0, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa, xa_store_index(xa, 1, GFP_KERNEL) != NULL);
> >
> > /*
> > * Check that erasing the entry at 1 shrinks the tree and properly
> > * marks the node as being deleted.
> > */
> > xas_lock(&xas);
> > - XA_BUG_ON(xa, xas_load(&xas) != xa_mk_value(1));
> > + XA_BUG_ON(test, xa, xas_load(&xas) != xa_mk_value(1));
> > node = xas.xa_node;
> > - XA_BUG_ON(xa, xa_entry_locked(xa, node, 0) != xa_mk_value(0));
> > - XA_BUG_ON(xa, xas_store(&xas, NULL) != xa_mk_value(1));
> > - XA_BUG_ON(xa, xa_load(xa, 1) != NULL);
> > - XA_BUG_ON(xa, xas.xa_node != XAS_BOUNDS);
> > - XA_BUG_ON(xa, xa_entry_locked(xa, node, 0) != XA_RETRY_ENTRY);
> > - XA_BUG_ON(xa, xas_load(&xas) != NULL);
> > + XA_BUG_ON(test, xa, xa_entry_locked(xa, node, 0) != xa_mk_value(0));
> > + XA_BUG_ON(test, xa, xas_store(&xas, NULL) != xa_mk_value(1));
> > + XA_BUG_ON(test, xa, xa_load(xa, 1) != NULL);
> > + XA_BUG_ON(test, xa, xas.xa_node != XAS_BOUNDS);
> > + XA_BUG_ON(test, xa, xa_entry_locked(xa, node, 0) != XA_RETRY_ENTRY);
> > + XA_BUG_ON(test, xa, xas_load(&xas) != NULL);
> > xas_unlock(&xas);
> > - XA_BUG_ON(xa, xa_load(xa, 0) != xa_mk_value(0));
> > - xa_erase_index(xa, 0);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_load(xa, 0) != xa_mk_value(0));
> > + xa_erase_index(test, xa, 0);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > for (order = 0; order < max_order; order++) {
> > unsigned long max = (1UL << order) - 1;
> > xa_store_order(xa, 0, order, xa_mk_value(0), GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_load(xa, max) != xa_mk_value(0));
> > - XA_BUG_ON(xa, xa_load(xa, max + 1) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, max) != xa_mk_value(0));
> > + XA_BUG_ON(test, xa, xa_load(xa, max + 1) != NULL);
> > rcu_read_lock();
> > node = xa_head(xa);
> > rcu_read_unlock();
> > - XA_BUG_ON(xa, xa_store_index(xa, ULONG_MAX, GFP_KERNEL) !=
> > + XA_BUG_ON(test, xa, xa_store_index(xa, ULONG_MAX, GFP_KERNEL) !=
> > NULL);
> > rcu_read_lock();
> > - XA_BUG_ON(xa, xa_head(xa) == node);
> > + XA_BUG_ON(test, xa, xa_head(xa) == node);
> > rcu_read_unlock();
> > - XA_BUG_ON(xa, xa_load(xa, max + 1) != NULL);
> > - xa_erase_index(xa, ULONG_MAX);
> > - XA_BUG_ON(xa, xa->xa_head != node);
> > - xa_erase_index(xa, 0);
> > + XA_BUG_ON(test, xa, xa_load(xa, max + 1) != NULL);
> > + xa_erase_index(test, xa, ULONG_MAX);
> > + XA_BUG_ON(test, xa, xa->xa_head != node);
> > + xa_erase_index(test, xa, 0);
> > }
> > }
> >
> > -static noinline void check_insert(struct xarray *xa)
> > +static noinline void check_insert(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > 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);
> > + xa_insert_index(test, xa, i);
> > + XA_BUG_ON(test, xa, xa_load(xa, i - 1) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, i + 1) != NULL);
> > + xa_erase_index(test, 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(test, xa, 1UL << i);
> > + XA_BUG_ON(test, xa, xa_load(xa, (1UL << i) - 1) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, (1UL << i) + 1) != NULL);
> > + xa_erase_index(test, xa, 1UL << i);
> > +
> > + xa_insert_index(test, xa, (1UL << i) - 1);
> > + XA_BUG_ON(test, xa, xa_load(xa, (1UL << i) - 2) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, 1UL << i) != NULL);
> > + xa_erase_index(test, 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_insert_index(test, xa, ~0UL);
> > + XA_BUG_ON(test, xa, xa_load(xa, 0UL) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, ~1UL) != NULL);
> > + xa_erase_index(test, xa, ~0UL);
> >
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_cmpxchg(struct xarray *xa)
> > +static noinline void check_cmpxchg(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > void *FIVE = xa_mk_value(5);
> > void *SIX = xa_mk_value(6);
> > void *LOTS = xa_mk_value(12345678);
> >
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > - XA_BUG_ON(xa, xa_store_index(xa, 12345678, GFP_KERNEL) != NULL);
> > - XA_BUG_ON(xa, xa_insert(xa, 12345678, xa, GFP_KERNEL) != -EBUSY);
> > - XA_BUG_ON(xa, xa_cmpxchg(xa, 12345678, SIX, FIVE, GFP_KERNEL) != LOTS);
> > - XA_BUG_ON(xa, xa_cmpxchg(xa, 12345678, LOTS, FIVE, GFP_KERNEL) != LOTS);
> > - XA_BUG_ON(xa, xa_cmpxchg(xa, 12345678, FIVE, LOTS, GFP_KERNEL) != FIVE);
> > - XA_BUG_ON(xa, xa_cmpxchg(xa, 5, FIVE, NULL, GFP_KERNEL) != NULL);
> > - XA_BUG_ON(xa, xa_cmpxchg(xa, 5, NULL, FIVE, GFP_KERNEL) != NULL);
> > - xa_erase_index(xa, 12345678);
> > - xa_erase_index(xa, 5);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_store_index(xa, 12345678, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa, xa_insert(xa, 12345678, xa, GFP_KERNEL) != -EBUSY);
> > + XA_BUG_ON(test, xa,
> > + xa_cmpxchg(xa, 12345678, SIX, FIVE, GFP_KERNEL) != LOTS);
> > + XA_BUG_ON(test, xa,
> > + xa_cmpxchg(xa, 12345678, LOTS, FIVE, GFP_KERNEL) != LOTS);
> > + XA_BUG_ON(test, xa,
> > + xa_cmpxchg(xa, 12345678, FIVE, LOTS, GFP_KERNEL) != FIVE);
> > + XA_BUG_ON(test, xa, xa_cmpxchg(xa, 5, FIVE, NULL, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa, xa_cmpxchg(xa, 5, NULL, FIVE, GFP_KERNEL) != NULL);
> > + xa_erase_index(test, xa, 12345678);
> > + xa_erase_index(test, xa, 5);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_reserve(struct xarray *xa)
> > +static noinline void check_reserve(struct kunit *test, struct xarray *xa)
> > {
> > void *entry;
> > unsigned long index;
> > int count;
> >
> > /* An array with a reserved entry is not empty */
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > - XA_BUG_ON(xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, xa_empty(xa));
> > - XA_BUG_ON(xa, xa_load(xa, 12345678));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
> > + XA_BUG_ON(test, xa, xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_load(xa, 12345678));
> > xa_release(xa, 12345678);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > /* Releasing a used entry does nothing */
> > - XA_BUG_ON(xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, xa_store_index(xa, 12345678, GFP_NOWAIT) != NULL);
> > + XA_BUG_ON(test, xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
> > + XA_BUG_ON(test, xa, xa_store_index(xa, 12345678, GFP_NOWAIT) != NULL);
> > xa_release(xa, 12345678);
> > - xa_erase_index(xa, 12345678);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, 12345678);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > /* cmpxchg sees a reserved entry as ZERO */
> > - XA_BUG_ON(xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, xa_cmpxchg(xa, 12345678, XA_ZERO_ENTRY,
> > + XA_BUG_ON(test, xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
> > + XA_BUG_ON(test, xa, xa_cmpxchg(xa, 12345678, XA_ZERO_ENTRY,
> > xa_mk_value(12345678), GFP_NOWAIT) != NULL);
> > xa_release(xa, 12345678);
> > - xa_erase_index(xa, 12345678);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, 12345678);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > /* xa_insert treats it as busy */
> > - XA_BUG_ON(xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, xa_insert(xa, 12345678, xa_mk_value(12345678), 0) !=
> > + XA_BUG_ON(test, xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
> > + XA_BUG_ON(test, xa, xa_insert(xa, 12345678, xa_mk_value(12345678), 0) !=
> > -EBUSY);
> > - XA_BUG_ON(xa, xa_empty(xa));
> > - XA_BUG_ON(xa, xa_erase(xa, 12345678) != NULL);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_erase(xa, 12345678) != NULL);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > /* Can iterate through a reserved entry */
> > xa_store_index(xa, 5, GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_reserve(xa, 6, GFP_KERNEL) != 0);
> > + XA_BUG_ON(test, xa, xa_reserve(xa, 6, GFP_KERNEL) != 0);
> > xa_store_index(xa, 7, GFP_KERNEL);
> >
> > count = 0;
> > xa_for_each(xa, index, entry) {
> > - XA_BUG_ON(xa, index != 5 && index != 7);
> > + XA_BUG_ON(test, xa, index != 5 && index != 7);
> > count++;
> > }
> > - XA_BUG_ON(xa, count != 2);
> > + XA_BUG_ON(test, xa, count != 2);
> >
> > /* If we free a reserved entry, we should be able to allocate it */
> > if (xa->xa_flags & XA_FLAGS_ALLOC) {
> > u32 id;
> >
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_value(8),
> > + XA_BUG_ON(test, xa, xa_alloc(xa, &id, xa_mk_value(8),
> > XA_LIMIT(5, 10), GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != 8);
> > + XA_BUG_ON(test, xa, id != 8);
> >
> > xa_release(xa, 6);
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_value(6),
> > + XA_BUG_ON(test, xa, xa_alloc(xa, &id, xa_mk_value(6),
> > XA_LIMIT(5, 10), GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != 6);
> > + XA_BUG_ON(test, xa, id != 6);
> > }
> >
> > xa_destroy(xa);
> > }
> >
> > -static noinline void check_xas_erase(struct xarray *xa)
> > +static void check_reserve_all(struct kunit *test)
> > +{
> > + struct xarray *xa = test->priv;
> > + DEFINE_XARRAY_ALLOC(xa0);
> > +
> > + check_reserve(test, xa);
> > + check_reserve(test, &xa0);
> > +}
> > +
> > +static noinline void check_xas_erase(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > XA_STATE(xas, xa, 0);
> > void *entry;
> > unsigned long i, j;
> > @@ -490,12 +514,12 @@ static noinline void check_xas_erase(struct xarray *xa)
> > xas_set(&xas, 0);
> > j = i;
> > xas_for_each(&xas, entry, ULONG_MAX) {
> > - XA_BUG_ON(xa, entry != xa_mk_index(j));
> > + XA_BUG_ON(test, xa, entry != xa_mk_index(j));
> > xas_store(&xas, NULL);
> > j++;
> > }
> > xas_unlock(&xas);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> > }
> >
> > @@ -508,21 +532,22 @@ static noinline void check_multi_store_1(struct xarray *xa, unsigned long index,
> > unsigned long max = min + (1UL << order);
> >
> > xa_store_order(xa, index, order, xa_mk_index(index), GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_load(xa, min) != xa_mk_index(index));
> > - XA_BUG_ON(xa, xa_load(xa, max - 1) != xa_mk_index(index));
> > - XA_BUG_ON(xa, xa_load(xa, max) != NULL);
> > - XA_BUG_ON(xa, xa_load(xa, min - 1) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, min) != xa_mk_index(index));
> > + XA_BUG_ON(test, xa, xa_load(xa, max - 1) != xa_mk_index(index));
> > + XA_BUG_ON(test, xa, xa_load(xa, max) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, min - 1) != NULL);
> >
> > xas_lock(&xas);
> > - XA_BUG_ON(xa, xas_store(&xas, xa_mk_index(min)) != xa_mk_index(index));
> > + XA_BUG_ON(test, xa,
> > + xas_store(&xas, xa_mk_index(min)) != xa_mk_index(index));
> > xas_unlock(&xas);
> > - XA_BUG_ON(xa, xa_load(xa, min) != xa_mk_index(min));
> > - XA_BUG_ON(xa, xa_load(xa, max - 1) != xa_mk_index(min));
> > - XA_BUG_ON(xa, xa_load(xa, max) != NULL);
> > - XA_BUG_ON(xa, xa_load(xa, min - 1) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, min) != xa_mk_index(min));
> > + XA_BUG_ON(test, xa, xa_load(xa, max - 1) != xa_mk_index(min));
> > + XA_BUG_ON(test, xa, xa_load(xa, max) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, min - 1) != NULL);
> >
> > - xa_erase_index(xa, min);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, min);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > static noinline void check_multi_store_2(struct xarray *xa, unsigned long index,
> > @@ -532,11 +557,11 @@ static noinline void check_multi_store_2(struct xarray *xa, unsigned long index,
> > xa_store_order(xa, index, order, xa_mk_value(0), GFP_KERNEL);
> >
> > xas_lock(&xas);
> > - 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(test, xa, xas_store(&xas, xa_mk_value(1)) != xa_mk_value(0));
> > + XA_BUG_ON(test, xa, xas.xa_index != index);
> > + XA_BUG_ON(test, xa, xas_store(&xas, NULL) != xa_mk_value(1));
> > xas_unlock(&xas);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > static noinline void check_multi_store_3(struct xarray *xa, unsigned long index,
> > @@ -550,69 +575,70 @@ static noinline void check_multi_store_3(struct xarray *xa, unsigned long index,
> >
> > xas_lock(&xas);
> > xas_for_each(&xas, entry, ULONG_MAX) {
> > - XA_BUG_ON(xa, entry != xa_mk_index(index));
> > + XA_BUG_ON(test, xa, entry != xa_mk_index(index));
> > n++;
> > }
> > - XA_BUG_ON(xa, n != 1);
> > + XA_BUG_ON(test, xa, n != 1);
> > xas_set(&xas, index + 1);
> > xas_for_each(&xas, entry, ULONG_MAX) {
> > - XA_BUG_ON(xa, entry != xa_mk_index(index));
> > + XA_BUG_ON(test, xa, entry != xa_mk_index(index));
> > n++;
> > }
> > - XA_BUG_ON(xa, n != 2);
> > + XA_BUG_ON(test, xa, n != 2);
> > xas_unlock(&xas);
> >
> > xa_destroy(xa);
> > }
> > #endif
> >
> > -static noinline void check_multi_store(struct xarray *xa)
> > +static noinline void check_multi_store(struct kunit *test)
> > {
> > #ifdef CONFIG_XARRAY_MULTI
> > + struct xarray *xa = test->priv;
> > unsigned long i, j, k;
> > unsigned int max_order = (sizeof(long) == 4) ? 30 : 60;
> >
> > /* Loading from any position returns the same value */
> > xa_store_order(xa, 0, 1, xa_mk_value(0), GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_load(xa, 0) != xa_mk_value(0));
> > - XA_BUG_ON(xa, xa_load(xa, 1) != xa_mk_value(0));
> > - XA_BUG_ON(xa, xa_load(xa, 2) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, 0) != xa_mk_value(0));
> > + XA_BUG_ON(test, xa, xa_load(xa, 1) != xa_mk_value(0));
> > + XA_BUG_ON(test, xa, xa_load(xa, 2) != NULL);
> > rcu_read_lock();
> > - XA_BUG_ON(xa, xa_to_node(xa_head(xa))->count != 2);
> > - XA_BUG_ON(xa, xa_to_node(xa_head(xa))->nr_values != 2);
> > + XA_BUG_ON(test, xa, xa_to_node(xa_head(xa))->count != 2);
> > + XA_BUG_ON(test, xa, xa_to_node(xa_head(xa))->nr_values != 2);
> > rcu_read_unlock();
> >
> > /* Storing adjacent to the value does not alter the value */
> > xa_store(xa, 3, xa, GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_load(xa, 0) != xa_mk_value(0));
> > - XA_BUG_ON(xa, xa_load(xa, 1) != xa_mk_value(0));
> > - XA_BUG_ON(xa, xa_load(xa, 2) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, 0) != xa_mk_value(0));
> > + XA_BUG_ON(test, xa, xa_load(xa, 1) != xa_mk_value(0));
> > + XA_BUG_ON(test, xa, xa_load(xa, 2) != NULL);
> > rcu_read_lock();
> > - XA_BUG_ON(xa, xa_to_node(xa_head(xa))->count != 3);
> > - XA_BUG_ON(xa, xa_to_node(xa_head(xa))->nr_values != 2);
> > + XA_BUG_ON(test, xa, xa_to_node(xa_head(xa))->count != 3);
> > + XA_BUG_ON(test, xa, xa_to_node(xa_head(xa))->nr_values != 2);
> > rcu_read_unlock();
> >
> > /* Overwriting multiple indexes works */
> > xa_store_order(xa, 0, 2, xa_mk_value(1), GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_load(xa, 0) != xa_mk_value(1));
> > - XA_BUG_ON(xa, xa_load(xa, 1) != xa_mk_value(1));
> > - XA_BUG_ON(xa, xa_load(xa, 2) != xa_mk_value(1));
> > - XA_BUG_ON(xa, xa_load(xa, 3) != xa_mk_value(1));
> > - XA_BUG_ON(xa, xa_load(xa, 4) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, 0) != xa_mk_value(1));
> > + XA_BUG_ON(test, xa, xa_load(xa, 1) != xa_mk_value(1));
> > + XA_BUG_ON(test, xa, xa_load(xa, 2) != xa_mk_value(1));
> > + XA_BUG_ON(test, xa, xa_load(xa, 3) != xa_mk_value(1));
> > + XA_BUG_ON(test, xa, xa_load(xa, 4) != NULL);
> > rcu_read_lock();
> > - XA_BUG_ON(xa, xa_to_node(xa_head(xa))->count != 4);
> > - XA_BUG_ON(xa, xa_to_node(xa_head(xa))->nr_values != 4);
> > + XA_BUG_ON(test, xa, xa_to_node(xa_head(xa))->count != 4);
> > + XA_BUG_ON(test, xa, xa_to_node(xa_head(xa))->nr_values != 4);
> > rcu_read_unlock();
> >
> > /* We can erase multiple values with a single store */
> > xa_store_order(xa, 0, BITS_PER_LONG - 1, NULL, GFP_KERNEL);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > /* Even when the first slot is empty but the others aren't */
> > xa_store_index(xa, 1, GFP_KERNEL);
> > xa_store_index(xa, 2, GFP_KERNEL);
> > xa_store_order(xa, 0, 2, NULL, GFP_KERNEL);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > for (i = 0; i < max_order; i++) {
> > for (j = 0; j < max_order; j++) {
> > @@ -622,13 +648,14 @@ static noinline void check_multi_store(struct xarray *xa)
> > for (k = 0; k < max_order; k++) {
> > void *entry = xa_load(xa, (1UL << k) - 1);
> > if ((i < k) && (j < k))
> > - XA_BUG_ON(xa, entry != NULL);
> > + XA_BUG_ON(test, xa, entry != NULL);
> > else
> > - XA_BUG_ON(xa, entry != xa_mk_index(j));
> > + XA_BUG_ON(test,
> > + xa, entry != xa_mk_index(j));
> > }
> >
> > xa_erase(xa, 0);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> > }
> >
> > @@ -646,133 +673,142 @@ static noinline void check_multi_store(struct xarray *xa)
> > #endif
> > }
> >
> > -static noinline void check_xa_alloc_1(struct xarray *xa, unsigned int base)
> > +static noinline void check_xa_alloc_1(struct kunit *test, struct xarray *xa,
> > + unsigned int base)
> > {
> > int i;
> > u32 id;
> >
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > /* An empty array should assign %base to the first alloc */
> > - xa_alloc_index(xa, base, GFP_KERNEL);
> > + xa_alloc_index(test, xa, base, GFP_KERNEL);
> >
> > /* Erasing it should make the array empty again */
> > - xa_erase_index(xa, base);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, base);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > /* And it should assign %base again */
> > - xa_alloc_index(xa, base, GFP_KERNEL);
> > + xa_alloc_index(test, xa, base, GFP_KERNEL);
> >
> > /* Allocating and then erasing a lot should not lose base */
> > for (i = base + 1; i < 2 * XA_CHUNK_SIZE; i++)
> > - xa_alloc_index(xa, i, GFP_KERNEL);
> > + xa_alloc_index(test, xa, i, GFP_KERNEL);
> > for (i = base; i < 2 * XA_CHUNK_SIZE; i++)
> > - xa_erase_index(xa, i);
> > - xa_alloc_index(xa, base, GFP_KERNEL);
> > + xa_erase_index(test, xa, i);
> > + xa_alloc_index(test, xa, base, GFP_KERNEL);
> >
> > /* Destroying the array should do the same as erasing */
> > xa_destroy(xa);
> >
> > /* And it should assign %base again */
> > - xa_alloc_index(xa, base, GFP_KERNEL);
> > + xa_alloc_index(test, xa, base, GFP_KERNEL);
> >
> > /* The next assigned ID should be base+1 */
> > - xa_alloc_index(xa, base + 1, GFP_KERNEL);
> > - xa_erase_index(xa, base + 1);
> > + xa_alloc_index(test, xa, base + 1, GFP_KERNEL);
> > + xa_erase_index(test, xa, base + 1);
> >
> > /* Storing a value should mark it used */
> > xa_store_index(xa, base + 1, GFP_KERNEL);
> > - xa_alloc_index(xa, base + 2, GFP_KERNEL);
> > + xa_alloc_index(test, xa, base + 2, GFP_KERNEL);
> >
> > /* If we then erase base, it should be free */
> > - xa_erase_index(xa, base);
> > - xa_alloc_index(xa, base, GFP_KERNEL);
> > + xa_erase_index(test, xa, base);
> > + xa_alloc_index(test, xa, base, GFP_KERNEL);
> >
> > - xa_erase_index(xa, base + 1);
> > - xa_erase_index(xa, base + 2);
> > + xa_erase_index(test, xa, base + 1);
> > + xa_erase_index(test, xa, base + 2);
> >
> > for (i = 1; i < 5000; i++) {
> > - xa_alloc_index(xa, base + i, GFP_KERNEL);
> > + xa_alloc_index(test, xa, base + i, GFP_KERNEL);
> > }
> >
> > xa_destroy(xa);
> >
> > /* Check that we fail properly at the limit of allocation */
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(UINT_MAX - 1),
> > + XA_BUG_ON(test, xa, xa_alloc(xa, &id, xa_mk_index(UINT_MAX - 1),
> > XA_LIMIT(UINT_MAX - 1, UINT_MAX),
> > GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != 0xfffffffeU);
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(UINT_MAX),
> > + XA_BUG_ON(test, xa, id != 0xfffffffeU);
> > + XA_BUG_ON(test, xa, xa_alloc(xa, &id, xa_mk_index(UINT_MAX),
> > XA_LIMIT(UINT_MAX - 1, UINT_MAX),
> > GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != 0xffffffffU);
> > + XA_BUG_ON(test, xa, id != 0xffffffffU);
> > id = 3;
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(0),
> > + XA_BUG_ON(test, xa, xa_alloc(xa, &id, xa_mk_index(0),
> > XA_LIMIT(UINT_MAX - 1, UINT_MAX),
> > GFP_KERNEL) != -EBUSY);
> > - XA_BUG_ON(xa, id != 3);
> > + XA_BUG_ON(test, xa, id != 3);
> > xa_destroy(xa);
> >
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(10), XA_LIMIT(10, 5),
> > + XA_BUG_ON(test, xa, xa_alloc(xa, &id, xa_mk_index(10), XA_LIMIT(10, 5),
> > GFP_KERNEL) != -EBUSY);
> > - XA_BUG_ON(xa, xa_store_index(xa, 3, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(10), XA_LIMIT(10, 5),
> > + XA_BUG_ON(test, xa, xa_store_index(xa, 3, GFP_KERNEL) != 0);
> > + XA_BUG_ON(test, xa, xa_alloc(xa, &id, xa_mk_index(10), XA_LIMIT(10, 5),
> > GFP_KERNEL) != -EBUSY);
> > - xa_erase_index(xa, 3);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, 3);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_xa_alloc_2(struct xarray *xa, unsigned int base)
> > +static noinline void check_xa_alloc_2(struct kunit *test, struct xarray *xa,
> > + unsigned int base)
> > {
> > unsigned int i, id;
> > unsigned long index;
> > void *entry;
> >
> > /* Allocate and free a NULL and check xa_empty() behaves */
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, NULL, xa_limit_32b, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != base);
> > - XA_BUG_ON(xa, xa_empty(xa));
> > - XA_BUG_ON(xa, xa_erase(xa, id) != NULL);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa,
> > + xa_alloc(xa, &id, NULL, xa_limit_32b, GFP_KERNEL) != 0);
> > + XA_BUG_ON(test, xa, id != base);
> > + XA_BUG_ON(test, xa, xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_erase(xa, id) != NULL);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > /* Ditto, but check destroy instead of erase */
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, NULL, xa_limit_32b, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != base);
> > - XA_BUG_ON(xa, xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa,
> > + xa_alloc(xa, &id, NULL, xa_limit_32b, GFP_KERNEL) != 0);
> > + XA_BUG_ON(test, xa, id != base);
> > + XA_BUG_ON(test, xa, xa_empty(xa));
> > xa_destroy(xa);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > for (i = base; i < base + 10; i++) {
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, NULL, xa_limit_32b,
> > + XA_BUG_ON(test, xa, xa_alloc(xa, &id, NULL, xa_limit_32b,
> > GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != i);
> > + XA_BUG_ON(test, xa, id != i);
> > }
> >
> > - XA_BUG_ON(xa, xa_store(xa, 3, xa_mk_index(3), GFP_KERNEL) != NULL);
> > - XA_BUG_ON(xa, xa_store(xa, 4, xa_mk_index(4), GFP_KERNEL) != NULL);
> > - XA_BUG_ON(xa, xa_store(xa, 4, NULL, GFP_KERNEL) != xa_mk_index(4));
> > - XA_BUG_ON(xa, xa_erase(xa, 5) != NULL);
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, NULL, xa_limit_32b, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != 5);
> > + XA_BUG_ON(test, xa,
> > + xa_store(xa, 3, xa_mk_index(3), GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa,
> > + xa_store(xa, 4, xa_mk_index(4), GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa,
> > + xa_store(xa, 4, NULL, GFP_KERNEL) != xa_mk_index(4));
> > + XA_BUG_ON(test, xa, xa_erase(xa, 5) != NULL);
> > + XA_BUG_ON(test, xa,
> > + xa_alloc(xa, &id, NULL, xa_limit_32b, GFP_KERNEL) != 0);
> > + XA_BUG_ON(test, xa, id != 5);
> >
> > xa_for_each(xa, index, entry) {
> > - xa_erase_index(xa, index);
> > + xa_erase_index(test, xa, index);
> > }
> >
> > for (i = base; i < base + 9; i++) {
> > - XA_BUG_ON(xa, xa_erase(xa, i) != NULL);
> > - XA_BUG_ON(xa, xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_erase(xa, i) != NULL);
> > + XA_BUG_ON(test, xa, xa_empty(xa));
> > }
> > - XA_BUG_ON(xa, xa_erase(xa, 8) != NULL);
> > - XA_BUG_ON(xa, xa_empty(xa));
> > - XA_BUG_ON(xa, xa_erase(xa, base + 9) != NULL);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_erase(xa, 8) != NULL);
> > + XA_BUG_ON(test, xa, xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_erase(xa, base + 9) != NULL);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > xa_destroy(xa);
> > }
> >
> > -static noinline void check_xa_alloc_3(struct xarray *xa, unsigned int base)
> > +static noinline void check_xa_alloc_3(struct kunit *test, struct xarray *xa,
> > + unsigned int base)
> > {
> > struct xa_limit limit = XA_LIMIT(1, 0x3fff);
> > u32 next = 0;
> > @@ -780,64 +816,67 @@ static noinline void check_xa_alloc_3(struct xarray *xa, unsigned int base)
> > unsigned long index;
> > void *entry;
> >
> > - XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, xa_mk_index(1), limit,
> > + XA_BUG_ON(test, xa, xa_alloc_cyclic(xa, &id, xa_mk_index(1), limit,
> > &next, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != 1);
> > + XA_BUG_ON(test, xa, id != 1);
> >
> > next = 0x3ffd;
> > - XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, xa_mk_index(0x3ffd), limit,
> > + XA_BUG_ON(test, xa, xa_alloc_cyclic(xa, &id, xa_mk_index(0x3ffd), limit,
> > &next, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != 0x3ffd);
> > - xa_erase_index(xa, 0x3ffd);
> > - xa_erase_index(xa, 1);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, id != 0x3ffd);
> > + xa_erase_index(test, xa, 0x3ffd);
> > + xa_erase_index(test, xa, 1);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > for (i = 0x3ffe; i < 0x4003; i++) {
> > if (i < 0x4000)
> > entry = xa_mk_index(i);
> > else
> > entry = xa_mk_index(i - 0x3fff);
> > - XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, entry, limit,
> > + XA_BUG_ON(test, xa, xa_alloc_cyclic(xa, &id, entry, limit,
> > &next, GFP_KERNEL) != (id == 1));
> > - XA_BUG_ON(xa, xa_mk_index(id) != entry);
> > + XA_BUG_ON(test, xa, xa_mk_index(id) != entry);
> > }
> >
> > /* Check wrap-around is handled correctly */
> > if (base != 0)
> > - xa_erase_index(xa, base);
> > - xa_erase_index(xa, base + 1);
> > + xa_erase_index(test, xa, base);
> > + xa_erase_index(test, xa, base + 1);
> > next = UINT_MAX;
> > - XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, xa_mk_index(UINT_MAX),
> > + XA_BUG_ON(test, xa, xa_alloc_cyclic(xa, &id, xa_mk_index(UINT_MAX),
> > xa_limit_32b, &next, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != UINT_MAX);
> > - XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, xa_mk_index(base),
> > + XA_BUG_ON(test, xa, id != UINT_MAX);
> > + XA_BUG_ON(test, xa, xa_alloc_cyclic(xa, &id, xa_mk_index(base),
> > xa_limit_32b, &next, GFP_KERNEL) != 1);
> > - XA_BUG_ON(xa, id != base);
> > - XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, xa_mk_index(base + 1),
> > + XA_BUG_ON(test, xa, id != base);
> > + XA_BUG_ON(test, xa, xa_alloc_cyclic(xa, &id, xa_mk_index(base + 1),
> > xa_limit_32b, &next, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != base + 1);
> > + XA_BUG_ON(test, xa, id != base + 1);
> >
> > xa_for_each(xa, index, entry)
> > - xa_erase_index(xa, index);
> > + xa_erase_index(test, xa, index);
> >
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static DEFINE_XARRAY_ALLOC(xa0);
> > -static DEFINE_XARRAY_ALLOC1(xa1);
> > -
> > -static noinline void check_xa_alloc(void)
> > +static noinline void check_xa_alloc(struct kunit *test)
> > {
> > - check_xa_alloc_1(&xa0, 0);
> > - check_xa_alloc_1(&xa1, 1);
> > - check_xa_alloc_2(&xa0, 0);
> > - check_xa_alloc_2(&xa1, 1);
> > - check_xa_alloc_3(&xa0, 0);
> > - check_xa_alloc_3(&xa1, 1);
> > + DEFINE_XARRAY_ALLOC(xa0);
> > + DEFINE_XARRAY_ALLOC1(xa1);
> > +
> > + check_xa_alloc_1(test, &xa0, 0);
> > + check_xa_alloc_1(test, &xa1, 1);
> > + check_xa_alloc_2(test, &xa0, 0);
> > + check_xa_alloc_2(test, &xa1, 1);
> > + check_xa_alloc_3(test, &xa0, 0);
> > + check_xa_alloc_3(test, &xa1, 1);
> > }
> >
> > -static noinline void __check_store_iter(struct xarray *xa, unsigned long start,
> > - unsigned int order, unsigned int present)
> > +static noinline void __check_store_iter(struct kunit *test,
> > + struct xarray *xa,
> > + unsigned long start,
> > + unsigned int order,
> > + unsigned int present)
> > {
> > XA_STATE_ORDER(xas, xa, start, order);
> > void *entry;
> > @@ -846,9 +885,10 @@ static noinline void __check_store_iter(struct xarray *xa, unsigned long start,
> > retry:
> > xas_lock(&xas);
> > xas_for_each_conflict(&xas, entry) {
> > - XA_BUG_ON(xa, !xa_is_value(entry));
> > - XA_BUG_ON(xa, entry < xa_mk_index(start));
> > - XA_BUG_ON(xa, entry > xa_mk_index(start + (1UL << order) - 1));
> > + XA_BUG_ON(test, xa, !xa_is_value(entry));
> > + XA_BUG_ON(test, xa, entry < xa_mk_index(start));
> > + XA_BUG_ON(test,
> > + xa, entry > xa_mk_index(start + (1UL << order) - 1));
> > count++;
> > }
> > xas_store(&xas, xa_mk_index(start));
> > @@ -857,53 +897,55 @@ static noinline void __check_store_iter(struct xarray *xa, unsigned long start,
> > count = 0;
> > goto retry;
> > }
> > - XA_BUG_ON(xa, xas_error(&xas));
> > - XA_BUG_ON(xa, count != present);
> > - XA_BUG_ON(xa, xa_load(xa, start) != xa_mk_index(start));
> > - XA_BUG_ON(xa, xa_load(xa, start + (1UL << order) - 1) !=
> > + XA_BUG_ON(test, xa, xas_error(&xas));
> > + XA_BUG_ON(test, xa, count != present);
> > + XA_BUG_ON(test, xa, xa_load(xa, start) != xa_mk_index(start));
> > + XA_BUG_ON(test, xa, xa_load(xa, start + (1UL << order) - 1) !=
> > xa_mk_index(start));
> > - xa_erase_index(xa, start);
> > + xa_erase_index(test, xa, start);
> > }
> >
> > -static noinline void check_store_iter(struct xarray *xa)
> > +static noinline void check_store_iter(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > unsigned int i, j;
> > unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 20 : 1;
> >
> > for (i = 0; i < max_order; i++) {
> > unsigned int min = 1 << i;
> > unsigned int max = (2 << i) - 1;
> > - __check_store_iter(xa, 0, i, 0);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > - __check_store_iter(xa, min, i, 0);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + __check_store_iter(test, xa, 0, i, 0);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > + __check_store_iter(test, xa, min, i, 0);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > xa_store_index(xa, min, GFP_KERNEL);
> > - __check_store_iter(xa, min, i, 1);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + __check_store_iter(test, xa, min, i, 1);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > xa_store_index(xa, max, GFP_KERNEL);
> > - __check_store_iter(xa, min, i, 1);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + __check_store_iter(test, xa, min, i, 1);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > for (j = 0; j < min; j++)
> > xa_store_index(xa, j, GFP_KERNEL);
> > - __check_store_iter(xa, 0, i, min);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + __check_store_iter(test, xa, 0, i, min);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > for (j = 0; j < min; j++)
> > xa_store_index(xa, min + j, GFP_KERNEL);
> > - __check_store_iter(xa, min, i, min);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + __check_store_iter(test, xa, min, i, min);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> > #ifdef CONFIG_XARRAY_MULTI
> > xa_store_index(xa, 63, GFP_KERNEL);
> > xa_store_index(xa, 65, GFP_KERNEL);
> > __check_store_iter(xa, 64, 2, 1);
> > - xa_erase_index(xa, 63);
> > + xa_erase_index(test, xa, 63);
> > #endif
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_multi_find_1(struct xarray *xa, unsigned order)
> > +static noinline void check_multi_find_1(struct kunit *test, struct xarray *xa,
> > + unsigned int order)
> > {
> > #ifdef CONFIG_XARRAY_MULTI
> > unsigned long multi = 3 << order;
> > @@ -911,31 +953,32 @@ static noinline void check_multi_find_1(struct xarray *xa, unsigned order)
> > unsigned long index;
> >
> > xa_store_order(xa, multi, order, xa_mk_value(multi), GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_store_index(xa, next, GFP_KERNEL) != NULL);
> > - XA_BUG_ON(xa, xa_store_index(xa, next + 1, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa, xa_store_index(xa, next, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa, xa_store_index(xa, next + 1, GFP_KERNEL) != NULL);
> >
> > index = 0;
> > - XA_BUG_ON(xa, xa_find(xa, &index, ULONG_MAX, XA_PRESENT) !=
> > + XA_BUG_ON(test, xa, xa_find(xa, &index, ULONG_MAX, XA_PRESENT) !=
> > xa_mk_value(multi));
> > - XA_BUG_ON(xa, index != multi);
> > + XA_BUG_ON(test, xa, index != multi);
> > index = multi + 1;
> > - XA_BUG_ON(xa, xa_find(xa, &index, ULONG_MAX, XA_PRESENT) !=
> > + XA_BUG_ON(test, xa, xa_find(xa, &index, ULONG_MAX, XA_PRESENT) !=
> > xa_mk_value(multi));
> > - XA_BUG_ON(xa, (index < multi) || (index >= next));
> > - XA_BUG_ON(xa, xa_find_after(xa, &index, ULONG_MAX, XA_PRESENT) !=
> > + XA_BUG_ON(test, xa, (index < multi) || (index >= next));
> > + XA_BUG_ON(test, xa, xa_find_after(xa, &index, ULONG_MAX, XA_PRESENT) !=
> > xa_mk_value(next));
> > - XA_BUG_ON(xa, index != next);
> > - XA_BUG_ON(xa, xa_find_after(xa, &index, next, XA_PRESENT) != NULL);
> > - XA_BUG_ON(xa, index != next);
> > -
> > - xa_erase_index(xa, multi);
> > - xa_erase_index(xa, next);
> > - xa_erase_index(xa, next + 1);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, index != next);
> > + XA_BUG_ON(test, xa,
> > + xa_find_after(xa, &index, next, XA_PRESENT) != NULL);
> > + XA_BUG_ON(test, xa, index != next);
> > +
> > + xa_erase_index(test, xa, multi);
> > + xa_erase_index(test, xa, next);
> > + xa_erase_index(test, xa, next + 1);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > #endif
> > }
> >
> > -static noinline void check_multi_find_2(struct xarray *xa)
> > +static noinline void check_multi_find_2(struct kunit *test, struct xarray *xa)
> > {
> > unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 10 : 1;
> > unsigned int i, j;
> > @@ -950,30 +993,30 @@ static noinline void check_multi_find_2(struct xarray *xa)
> > GFP_KERNEL);
> > rcu_read_lock();
> > xas_for_each(&xas, entry, ULONG_MAX) {
> > - xa_erase_index(xa, index);
> > + xa_erase_index(test, xa, index);
> > }
> > rcu_read_unlock();
> > - xa_erase_index(xa, index - 1);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, index - 1);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> > }
> > }
> >
> > -static noinline void check_find_1(struct xarray *xa)
> > +static noinline void check_find_1(struct kunit *test, struct xarray *xa)
> > {
> > unsigned long i, j, k;
> >
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > /*
> > * Check xa_find with all pairs between 0 and 99 inclusive,
> > * starting at every index between 0 and 99
> > */
> > for (i = 0; i < 100; i++) {
> > - XA_BUG_ON(xa, xa_store_index(xa, i, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa, xa_store_index(xa, i, GFP_KERNEL) != NULL);
> > xa_set_mark(xa, i, XA_MARK_0);
> > for (j = 0; j < i; j++) {
> > - XA_BUG_ON(xa, xa_store_index(xa, j, GFP_KERNEL) !=
> > + XA_BUG_ON(test, xa, xa_store_index(xa, j, GFP_KERNEL) !=
> > NULL);
> > xa_set_mark(xa, j, XA_MARK_0);
> > for (k = 0; k < 100; k++) {
> > @@ -981,54 +1024,54 @@ static noinline void check_find_1(struct xarray *xa)
> > void *entry = xa_find(xa, &index, ULONG_MAX,
> > XA_PRESENT);
> > if (k <= j)
> > - XA_BUG_ON(xa, index != j);
> > + XA_BUG_ON(test, xa, index != j);
> > else if (k <= i)
> > - XA_BUG_ON(xa, index != i);
> > + XA_BUG_ON(test, xa, index != i);
> > else
> > - XA_BUG_ON(xa, entry != NULL);
> > + XA_BUG_ON(test, xa, entry != NULL);
> >
> > index = k;
> > entry = xa_find(xa, &index, ULONG_MAX,
> > XA_MARK_0);
> > if (k <= j)
> > - XA_BUG_ON(xa, index != j);
> > + XA_BUG_ON(test, xa, index != j);
> > else if (k <= i)
> > - XA_BUG_ON(xa, index != i);
> > + XA_BUG_ON(test, xa, index != i);
> > else
> > - XA_BUG_ON(xa, entry != NULL);
> > + XA_BUG_ON(test, xa, entry != NULL);
> > }
> > - xa_erase_index(xa, j);
> > - XA_BUG_ON(xa, xa_get_mark(xa, j, XA_MARK_0));
> > - XA_BUG_ON(xa, !xa_get_mark(xa, i, XA_MARK_0));
> > + xa_erase_index(test, xa, j);
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, j, XA_MARK_0));
> > + XA_BUG_ON(test, xa, !xa_get_mark(xa, i, XA_MARK_0));
> > }
> > - xa_erase_index(xa, i);
> > - XA_BUG_ON(xa, xa_get_mark(xa, i, XA_MARK_0));
> > + xa_erase_index(test, xa, i);
> > + XA_BUG_ON(test, xa, xa_get_mark(xa, i, XA_MARK_0));
> > }
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_find_2(struct xarray *xa)
> > +static noinline void check_find_2(struct kunit *test, struct xarray *xa)
> > {
> > void *entry;
> > unsigned long i, j, index;
> >
> > xa_for_each(xa, index, entry) {
> > - XA_BUG_ON(xa, true);
> > + XA_BUG_ON(test, xa, true);
> > }
> >
> > for (i = 0; i < 1024; i++) {
> > xa_store_index(xa, index, GFP_KERNEL);
> > j = 0;
> > xa_for_each(xa, index, entry) {
> > - XA_BUG_ON(xa, xa_mk_index(index) != entry);
> > - XA_BUG_ON(xa, index != j++);
> > + XA_BUG_ON(test, xa, xa_mk_index(index) != entry);
> > + XA_BUG_ON(test, xa, index != j++);
> > }
> > }
> >
> > xa_destroy(xa);
> > }
> >
> > -static noinline void check_find_3(struct xarray *xa)
> > +static noinline void check_find_3(struct kunit *test, struct xarray *xa)
> > {
> > XA_STATE(xas, xa, 0);
> > unsigned long i, j, k;
> > @@ -1042,7 +1085,7 @@ static noinline void check_find_3(struct xarray *xa)
> > xas_for_each_marked(&xas, entry, k, XA_MARK_0)
> > ;
> > if (j > k)
> > - XA_BUG_ON(xa,
> > + XA_BUG_ON(test, xa,
> > xas.xa_node != XAS_RESTART);
> > }
> > rcu_read_unlock();
> > @@ -1053,7 +1096,7 @@ static noinline void check_find_3(struct xarray *xa)
> > xa_destroy(xa);
> > }
> >
> > -static noinline void check_find_4(struct xarray *xa)
> > +static noinline void check_find_4(struct kunit *test, struct xarray *xa)
> > {
> > unsigned long index = 0;
> > void *entry;
> > @@ -1061,26 +1104,27 @@ static noinline void check_find_4(struct xarray *xa)
> > xa_store_index(xa, ULONG_MAX, GFP_KERNEL);
> >
> > entry = xa_find_after(xa, &index, ULONG_MAX, XA_PRESENT);
> > - XA_BUG_ON(xa, entry != xa_mk_index(ULONG_MAX));
> > + XA_BUG_ON(test, xa, entry != xa_mk_index(ULONG_MAX));
> >
> > entry = xa_find_after(xa, &index, ULONG_MAX, XA_PRESENT);
> > - XA_BUG_ON(xa, entry);
> > + XA_BUG_ON(test, xa, entry);
> >
> > - xa_erase_index(xa, ULONG_MAX);
> > + xa_erase_index(test, xa, ULONG_MAX);
> > }
> >
> > -static noinline void check_find(struct xarray *xa)
> > +static noinline void check_find(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > unsigned i;
> >
> > - check_find_1(xa);
> > - check_find_2(xa);
> > - check_find_3(xa);
> > - check_find_4(xa);
> > + check_find_1(test, xa);
> > + check_find_2(test, xa);
> > + check_find_3(test, xa);
> > + check_find_4(test, xa);
> >
> > for (i = 2; i < 10; i++)
> > - check_multi_find_1(xa, i);
> > - check_multi_find_2(xa);
> > + check_multi_find_1(test, xa, i);
> > + check_multi_find_2(test, xa);
> > }
> >
> > /* See find_swap_entry() in mm/shmem.c */
> > @@ -1106,8 +1150,9 @@ static noinline unsigned long xa_find_entry(struct xarray *xa, void *item)
> > return entry ? xas.xa_index : -1;
> > }
> >
> > -static noinline void check_find_entry(struct xarray *xa)
> > +static noinline void check_find_entry(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > #ifdef CONFIG_XARRAY_MULTI
> > unsigned int order;
> > unsigned long offset, index;
> > @@ -1119,69 +1164,72 @@ static noinline void check_find_entry(struct xarray *xa)
> > index += (1UL << order)) {
> > xa_store_order(xa, index, order,
> > xa_mk_index(index), GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_load(xa, index) !=
> > + XA_BUG_ON(test, xa, xa_load(xa, index) !=
> > xa_mk_index(index));
> > - XA_BUG_ON(xa, xa_find_entry(xa,
> > + XA_BUG_ON(test, xa, xa_find_entry(xa,
> > xa_mk_index(index)) != index);
> > }
> > - XA_BUG_ON(xa, xa_find_entry(xa, xa) != -1);
> > + XA_BUG_ON(test, xa, xa_find_entry(xa, xa) != -1);
> > xa_destroy(xa);
> > }
> > }
> > #endif
> >
> > - XA_BUG_ON(xa, xa_find_entry(xa, xa) != -1);
> > + XA_BUG_ON(test, xa, xa_find_entry(xa, xa) != -1);
> > xa_store_index(xa, ULONG_MAX, GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_find_entry(xa, xa) != -1);
> > - XA_BUG_ON(xa, xa_find_entry(xa, xa_mk_index(ULONG_MAX)) != -1);
> > - xa_erase_index(xa, ULONG_MAX);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_find_entry(xa, xa) != -1);
> > + XA_BUG_ON(test, xa, xa_find_entry(xa, xa_mk_index(ULONG_MAX)) != -1);
> > + xa_erase_index(test, xa, ULONG_MAX);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_move_tiny(struct xarray *xa)
> > +static noinline void check_move_tiny(struct kunit *test, struct xarray *xa)
> > {
> > XA_STATE(xas, xa, 0);
> >
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > rcu_read_lock();
> > - XA_BUG_ON(xa, xas_next(&xas) != NULL);
> > - XA_BUG_ON(xa, xas_next(&xas) != NULL);
> > + XA_BUG_ON(test, xa, xas_next(&xas) != NULL);
> > + XA_BUG_ON(test, xa, xas_next(&xas) != NULL);
> > rcu_read_unlock();
> > xa_store_index(xa, 0, GFP_KERNEL);
> > rcu_read_lock();
> > xas_set(&xas, 0);
> > - XA_BUG_ON(xa, xas_next(&xas) != xa_mk_index(0));
> > - XA_BUG_ON(xa, xas_next(&xas) != NULL);
> > + XA_BUG_ON(test, xa, xas_next(&xas) != xa_mk_index(0));
> > + XA_BUG_ON(test, xa, xas_next(&xas) != NULL);
> > xas_set(&xas, 0);
> > - XA_BUG_ON(xa, xas_prev(&xas) != xa_mk_index(0));
> > - XA_BUG_ON(xa, xas_prev(&xas) != NULL);
> > + XA_BUG_ON(test, xa, xas_prev(&xas) != xa_mk_index(0));
> > + XA_BUG_ON(test, xa, xas_prev(&xas) != NULL);
> > rcu_read_unlock();
> > - xa_erase_index(xa, 0);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, 0);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_move_max(struct xarray *xa)
> > +static noinline void check_move_max(struct kunit *test, struct xarray *xa)
> > {
> > XA_STATE(xas, xa, 0);
> >
> > xa_store_index(xa, ULONG_MAX, GFP_KERNEL);
> > rcu_read_lock();
> > - XA_BUG_ON(xa, xas_find(&xas, ULONG_MAX) != xa_mk_index(ULONG_MAX));
> > - XA_BUG_ON(xa, xas_find(&xas, ULONG_MAX) != NULL);
> > + XA_BUG_ON(test, xa,
> > + xas_find(&xas, ULONG_MAX) != xa_mk_index(ULONG_MAX));
> > + XA_BUG_ON(test, xa, xas_find(&xas, ULONG_MAX) != NULL);
> > rcu_read_unlock();
> >
> > xas_set(&xas, 0);
> > rcu_read_lock();
> > - XA_BUG_ON(xa, xas_find(&xas, ULONG_MAX) != xa_mk_index(ULONG_MAX));
> > + XA_BUG_ON(test, xa,
> > + xas_find(&xas, ULONG_MAX) != xa_mk_index(ULONG_MAX));
> > xas_pause(&xas);
> > - XA_BUG_ON(xa, xas_find(&xas, ULONG_MAX) != NULL);
> > + XA_BUG_ON(test, xa, xas_find(&xas, ULONG_MAX) != NULL);
> > rcu_read_unlock();
> >
> > - xa_erase_index(xa, ULONG_MAX);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, ULONG_MAX);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_move_small(struct xarray *xa, unsigned long idx)
> > +static noinline void check_move_small(struct kunit *test, struct xarray *xa,
> > + unsigned long idx)
> > {
> > XA_STATE(xas, xa, 0);
> > unsigned long i;
> > @@ -1193,71 +1241,72 @@ static noinline void check_move_small(struct xarray *xa, unsigned long idx)
> > for (i = 0; i < idx * 4; i++) {
> > void *entry = xas_next(&xas);
> > if (i <= idx)
> > - XA_BUG_ON(xa, xas.xa_node == XAS_RESTART);
> > - XA_BUG_ON(xa, xas.xa_index != i);
> > + XA_BUG_ON(test, xa, xas.xa_node == XAS_RESTART);
> > + XA_BUG_ON(test, xa, xas.xa_index != i);
> > if (i == 0 || i == idx)
> > - XA_BUG_ON(xa, entry != xa_mk_index(i));
> > + XA_BUG_ON(test, xa, entry != xa_mk_index(i));
> > else
> > - XA_BUG_ON(xa, entry != NULL);
> > + XA_BUG_ON(test, xa, entry != NULL);
> > }
> > xas_next(&xas);
> > - XA_BUG_ON(xa, xas.xa_index != i);
> > + XA_BUG_ON(test, xa, xas.xa_index != i);
> >
> > do {
> > void *entry = xas_prev(&xas);
> > i--;
> > if (i <= idx)
> > - XA_BUG_ON(xa, xas.xa_node == XAS_RESTART);
> > - XA_BUG_ON(xa, xas.xa_index != i);
> > + XA_BUG_ON(test, xa, xas.xa_node == XAS_RESTART);
> > + XA_BUG_ON(test, xa, xas.xa_index != i);
> > if (i == 0 || i == idx)
> > - XA_BUG_ON(xa, entry != xa_mk_index(i));
> > + XA_BUG_ON(test, xa, entry != xa_mk_index(i));
> > else
> > - XA_BUG_ON(xa, entry != NULL);
> > + XA_BUG_ON(test, xa, entry != NULL);
> > } while (i > 0);
> >
> > xas_set(&xas, ULONG_MAX);
> > - XA_BUG_ON(xa, xas_next(&xas) != NULL);
> > - XA_BUG_ON(xa, xas.xa_index != ULONG_MAX);
> > - XA_BUG_ON(xa, xas_next(&xas) != xa_mk_value(0));
> > - XA_BUG_ON(xa, xas.xa_index != 0);
> > - XA_BUG_ON(xa, xas_prev(&xas) != NULL);
> > - XA_BUG_ON(xa, xas.xa_index != ULONG_MAX);
> > + XA_BUG_ON(test, xa, xas_next(&xas) != NULL);
> > + XA_BUG_ON(test, xa, xas.xa_index != ULONG_MAX);
> > + XA_BUG_ON(test, xa, xas_next(&xas) != xa_mk_value(0));
> > + XA_BUG_ON(test, xa, xas.xa_index != 0);
> > + XA_BUG_ON(test, xa, xas_prev(&xas) != NULL);
> > + XA_BUG_ON(test, xa, xas.xa_index != ULONG_MAX);
> > rcu_read_unlock();
> >
> > - xa_erase_index(xa, 0);
> > - xa_erase_index(xa, idx);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, 0);
> > + xa_erase_index(test, xa, idx);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_move(struct xarray *xa)
> > +static noinline void check_move(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > XA_STATE(xas, xa, (1 << 16) - 1);
> > unsigned long i;
> >
> > for (i = 0; i < (1 << 16); i++)
> > - XA_BUG_ON(xa, xa_store_index(xa, i, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa, xa_store_index(xa, i, GFP_KERNEL) != NULL);
> >
> > rcu_read_lock();
> > do {
> > void *entry = xas_prev(&xas);
> > i--;
> > - XA_BUG_ON(xa, entry != xa_mk_index(i));
> > - XA_BUG_ON(xa, i != xas.xa_index);
> > + XA_BUG_ON(test, xa, entry != xa_mk_index(i));
> > + XA_BUG_ON(test, xa, i != xas.xa_index);
> > } while (i != 0);
> >
> > - XA_BUG_ON(xa, xas_prev(&xas) != NULL);
> > - XA_BUG_ON(xa, xas.xa_index != ULONG_MAX);
> > + XA_BUG_ON(test, xa, xas_prev(&xas) != NULL);
> > + XA_BUG_ON(test, xa, xas.xa_index != ULONG_MAX);
> >
> > do {
> > void *entry = xas_next(&xas);
> > - XA_BUG_ON(xa, entry != xa_mk_index(i));
> > - XA_BUG_ON(xa, i != xas.xa_index);
> > + XA_BUG_ON(test, xa, entry != xa_mk_index(i));
> > + XA_BUG_ON(test, xa, i != xas.xa_index);
> > i++;
> > } while (i < (1 << 16));
> > rcu_read_unlock();
> >
> > for (i = (1 << 8); i < (1 << 15); i++)
> > - xa_erase_index(xa, i);
> > + xa_erase_index(test, xa, i);
> >
> > i = xas.xa_index;
> >
> > @@ -1266,39 +1315,39 @@ static noinline void check_move(struct xarray *xa)
> > void *entry = xas_prev(&xas);
> > i--;
> > if ((i < (1 << 8)) || (i >= (1 << 15)))
> > - XA_BUG_ON(xa, entry != xa_mk_index(i));
> > + XA_BUG_ON(test, xa, entry != xa_mk_index(i));
> > else
> > - XA_BUG_ON(xa, entry != NULL);
> > - XA_BUG_ON(xa, i != xas.xa_index);
> > + XA_BUG_ON(test, xa, entry != NULL);
> > + XA_BUG_ON(test, xa, i != xas.xa_index);
> > } while (i != 0);
> >
> > - XA_BUG_ON(xa, xas_prev(&xas) != NULL);
> > - XA_BUG_ON(xa, xas.xa_index != ULONG_MAX);
> > + XA_BUG_ON(test, xa, xas_prev(&xas) != NULL);
> > + XA_BUG_ON(test, xa, xas.xa_index != ULONG_MAX);
> >
> > do {
> > void *entry = xas_next(&xas);
> > if ((i < (1 << 8)) || (i >= (1 << 15)))
> > - XA_BUG_ON(xa, entry != xa_mk_index(i));
> > + XA_BUG_ON(test, xa, entry != xa_mk_index(i));
> > else
> > - XA_BUG_ON(xa, entry != NULL);
> > - XA_BUG_ON(xa, i != xas.xa_index);
> > + XA_BUG_ON(test, xa, entry != NULL);
> > + XA_BUG_ON(test, xa, i != xas.xa_index);
> > i++;
> > } while (i < (1 << 16));
> > rcu_read_unlock();
> >
> > xa_destroy(xa);
> >
> > - check_move_tiny(xa);
> > - check_move_max(xa);
> > + check_move_tiny(test, xa);
> > + check_move_max(test, xa);
> >
> > for (i = 0; i < 16; i++)
> > - check_move_small(xa, 1UL << i);
> > + check_move_small(test, xa, 1UL << i);
> >
> > for (i = 2; i < 16; i++)
> > - check_move_small(xa, (1UL << i) - 1);
> > + check_move_small(test, xa, (1UL << i) - 1);
> > }
> >
> > -static noinline void xa_store_many_order(struct xarray *xa,
> > +static noinline void xa_store_many_order(struct kunit *test, struct xarray *xa,
> > unsigned long index, unsigned order)
> > {
> > XA_STATE_ORDER(xas, xa, index, order);
> > @@ -1306,53 +1355,55 @@ static noinline void xa_store_many_order(struct xarray *xa,
> >
> > do {
> > xas_lock(&xas);
> > - XA_BUG_ON(xa, xas_find_conflict(&xas));
> > + XA_BUG_ON(test, xa, xas_find_conflict(&xas));
> > xas_create_range(&xas);
> > if (xas_error(&xas))
> > goto unlock;
> > for (i = 0; i < (1U << order); i++) {
> > - XA_BUG_ON(xa, xas_store(&xas, xa_mk_index(index + i)));
> > + XA_BUG_ON(test, xa,
> > + xas_store(&xas, xa_mk_index(index + i)));
> > xas_next(&xas);
> > }
> > unlock:
> > xas_unlock(&xas);
> > } while (xas_nomem(&xas, GFP_KERNEL));
> >
> > - XA_BUG_ON(xa, xas_error(&xas));
> > + XA_BUG_ON(test, xa, xas_error(&xas));
> > }
> >
> > -static noinline void check_create_range_1(struct xarray *xa,
> > +static noinline void check_create_range_1(struct kunit *test, struct xarray *xa,
> > unsigned long index, unsigned order)
> > {
> > unsigned long i;
> >
> > - xa_store_many_order(xa, index, order);
> > + xa_store_many_order(test, xa, index, order);
> > for (i = index; i < index + (1UL << order); i++)
> > - xa_erase_index(xa, i);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, i);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_create_range_2(struct xarray *xa, unsigned order)
> > +static noinline void check_create_range_2(struct kunit *test, struct xarray *xa,
> > + unsigned int order)
> > {
> > unsigned long i;
> > unsigned long nr = 1UL << order;
> >
> > for (i = 0; i < nr * nr; i += nr)
> > - xa_store_many_order(xa, i, order);
> > + xa_store_many_order(test, xa, i, order);
> > for (i = 0; i < nr * nr; i++)
> > - xa_erase_index(xa, i);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, i);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_create_range_3(void)
> > +static noinline void check_create_range_3(struct kunit *test)
> > {
> > XA_STATE(xas, NULL, 0);
> > xas_set_err(&xas, -EEXIST);
> > xas_create_range(&xas);
> > - XA_BUG_ON(NULL, xas_error(&xas) != -EEXIST);
> > + XA_BUG_ON(test, NULL, xas_error(&xas) != -EEXIST);
> > }
> >
> > -static noinline void check_create_range_4(struct xarray *xa,
> > +static noinline void check_create_range_4(struct kunit *test, struct xarray *xa,
> > unsigned long index, unsigned order)
> > {
> > XA_STATE_ORDER(xas, xa, index, order);
> > @@ -1368,88 +1419,94 @@ static noinline void check_create_range_4(struct xarray *xa,
> > for (i = 0; i < (1UL << order); i++) {
> > void *old = xas_store(&xas, xa_mk_index(base + i));
> > if (xas.xa_index == index)
> > - XA_BUG_ON(xa, old != xa_mk_index(base + i));
> > + XA_BUG_ON(test, xa,
> > + old != xa_mk_index(base + i));
> > else
> > - XA_BUG_ON(xa, old != NULL);
> > + XA_BUG_ON(test, xa, old != NULL);
> > xas_next(&xas);
> > }
> > unlock:
> > xas_unlock(&xas);
> > } while (xas_nomem(&xas, GFP_KERNEL));
> >
> > - XA_BUG_ON(xa, xas_error(&xas));
> > + XA_BUG_ON(test, xa, xas_error(&xas));
> >
> > for (i = base; i < base + (1UL << order); i++)
> > - xa_erase_index(xa, i);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + xa_erase_index(test, xa, i);
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_create_range(struct xarray *xa)
> > +static noinline void check_create_range(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > unsigned int order;
> > unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 12 : 1;
> >
> > for (order = 0; order < max_order; order++) {
> > - check_create_range_1(xa, 0, order);
> > - check_create_range_1(xa, 1U << order, order);
> > - check_create_range_1(xa, 2U << order, order);
> > - check_create_range_1(xa, 3U << order, order);
> > - check_create_range_1(xa, 1U << 24, order);
> > + check_create_range_1(test, xa, 0, order);
> > + check_create_range_1(test, xa, 1U << order, order);
> > + check_create_range_1(test, xa, 2U << order, order);
> > + check_create_range_1(test, xa, 3U << order, order);
> > + check_create_range_1(test, xa, 1U << 24, order);
> > if (order < 10)
> > - check_create_range_2(xa, order);
> > -
> > - check_create_range_4(xa, 0, order);
> > - check_create_range_4(xa, 1U << order, order);
> > - check_create_range_4(xa, 2U << order, order);
> > - check_create_range_4(xa, 3U << order, order);
> > - check_create_range_4(xa, 1U << 24, order);
> > -
> > - check_create_range_4(xa, 1, order);
> > - check_create_range_4(xa, (1U << order) + 1, order);
> > - check_create_range_4(xa, (2U << order) + 1, order);
> > - check_create_range_4(xa, (2U << order) - 1, order);
> > - check_create_range_4(xa, (3U << order) + 1, order);
> > - check_create_range_4(xa, (3U << order) - 1, order);
> > - check_create_range_4(xa, (1U << 24) + 1, order);
> > + check_create_range_2(test, xa, order);
> > +
> > + check_create_range_4(test, xa, 0, order);
> > + check_create_range_4(test, xa, 1U << order, order);
> > + check_create_range_4(test, xa, 2U << order, order);
> > + check_create_range_4(test, xa, 3U << order, order);
> > + check_create_range_4(test, xa, 1U << 24, order);
> > +
> > + check_create_range_4(test, xa, 1, order);
> > + check_create_range_4(test, xa, (1U << order) + 1, order);
> > + check_create_range_4(test, xa, (2U << order) + 1, order);
> > + check_create_range_4(test, xa, (2U << order) - 1, order);
> > + check_create_range_4(test, xa, (3U << order) + 1, order);
> > + check_create_range_4(test, xa, (3U << order) - 1, order);
> > + check_create_range_4(test, xa, (1U << 24) + 1, order);
> > }
> >
> > - check_create_range_3();
> > + check_create_range_3(test);
> > }
> >
> > -static noinline void __check_store_range(struct xarray *xa, unsigned long first,
> > - unsigned long last)
> > +static noinline void __check_store_range(struct kunit *test,
> > + struct xarray *xa,
> > + unsigned long first,
> > + unsigned long last)
> > {
> > #ifdef CONFIG_XARRAY_MULTI
> > xa_store_range(xa, first, last, xa_mk_index(first), GFP_KERNEL);
> >
> > - XA_BUG_ON(xa, xa_load(xa, first) != xa_mk_index(first));
> > - XA_BUG_ON(xa, xa_load(xa, last) != xa_mk_index(first));
> > - XA_BUG_ON(xa, xa_load(xa, first - 1) != NULL);
> > - XA_BUG_ON(xa, xa_load(xa, last + 1) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, first) != xa_mk_index(first));
> > + XA_BUG_ON(test, xa, xa_load(xa, last) != xa_mk_index(first));
> > + XA_BUG_ON(test, xa, xa_load(xa, first - 1) != NULL);
> > + XA_BUG_ON(test, xa, xa_load(xa, last + 1) != NULL);
> >
> > xa_store_range(xa, first, last, NULL, GFP_KERNEL);
> > #endif
> >
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_store_range(struct xarray *xa)
> > +static noinline void check_store_range(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > unsigned long i, j;
> >
> > for (i = 0; i < 128; i++) {
> > for (j = i; j < 128; j++) {
> > - __check_store_range(xa, i, j);
> > - __check_store_range(xa, 128 + i, 128 + j);
> > - __check_store_range(xa, 4095 + i, 4095 + j);
> > - __check_store_range(xa, 4096 + i, 4096 + j);
> > - __check_store_range(xa, 123456 + i, 123456 + j);
> > - __check_store_range(xa, (1 << 24) + i, (1 << 24) + j);
> > + __check_store_range(test, xa, i, j);
> > + __check_store_range(test, xa, 128 + i, 128 + j);
> > + __check_store_range(test, xa, 4095 + i, 4095 + j);
> > + __check_store_range(test, xa, 4096 + i, 4096 + j);
> > + __check_store_range(test, xa, 123456 + i, 123456 + j);
> > + __check_store_range(test, xa,
> > + (1 << 24) + i, (1 << 24) + j);
> > }
> > }
> > }
> >
> > -static void check_align_1(struct xarray *xa, char *name)
> > +static void check_align_1(struct kunit *test, struct xarray *xa, char *name)
> > {
> > int i;
> > unsigned int id;
> > @@ -1457,12 +1514,12 @@ static void check_align_1(struct xarray *xa, char *name)
> > void *entry;
> >
> > for (i = 0; i < 8; i++) {
> > - XA_BUG_ON(xa, xa_alloc(xa, &id, name + i, xa_limit_32b,
> > + XA_BUG_ON(test, xa, xa_alloc(xa, &id, name + i, xa_limit_32b,
> > GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, id != i);
> > + XA_BUG_ON(test, xa, id != i);
> > }
> > xa_for_each(xa, index, entry)
> > - XA_BUG_ON(xa, xa_is_err(entry));
> > + XA_BUG_ON(test, xa, xa_is_err(entry));
> > xa_destroy(xa);
> > }
> >
> > @@ -1470,35 +1527,37 @@ static void check_align_1(struct xarray *xa, char *name)
> > * We should always be able to store without allocating memory after
> > * reserving a slot.
> > */
> > -static void check_align_2(struct xarray *xa, char *name)
> > +static void check_align_2(struct kunit *test, struct xarray *xa, char *name)
> > {
> > int i;
> >
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > for (i = 0; i < 8; i++) {
> > - XA_BUG_ON(xa, xa_store(xa, 0, name + i, GFP_KERNEL) != NULL);
> > + XA_BUG_ON(test, xa,
> > + xa_store(xa, 0, name + i, GFP_KERNEL) != NULL);
> > xa_erase(xa, 0);
> > }
> >
> > for (i = 0; i < 8; i++) {
> > - XA_BUG_ON(xa, xa_reserve(xa, 0, GFP_KERNEL) != 0);
> > - XA_BUG_ON(xa, xa_store(xa, 0, name + i, 0) != NULL);
> > + XA_BUG_ON(test, xa, xa_reserve(xa, 0, GFP_KERNEL) != 0);
> > + XA_BUG_ON(test, xa, xa_store(xa, 0, name + i, 0) != NULL);
> > xa_erase(xa, 0);
> > }
> >
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > -static noinline void check_align(struct xarray *xa)
> > +static noinline void check_align(struct kunit *test)
> > {
> > char name[] = "Motorola 68000";
> > + DEFINE_XARRAY_ALLOC(xa);
> >
> > - check_align_1(xa, name);
> > - check_align_1(xa, name + 1);
> > - check_align_1(xa, name + 2);
> > - check_align_1(xa, name + 3);
> > - check_align_2(xa, name);
> > + check_align_1(test, &xa, name);
> > + check_align_1(test, &xa, name + 1);
> > + check_align_1(test, &xa, name + 2);
> > + check_align_1(test, &xa, name + 3);
> > + check_align_2(test, &xa, name);
> > }
> >
> > static LIST_HEAD(shadow_nodes);
> > @@ -1514,7 +1573,7 @@ static void test_update_node(struct xa_node *node)
> > }
> > }
> >
> > -static noinline void shadow_remove(struct xarray *xa)
> > +static noinline void shadow_remove(struct kunit *test, struct xarray *xa)
> > {
> > struct xa_node *node;
> >
> > @@ -1522,7 +1581,7 @@ static noinline void shadow_remove(struct xarray *xa)
> > while ((node = list_first_entry_or_null(&shadow_nodes,
> > struct xa_node, private_list))) {
> > XA_STATE(xas, node->array, 0);
> > - XA_BUG_ON(xa, node->array != xa);
> > + XA_BUG_ON(test, xa, node->array != xa);
> > list_del_init(&node->private_list);
> > xas.xa_node = xa_parent_locked(node->array, node);
> > xas.xa_offset = node->offset;
> > @@ -1533,7 +1592,9 @@ static noinline void shadow_remove(struct xarray *xa)
> > xa_unlock(xa);
> > }
> >
> > -static noinline void check_workingset(struct xarray *xa, unsigned long index)
> > +static noinline void check_workingset(struct kunit *test,
> > + struct xarray *xa,
> > + unsigned long index)
> > {
> > XA_STATE(xas, xa, index);
> > xas_set_update(&xas, test_update_node);
> > @@ -1546,29 +1607,39 @@ static noinline void check_workingset(struct xarray *xa, unsigned long index)
> > xas_unlock(&xas);
> > } while (xas_nomem(&xas, GFP_KERNEL));
> >
> > - XA_BUG_ON(xa, list_empty(&shadow_nodes));
> > + XA_BUG_ON(test, xa, list_empty(&shadow_nodes));
> >
> > xas_lock(&xas);
> > xas_next(&xas);
> > xas_store(&xas, &xas);
> > - XA_BUG_ON(xa, !list_empty(&shadow_nodes));
> > + XA_BUG_ON(test, xa, !list_empty(&shadow_nodes));
> >
> > xas_store(&xas, xa_mk_value(2));
> > xas_unlock(&xas);
> > - XA_BUG_ON(xa, list_empty(&shadow_nodes));
> > + XA_BUG_ON(test, xa, list_empty(&shadow_nodes));
> >
> > - shadow_remove(xa);
> > - XA_BUG_ON(xa, !list_empty(&shadow_nodes));
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + shadow_remove(test, xa);
> > + XA_BUG_ON(test, xa, !list_empty(&shadow_nodes));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > +}
> > +
> > +static void check_workingset_all(struct kunit *test)
> > +{
> > + struct xarray *xa = test->priv;
> > +
> > + check_workingset(test, xa, 0);
> > + check_workingset(test, xa, 64);
> > + check_workingset(test, xa, 4096);
> > }
> >
> > /*
> > * Check that the pointer / value / sibling entries are accounted the
> > * way we expect them to be.
> > */
> > -static noinline void check_account(struct xarray *xa)
> > +static noinline void check_account(struct kunit *test)
> > {
> > #ifdef CONFIG_XARRAY_MULTI
> > + struct xarray *xa = test->priv;
> > unsigned int order;
> >
> > for (order = 1; order < 12; order++) {
> > @@ -1577,96 +1648,105 @@ static noinline void check_account(struct xarray *xa)
> > xa_store_order(xa, 0, order, xa, GFP_KERNEL);
> > rcu_read_lock();
> > xas_load(&xas);
> > - XA_BUG_ON(xa, xas.xa_node->count == 0);
> > - XA_BUG_ON(xa, xas.xa_node->count > (1 << order));
> > - XA_BUG_ON(xa, xas.xa_node->nr_values != 0);
> > + XA_BUG_ON(test, xa, xas.xa_node->count == 0);
> > + XA_BUG_ON(test, xa, xas.xa_node->count > (1 << order));
> > + XA_BUG_ON(test, xa, xas.xa_node->nr_values != 0);
> > rcu_read_unlock();
> >
> > xa_store_order(xa, 1 << order, order, xa_mk_index(1UL << order),
> > GFP_KERNEL);
> > - XA_BUG_ON(xa, xas.xa_node->count != xas.xa_node->nr_values * 2);
> > + XA_BUG_ON(test, xa,
> > + xas.xa_node->count != xas.xa_node->nr_values * 2);
> >
> > xa_erase(xa, 1 << order);
> > - XA_BUG_ON(xa, xas.xa_node->nr_values != 0);
> > + XA_BUG_ON(test, xa, xas.xa_node->nr_values != 0);
> >
> > xa_erase(xa, 0);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> > #endif
> > }
> >
> > -static noinline void check_destroy(struct xarray *xa)
> > +static noinline void check_destroy(struct kunit *test)
> > {
> > + struct xarray *xa = test->priv;
> > unsigned long index;
> >
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > /* Destroying an empty array is a no-op */
> > xa_destroy(xa);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > /* Destroying an array with a single entry */
> > for (index = 0; index < 1000; index++) {
> > xa_store_index(xa, index, GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_empty(xa));
> > xa_destroy(xa);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > }
> >
> > /* Destroying an array with a single entry at ULONG_MAX */
> > xa_store(xa, ULONG_MAX, xa, GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_empty(xa));
> > xa_destroy(xa);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> >
> > #ifdef CONFIG_XARRAY_MULTI
> > /* Destroying an array with a multi-index entry */
> > xa_store_order(xa, 1 << 11, 11, xa, GFP_KERNEL);
> > - XA_BUG_ON(xa, xa_empty(xa));
> > + XA_BUG_ON(test, xa, xa_empty(xa));
> > xa_destroy(xa);
> > - XA_BUG_ON(xa, !xa_empty(xa));
> > + XA_BUG_ON(test, xa, !xa_empty(xa));
> > #endif
> > }
> >
> > -static DEFINE_XARRAY(array);
> > -
> > -static int xarray_checks(void)
> > +static int xarray_test_init(struct kunit *test)
> > {
> > - check_xa_err(&array);
> > - check_xas_retry(&array);
> > - check_xa_load(&array);
> > - check_xa_mark(&array);
> > - check_xa_shrink(&array);
> > - check_xas_erase(&array);
> > - check_insert(&array);
> > - check_cmpxchg(&array);
> > - check_reserve(&array);
> > - check_reserve(&xa0);
> > - check_multi_store(&array);
> > - check_xa_alloc();
> > - check_find(&array);
> > - check_find_entry(&array);
> > - check_account(&array);
> > - check_destroy(&array);
> > - check_move(&array);
> > - check_create_range(&array);
> > - check_store_range(&array);
> > - check_store_iter(&array);
> > - check_align(&xa0);
> > -
> > - check_workingset(&array, 0);
> > - check_workingset(&array, 64);
> > - check_workingset(&array, 4096);
> > -
> > - printk("XArray: %u of %u tests passed\n", tests_passed, tests_run);
> > - return (tests_run == tests_passed) ? 0 : -EINVAL;
> > -}
> > + struct xarray *array;
> >
> > -static void xarray_exit(void)
> > -{
> > + array = kunit_kzalloc(test, sizeof(*array), GFP_KERNEL);
> > + KUNIT_ASSERT_TRUE(test, array);
> > +
> > + xa_init(array);
> > +
> > + test->priv = array;
> > +
> > + return 0;
> > }
> >
> > -module_init(xarray_checks);
> > -module_exit(xarray_exit);
> > +static struct kunit_case xarray_test_cases[] = {
> > + KUNIT_CASE(check_xa_err),
> > + KUNIT_CASE(check_xas_retry),
> > + KUNIT_CASE(check_xa_load),
> > + KUNIT_CASE(check_xa_mark),
> > + KUNIT_CASE(check_xa_shrink),
> > + KUNIT_CASE(check_xas_erase),
> > + KUNIT_CASE(check_insert),
> > + KUNIT_CASE(check_cmpxchg),
> > + KUNIT_CASE(check_multi_store),
> > + KUNIT_CASE(check_find),
> > + KUNIT_CASE(check_find_entry),
> > + KUNIT_CASE(check_account),
> > + KUNIT_CASE(check_destroy),
> > + KUNIT_CASE(check_move),
> > + KUNIT_CASE(check_create_range),
> > + KUNIT_CASE(check_store_range),
> > + KUNIT_CASE(check_store_iter),
> > + KUNIT_CASE(check_xa_alloc),
> > + KUNIT_CASE(check_workingset_all),
> > + KUNIT_CASE(check_reserve_all),
> > + KUNIT_CASE(check_align),
> > + {}
> > +};
> > +
> > +static struct kunit_suite xarray_test_suite = {
> > + .name = "xarray",
> > + .init = xarray_test_init,
> > + .test_cases = xarray_test_cases,
> > +};
> > +
> > +kunit_test_suites(&xarray_test_suite);
> > +
> > MODULE_AUTHOR("Matthew Wilcox <willy@...radead.org>");
> > MODULE_LICENSE("GPL");
> > diff --git a/lib/xarray.c b/lib/xarray.c
> > index 1d9fab7db8dad..ed221e3936606 100644
> > --- a/lib/xarray.c
> > +++ b/lib/xarray.c
> > @@ -2000,7 +2000,7 @@ void xa_destroy(struct xarray *xa)
> > }
> > EXPORT_SYMBOL(xa_destroy);
> >
> > -#ifdef XA_DEBUG
> > +#ifdef CONFIG_TEST_XARRAY
> > void xa_dump_node(const struct xa_node *node)
> > {
> > unsigned i, j;
> > @@ -2078,4 +2078,4 @@ void xa_dump(const struct xarray *xa)
> > shift = xa_to_node(entry)->shift + XA_CHUNK_SHIFT;
> > xa_dump_entry(entry, 0, shift);
> > }
> > -#endif
> > +#endif // CONFIG_TEST_XARRAY
> > --
> > 2.25.0.341.g760bfbb309-goog
> >
> >
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