On 9/25/2020 2:55 PM, Jason Gunthorpe wrote:
On Fri, Sep 25, 2020 at 10:13:30AM +0300, Leon Romanovsky wrote:
diff --git a/tools/testing/scatterlist/main.c b/tools/testing/scatterlist/main.c
index 0a1464181226..4899359a31ac 100644
+++ b/tools/testing/scatterlist/main.c
@@ -55,14 +55,13 @@ int main(void)
for (i = 0, test = tests; test->expected_segments; test++, i++) {
struct page *pages[MAX_PAGES];
struct sg_table st;
- int ret;
+ struct scatterlist *sg;
set_pages(pages, test->pfn, test->num_pages);
- ret = __sg_alloc_table_from_pages(&st, pages, test->num_pages,
- 0, test->size, test->max_seg,
- GFP_KERNEL);
- assert(ret == test->alloc_ret);
+ sg = __sg_alloc_table_from_pages(&st, pages, test->num_pages, 0,
+ test->size, test->max_seg, NULL, 0, GFP_KERNEL);
+ assert(PTR_ERR_OR_ZERO(sg) == test->alloc_ret);
Some test coverage for relatively complex code would be very welcomed. Since
the testing framework is already there, even if it bit-rotted a bit, but
shouldn't be hard to fix.
A few tests to check append/grow works as expected, in terms of how the end
table looks like given the initial state and some different page patterns
added to it. And both crossing and not crossing into sg chaining scenarios.
This function is basic for all RDMA devices and we are pretty confident
that the old and new flows are tested thoroughly.
Well, since 0-day is reporting that __i915_gem_userptr_alloc_pages is
crashing on this, it probably does need some tests :\
Jason
It is crashing in the regular old flow which already tested.
However, I will add more tests.
