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authorMaor Gottlieb <maorg@nvidia.com>2021-08-24 17:25:29 +0300
committerJason Gunthorpe <jgg@nvidia.com>2021-08-24 15:21:14 -0300
commit90e7a6de62781c27d6a111fccfb19b807f9b6887 (patch)
tree3d6375338bcc2032b928772f59bbbd3b410389f3 /tools/testing/scatterlist
parent7c60610d476766e128cc4284bb6349732cbd6606 (diff)
lib/scatterlist: Provide a dedicated function to support table append
RDMA is the only in-kernel user that uses __sg_alloc_table_from_pages to append pages dynamically. In the next patch. That mode will be extended and that function will get more parameters. So separate it into a unique function to make such change more clear. Link: https://lore.kernel.org/r/20210824142531.3877007-2-maorg@nvidia.com Signed-off-by: Maor Gottlieb <maorg@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'tools/testing/scatterlist')
-rw-r--r--tools/testing/scatterlist/main.c25
1 files changed, 18 insertions, 7 deletions
diff --git a/tools/testing/scatterlist/main.c b/tools/testing/scatterlist/main.c
index 652254754b4c..c2ff9179c2cc 100644
--- a/tools/testing/scatterlist/main.c
+++ b/tools/testing/scatterlist/main.c
@@ -87,28 +87,39 @@ int main(void)
int left_pages = test->pfn_app ? test->num_pages : 0;
struct page *pages[MAX_PAGES];
struct sg_table st;
- struct scatterlist *sg;
+ struct scatterlist *sg = NULL;
+ int ret;
set_pages(pages, test->pfn, test->num_pages);
- sg = __sg_alloc_table_from_pages(&st, pages, test->num_pages, 0,
- test->size, test->max_seg, NULL, left_pages, GFP_KERNEL);
- assert(PTR_ERR_OR_ZERO(sg) == test->alloc_ret);
+ if (test->pfn_app) {
+ sg = sg_alloc_append_table_from_pages(
+ &st, pages, test->num_pages, 0, test->size,
+ test->max_seg, NULL, left_pages, GFP_KERNEL);
+ assert(PTR_ERR_OR_ZERO(sg) == test->alloc_ret);
+ } else {
+ ret = sg_alloc_table_from_pages_segment(
+ &st, pages, test->num_pages, 0, test->size,
+ test->max_seg, GFP_KERNEL);
+ assert(ret == test->alloc_ret);
+ }
if (test->alloc_ret)
continue;
if (test->pfn_app) {
set_pages(pages, test->pfn_app, test->num_pages);
- sg = __sg_alloc_table_from_pages(&st, pages, test->num_pages, 0,
- test->size, test->max_seg, sg, 0, GFP_KERNEL);
+ sg = sg_alloc_append_table_from_pages(
+ &st, pages, test->num_pages, 0, test->size,
+ test->max_seg, sg, 0, GFP_KERNEL);
assert(PTR_ERR_OR_ZERO(sg) == test->alloc_ret);
}
VALIDATE(st.nents == test->expected_segments, &st, test);
if (!test->pfn_app)
- VALIDATE(st.orig_nents == test->expected_segments, &st, test);
+ VALIDATE(st.orig_nents == test->expected_segments, &st,
+ test);
sg_free_table(&st);
}