tools/testing/scatterlist: Fix test to compile and run

Add missing define of ALIGN_DOWN to make the test build and run.  In
addition, __sg_alloc_table_from_pages now support unaligned maximum
segment, so adapt the test result accordingly.

Fixes: 474fcb261a9a ("lib/scatterlist: Add support in dynamic allocation of SG table from pages")
Link: https://lore.kernel.org/r/20201115120623.139113-1-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/tools/testing/scatterlist/linux/mm.h b/tools/testing/scatterlist/linux/mm.h
index 6ae907f375d20a30b56590ce0d1e149707463a72..f9a12005fcea85214b4d940cd23c661b576adc7a 100644 (file)
--- a/tools/testing/scatterlist/linux/mm.h
+++ b/tools/testing/scatterlist/linux/mm.h
@@ -33,6 +33,7 @@ typedef unsigned long dma_addr_t;
 #define __ALIGN_KERNEL(x, a)           __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
 #define __ALIGN_KERNEL_MASK(x, mask)   (((x) + (mask)) & ~(mask))
 #define ALIGN(x, a)                    __ALIGN_KERNEL((x), (a))
+#define ALIGN_DOWN(x, a)               __ALIGN_KERNEL((x) - ((a) - 1), (a))
 
 #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE)
 

diff --git a/tools/testing/scatterlist/main.c b/tools/testing/scatterlist/main.c
index b2c7e9f7b8d3dcc1df66a381bc27678e1576f2e8..f561aed7c6570352178e44a214b228c58d800697 100644 (file)
--- a/tools/testing/scatterlist/main.c
+++ b/tools/testing/scatterlist/main.c
@@ -52,9 +52,9 @@ int main(void)
 {
        const unsigned int sgmax = SCATTERLIST_MAX_SEGMENT;
        struct test *test, tests[] = {
-               { -EINVAL, 1, pfn(0), PAGE_SIZE, PAGE_SIZE + 1, 1 },
                { -EINVAL, 1, pfn(0), PAGE_SIZE, 0, 1 },
-               { -EINVAL, 1, pfn(0), PAGE_SIZE, sgmax + 1, 1 },
+               { 0, 1, pfn(0), PAGE_SIZE, PAGE_SIZE + 1, 1 },
+               { 0, 1, pfn(0), PAGE_SIZE, sgmax + 1, 1 },
                { 0, 1, pfn(0), PAGE_SIZE, sgmax, 1 },
                { 0, 1, pfn(0), 1, sgmax, 1 },
                { 0, 2, pfn(0, 1), 2 * PAGE_SIZE, sgmax, 1 },