On Tue, Feb 27, 2024 at 4:21 AM Muhammad Usama Anjum usama.anjum@collabora.com wrote:
Conform the layout, informational and status messages to TAP. No functional change is intended other than the layout of output messages.
Signed-off-by: Muhammad Usama Anjum usama.anjum@collabora.com
Changes since v1:
- Update some more error handling code
.../selftests/dmabuf-heaps/dmabuf-heap.c | 217 +++++++----------- 1 file changed, 81 insertions(+), 136 deletions(-)
diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c index 890a8236a8ba7..41a8485cad5d0 100644 --- a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c +++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c @@ -15,6 +15,7 @@ #include <linux/dma-buf.h> #include <linux/dma-heap.h> #include <drm/drm.h> +#include "../kselftest.h"
#define DEVPATH "/dev/dma_heap"
@@ -90,14 +91,13 @@ static int dmabuf_heap_open(char *name) char buf[256];
ret = snprintf(buf, 256, "%s/%s", DEVPATH, name);
if (ret < 0) {printf("snprintf failed!\n");return ret;}
if (ret < 0)ksft_exit_fail_msg("snprintf failed!\n"); fd = open(buf, O_RDWR); if (fd < 0)
printf("open %s failed!\n", buf);
ksft_exit_fail_msg("open %s failed: %s\n", buf, strerror(errno));return fd;}
@@ -140,7 +140,7 @@ static int dmabuf_sync(int fd, int start_stop)
#define ONE_MEG (1024 * 1024)
-static int test_alloc_and_import(char *heap_name) +static void test_alloc_and_import(char *heap_name) { int heap_fd = -1, dmabuf_fd = -1, importer_fd = -1; uint32_t handle = 0; @@ -148,16 +148,12 @@ static int test_alloc_and_import(char *heap_name) int ret;
heap_fd = dmabuf_heap_open(heap_name);
if (heap_fd < 0)return -1;printf(" Testing allocation and importing: ");
ksft_print_msg("Testing allocation and importing:\n"); ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0, &dmabuf_fd);
if (ret) {printf("FAIL (Allocation Failed!)\n");ret = -1;goto out;}
if (ret)ksft_exit_fail_msg("FAIL (Allocation Failed!)\n");/* mmap and write a simple pattern */ p = mmap(NULL, ONE_MEG,@@ -165,11 +161,8 @@ static int test_alloc_and_import(char *heap_name) MAP_SHARED, dmabuf_fd, 0);
if (p == MAP_FAILED) {printf("FAIL (mmap() failed)\n");ret = -1;goto out;}
if (p == MAP_FAILED)ksft_exit_fail_msg("FAIL (mmap() failed)\n"); dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START); memset(p, 1, ONE_MEG / 2);@@ -179,31 +172,28 @@ static int test_alloc_and_import(char *heap_name) importer_fd = open_vgem(); if (importer_fd < 0) { ret = importer_fd;
printf("(Could not open vgem - skipping): ");
ksft_test_result_skip("Could not open vgem\n"); } else { ret = import_vgem_fd(importer_fd, dmabuf_fd, &handle);
if (ret < 0) {printf("FAIL (Failed to import buffer)\n");goto out;}
ksft_test_result(ret >= 0, "Import buffer\n"); } ret = dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START); if (ret < 0) {
printf("FAIL (DMA_BUF_SYNC_START failed!)\n");
ksft_print_msg("FAIL (DMA_BUF_SYNC_START failed!)\n"); goto out; } memset(p, 0xff, ONE_MEG); ret = dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_END); if (ret < 0) {
printf("FAIL (DMA_BUF_SYNC_END failed!)\n");
ksft_print_msg("FAIL (DMA_BUF_SYNC_END failed!)\n"); goto out; } close_handle(importer_fd, handle);
ret = 0;printf(" OK\n");
ksft_test_result_pass("%s\n", __func__);return;out: if (p) munmap(p, ONE_MEG); @@ -214,35 +204,30 @@ static int test_alloc_and_import(char *heap_name) if (heap_fd >= 0) close(heap_fd);
return ret;
ksft_test_result_fail("%s\n", __func__);}
-static int test_alloc_zeroed(char *heap_name, size_t size) +static void test_alloc_zeroed(char *heap_name, size_t size) { int heap_fd = -1, dmabuf_fd[32]; int i, j, ret; void *p = NULL; char *c;
printf(" Testing alloced %ldk buffers are zeroed: ", size / 1024);
ksft_print_msg("Testing alloced %ldk buffers are zeroed:\n", size / 1024); heap_fd = dmabuf_heap_open(heap_name);
if (heap_fd < 0)return -1; /* Allocate and fill a bunch of buffers */ for (i = 0; i < 32; i++) { ret = dmabuf_heap_alloc(heap_fd, size, 0, &dmabuf_fd[i]);if (ret < 0) {printf("FAIL (Allocation (%i) failed)\n", i);goto out;}
if (ret)ksft_exit_fail_msg("FAIL (Allocation (%i) failed)\n", i);/* mmap and fill with simple pattern */ p = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, dmabuf_fd[i], 0);
if (p == MAP_FAILED) {printf("FAIL (mmap() failed!)\n");ret = -1;goto out;}
if (p == MAP_FAILED)ksft_exit_fail_msg("FAIL (mmap() failed!)\n");
So based on the previous ksft_exit_fail_msg calls I thought your intention was to exit the program and never run subsequent tests when errors occurred. That's what led to my initial comment about switching to ksft_exit_fail_msg from ksft_print_msg here, and I expected to see only ksft_exit_fail_msg for error cases afterwards. But you're still mixing ksft_exit_fail_msg and (ksft_print_msg + ksft_test_result{_pass,_fail,_skip}) so we've got a mix of behaviors where some errors lead to complete program exits and different errors lead to skipped/failed tests followed by further progress.
It seems most useful and predictable to me to have all tests run even after encountering an error for a single test, which we don't get when ksft_exit_fail_msg is called from the individual tests. I was fine with switching all error handling to ksft_exit_fail_msg to eliminate cleanup code and reduce maintenance, but I think we should be consistent with the behavior for dealing with errors which this doesn't currently have. So let's either always call ksft_exit_fail_msg for errors, or never call it (my preference).
Slight tangent: For this specific MAP_FAILED error, I don't actually think it should be considered a test failure because the mmap operation is optional for dma-buf: https://docs.kernel.org/driver-api/dma-buf.html#c.dma_buf_ops. It would be pretty unusual to get a buffer like that, and skipping instead of failing when that happens would differ from the original behavior of the test so that could go in another patch, but I wanted to point this out.
dmabuf_sync(dmabuf_fd[i], DMA_BUF_SYNC_START); memset(p, 0xff, size); dmabuf_sync(dmabuf_fd[i], DMA_BUF_SYNC_END);@@ -255,23 +240,19 @@ static int test_alloc_zeroed(char *heap_name, size_t size) /* Allocate and validate all buffers are zeroed */ for (i = 0; i < 32; i++) { ret = dmabuf_heap_alloc(heap_fd, size, 0, &dmabuf_fd[i]);
if (ret < 0) {printf("FAIL (Allocation (%i) failed)\n", i);goto out;}
if (ret < 0)ksft_exit_fail_msg("FAIL (Allocation (%i) failed)\n", i); /* mmap and validate everything is zero */ p = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, dmabuf_fd[i], 0);
if (p == MAP_FAILED) {printf("FAIL (mmap() failed!)\n");ret = -1;goto out;}
if (p == MAP_FAILED)ksft_exit_fail_msg("FAIL (mmap() failed!)\n");dmabuf_sync(dmabuf_fd[i], DMA_BUF_SYNC_START); c = (char *)p; for (j = 0; j < size; j++) { if (c[j] != 0) {
printf("FAIL (Allocated buffer not zeroed @ %i)\n", j);
ksft_print_msg("FAIL (Allocated buffer not zeroed @ %i)\n", j); break; } }@@ -283,16 +264,8 @@ static int test_alloc_zeroed(char *heap_name, size_t size) close(dmabuf_fd[i]);
close(heap_fd);
printf("OK\n");return 0;-out:
while (i > 0) {close(dmabuf_fd[i]);i--;}close(heap_fd);return ret;
ksft_test_result_pass("%s\n", __func__);
Don't we need ksft_test_result based on whether we ever see a non-zero value so that we get ksft_cnt.ksft_fail++ for the failure case? Otherwise we could have all non-zero values and the test would still pass with a bunch of "FAIL (Allocated buffer not zeroed" ksft_print_msg.
return;}
/* Test the ioctl version compatibility w/ a smaller structure then expected */ @@ -360,126 +333,98 @@ static int dmabuf_heap_alloc_newer(int fd, size_t len, unsigned int flags, return ret; }
-static int test_alloc_compat(char *heap_name) +static void test_alloc_compat(char *heap_name) {
int heap_fd = -1, dmabuf_fd = -1;int ret;
int ret, heap_fd = -1, dmabuf_fd = -1; heap_fd = dmabuf_heap_open(heap_name);
if (heap_fd < 0)return -1;printf(" Testing (theoretical)older alloc compat: ");
ksft_print_msg("Testing (theoretical) older alloc compat:\n"); ret = dmabuf_heap_alloc_older(heap_fd, ONE_MEG, 0, &dmabuf_fd);
if (ret) {printf("FAIL (Older compat allocation failed!)\n");ret = -1;goto out;}close(dmabuf_fd);printf("OK\n");
if (dmabuf_fd >= 0)close(dmabuf_fd);ksft_test_result(!ret, "dmabuf_heap_alloc_older\n");
printf(" Testing (theoretical)newer alloc compat: ");
ksft_print_msg("Testing (theoretical) newer alloc compat:\n"); ret = dmabuf_heap_alloc_newer(heap_fd, ONE_MEG, 0, &dmabuf_fd);
if (ret) {printf("FAIL (Newer compat allocation failed!)\n");ret = -1;goto out;}printf("OK\n");-out: if (dmabuf_fd >= 0) close(dmabuf_fd);
if (heap_fd >= 0)close(heap_fd);
ksft_test_result(!ret, "dmabuf_heap_alloc_newer\n");
return ret;
close(heap_fd);}
-static int test_alloc_errors(char *heap_name) +static void test_alloc_errors(char *heap_name) { int heap_fd = -1, dmabuf_fd = -1; int ret;
heap_fd = dmabuf_heap_open(heap_name);
if (heap_fd < 0)return -1;printf(" Testing expected error cases: ");
ksft_print_msg("Testing expected error cases:\n"); ret = dmabuf_heap_alloc(0, ONE_MEG, 0x111111, &dmabuf_fd);
if (!ret) {printf("FAIL (Did not see expected error (invalid fd)!)\n");ret = -1;goto out;}
ksft_test_result(ret, "Error expected on invalid fd\n"); ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0x111111, &dmabuf_fd);
if (!ret) {printf("FAIL (Did not see expected error (invalid heap flags)!)\n");ret = -1;goto out;}
ksft_test_result(ret, "Error expected on invalid heap flags\n"); ret = dmabuf_heap_alloc_fdflags(heap_fd, ONE_MEG, ~(O_RDWR | O_CLOEXEC), 0, &dmabuf_fd);
if (!ret) {printf("FAIL (Did not see expected error (invalid fd flags)!)\n");ret = -1;goto out;}
ksft_test_result(ret, "Error expected on invalid heap flags\n");
printf("OK\n");ret = 0;-out: if (dmabuf_fd >= 0) close(dmabuf_fd); if (heap_fd >= 0) close(heap_fd); +}
return ret;+static int numer_of_heaps(void) +{
DIR *d = opendir(DEVPATH);struct dirent *dir;int heaps = 0;while ((dir = readdir(d))) {if (!strncmp(dir->d_name, ".", 2))continue;if (!strncmp(dir->d_name, "..", 3))continue;heaps++;}return heaps;}
int main(void) {
DIR *d; struct dirent *dir;int ret = -1;
DIR *d;ksft_print_header(); d = opendir(DEVPATH); if (!d) {
printf("No %s directory?\n", DEVPATH);return -1;
ksft_print_msg("No %s directory?\n", DEVPATH);return KSFT_SKIP; }
while ((dir = readdir(d)) != NULL) {
ksft_set_plan(9 * numer_of_heaps());while ((dir = readdir(d))) { if (!strncmp(dir->d_name, ".", 2)) continue; if (!strncmp(dir->d_name, "..", 3)) continue;
printf("Testing heap: %s\n", dir->d_name);printf("=======================================\n");ret = test_alloc_and_import(dir->d_name);if (ret)break;ret = test_alloc_zeroed(dir->d_name, 4 * 1024);if (ret)break;ret = test_alloc_zeroed(dir->d_name, ONE_MEG);if (ret)break;ret = test_alloc_compat(dir->d_name);if (ret)break;ret = test_alloc_errors(dir->d_name);if (ret)break;
ksft_print_msg("Testing heap: %s\n", dir->d_name);ksft_print_msg("=======================================\n");test_alloc_and_import(dir->d_name);test_alloc_zeroed(dir->d_name, 4 * 1024);test_alloc_zeroed(dir->d_name, ONE_MEG);test_alloc_compat(dir->d_name);test_alloc_errors(dir->d_name); } closedir(d);
return ret;
ksft_finished();}
2.42.0