Re: [PATCH v6] selftests/dmabuf-heap: conform test to TAP format output

From: Muhammad Usama Anjum
Date: Sun Apr 14 2024 - 09:21:36 EST

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Kind reminder

On 4/4/24 4:49 PM, Muhammad Usama Anjum wrote:
> Soft reminder
>
> On 3/27/24 4:53 PM, Muhammad Usama Anjum wrote:
>> Conform the layout, informational and status messages to TAP. No
>> functional change is intended other than the layout of output messages.
>> Improve the TAP messages as well.
>>
>> Reviewed-by: T.J. Mercier <tjmercier@xxxxxxxxxx>
>> Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
>> ---
>> Changes since v5:
>> - Make the TAP messages more by adding more informat
>>
>> Changes since v4:
>> - close fds correctly with code changes added in v3
>>
>> Chanages since v3:
>> - abort test-case instead of exiting if heap/mem allocation fails
>> - Correct test_alloc_zeroed() test case in case of failure
>>
>> Changes since v2:
>> - Minor improvements in test_alloc_zeroed() results
>>
>> Changes since v1:
>> - Update some more error handling code
>> ---
>> .../selftests/dmabuf-heaps/dmabuf-heap.c | 247 +++++++-----------
>> 1 file changed, 101 insertions(+), 146 deletions(-)
>>
>> diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
>> index 890a8236a8ba7..5f541522364fb 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! %d\n", ret);
>>
>> 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;
>> @@ -148,27 +148,19 @@ 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;
>> + ksft_test_result_fail("FAIL (Allocation Failed!) %d\n", ret);
>> + return;
>> }
>> +
>> /* mmap and write a simple pattern */
>> - p = mmap(NULL,
>> - ONE_MEG,
>> - PROT_READ | PROT_WRITE,
>> - MAP_SHARED,
>> - dmabuf_fd,
>> - 0);
>> + p = mmap(NULL, ONE_MEG, PROT_READ | PROT_WRITE, MAP_SHARED, dmabuf_fd, 0);
>> if (p == MAP_FAILED) {
>> - printf("FAIL (mmap() failed)\n");
>> - ret = -1;
>> - goto out;
>> + ksft_test_result_fail("FAIL (mmap() failed): %s\n", strerror(errno));
>> + goto close_and_return;
>> }
>>
>> dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START);
>> @@ -178,71 +170,64 @@ 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 %d\n", importer_fd);
>> } 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 %d\n", ret);
>> }
>>
>> 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!) %d\n", ret);
>> 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!) %d\n", ret);
>> goto out;
>> }
>>
>> close_handle(importer_fd, handle);
>> - ret = 0;
>> - printf(" OK\n");
>> + ksft_test_result_pass("%s dmabuf sync succeeded\n", __func__);
>> + return;
>> +
>> out:
>> - if (p)
>> - munmap(p, ONE_MEG);
>> - if (importer_fd >= 0)
>> - close(importer_fd);
>> - if (dmabuf_fd >= 0)
>> - close(dmabuf_fd);
>> - if (heap_fd >= 0)
>> - close(heap_fd);
>> + ksft_test_result_fail("%s dmabuf sync failed\n", __func__);
>> + munmap(p, ONE_MEG);
>> + close(importer_fd);
>>
>> - return ret;
>> +close_and_return:
>> + close(dmabuf_fd);
>> + close(heap_fd);
>> }
>>
>> -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;
>> + int i, j, k, 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_test_result_fail("FAIL (Allocation (%i) failed) %d\n", i, ret);
>> + goto close_and_return;
>> }
>> +
>> /* 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;
>> + ksft_test_result_fail("FAIL (mmap() failed!): %s\n", strerror(errno));
>> + goto close_and_return;
>> }
>> +
>> dmabuf_sync(dmabuf_fd[i], DMA_BUF_SYNC_START);
>> memset(p, 0xff, size);
>> dmabuf_sync(dmabuf_fd[i], DMA_BUF_SYNC_END);
>> @@ -251,48 +236,47 @@ static int test_alloc_zeroed(char *heap_name, size_t size)
>> /* close them all */
>> for (i = 0; i < 32; i++)
>> close(dmabuf_fd[i]);
>> + ksft_test_result_pass("Allocate and fill a bunch of buffers\n");
>>
>> /* 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;
>> + ksft_test_result_fail("FAIL (Allocation (%i) failed) %d\n", i, ret);
>> + goto close_and_return;
>> }
>>
>> /* 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;
>> + ksft_test_result_fail("FAIL (mmap() failed!): %s\n", strerror(errno));
>> + goto close_and_return;
>> }
>> +
>> 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);
>> - break;
>> + ksft_print_msg("FAIL (Allocated buffer not zeroed @ %i)\n", j);
>> + dmabuf_sync(dmabuf_fd[i], DMA_BUF_SYNC_END);
>> + munmap(p, size);
>> + goto out;
>> }
>> }
>> dmabuf_sync(dmabuf_fd[i], DMA_BUF_SYNC_END);
>> munmap(p, size);
>> }
>> - /* close them all */
>> - for (i = 0; i < 32; i++)
>> - close(dmabuf_fd[i]);
>> -
>> - close(heap_fd);
>> - printf("OK\n");
>> - return 0;
>>
>> out:
>> - while (i > 0) {
>> - close(dmabuf_fd[i]);
>> - i--;
>> - }
>> + ksft_test_result(i == 32, "Allocate and validate all buffers are zeroed\n");
>> +
>> +close_and_return:
>> + /* close them all */
>> + for (k = 0; k < i; k++)
>> + close(dmabuf_fd[k]);
>> +
>> close(heap_fd);
>> - return ret;
>> + return;
>> }
>>
>> /* Test the ioctl version compatibility w/ a smaller structure then expected */
>> @@ -360,126 +344,97 @@ 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 %d\n", ret);
>>
>> 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 %d\n", ret);
>>
>> 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 %d\n", ret);
>>
>> - printf("OK\n");
>> - ret = 0;
>> -out:
>> if (dmabuf_fd >= 0)
>> close(dmabuf_fd);
>> - if (heap_fd >= 0)
>> - close(heap_fd);
>> + 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(11 * 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();
>> }
>

--
BR,
Muhammad Usama Anjum

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