Re: [PATCH v2 5/7] selftests/mm: hugetlb-read-hwpoison: conform test to TAP format output

From: Muhammad Usama Anjum
Date: Mon Jan 15 2024 - 01:59:40 EST

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On 1/15/24 11:52 AM, Jiaqi Yan wrote:
> On Sun, Jan 14, 2024 at 10:32 PM Muhammad Usama Anjum
> <usama.anjum@xxxxxxxxxxxxx> wrote:
>>
>> On 1/13/24 6:08 AM, Jiaqi Yan wrote:
>>> On Thu, Jan 11, 2024 at 11:21 PM Muhammad Usama Anjum
>>> <usama.anjum@xxxxxxxxxxxxx> 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@xxxxxxxxxxxxx>
>>>> ---
>>>> Tested this by reverting the patch a08c7193e4f18dc8508f2d07d0de2c5b94cb39a3
>>>> ("mm/filemap: remove hugetlb special casing in filemap.c") as it has
>>>> broken the test. The bug report can be found at [1].
>>>>
>>>> Tested with proposed fix as well [2].
>>>>
>>>> [1] https://lore.kernel.org/all/079335ab-190f-41f7-b832-6ffe7528fd8b@xxxxxxxxxxxxx
>>>> [2] https://lore.kernel.org/all/a20e7bdb-7344-306d-e8f5-5ee69af7d5ea@xxxxxxxxxx
>>>> ---
>>>> .../selftests/mm/hugetlb-read-hwpoison.c | 116 +++++++++---------
>>>> 1 file changed, 56 insertions(+), 60 deletions(-)
>>>>
>>>> diff --git a/tools/testing/selftests/mm/hugetlb-read-hwpoison.c b/tools/testing/selftests/mm/hugetlb-read-hwpoison.c
>>>> index ba6cc6f9cabc..193ad7275df5 100644
>>>> --- a/tools/testing/selftests/mm/hugetlb-read-hwpoison.c
>>>> +++ b/tools/testing/selftests/mm/hugetlb-read-hwpoison.c
>>>> @@ -58,8 +58,8 @@ static bool verify_chunk(char *buf, size_t len, char val)
>>>>
>>>> for (i = 0; i < len; ++i) {
>>>> if (buf[i] != val) {
>>>> - printf(PREFIX ERROR_PREFIX "check fail: buf[%lu] = %u != %u\n",
>>>> - i, buf[i], val);
>>>> + ksft_print_msg(PREFIX ERROR_PREFIX "check fail: buf[%lu] = %u != %u\n",
>>>> + i, buf[i], val);
>>>> return false;
>>>> }
>>>> }
>>>> @@ -75,9 +75,9 @@ static bool seek_read_hugepage_filemap(int fd, size_t len, size_t wr_chunk_size,
>>>> ssize_t total_ret_count = 0;
>>>> char val = offset / wr_chunk_size + offset % wr_chunk_size;
>>>>
>>>> - printf(PREFIX PREFIX "init val=%u with offset=0x%lx\n", val, offset);
>>>> - printf(PREFIX PREFIX "expect to read 0x%lx bytes of data in total\n",
>>>> - expected);
>>>> + ksft_print_msg(PREFIX PREFIX "init val=%u with offset=0x%lx\n", val, offset);
>>>> + ksft_print_msg(PREFIX PREFIX "expect to read 0x%lx bytes of data in total\n",
>>>> + expected);
>>>> if (lseek(fd, offset, SEEK_SET) < 0) {
>>>> perror(PREFIX ERROR_PREFIX "seek failed");
>>>> return false;
>>>> @@ -86,7 +86,7 @@ static bool seek_read_hugepage_filemap(int fd, size_t len, size_t wr_chunk_size,
>>>> while (offset + total_ret_count < len) {
>>>> ret_count = read(fd, buf, wr_chunk_size);
>>>> if (ret_count == 0) {
>>>> - printf(PREFIX PREFIX "read reach end of the file\n");
>>>> + ksft_print_msg(PREFIX PREFIX "read reach end of the file\n");
>>>> break;
>>>> } else if (ret_count < 0) {
>>>> perror(PREFIX ERROR_PREFIX "read failed");
>>>> @@ -98,8 +98,8 @@ static bool seek_read_hugepage_filemap(int fd, size_t len, size_t wr_chunk_size,
>>>>
>>>> total_ret_count += ret_count;
>>>> }
>>>> - printf(PREFIX PREFIX "actually read 0x%lx bytes of data in total\n",
>>>> - total_ret_count);
>>>> + ksft_print_msg(PREFIX PREFIX "actually read 0x%lx bytes of data in total\n",
>>>> + total_ret_count);
>>>>
>>>> return total_ret_count == expected;
>>>> }
>>>> @@ -112,15 +112,15 @@ static bool read_hugepage_filemap(int fd, size_t len,
>>>> ssize_t total_ret_count = 0;
>>>> char val = 0;
>>>>
>>>> - printf(PREFIX PREFIX "expect to read 0x%lx bytes of data in total\n",
>>>> - expected);
>>>> + ksft_print_msg(PREFIX PREFIX "expect to read 0x%lx bytes of data in total\n",
>>>> + expected);
>>>> while (total_ret_count < len) {
>>>> ret_count = read(fd, buf, wr_chunk_size);
>>>> if (ret_count == 0) {
>>>> - printf(PREFIX PREFIX "read reach end of the file\n");
>>>> + ksft_print_msg(PREFIX PREFIX "read reach end of the file\n");
>>>> break;
>>>> } else if (ret_count < 0) {
>>>> - perror(PREFIX ERROR_PREFIX "read failed");
>>>> + ksft_print_msg(PREFIX ERROR_PREFIX "read failed");
>>>
>>> Should we also include strerror(errno) in log msg, like you did below?
>> Looks like I missed it. I'll post a v3.
>>>
>>> Actually, would ksft_perror be a better choice for perror()s?
>> It may or may not be. There aren't ksft_*_perror macros for printing the
>> logs at this time. I prefer using just whatever macros are available. They
>> aren't generic enough. Maybe mm tests use perror whenever error occurs, but
>> other tests don't.
>
> can't you use this ksft_perror available today?
> https://github.com/torvalds/linux/blob/master/tools/testing/selftests/kselftest.h#L161C25-L172
Sorry, I wan't able to find it. It has missing signature in header comment
as well. I'll just update this current test. I'll use ksft_perror in future
patches. Thanks for mentining it.

>
>>
>>>
>>>>
>>>> break;
>>>> }
>>>> ++val;
>>>> @@ -129,8 +129,8 @@ static bool read_hugepage_filemap(int fd, size_t len,
>>>>
>>>> total_ret_count += ret_count;
>>>> }
>>>> - printf(PREFIX PREFIX "actually read 0x%lx bytes of data in total\n",
>>>> - total_ret_count);
>>>> + ksft_print_msg(PREFIX PREFIX "actually read 0x%lx bytes of data in total\n",
>>>> + total_ret_count);
>>>>
>>>> return total_ret_count == expected;
>>>> }
>>>> @@ -142,14 +142,15 @@ test_hugetlb_read(int fd, size_t len, size_t wr_chunk_size)
>>>> char *filemap = NULL;
>>>>
>>>> if (ftruncate(fd, len) < 0) {
>>>> - perror(PREFIX ERROR_PREFIX "ftruncate failed");
>>>> + ksft_print_msg(PREFIX ERROR_PREFIX "ftruncate failed: %s\n", strerror(errno));
>>>> return status;
>>>> }
>>>>
>>>> filemap = mmap(NULL, len, PROT_READ | PROT_WRITE,
>>>> MAP_SHARED | MAP_POPULATE, fd, 0);
>>>> if (filemap == MAP_FAILED) {
>>>> - perror(PREFIX ERROR_PREFIX "mmap for primary mapping failed");
>>>> + ksft_print_msg(PREFIX ERROR_PREFIX "mmap for primary mapping failed: %s\n",
>>>> + strerror(errno));
>>>> goto done;
>>>> }
>>>>
>>>> @@ -162,7 +163,8 @@ test_hugetlb_read(int fd, size_t len, size_t wr_chunk_size)
>>>> munmap(filemap, len);
>>>> done:
>>>> if (ftruncate(fd, 0) < 0) {
>>>> - perror(PREFIX ERROR_PREFIX "ftruncate back to 0 failed");
>>>> + ksft_print_msg(PREFIX ERROR_PREFIX "ftruncate back to 0 failed : %s\n",
>>>> + strerror(errno));
>>>> status = TEST_FAILED;
>>>> }
>>>>
>>>> @@ -179,14 +181,15 @@ test_hugetlb_read_hwpoison(int fd, size_t len, size_t wr_chunk_size,
>>>> const unsigned long pagesize = getpagesize();
>>>>
>>>> if (ftruncate(fd, len) < 0) {
>>>> - perror(PREFIX ERROR_PREFIX "ftruncate failed");
>>>> + ksft_print_msg(PREFIX ERROR_PREFIX "ftruncate failed: %s\n", strerror(errno));
>>>> return status;
>>>> }
>>>>
>>>> filemap = mmap(NULL, len, PROT_READ | PROT_WRITE,
>>>> MAP_SHARED | MAP_POPULATE, fd, 0);
>>>> if (filemap == MAP_FAILED) {
>>>> - perror(PREFIX ERROR_PREFIX "mmap for primary mapping failed");
>>>> + ksft_print_msg(PREFIX ERROR_PREFIX "mmap for primary mapping failed: %s\n",
>>>> + strerror(errno));
>>>> goto done;
>>>> }
>>>>
>>>> @@ -201,7 +204,7 @@ test_hugetlb_read_hwpoison(int fd, size_t len, size_t wr_chunk_size,
>>>> */
>>>> hwp_addr = filemap + len / 2 + pagesize;
>>>> if (madvise(hwp_addr, pagesize, MADV_HWPOISON) < 0) {
>>>> - perror(PREFIX ERROR_PREFIX "MADV_HWPOISON failed");
>>>> + ksft_print_msg(PREFIX ERROR_PREFIX "MADV_HWPOISON failed: %s\n", strerror(errno));
>>>> goto unmap;
>>>> }
>>>>
>>>> @@ -228,7 +231,8 @@ test_hugetlb_read_hwpoison(int fd, size_t len, size_t wr_chunk_size,
>>>> munmap(filemap, len);
>>>> done:
>>>> if (ftruncate(fd, 0) < 0) {
>>>> - perror(PREFIX ERROR_PREFIX "ftruncate back to 0 failed");
>>>> + ksft_print_msg(PREFIX ERROR_PREFIX "ftruncate back to 0 failed: %s\n",
>>>> + strerror(errno));
>>>> status = TEST_FAILED;
>>>> }
>>>>
>>>> @@ -240,27 +244,32 @@ static int create_hugetlbfs_file(struct statfs *file_stat)
>>>> int fd;
>>>>
>>>> fd = memfd_create("hugetlb_tmp", MFD_HUGETLB);
>>>> - if (fd < 0) {
>>>> - perror(PREFIX ERROR_PREFIX "could not open hugetlbfs file");
>>>> - return -1;
>>>> - }
>>>> + if (fd < 0)
>>>> + ksft_exit_fail_msg(PREFIX ERROR_PREFIX "could not open hugetlbfs file: %s\n",
>>>> + strerror(errno));
>>>>
>>>> memset(file_stat, 0, sizeof(*file_stat));
>>>> +
>>>> if (fstatfs(fd, file_stat)) {
>>>> - perror(PREFIX ERROR_PREFIX "fstatfs failed");
>>>> - goto close;
>>>> + close(fd);
>>>> + ksft_exit_fail_msg(PREFIX ERROR_PREFIX "fstatfs failed: %s\n", strerror(errno));
>>>> }
>>>> if (file_stat->f_type != HUGETLBFS_MAGIC) {
>>>> - printf(PREFIX ERROR_PREFIX "not hugetlbfs file\n");
>>>> - goto close;
>>>> + close(fd);
>>>> + ksft_exit_fail_msg(PREFIX ERROR_PREFIX "not hugetlbfs file\n");
>>>> }
>>>>
>>>> return fd;
>>>> -close:
>>>> - close(fd);
>>>> - return -1;
>>>> }
>>>>
>>>> +#define KSFT_PRINT_MSG(status, fmt, ...) \
>>>> + do { \
>>>> + if (status == TEST_SKIPPED) \
>>>> + ksft_test_result_skip(fmt, __VA_ARGS__); \
>>>> + else \
>>>> + ksft_test_result(status == TEST_PASSED, fmt, __VA_ARGS__); \
>>>> + } while (0)
>>>> +
>>>> int main(void)
>>>> {
>>>> int fd;
>>>> @@ -273,50 +282,37 @@ int main(void)
>>>> };
>>>> size_t i;
>>>>
>>>> + ksft_print_header();
>>>> + ksft_set_plan(12);
>>>> +
>>>> for (i = 0; i < ARRAY_SIZE(wr_chunk_sizes); ++i) {
>>>> - printf("Write/read chunk size=0x%lx\n",
>>>> - wr_chunk_sizes[i]);
>>>> + ksft_print_msg("Write/read chunk size=0x%lx\n",
>>>> + wr_chunk_sizes[i]);
>>>>
>>>> fd = create_hugetlbfs_file(&file_stat);
>>>> - if (fd < 0)
>>>> - goto create_failure;
>>>> - printf(PREFIX "HugeTLB read regression test...\n");
>>>> + ksft_print_msg(PREFIX "HugeTLB read regression test...\n");
>>>> status = test_hugetlb_read(fd, file_stat.f_bsize,
>>>> wr_chunk_sizes[i]);
>>>> - printf(PREFIX "HugeTLB read regression test...%s\n",
>>>> - status_to_str(status));
>>>> + KSFT_PRINT_MSG(status, PREFIX "HugeTLB read regression test...%s\n",
>>>> + status_to_str(status));
>>>> close(fd);
>>>> - if (status == TEST_FAILED)
>>>> - return -1;
>>>>
>>>> fd = create_hugetlbfs_file(&file_stat);
>>>> - if (fd < 0)
>>>> - goto create_failure;
>>>> - printf(PREFIX "HugeTLB read HWPOISON test...\n");
>>>> + ksft_print_msg(PREFIX "HugeTLB read HWPOISON test...\n");
>>>> status = test_hugetlb_read_hwpoison(fd, file_stat.f_bsize,
>>>> wr_chunk_sizes[i], false);
>>>> - printf(PREFIX "HugeTLB read HWPOISON test...%s\n",
>>>> - status_to_str(status));
>>>> + KSFT_PRINT_MSG(status, PREFIX "HugeTLB read HWPOISON test..%s\n",
>>>> + status_to_str(status));
>>>> close(fd);
>>>> - if (status == TEST_FAILED)
>>>> - return -1;
>>>>
>>>> fd = create_hugetlbfs_file(&file_stat);
>>>> - if (fd < 0)
>>>> - goto create_failure;
>>>> - printf(PREFIX "HugeTLB seek then read HWPOISON test...\n");
>>>> + ksft_print_msg(PREFIX "HugeTLB seek then read HWPOISON test...\n");
>>>> status = test_hugetlb_read_hwpoison(fd, file_stat.f_bsize,
>>>> wr_chunk_sizes[i], true);
>>>> - printf(PREFIX "HugeTLB seek then read HWPOISON test...%s\n",
>>>> - status_to_str(status));
>>>> + KSFT_PRINT_MSG(status, PREFIX "HugeTLB seek then read HWPOISON test...%s\n",
>>>> + status_to_str(status));
>>>> close(fd);
>>>> - if (status == TEST_FAILED)
>>>> - return -1;
>>>> }
>>>>
>>>> - return 0;
>>>> -
>>>> -create_failure:
>>>> - printf(ERROR_PREFIX "Abort test: failed to create hugetlbfs file\n");
>>>> - return -1;
>>>> + ksft_finished();
>>>> }
>>>> --
>>>> 2.42.0
>>>>
>>>>
>>>
>>
>> --
>> BR,
>> Muhammad Usama Anjum
>

--
BR,
Muhammad Usama Anjum

Next message: Tiezhu Yang: "[PATCH bpf-next v3 0/2] Skip callback tests if jit is disabled in test_verifier"
Previous message: Kemeng Shi: "[PATCH] sbitmap: remove stale comment in sbq_calc_wake_batch"
In reply to: Jiaqi Yan: "Re: [PATCH v2 5/7] selftests/mm: hugetlb-read-hwpoison: conform test to TAP format output"
Next in thread: Muhammad Usama Anjum: "[PATCH v2 7/7] selftests/mm: config: add missing configs"
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