Re: [PATCH 4/7] selftests/mm: khugepaged: conform test to TAP format output
From: Muhammad Usama Anjum
Date: Thu Jan 11 2024 - 07:07:58 EST
Sorry, forgot to remvove 2 lines. I'll resend if there aren't any comments
until tomorrow.
On 1/11/24 4:56 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.
>
> Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
> ---
> tools/testing/selftests/mm/khugepaged.c | 378 ++++++++++--------------
> 1 file changed, 160 insertions(+), 218 deletions(-)
>
> diff --git a/tools/testing/selftests/mm/khugepaged.c b/tools/testing/selftests/mm/khugepaged.c
> index 829320a519e7..0ed82b8b31fa 100644
> --- a/tools/testing/selftests/mm/khugepaged.c
> +++ b/tools/testing/selftests/mm/khugepaged.c
> @@ -23,6 +23,7 @@
>
> #include "vm_util.h"
> #include "thp_settings.h"
> +#include "../kselftest.h"
>
> #define BASE_ADDR ((void *)(1UL << 30))
> static unsigned long hpage_pmd_size;
> @@ -73,22 +74,20 @@ struct file_info {
>
> static struct file_info finfo;
> static bool skip_settings_restore;
> -static int exit_status;
>
> static void success(const char *msg)
> {
> - printf(" \e[32m%s\e[0m\n", msg);
> + ksft_test_result_pass("%s\n", msg);
> }
>
> static void fail(const char *msg)
> {
> - printf(" \e[31m%s\e[0m\n", msg);
> - exit_status++;
> + ksft_test_result_fail("%s\n", msg);
> }
>
> static void skip(const char *msg)
> {
> - printf(" \e[33m%s\e[0m\n", msg);
> + ksft_test_result_skip("\e%s\n", msg);
> }
>
> static void restore_settings_atexit(void)
> @@ -96,9 +95,8 @@ static void restore_settings_atexit(void)
> if (skip_settings_restore)
> return;
>
> - printf("Restore THP and khugepaged settings...");
> thp_restore_settings();
> - success("OK");
> + ksft_print_msg("Restored THP and khugepaged settings...\n");
>
> skip_settings_restore = true;
> }
> @@ -106,12 +104,12 @@ static void restore_settings_atexit(void)
> static void restore_settings(int sig)
> {
> /* exit() will invoke the restore_settings_atexit handler. */
> - exit(sig ? EXIT_FAILURE : exit_status);
> + ksft_finished();
> }
>
> static void save_settings(void)
> {
> - printf("Save THP and khugepaged settings...");
> + ksft_print_msg("Save THP and khugepaged settings...\n");
> if (file_ops && finfo.type == VMA_FILE)
> thp_set_read_ahead_path(finfo.dev_queue_read_ahead_path);
> thp_save_settings();
> @@ -135,60 +133,50 @@ static void get_finfo(const char *dir)
>
> finfo.dir = dir;
> stat(finfo.dir, &path_stat);
> - if (!S_ISDIR(path_stat.st_mode)) {
> - printf("%s: Not a directory (%s)\n", __func__, finfo.dir);
> - exit(EXIT_FAILURE);
> - }
> + if (!S_ISDIR(path_stat.st_mode))
> + ksft_exit_fail_msg("%s: Not a directory (%s)\n", __func__, finfo.dir);
> +
> if (snprintf(finfo.path, sizeof(finfo.path), "%s/" TEST_FILE,
> - finfo.dir) >= sizeof(finfo.path)) {
> - printf("%s: Pathname is too long\n", __func__);
> - exit(EXIT_FAILURE);
> - }
> - if (statfs(finfo.dir, &fs)) {
> - perror("statfs()");
> - exit(EXIT_FAILURE);
> - }
> + finfo.dir) >= sizeof(finfo.path))
> + ksft_exit_fail_msg("%s: Pathname is too long\n", __func__);
> +
> + if (statfs(finfo.dir, &fs))
> + ksft_exit_fail_msg("statfs(): %s\n", strerror(errno));
> +
> finfo.type = fs.f_type == TMPFS_MAGIC ? VMA_SHMEM : VMA_FILE;
> if (finfo.type == VMA_SHMEM)
> return;
>
> /* Find owning device's queue/read_ahead_kb control */
> if (snprintf(path, sizeof(path), "/sys/dev/block/%d:%d/uevent",
> - major(path_stat.st_dev), minor(path_stat.st_dev))
> - >= sizeof(path)) {
> - printf("%s: Pathname is too long\n", __func__);
> - exit(EXIT_FAILURE);
> - }
> - if (read_file(path, buf, sizeof(buf)) < 0) {
> - perror("read_file(read_num)");
> - exit(EXIT_FAILURE);
> - }
> + major(path_stat.st_dev), minor(path_stat.st_dev)) >= sizeof(path))
> + ksft_exit_fail_msg("%s: Pathname is too long\n", __func__);
> +
> + if (read_file(path, buf, sizeof(buf)) < 0)
> + ksft_exit_fail_msg("read_file(read_num): %s\n", strerror(errno));
> +
> if (strstr(buf, "DEVTYPE=disk")) {
> /* Found it */
> if (snprintf(finfo.dev_queue_read_ahead_path,
> sizeof(finfo.dev_queue_read_ahead_path),
> "/sys/dev/block/%d:%d/queue/read_ahead_kb",
> major(path_stat.st_dev), minor(path_stat.st_dev))
> - >= sizeof(finfo.dev_queue_read_ahead_path)) {
> - printf("%s: Pathname is too long\n", __func__);
> - exit(EXIT_FAILURE);
> - }
> + >= sizeof(finfo.dev_queue_read_ahead_path))
> + ksft_exit_fail_msg("%s: Pathname is too long: %s\n", __func__,
> + strerror(errno));
> return;
> }
> - if (!strstr(buf, "DEVTYPE=partition")) {
> - printf("%s: Unknown device type: %s\n", __func__, path);
> - exit(EXIT_FAILURE);
> - }
> + if (!strstr(buf, "DEVTYPE=partition"))
> + ksft_exit_fail_msg("%s: Unknown device type: %s\n", __func__, path);
> /*
> * Partition of block device - need to find actual device.
> * Using naming convention that devnameN is partition of
> * device devname.
> */
> str = strstr(buf, "DEVNAME=");
> - if (!str) {
> - printf("%s: Could not read: %s", __func__, path);
> - exit(EXIT_FAILURE);
> - }
> + if (!str)
> + ksft_exit_fail_msg("%s: Could not read: %s", __func__, path);
> +
> str += 8;
> end = str;
> while (*end) {
> @@ -197,16 +185,14 @@ static void get_finfo(const char *dir)
> if (snprintf(finfo.dev_queue_read_ahead_path,
> sizeof(finfo.dev_queue_read_ahead_path),
> "/sys/block/%s/queue/read_ahead_kb",
> - str) >= sizeof(finfo.dev_queue_read_ahead_path)) {
> - printf("%s: Pathname is too long\n", __func__);
> - exit(EXIT_FAILURE);
> - }
> + str) >= sizeof(finfo.dev_queue_read_ahead_path))
> + ksft_exit_fail_msg("%s: Pathname is too long\n", __func__);
> +
> return;
> }
> ++end;
> }
> - printf("%s: Could not read: %s\n", __func__, path);
> - exit(EXIT_FAILURE);
> + ksft_exit_fail_msg("%s: Could not read: %s\n", __func__, path);
> }
>
> static bool check_swap(void *addr, unsigned long size)
> @@ -219,26 +205,21 @@ static bool check_swap(void *addr, unsigned long size)
>
> ret = snprintf(addr_pattern, MAX_LINE_LENGTH, "%08lx-",
> (unsigned long) addr);
> - if (ret >= MAX_LINE_LENGTH) {
> - printf("%s: Pattern is too long\n", __func__);
> - exit(EXIT_FAILURE);
> - }
> -
> + if (ret >= MAX_LINE_LENGTH)
> + ksft_exit_fail_msg("%s: Pattern is too long\n", __func__);
>
> fp = fopen(PID_SMAPS, "r");
> - if (!fp) {
> - printf("%s: Failed to open file %s\n", __func__, PID_SMAPS);
> - exit(EXIT_FAILURE);
> - }
> + if (!fp)
> + ksft_exit_fail_msg("%s: Failed to open file %s\n", __func__, PID_SMAPS);
> +
> if (!check_for_pattern(fp, addr_pattern, buffer, sizeof(buffer)))
> goto err_out;
>
> ret = snprintf(addr_pattern, MAX_LINE_LENGTH, "Swap:%19ld kB",
> size >> 10);
> - if (ret >= MAX_LINE_LENGTH) {
> - printf("%s: Pattern is too long\n", __func__);
> - exit(EXIT_FAILURE);
> - }
> + if (ret >= MAX_LINE_LENGTH)
> + ksft_exit_fail_msg("%s: Pattern is too long\n", __func__);
> +
> /*
> * Fetch the Swap: in the same block and check whether it got
> * the expected number of hugeepages next.
> @@ -261,10 +242,8 @@ static void *alloc_mapping(int nr)
>
> p = mmap(BASE_ADDR, nr * hpage_pmd_size, PROT_READ | PROT_WRITE,
> MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
> - if (p != BASE_ADDR) {
> - printf("Failed to allocate VMA at %p\n", BASE_ADDR);
> - exit(EXIT_FAILURE);
> - }
> + if (p != BASE_ADDR)
> + ksft_exit_fail_msg("Failed to allocate VMA at %p\n", BASE_ADDR);
>
> return p;
> }
> @@ -314,19 +293,16 @@ static void *alloc_hpage(struct mem_ops *ops)
> * khugepaged on low-load system (like a test machine), which
> * would cause MADV_COLLAPSE to fail with EAGAIN.
> */
> - printf("Allocate huge page...");
> - if (madvise_collapse_retry(p, hpage_pmd_size)) {
> - perror("madvise(MADV_COLLAPSE)");
> - exit(EXIT_FAILURE);
> - }
> - if (!ops->check_huge(p, 1)) {
> - perror("madvise(MADV_COLLAPSE)");
> - exit(EXIT_FAILURE);
> - }
> - if (madvise(p, hpage_pmd_size, MADV_HUGEPAGE)) {
> - perror("madvise(MADV_HUGEPAGE)");
> - exit(EXIT_FAILURE);
> - }
> + ksft_print_msg("Allocate huge page...\n");
> + if (madvise_collapse_retry(p, hpage_pmd_size))
> + ksft_exit_fail_msg("madvise(MADV_COLLAPSE): %s\n", strerror(errno));
> +
> + if (!ops->check_huge(p, 1))
> + ksft_exit_fail_msg("madvise(MADV_COLLAPSE): %s\n", strerror(errno));
> +
> + if (madvise(p, hpage_pmd_size, MADV_HUGEPAGE))
> + ksft_exit_fail_msg("madvise(MADV_HUGEPAGE): %s\n", strerror(errno));
> +
> success("OK");
> return p;
> }
> @@ -335,13 +311,12 @@ static void validate_memory(int *p, unsigned long start, unsigned long end)
> {
> int i;
>
> - for (i = start / page_size; i < end / page_size; i++) {
> - if (p[i * page_size / sizeof(*p)] != i + 0xdead0000) {
> - printf("Page %d is corrupted: %#x\n",
> - i, p[i * page_size / sizeof(*p)]);
> - exit(EXIT_FAILURE);
> - }
> - }
> + for (i = start / page_size; i < end / page_size; i++)
> + if (p[i * page_size / sizeof(*p)] != i + 0xdead0000)
> + ksft_print_msg("Page %d is corrupted: %#x\n",
> + i, p[i * page_size / sizeof(*p)]);
> +
> + ksft_test_result(i == end/page_size, "Validated memory\n");
> }
>
> static void *anon_setup_area(int nr_hpages)
> @@ -371,14 +346,12 @@ static void *file_setup_area(int nr_hpages)
> unsigned long size;
>
> unlink(finfo.path); /* Cleanup from previous failed tests */
> - printf("Creating %s for collapse%s...", finfo.path,
> - finfo.type == VMA_SHMEM ? " (tmpfs)" : "");
> + ksft_print_msg("Creating %s for collapse%s...\n", finfo.path,
> + finfo.type == VMA_SHMEM ? " (tmpfs)" : "");
> fd = open(finfo.path, O_DSYNC | O_CREAT | O_RDWR | O_TRUNC | O_EXCL,
> 777);
> - if (fd < 0) {
> - perror("open()");
> - exit(EXIT_FAILURE);
> - }
> + if (fd < 0)
> + ksft_exit_fail_msg("open(): %s\n", strerror(errno));
>
> size = nr_hpages * hpage_pmd_size;
> p = alloc_mapping(nr_hpages);
> @@ -388,18 +361,15 @@ static void *file_setup_area(int nr_hpages)
> munmap(p, size);
> success("OK");
>
> - printf("Opening %s read only for collapse...", finfo.path);
> + ksft_print_msg("Opening %s read only for collapse...\n", finfo.path);
> finfo.fd = open(finfo.path, O_RDONLY, 777);
> - if (finfo.fd < 0) {
> - perror("open()");
> - exit(EXIT_FAILURE);
> - }
> + if (finfo.fd < 0)
> + ksft_exit_fail_msg("open(): %s\n", strerror(errno));
> +
> p = mmap(BASE_ADDR, size, PROT_READ | PROT_EXEC,
> MAP_PRIVATE, finfo.fd, 0);
> - if (p == MAP_FAILED || p != BASE_ADDR) {
> - perror("mmap()");
> - exit(EXIT_FAILURE);
> - }
> + if (p == MAP_FAILED || p != BASE_ADDR)
> + ksft_exit_fail_msg("mmap(): %s\n", strerror(errno));
>
> /* Drop page cache */
> write_file("/proc/sys/vm/drop_caches", "3", 2);
> @@ -416,10 +386,8 @@ static void file_cleanup_area(void *p, unsigned long size)
>
> static void file_fault(void *p, unsigned long start, unsigned long end)
> {
> - if (madvise(((char *)p) + start, end - start, MADV_POPULATE_READ)) {
> - perror("madvise(MADV_POPULATE_READ");
> - exit(EXIT_FAILURE);
> - }
> + if (madvise(((char *)p) + start, end - start, MADV_POPULATE_READ))
> + ksft_exit_fail_msg("madvise(MADV_POPULATE_READ: %s\n", strerror(errno));
> }
>
> static bool file_check_huge(void *addr, int nr_hpages)
> @@ -430,7 +398,7 @@ static bool file_check_huge(void *addr, int nr_hpages)
> case VMA_SHMEM:
> return check_huge_shmem(addr, nr_hpages, hpage_pmd_size);
> default:
> - exit(EXIT_FAILURE);
> + ksft_exit_fail_msg("Wrong type\n");
> return false;
> }
> }
> @@ -441,20 +409,16 @@ static void *shmem_setup_area(int nr_hpages)
> unsigned long size = nr_hpages * hpage_pmd_size;
>
> finfo.fd = memfd_create("khugepaged-selftest-collapse-shmem", 0);
> - if (finfo.fd < 0) {
> - perror("memfd_create()");
> - exit(EXIT_FAILURE);
> - }
> - if (ftruncate(finfo.fd, size)) {
> - perror("ftruncate()");
> - exit(EXIT_FAILURE);
> - }
> - p = mmap(BASE_ADDR, size, PROT_READ | PROT_WRITE, MAP_SHARED, finfo.fd,
> - 0);
> - if (p != BASE_ADDR) {
> - perror("mmap()");
> - exit(EXIT_FAILURE);
> - }
> + if (finfo.fd < 0)
> + ksft_exit_fail_msg("memfd_create(): %s\n", strerror(errno));
> +
> + if (ftruncate(finfo.fd, size))
> + ksft_exit_fail_msg("ftruncate(): %s\n", strerror(errno));
> +
> + p = mmap(BASE_ADDR, size, PROT_READ | PROT_WRITE, MAP_SHARED, finfo.fd, 0);
> + if (p != BASE_ADDR)
> + ksft_exit_fail_msg("mmap(): %s\n", strerror(errno));
> +
> return p;
> }
>
> @@ -499,7 +463,7 @@ static void __madvise_collapse(const char *msg, char *p, int nr_hpages,
> int ret;
> struct thp_settings settings = *thp_current_settings();
>
> - printf("%s...", msg);
> + ksft_print_msg("%s...\n", msg);
>
> /*
> * Prevent khugepaged interference and tests that MADV_COLLAPSE
> @@ -526,10 +490,9 @@ static void madvise_collapse(const char *msg, char *p, int nr_hpages,
> struct mem_ops *ops, bool expect)
> {
> /* Sanity check */
> - if (!ops->check_huge(p, 0)) {
> - printf("Unexpected huge page\n");
> - exit(EXIT_FAILURE);
> - }
> + if (!ops->check_huge(p, 0))
> + ksft_exit_fail_msg("Unexpected huge page\n");
> +
> __madvise_collapse(msg, p, nr_hpages, ops, expect);
> }
>
> @@ -541,23 +504,20 @@ static bool wait_for_scan(const char *msg, char *p, int nr_hpages,
> int timeout = 6; /* 3 seconds */
>
> /* Sanity check */
> - if (!ops->check_huge(p, 0)) {
> - printf("Unexpected huge page\n");
> - exit(EXIT_FAILURE);
> - }
> + if (!ops->check_huge(p, 0))
> + ksft_exit_fail_msg("Unexpected huge page\n");
>
> madvise(p, nr_hpages * hpage_pmd_size, MADV_HUGEPAGE);
>
> /* Wait until the second full_scan completed */
> full_scans = thp_read_num("khugepaged/full_scans") + 2;
>
> - printf("%s...", msg);
> + ksft_print_msg("%s...\n", msg);
> while (timeout--) {
> if (ops->check_huge(p, nr_hpages))
> break;
> if (thp_read_num("khugepaged/full_scans") >= full_scans)
> break;
> - printf(".");
> usleep(TICK);
> }
>
> @@ -623,7 +583,7 @@ static void alloc_at_fault(void)
>
> p = alloc_mapping(1);
> *p = 1;
> - printf("Allocate huge page on fault...");
> + ksft_print_msg("Allocate huge page on fault...\n");
> if (check_huge_anon(p, 1, hpage_pmd_size))
> success("OK");
> else
> @@ -632,7 +592,7 @@ static void alloc_at_fault(void)
> thp_pop_settings();
>
> madvise(p, page_size, MADV_DONTNEED);
> - printf("Split huge PMD on MADV_DONTNEED...");
> + ksft_print_msg("Split huge PMD on MADV_DONTNEED...\n");
> if (check_huge_anon(p, 0, hpage_pmd_size))
> success("OK");
> else
> @@ -688,7 +648,7 @@ static void collapse_max_ptes_none(struct collapse_context *c, struct mem_ops *o
>
> if (is_tmpfs(ops)) {
> /* shmem pages always in the page cache */
> - printf("tmpfs...");
> + ksft_print_msg("tmpfs...\n");
> skip("Skip");
> goto skip;
> }
> @@ -717,11 +677,10 @@ static void collapse_swapin_single_pte(struct collapse_context *c, struct mem_op
> p = ops->setup_area(1);
> ops->fault(p, 0, hpage_pmd_size);
>
> - printf("Swapout one page...");
> - if (madvise(p, page_size, MADV_PAGEOUT)) {
> - perror("madvise(MADV_PAGEOUT)");
> - exit(EXIT_FAILURE);
> - }
> + ksft_print_msg("Swapout one page...\n");
> + if (madvise(p, page_size, MADV_PAGEOUT))
> + ksft_exit_fail_msg("madvise(MADV_PAGEOUT): %s\n", strerror(errno));
> +
> if (check_swap(p, page_size)) {
> success("OK");
> } else {
> @@ -744,11 +703,10 @@ static void collapse_max_ptes_swap(struct collapse_context *c, struct mem_ops *o
> p = ops->setup_area(1);
> ops->fault(p, 0, hpage_pmd_size);
>
> - printf("Swapout %d of %d pages...", max_ptes_swap + 1, hpage_pmd_nr);
> - if (madvise(p, (max_ptes_swap + 1) * page_size, MADV_PAGEOUT)) {
> - perror("madvise(MADV_PAGEOUT)");
> - exit(EXIT_FAILURE);
> - }
> + ksft_print_msg("Swapout %d of %d pages...\n", max_ptes_swap + 1, hpage_pmd_nr);
> + if (madvise(p, (max_ptes_swap + 1) * page_size, MADV_PAGEOUT))
> + ksft_exit_fail_msg("madvise(MADV_PAGEOUT): %s\n", strerror(errno));
> +
> if (check_swap(p, (max_ptes_swap + 1) * page_size)) {
> success("OK");
> } else {
> @@ -762,12 +720,11 @@ static void collapse_max_ptes_swap(struct collapse_context *c, struct mem_ops *o
>
> if (c->enforce_pte_scan_limits) {
> ops->fault(p, 0, hpage_pmd_size);
> - printf("Swapout %d of %d pages...", max_ptes_swap,
> + ksft_print_msg("Swapout %d of %d pages...\n", max_ptes_swap,
> hpage_pmd_nr);
> - if (madvise(p, max_ptes_swap * page_size, MADV_PAGEOUT)) {
> - perror("madvise(MADV_PAGEOUT)");
> - exit(EXIT_FAILURE);
> - }
> + if (madvise(p, max_ptes_swap * page_size, MADV_PAGEOUT))
> + ksft_exit_fail_msg("madvise(MADV_PAGEOUT): %s\n", strerror(errno));
> +
> if (check_swap(p, max_ptes_swap * page_size)) {
> success("OK");
> } else {
> @@ -791,13 +748,13 @@ static void collapse_single_pte_entry_compound(struct collapse_context *c, struc
>
> if (is_tmpfs(ops)) {
> /* MADV_DONTNEED won't evict tmpfs pages */
> - printf("tmpfs...");
> + ksft_print_msg("tmpfs...\n");
> skip("Skip");
> goto skip;
> }
>
> madvise(p, hpage_pmd_size, MADV_NOHUGEPAGE);
> - printf("Split huge page leaving single PTE mapping compound page...");
> + ksft_print_msg("Split huge page leaving single PTE mapping compound page...\n");
> madvise(p + page_size, hpage_pmd_size - page_size, MADV_DONTNEED);
> if (ops->check_huge(p, 0))
> success("OK");
> @@ -816,7 +773,7 @@ static void collapse_full_of_compound(struct collapse_context *c, struct mem_ops
> void *p;
>
> p = alloc_hpage(ops);
> - printf("Split huge page leaving single PTE page table full of compound pages...");
> + ksft_print_msg("Split huge page leaving single PTE page table full of compound pages...\n");
> madvise(p, page_size, MADV_NOHUGEPAGE);
> madvise(p, hpage_pmd_size, MADV_NOHUGEPAGE);
> if (ops->check_huge(p, 0))
> @@ -837,15 +794,14 @@ static void collapse_compound_extreme(struct collapse_context *c, struct mem_ops
>
> p = ops->setup_area(1);
> for (i = 0; i < hpage_pmd_nr; i++) {
> - printf("\rConstruct PTE page table full of different PTE-mapped compound pages %3d/%d...",
> - i + 1, hpage_pmd_nr);
> + ksft_print_msg("\rConstruct PTE page table full of different PTE-mapped "
> + "compound pages %3d/%d...", i + 1, hpage_pmd_nr);
>
> madvise(BASE_ADDR, hpage_pmd_size, MADV_HUGEPAGE);
> ops->fault(BASE_ADDR, 0, hpage_pmd_size);
> - if (!ops->check_huge(BASE_ADDR, 1)) {
> - printf("Failed to allocate huge page\n");
> - exit(EXIT_FAILURE);
> - }
> + if (!ops->check_huge(BASE_ADDR, 1))
> + ksft_exit_fail_msg("Failed to allocate huge page\n");
> +
> madvise(BASE_ADDR, hpage_pmd_size, MADV_NOHUGEPAGE);
>
> p = mremap(BASE_ADDR - i * page_size,
> @@ -853,22 +809,20 @@ static void collapse_compound_extreme(struct collapse_context *c, struct mem_ops
> (i + 1) * page_size,
> MREMAP_MAYMOVE | MREMAP_FIXED,
> BASE_ADDR + 2 * hpage_pmd_size);
> - if (p == MAP_FAILED) {
> - perror("mremap+unmap");
> - exit(EXIT_FAILURE);
> - }
> + if (p == MAP_FAILED)
> + ksft_exit_fail_msg("mremap+unmap: %s\n", strerror(errno));
>
> p = mremap(BASE_ADDR + 2 * hpage_pmd_size,
> (i + 1) * page_size,
> (i + 1) * page_size + hpage_pmd_size,
> MREMAP_MAYMOVE | MREMAP_FIXED,
> BASE_ADDR - (i + 1) * page_size);
> - if (p == MAP_FAILED) {
> - perror("mremap+alloc");
> - exit(EXIT_FAILURE);
> - }
> + if (p == MAP_FAILED)
> + ksft_exit_fail_msg("mremap+alloc: %s\n", strerror(errno));
> }
>
> + ksft_print_msg("\n");
> +
> ops->cleanup_area(BASE_ADDR, hpage_pmd_size);
> ops->fault(p, 0, hpage_pmd_size);
> if (!ops->check_huge(p, 1))
> @@ -890,23 +844,19 @@ static void collapse_fork(struct collapse_context *c, struct mem_ops *ops)
>
> p = ops->setup_area(1);
>
> - printf("Allocate small page...");
> + ksft_print_msg("Allocate small page...\n");
> ops->fault(p, 0, page_size);
> if (ops->check_huge(p, 0))
> success("OK");
> else
> fail("Fail");
>
> - printf("Share small page over fork()...");
> + ksft_print_msg("Share small page over fork()...\n");
> if (!fork()) {
> /* Do not touch settings on child exit */
> skip_settings_restore = true;
> - exit_status = 0;
>
> - if (ops->check_huge(p, 0))
> - success("OK");
> - else
> - fail("Fail");
> + ksft_test_result(ops->check_huge(p, 0), "%s: child\n", __func__);
>
> ops->fault(p, page_size, 2 * page_size);
> c->collapse("Collapse PTE table with single page shared with parent process",
> @@ -914,13 +864,13 @@ static void collapse_fork(struct collapse_context *c, struct mem_ops *ops)
>
> validate_memory(p, 0, page_size);
> ops->cleanup_area(p, hpage_pmd_size);
> - exit(exit_status);
> + exit(0);
> }
>
> wait(&wstatus);
> - exit_status += WEXITSTATUS(wstatus);
> +// exit_status += WEXITSTATUS(wstatus);
Remove this line
>
> - printf("Check if parent still has small page...");
> + ksft_print_msg("Check if parent still has small page...\n");
> if (ops->check_huge(p, 0))
> success("OK");
> else
> @@ -935,18 +885,14 @@ static void collapse_fork_compound(struct collapse_context *c, struct mem_ops *o
> void *p;
>
> p = alloc_hpage(ops);
> - printf("Share huge page over fork()...");
> + ksft_print_msg("Share huge page over fork()...\n");
> if (!fork()) {
> /* Do not touch settings on child exit */
> skip_settings_restore = true;
> - exit_status = 0;
>
> - if (ops->check_huge(p, 1))
> - success("OK");
> - else
> - fail("Fail");
> + ksft_test_result(ops->check_huge(p, 1), "%s: child\n", __func__);
>
> - printf("Split huge page PMD in child process...");
> + ksft_print_msg("Split huge page PMD in child process...\n");
> madvise(p, page_size, MADV_NOHUGEPAGE);
> madvise(p, hpage_pmd_size, MADV_NOHUGEPAGE);
> if (ops->check_huge(p, 0))
> @@ -963,13 +909,13 @@ static void collapse_fork_compound(struct collapse_context *c, struct mem_ops *o
>
> validate_memory(p, 0, hpage_pmd_size);
> ops->cleanup_area(p, hpage_pmd_size);
> - exit(exit_status);
> + exit(0);
> }
>
> wait(&wstatus);
> - exit_status += WEXITSTATUS(wstatus);
> +// exit_status += WEXITSTATUS(wstatus);
>
> - printf("Check if parent still has huge page...");
> + ksft_print_msg("Check if parent still has huge page...\n");
> if (ops->check_huge(p, 1))
> success("OK");
> else
> @@ -985,19 +931,15 @@ static void collapse_max_ptes_shared(struct collapse_context *c, struct mem_ops
> void *p;
>
> p = alloc_hpage(ops);
> - printf("Share huge page over fork()...");
> + ksft_print_msg("Share huge page over fork()...\n");
> if (!fork()) {
> /* Do not touch settings on child exit */
> skip_settings_restore = true;
> - exit_status = 0;
>
> - if (ops->check_huge(p, 1))
> - success("OK");
> - else
> - fail("Fail");
> + ksft_test_result(ops->check_huge(p, 1), "%s: child\n", __func__);
>
> - printf("Trigger CoW on page %d of %d...",
> - hpage_pmd_nr - max_ptes_shared - 1, hpage_pmd_nr);
> + ksft_print_msg("Trigger CoW on page %d of %d...\n",
> + hpage_pmd_nr - max_ptes_shared - 1, hpage_pmd_nr);
> ops->fault(p, 0, (hpage_pmd_nr - max_ptes_shared - 1) * page_size);
> if (ops->check_huge(p, 0))
> success("OK");
> @@ -1008,8 +950,8 @@ static void collapse_max_ptes_shared(struct collapse_context *c, struct mem_ops
> 1, ops, !c->enforce_pte_scan_limits);
>
> if (c->enforce_pte_scan_limits) {
> - printf("Trigger CoW on page %d of %d...",
> - hpage_pmd_nr - max_ptes_shared, hpage_pmd_nr);
> + ksft_print_msg("Trigger CoW on page %d of %d...\n",
> + hpage_pmd_nr - max_ptes_shared, hpage_pmd_nr);
> ops->fault(p, 0, (hpage_pmd_nr - max_ptes_shared) *
> page_size);
> if (ops->check_huge(p, 0))
> @@ -1023,13 +965,13 @@ static void collapse_max_ptes_shared(struct collapse_context *c, struct mem_ops
>
> validate_memory(p, 0, hpage_pmd_size);
> ops->cleanup_area(p, hpage_pmd_size);
> - exit(exit_status);
> + exit(0);
> }
>
> wait(&wstatus);
> - exit_status += WEXITSTATUS(wstatus);
> +// exit_status += WEXITSTATUS(wstatus);
Remove this line
>
> - printf("Check if parent still has huge page...");
> + ksft_print_msg("Check if parent still has huge page...\n");
> if (ops->check_huge(p, 1))
> success("OK");
> else
> @@ -1083,20 +1025,19 @@ static void madvise_retracted_page_tables(struct collapse_context *c,
>
> static void usage(void)
> {
> - fprintf(stderr, "\nUsage: ./khugepaged [OPTIONS] <test type> [dir]\n\n");
> - fprintf(stderr, "\t<test type>\t: <context>:<mem_type>\n");
> - fprintf(stderr, "\t<context>\t: [all|khugepaged|madvise]\n");
> - fprintf(stderr, "\t<mem_type>\t: [all|anon|file|shmem]\n");
> - fprintf(stderr, "\n\t\"file,all\" mem_type requires [dir] argument\n");
> - fprintf(stderr, "\n\t\"file,all\" mem_type requires kernel built with\n");
> - fprintf(stderr, "\tCONFIG_READ_ONLY_THP_FOR_FS=y\n");
> - fprintf(stderr, "\n\tif [dir] is a (sub)directory of a tmpfs mount, tmpfs must be\n");
> - fprintf(stderr, "\tmounted with huge=madvise option for khugepaged tests to work\n");
> - fprintf(stderr, "\n\tSupported Options:\n");
> - fprintf(stderr, "\t\t-h: This help message.\n");
> - fprintf(stderr, "\t\t-s: mTHP size, expressed as page order.\n");
> - fprintf(stderr, "\t\t Defaults to 0. Use this size for anon allocations.\n");
> - exit(1);
> + ksft_print_msg("\nUsage: ./khugepaged [OPTIONS] <test type> [dir]\n\n");
> + ksft_print_msg("\t<test type>\t: <context>:<mem_type>\n");
> + ksft_print_msg("\t<context>\t: [all|khugepaged|madvise]\n");
> + ksft_print_msg("\t<mem_type>\t: [all|anon|file|shmem]\n");
> + ksft_print_msg("\n\t\"file,all\" mem_type requires [dir] argument\n");
> + ksft_print_msg("\n\t\"file,all\" mem_type requires kernel built with\n");
> + ksft_print_msg("\tCONFIG_READ_ONLY_THP_FOR_FS=y\n");
> + ksft_print_msg("\n\tif [dir] is a (sub)directory of a tmpfs mount, tmpfs must be\n");
> + ksft_print_msg("\tmounted with huge=madvise option for khugepaged tests to work\n");
> + ksft_print_msg("\n\tSupported Options:\n");
> + ksft_print_msg("\t\t-h: This help message.\n");
> + ksft_print_msg("\t\t-s: mTHP size, expressed as page order.\n");
> + ksft_exit_fail_msg("\t\t Defaults to 0. Use this size for anon allocations.\n");
> }
>
> static void parse_test_type(int argc, char **argv)
> @@ -1190,16 +1131,17 @@ int main(int argc, char **argv)
> .read_ahead_kb = 0,
> };
>
> + ksft_print_header();
> + ksft_set_plan(65);
> +
> parse_test_type(argc, argv);
>
> setbuf(stdout, NULL);
>
> page_size = getpagesize();
> hpage_pmd_size = read_pmd_pagesize();
> - if (!hpage_pmd_size) {
> - printf("Reading PMD pagesize failed");
> - exit(EXIT_FAILURE);
> - }
> + if (!hpage_pmd_size)
> + ksft_exit_fail_msg("Reading PMD pagesize failed\n");
> hpage_pmd_nr = hpage_pmd_size / page_size;
> hpage_pmd_order = __builtin_ctz(hpage_pmd_nr);
>
> @@ -1217,7 +1159,7 @@ int main(int argc, char **argv)
>
> #define TEST(t, c, o) do { \
> if (c && o) { \
> - printf("\nRun test: " #t " (%s:%s)\n", c->name, o->name); \
> + ksft_print_msg("Run test: " #t " (%s:%s)\n", c->name, o->name); \
> t(c, o); \
> } \
> } while (0)
> @@ -1281,5 +1223,5 @@ int main(int argc, char **argv)
> TEST(madvise_retracted_page_tables, madvise_context, file_ops);
> TEST(madvise_retracted_page_tables, madvise_context, shmem_ops);
>
> - restore_settings(0);
> + ksft_finished();
> }
--
BR,
Muhammad Usama Anjum