* [PATCH v4 2/7] selftests/mm: hugepage-vmemmap: conform test to TAP format output
2024-01-26 11:21 [PATCH v4 1/7] selftests/mm: hugepage-shm: conform test to TAP format output Muhammad Usama Anjum
@ 2024-01-26 11:21 ` Muhammad Usama Anjum
2024-01-26 11:21 ` [PATCH v4 3/7] selftests/mm: hugetlb-madvise: " Muhammad Usama Anjum
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Muhammad Usama Anjum @ 2024-01-26 11:21 UTC (permalink / raw)
To: Andrew Morton, Shuah Khan
Cc: Muhammad Usama Anjum, kernel, linux-mm, linux-kselftest, linux-kernel
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 v3:
- Rebase to next-20240125
- Update newly updated code
---
tools/testing/selftests/mm/hugepage-vmemmap.c | 39 ++++++++-----------
1 file changed, 16 insertions(+), 23 deletions(-)
diff --git a/tools/testing/selftests/mm/hugepage-vmemmap.c b/tools/testing/selftests/mm/hugepage-vmemmap.c
index 894d28c3dd478..9080e34bb297e 100644
--- a/tools/testing/selftests/mm/hugepage-vmemmap.c
+++ b/tools/testing/selftests/mm/hugepage-vmemmap.c
@@ -11,6 +11,7 @@
#include <sys/mman.h>
#include <fcntl.h>
#include "vm_util.h"
+#include "../kselftest.h"
#define PAGE_COMPOUND_HEAD (1UL << 15)
#define PAGE_COMPOUND_TAIL (1UL << 16)
@@ -77,7 +78,7 @@ static int check_page_flags(unsigned long pfn)
read(fd, &pageflags, sizeof(pageflags));
if ((pageflags & HEAD_PAGE_FLAGS) != HEAD_PAGE_FLAGS) {
close(fd);
- printf("Head page flags (%lx) is invalid\n", pageflags);
+ ksft_print_msg("Head page flags (%lx) is invalid\n", pageflags);
return -1;
}
@@ -91,7 +92,7 @@ static int check_page_flags(unsigned long pfn)
if ((pageflags & TAIL_PAGE_FLAGS) != TAIL_PAGE_FLAGS ||
(pageflags & HEAD_PAGE_FLAGS) == HEAD_PAGE_FLAGS) {
close(fd);
- printf("Tail page flags (%lx) is invalid\n", pageflags);
+ ksft_print_msg("Tail page flags (%lx) is invalid\n", pageflags);
return -1;
}
}
@@ -106,18 +107,17 @@ int main(int argc, char **argv)
void *addr;
unsigned long pfn;
+ ksft_print_header();
+ ksft_set_plan(1);
+
pagesize = psize();
maplength = default_huge_page_size();
- if (!maplength) {
- printf("Unable to determine huge page size\n");
- exit(1);
- }
+ if (!maplength)
+ ksft_exit_fail_msg("Unable to determine huge page size\n");
addr = mmap(MAP_ADDR, maplength, PROT_READ | PROT_WRITE, MAP_FLAGS, -1, 0);
- if (addr == MAP_FAILED) {
- perror("mmap");
- exit(1);
- }
+ if (addr == MAP_FAILED)
+ ksft_exit_fail_msg("mmap: %s\n", strerror(errno));
/* Trigger allocation of HugeTLB page. */
write_bytes(addr, maplength);
@@ -125,23 +125,16 @@ int main(int argc, char **argv)
pfn = virt_to_pfn(addr);
if (pfn == -1UL) {
munmap(addr, maplength);
- perror("virt_to_pfn");
- exit(1);
+ ksft_exit_fail_msg("virt_to_pfn: %s\n", strerror(errno));
}
- printf("Returned address is %p whose pfn is %lx\n", addr, pfn);
+ ksft_print_msg("Returned address is %p whose pfn is %lx\n", addr, pfn);
- if (check_page_flags(pfn) < 0) {
- munmap(addr, maplength);
- perror("check_page_flags");
- exit(1);
- }
+ ksft_test_result(!check_page_flags(pfn), "check_page_flags\n");
/* munmap() length of MAP_HUGETLB memory must be hugepage aligned */
- if (munmap(addr, maplength)) {
- perror("munmap");
- exit(1);
- }
+ if (munmap(addr, maplength))
+ ksft_exit_fail_msg("munmap: %s\n", strerror(errno));
- return 0;
+ ksft_finished();
}
--
2.42.0
^ permalink raw reply [flat|nested] 7+ messages in thread* [PATCH v4 3/7] selftests/mm: hugetlb-madvise: conform test to TAP format output
2024-01-26 11:21 [PATCH v4 1/7] selftests/mm: hugepage-shm: conform test to TAP format output Muhammad Usama Anjum
2024-01-26 11:21 ` [PATCH v4 2/7] selftests/mm: hugepage-vmemmap: " Muhammad Usama Anjum
@ 2024-01-26 11:21 ` Muhammad Usama Anjum
2024-01-26 11:21 ` [PATCH v4 4/7] selftests/mm: khugepaged: " Muhammad Usama Anjum
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Muhammad Usama Anjum @ 2024-01-26 11:21 UTC (permalink / raw)
To: Andrew Morton, Shuah Khan
Cc: Muhammad Usama Anjum, kernel, linux-mm, linux-kselftest, linux-kernel
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 v3:
- Rebased on top of next-20240125
---
tools/testing/selftests/mm/hugetlb-madvise.c | 207 +++++++------------
1 file changed, 80 insertions(+), 127 deletions(-)
diff --git a/tools/testing/selftests/mm/hugetlb-madvise.c b/tools/testing/selftests/mm/hugetlb-madvise.c
index f32d99565c5ea..2d9b27bc0d01d 100644
--- a/tools/testing/selftests/mm/hugetlb-madvise.c
+++ b/tools/testing/selftests/mm/hugetlb-madvise.c
@@ -19,19 +19,14 @@
#include <sys/mman.h>
#include <fcntl.h>
#include "vm_util.h"
+#include "../kselftest.h"
#define MIN_FREE_PAGES 20
#define NR_HUGE_PAGES 10 /* common number of pages to map/allocate */
#define validate_free_pages(exp_free) \
- do { \
- int fhp = get_free_hugepages(); \
- if (fhp != (exp_free)) { \
- printf("Unexpected number of free huge " \
- "pages line %d\n", __LINE__); \
- exit(1); \
- } \
- } while (0)
+ ksft_test_result(get_free_hugepages() == (exp_free), \
+ "Validation of free pages (%d)\n", __LINE__)
unsigned long huge_page_size;
unsigned long base_page_size;
@@ -64,28 +59,27 @@ int main(int argc, char **argv)
int fd;
int ret;
+ ksft_print_header();
+
huge_page_size = default_huge_page_size();
- if (!huge_page_size) {
- printf("Unable to determine huge page size, exiting!\n");
- exit(1);
- }
+ if (!huge_page_size)
+ ksft_exit_fail_msg("Unable to determine huge page size, exiting!\n");
+
base_page_size = sysconf(_SC_PAGE_SIZE);
- if (!huge_page_size) {
- printf("Unable to determine base page size, exiting!\n");
- exit(1);
- }
+ if (!huge_page_size)
+ ksft_exit_fail_msg("Unable to determine base page size, exiting!\n");
free_hugepages = get_free_hugepages();
if (free_hugepages < MIN_FREE_PAGES) {
- printf("Not enough free huge pages to test, exiting!\n");
- exit(1);
+ ksft_print_msg("Not enough free huge pages to test, exiting!\n");
+ ksft_finished();
}
fd = memfd_create(argv[0], MFD_HUGETLB);
- if (fd < 0) {
- perror("memfd_create() failed");
- exit(1);
- }
+ if (fd < 0)
+ ksft_exit_fail_msg("memfd_create() failed\n");
+
+ ksft_set_plan(37);
/*
* Test validity of MADV_DONTNEED addr and length arguments. mmap
@@ -97,16 +91,13 @@ int main(int argc, char **argv)
PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB,
-1, 0);
- if (addr == MAP_FAILED) {
- perror("mmap");
- exit(1);
- }
+ if (addr == MAP_FAILED)
+ ksft_exit_fail_msg("mmap: %s\n", strerror(errno));
+
if (munmap(addr, huge_page_size) ||
- munmap(addr + (NR_HUGE_PAGES + 1) * huge_page_size,
- huge_page_size)) {
- perror("munmap");
- exit(1);
- }
+ munmap(addr + (NR_HUGE_PAGES + 1) * huge_page_size, huge_page_size))
+ ksft_exit_fail_msg("munmap: %s\n", strerror(errno));
+
addr = addr + huge_page_size;
write_fault_pages(addr, NR_HUGE_PAGES);
@@ -114,21 +105,13 @@ int main(int argc, char **argv)
/* addr before mapping should fail */
ret = madvise(addr - base_page_size, NR_HUGE_PAGES * huge_page_size,
- MADV_DONTNEED);
- if (!ret) {
- printf("Unexpected success of madvise call with invalid addr line %d\n",
- __LINE__);
- exit(1);
- }
+ MADV_DONTNEED);
+ ksft_test_result(ret, "The madvise call with invalid address\n");
/* addr + length after mapping should fail */
ret = madvise(addr, (NR_HUGE_PAGES * huge_page_size) + base_page_size,
- MADV_DONTNEED);
- if (!ret) {
- printf("Unexpected success of madvise call with invalid length line %d\n",
- __LINE__);
- exit(1);
- }
+ MADV_DONTNEED);
+ ksft_test_result(ret, "The madvise call with invalid address\n");
(void)munmap(addr, NR_HUGE_PAGES * huge_page_size);
@@ -139,10 +122,9 @@ int main(int argc, char **argv)
PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB,
-1, 0);
- if (addr == MAP_FAILED) {
- perror("mmap");
- exit(1);
- }
+ if (addr == MAP_FAILED)
+ ksft_exit_fail_msg("mmap: %s\n", strerror(errno));
+
write_fault_pages(addr, NR_HUGE_PAGES);
validate_free_pages(free_hugepages - NR_HUGE_PAGES);
@@ -150,19 +132,12 @@ int main(int argc, char **argv)
ret = madvise(addr + base_page_size,
NR_HUGE_PAGES * huge_page_size - base_page_size,
MADV_DONTNEED);
- if (!ret) {
- printf("Unexpected success of madvise call with unaligned start address %d\n",
- __LINE__);
- exit(1);
- }
+ ksft_test_result(ret, "The madvise call with unaligned start address\n");
/* addr + length should be aligned down to huge page size */
- if (madvise(addr,
- ((NR_HUGE_PAGES - 1) * huge_page_size) + base_page_size,
- MADV_DONTNEED)) {
- perror("madvise");
- exit(1);
- }
+ ret = madvise(addr, ((NR_HUGE_PAGES - 1) * huge_page_size) + base_page_size,
+ MADV_DONTNEED);
+ ksft_test_result(!ret, "The madvise call with aligned start address\n");
/* should free all but last page in mapping */
validate_free_pages(free_hugepages - 1);
@@ -177,17 +152,14 @@ int main(int argc, char **argv)
PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB,
-1, 0);
- if (addr == MAP_FAILED) {
- perror("mmap");
- exit(1);
- }
+ if (addr == MAP_FAILED)
+ ksft_exit_fail_msg("mmap: %s\n", strerror(errno));
+
write_fault_pages(addr, NR_HUGE_PAGES);
validate_free_pages(free_hugepages - NR_HUGE_PAGES);
- if (madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED)) {
- perror("madvise");
- exit(1);
- }
+ ret = madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED);
+ ksft_test_result(!ret, "The madvise MADV_DONTNEED on anonymous private mapping\n");
/* should free all pages in mapping */
validate_free_pages(free_hugepages);
@@ -197,29 +169,25 @@ int main(int argc, char **argv)
/*
* Test MADV_DONTNEED on private mapping of hugetlb file
*/
- if (fallocate(fd, 0, 0, NR_HUGE_PAGES * huge_page_size)) {
- perror("fallocate");
- exit(1);
- }
+ if (fallocate(fd, 0, 0, NR_HUGE_PAGES * huge_page_size))
+ ksft_exit_fail_msg("fallocate: %s\n", strerror(errno));
+
validate_free_pages(free_hugepages - NR_HUGE_PAGES);
addr = mmap(NULL, NR_HUGE_PAGES * huge_page_size,
PROT_READ | PROT_WRITE,
MAP_PRIVATE, fd, 0);
- if (addr == MAP_FAILED) {
- perror("mmap");
- exit(1);
- }
+ if (addr == MAP_FAILED)
+ ksft_exit_fail_msg("mmap: %s\n", strerror(errno));
/* read should not consume any pages */
read_fault_pages(addr, NR_HUGE_PAGES);
validate_free_pages(free_hugepages - NR_HUGE_PAGES);
/* madvise should not free any pages */
- if (madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED)) {
- perror("madvise");
- exit(1);
- }
+ ret = madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED);
+ ksft_test_result(!ret, "The madvise MADV_DONTNEED on private mapping of file\n");
+
validate_free_pages(free_hugepages - NR_HUGE_PAGES);
/* writes should allocate private pages */
@@ -227,10 +195,9 @@ int main(int argc, char **argv)
validate_free_pages(free_hugepages - (2 * NR_HUGE_PAGES));
/* madvise should free private pages */
- if (madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED)) {
- perror("madvise");
- exit(1);
- }
+ ret = madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED);
+ ksft_test_result(!ret, "The madvise MADV_DONTNEED on private mapping of file\n");
+
validate_free_pages(free_hugepages - NR_HUGE_PAGES);
/* writes should allocate private pages */
@@ -245,10 +212,9 @@ int main(int argc, char **argv)
* implementation.
*/
if (fallocate(fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
- 0, NR_HUGE_PAGES * huge_page_size)) {
- perror("fallocate");
- exit(1);
- }
+ 0, NR_HUGE_PAGES * huge_page_size))
+ ksft_exit_fail_msg("fallocate: %s\n", strerror(errno));
+
validate_free_pages(free_hugepages);
(void)munmap(addr, NR_HUGE_PAGES * huge_page_size);
@@ -256,29 +222,25 @@ int main(int argc, char **argv)
/*
* Test MADV_DONTNEED on shared mapping of hugetlb file
*/
- if (fallocate(fd, 0, 0, NR_HUGE_PAGES * huge_page_size)) {
- perror("fallocate");
- exit(1);
- }
+ if (fallocate(fd, 0, 0, NR_HUGE_PAGES * huge_page_size))
+ ksft_exit_fail_msg("fallocate: %s\n", strerror(errno));
+
validate_free_pages(free_hugepages - NR_HUGE_PAGES);
addr = mmap(NULL, NR_HUGE_PAGES * huge_page_size,
PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
- if (addr == MAP_FAILED) {
- perror("mmap");
- exit(1);
- }
+ if (addr == MAP_FAILED)
+ ksft_exit_fail_msg("mmap: %s\n", strerror(errno));
/* write should not consume any pages */
write_fault_pages(addr, NR_HUGE_PAGES);
validate_free_pages(free_hugepages - NR_HUGE_PAGES);
/* madvise should not free any pages */
- if (madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED)) {
- perror("madvise");
- exit(1);
- }
+ ret = madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED);
+ ksft_test_result(!ret, "The madvise MADV_DONTNEED on shared mapping of file\n");
+
validate_free_pages(free_hugepages - NR_HUGE_PAGES);
/*
@@ -286,29 +248,25 @@ int main(int argc, char **argv)
*
* madvise is same as hole punch and should free all pages.
*/
- if (madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_REMOVE)) {
- perror("madvise");
- exit(1);
- }
+ ret = madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_REMOVE);
+ ksft_test_result(!ret, "The madvise MADV_REMOVE on shared mapping of file\n");
+
validate_free_pages(free_hugepages);
(void)munmap(addr, NR_HUGE_PAGES * huge_page_size);
/*
* Test MADV_REMOVE on shared and private mapping of hugetlb file
*/
- if (fallocate(fd, 0, 0, NR_HUGE_PAGES * huge_page_size)) {
- perror("fallocate");
- exit(1);
- }
+ if (fallocate(fd, 0, 0, NR_HUGE_PAGES * huge_page_size))
+ ksft_exit_fail_msg("fallocate: %s\n", strerror(errno));
+
validate_free_pages(free_hugepages - NR_HUGE_PAGES);
addr = mmap(NULL, NR_HUGE_PAGES * huge_page_size,
PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
- if (addr == MAP_FAILED) {
- perror("mmap");
- exit(1);
- }
+ if (addr == MAP_FAILED)
+ ksft_exit_fail_msg("mmap: %s\n", strerror(errno));
/* shared write should not consume any additional pages */
write_fault_pages(addr, NR_HUGE_PAGES);
@@ -317,10 +275,8 @@ int main(int argc, char **argv)
addr2 = mmap(NULL, NR_HUGE_PAGES * huge_page_size,
PROT_READ | PROT_WRITE,
MAP_PRIVATE, fd, 0);
- if (addr2 == MAP_FAILED) {
- perror("mmap");
- exit(1);
- }
+ if (addr2 == MAP_FAILED)
+ ksft_exit_fail_msg("mmap: %s\n", strerror(errno));
/* private read should not consume any pages */
read_fault_pages(addr2, NR_HUGE_PAGES);
@@ -331,17 +287,15 @@ int main(int argc, char **argv)
validate_free_pages(free_hugepages - (2 * NR_HUGE_PAGES));
/* madvise of shared mapping should not free any pages */
- if (madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED)) {
- perror("madvise");
- exit(1);
- }
+ ret = madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED);
+ ksft_test_result(!ret, "The madvise MADV_REMOVE on shared mapping of file\n");
+
validate_free_pages(free_hugepages - (2 * NR_HUGE_PAGES));
/* madvise of private mapping should free private pages */
- if (madvise(addr2, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED)) {
- perror("madvise");
- exit(1);
- }
+ ret = madvise(addr2, NR_HUGE_PAGES * huge_page_size, MADV_DONTNEED);
+ ksft_test_result(!ret, "The madvise MADV_REMOVE on shared mapping of file\n");
+
validate_free_pages(free_hugepages - NR_HUGE_PAGES);
/* private write should consume additional pages again */
@@ -353,15 +307,14 @@ int main(int argc, char **argv)
* not correct. private pages should not be freed, but this is
* expected. See comment associated with FALLOC_FL_PUNCH_HOLE call.
*/
- if (madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_REMOVE)) {
- perror("madvise");
- exit(1);
- }
+ ret = madvise(addr, NR_HUGE_PAGES * huge_page_size, MADV_REMOVE);
+ ksft_test_result(!ret, "The madvise MADV_REMOVE on shared mapping of file\n");
+
validate_free_pages(free_hugepages);
(void)munmap(addr, NR_HUGE_PAGES * huge_page_size);
(void)munmap(addr2, NR_HUGE_PAGES * huge_page_size);
close(fd);
- return 0;
+ ksft_finished();
}
--
2.42.0
^ permalink raw reply [flat|nested] 7+ messages in thread* [PATCH v4 4/7] selftests/mm: khugepaged: conform test to TAP format output
2024-01-26 11:21 [PATCH v4 1/7] selftests/mm: hugepage-shm: conform test to TAP format output Muhammad Usama Anjum
2024-01-26 11:21 ` [PATCH v4 2/7] selftests/mm: hugepage-vmemmap: " Muhammad Usama Anjum
2024-01-26 11:21 ` [PATCH v4 3/7] selftests/mm: hugetlb-madvise: " Muhammad Usama Anjum
@ 2024-01-26 11:21 ` Muhammad Usama Anjum
2024-01-26 11:21 ` [PATCH v4 5/7] selftests/mm: hugetlb-read-hwpoison: " Muhammad Usama Anjum
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Muhammad Usama Anjum @ 2024-01-26 11:21 UTC (permalink / raw)
To: Andrew Morton, Shuah Khan
Cc: Muhammad Usama Anjum, kernel, linux-mm, linux-kselftest, linux-kernel
Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.
Skip test if root privileges aren't provided.
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
---
Changes since v3:
- Rebased on top of next-20240125
- Skip test if root privileges aren't present
Changes since v1:
- Remove commented out lines of code
---
tools/testing/selftests/mm/khugepaged.c | 385 ++++++++++--------------
1 file changed, 163 insertions(+), 222 deletions(-)
diff --git a/tools/testing/selftests/mm/khugepaged.c b/tools/testing/selftests/mm/khugepaged.c
index 829320a519e72..d51fdaee7dc6a 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 +864,12 @@ 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);
- 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
@@ -931,22 +880,17 @@ static void collapse_fork(struct collapse_context *c, struct mem_ops *ops)
static void collapse_fork_compound(struct collapse_context *c, struct mem_ops *ops)
{
- int wstatus;
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 +907,12 @@ 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);
+ wait(NULL);
- 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
@@ -981,23 +924,18 @@ static void collapse_fork_compound(struct collapse_context *c, struct mem_ops *o
static void collapse_max_ptes_shared(struct collapse_context *c, struct mem_ops *ops)
{
int max_ptes_shared = thp_read_num("khugepaged/max_ptes_shared");
- int wstatus;
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 +946,8 @@ 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 +961,12 @@ 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);
+ wait(NULL);
- 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 +1020,19 @@ 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 +1126,21 @@ int main(int argc, char **argv)
.read_ahead_kb = 0,
};
+ ksft_print_header();
+
+ if (getuid())
+ ksft_finished();
+
+ 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 +1158,7 @@ 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 +1222,5 @@ 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();
}
--
2.42.0
^ permalink raw reply [flat|nested] 7+ messages in thread* [PATCH v4 5/7] selftests/mm: hugetlb-read-hwpoison: conform test to TAP format output
2024-01-26 11:21 [PATCH v4 1/7] selftests/mm: hugepage-shm: conform test to TAP format output Muhammad Usama Anjum
` (2 preceding siblings ...)
2024-01-26 11:21 ` [PATCH v4 4/7] selftests/mm: khugepaged: " Muhammad Usama Anjum
@ 2024-01-26 11:21 ` Muhammad Usama Anjum
2024-01-26 11:21 ` [PATCH v4 6/7] selftests/mm: ksm_tests: " Muhammad Usama Anjum
2024-01-26 11:21 ` [PATCH v4 7/7] selftests/mm: config: add missing configs Muhammad Usama Anjum
5 siblings, 0 replies; 7+ messages in thread
From: Muhammad Usama Anjum @ 2024-01-26 11:21 UTC (permalink / raw)
To: Andrew Morton, Shuah Khan
Cc: Muhammad Usama Anjum, kernel, Jiaqi Yan, linux-mm,
linux-kselftest, linux-kernel
Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.
Reviewed-by: Jiaqi Yan <jiaqiyan@google.com>
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
---
Changes since v3:
- Rebased on top of next-20240125
- Added reviewed-by tag
- Tested this on top of lates next which has the fix inside the kernel
Changes since v2:
- Use ksft_perror as short hand instead of missing strerror(errno) at
one place
---
.../selftests/mm/hugetlb-read-hwpoison.c | 116 ++++++++----------
1 file changed, 54 insertions(+), 62 deletions(-)
diff --git a/tools/testing/selftests/mm/hugetlb-read-hwpoison.c b/tools/testing/selftests/mm/hugetlb-read-hwpoison.c
index ba6cc6f9cabcd..23b41b88c6aff 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;
}
}
@@ -75,21 +75,21 @@ 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");
+ ksft_perror(PREFIX ERROR_PREFIX "seek failed");
return false;
}
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");
+ ksft_perror(PREFIX ERROR_PREFIX "read failed");
break;
}
++val;
@@ -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_perror(PREFIX ERROR_PREFIX "read failed");
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 +142,14 @@ 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_perror(PREFIX ERROR_PREFIX "ftruncate failed");
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_perror(PREFIX ERROR_PREFIX "mmap for primary mapping failed");
goto done;
}
@@ -162,7 +162,7 @@ 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_perror(PREFIX ERROR_PREFIX "ftruncate back to 0 failed");
status = TEST_FAILED;
}
@@ -179,14 +179,14 @@ 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_perror(PREFIX ERROR_PREFIX "ftruncate failed");
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_perror(PREFIX ERROR_PREFIX "mmap for primary mapping failed");
goto done;
}
@@ -201,7 +201,7 @@ 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_perror(PREFIX ERROR_PREFIX "MADV_HWPOISON failed");
goto unmap;
}
@@ -228,7 +228,7 @@ 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_perror(PREFIX ERROR_PREFIX "ftruncate back to 0 failed");
status = TEST_FAILED;
}
@@ -240,27 +240,32 @@ 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 +278,37 @@ 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
^ permalink raw reply [flat|nested] 7+ messages in thread* [PATCH v4 6/7] selftests/mm: ksm_tests: conform test to TAP format output
2024-01-26 11:21 [PATCH v4 1/7] selftests/mm: hugepage-shm: conform test to TAP format output Muhammad Usama Anjum
` (3 preceding siblings ...)
2024-01-26 11:21 ` [PATCH v4 5/7] selftests/mm: hugetlb-read-hwpoison: " Muhammad Usama Anjum
@ 2024-01-26 11:21 ` Muhammad Usama Anjum
2024-01-26 11:21 ` [PATCH v4 7/7] selftests/mm: config: add missing configs Muhammad Usama Anjum
5 siblings, 0 replies; 7+ messages in thread
From: Muhammad Usama Anjum @ 2024-01-26 11:21 UTC (permalink / raw)
To: Andrew Morton, Shuah Khan
Cc: Muhammad Usama Anjum, kernel, linux-mm, linux-kselftest, linux-kernel
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 v3:
- Rebased on top of next-20240125
- Resolves minor conflict
---
tools/testing/selftests/mm/ksm_tests.c | 682 ++++++++++---------------
1 file changed, 276 insertions(+), 406 deletions(-)
diff --git a/tools/testing/selftests/mm/ksm_tests.c b/tools/testing/selftests/mm/ksm_tests.c
index b748c48908d9d..3de360e8c06ce 100644
--- a/tools/testing/selftests/mm/ksm_tests.c
+++ b/tools/testing/selftests/mm/ksm_tests.c
@@ -56,42 +56,34 @@ enum ksm_test_name {
int debug;
-static int ksm_write_sysfs(const char *file_path, unsigned long val)
+static void ksm_write_sysfs(const char *file_path, unsigned long val)
{
FILE *f = fopen(file_path, "w");
- if (!f) {
- fprintf(stderr, "f %s\n", file_path);
- perror("fopen");
- return 1;
- }
+ if (!f)
+ ksft_exit_fail_msg("fopen %s: %s\n", file_path, strerror(errno));
+
if (fprintf(f, "%lu", val) < 0) {
- perror("fprintf");
fclose(f);
- return 1;
+ ksft_exit_fail_msg("fprintf: %s\n", strerror(errno));
}
- fclose(f);
- return 0;
+ fclose(f);
}
-static int ksm_read_sysfs(const char *file_path, unsigned long *val)
+static void ksm_read_sysfs(const char *file_path, unsigned long *val)
{
FILE *f = fopen(file_path, "r");
- if (!f) {
- fprintf(stderr, "f %s\n", file_path);
- perror("fopen");
- return 1;
- }
+ if (!f)
+ ksft_exit_fail_msg("fopen %s: %s\n", file_path, strerror(errno));
+
if (fscanf(f, "%lu", val) != 1) {
- perror("fscanf");
fclose(f);
- return 1;
+ ksft_exit_fail_msg("fscanf: %s\n", strerror(errno));
}
- fclose(f);
- return 0;
+ fclose(f);
}
static void ksm_print_sysfs(void)
@@ -101,26 +93,25 @@ static void ksm_print_sysfs(void)
unsigned long stable_node_chains, stable_node_dups;
long general_profit;
- if (ksm_read_sysfs(KSM_FP("pages_shared"), &pages_shared) ||
- ksm_read_sysfs(KSM_FP("pages_sharing"), &pages_sharing) ||
- ksm_read_sysfs(KSM_FP("max_page_sharing"), &max_page_sharing) ||
- ksm_read_sysfs(KSM_FP("full_scans"), &full_scans) ||
- ksm_read_sysfs(KSM_FP("pages_unshared"), &pages_unshared) ||
- ksm_read_sysfs(KSM_FP("pages_volatile"), &pages_volatile) ||
- ksm_read_sysfs(KSM_FP("stable_node_chains"), &stable_node_chains) ||
- ksm_read_sysfs(KSM_FP("stable_node_dups"), &stable_node_dups) ||
- ksm_read_sysfs(KSM_FP("general_profit"), (unsigned long *)&general_profit))
- return;
-
- printf("pages_shared : %lu\n", pages_shared);
- printf("pages_sharing : %lu\n", pages_sharing);
- printf("max_page_sharing : %lu\n", max_page_sharing);
- printf("full_scans : %lu\n", full_scans);
- printf("pages_unshared : %lu\n", pages_unshared);
- printf("pages_volatile : %lu\n", pages_volatile);
- printf("stable_node_chains: %lu\n", stable_node_chains);
- printf("stable_node_dups : %lu\n", stable_node_dups);
- printf("general_profit : %ld\n", general_profit);
+ ksm_read_sysfs(KSM_FP("pages_shared"), &pages_shared);
+ ksm_read_sysfs(KSM_FP("pages_sharing"), &pages_sharing);
+ ksm_read_sysfs(KSM_FP("max_page_sharing"), &max_page_sharing);
+ ksm_read_sysfs(KSM_FP("full_scans"), &full_scans);
+ ksm_read_sysfs(KSM_FP("pages_unshared"), &pages_unshared);
+ ksm_read_sysfs(KSM_FP("pages_volatile"), &pages_volatile);
+ ksm_read_sysfs(KSM_FP("stable_node_chains"), &stable_node_chains);
+ ksm_read_sysfs(KSM_FP("stable_node_dups"), &stable_node_dups);
+ ksm_read_sysfs(KSM_FP("general_profit"), (unsigned long *)&general_profit);
+
+ ksft_print_msg("pages_shared : %lu\n", pages_shared);
+ ksft_print_msg("pages_sharing : %lu\n", pages_sharing);
+ ksft_print_msg("max_page_sharing : %lu\n", max_page_sharing);
+ ksft_print_msg("full_scans : %lu\n", full_scans);
+ ksft_print_msg("pages_unshared : %lu\n", pages_unshared);
+ ksft_print_msg("pages_volatile : %lu\n", pages_volatile);
+ ksft_print_msg("stable_node_chains: %lu\n", stable_node_chains);
+ ksft_print_msg("stable_node_dups : %lu\n", stable_node_dups);
+ ksft_print_msg("general_profit : %ld\n", general_profit);
}
static void ksm_print_procfs(void)
@@ -129,14 +120,11 @@ static void ksm_print_procfs(void)
char buffer[512];
FILE *f = fopen(file_name, "r");
- if (!f) {
- fprintf(stderr, "f %s\n", file_name);
- perror("fopen");
- return;
- }
+ if (!f)
+ ksft_exit_fail_msg("fopen %s: %s\n", file_name, strerror(errno));
while (fgets(buffer, sizeof(buffer), f))
- printf("%s", buffer);
+ ksft_exit_fail_msg("%s", buffer);
fclose(f);
}
@@ -157,132 +145,111 @@ static int str_to_prot(char *prot_str)
static void print_help(void)
{
- printf("usage: ksm_tests [-h] <test type> [-a prot] [-p page_count] [-l timeout]\n"
- "[-z use_zero_pages] [-m merge_across_nodes] [-s size]\n");
-
- printf("Supported <test type>:\n"
- " -M (page merging)\n"
- " -Z (zero pages merging)\n"
- " -N (merging of pages in different NUMA nodes)\n"
- " -U (page unmerging)\n"
- " -P evaluate merging time and speed.\n"
- " For this test, the size of duplicated memory area (in MiB)\n"
- " must be provided using -s option\n"
- " -H evaluate merging time and speed of area allocated mostly with huge pages\n"
- " For this test, the size of duplicated memory area (in MiB)\n"
- " must be provided using -s option\n"
- " -D evaluate unmerging time and speed when disabling KSM.\n"
- " For this test, the size of duplicated memory area (in MiB)\n"
- " must be provided using -s option\n"
- " -C evaluate the time required to break COW of merged pages.\n\n");
-
- printf(" -a: specify the access protections of pages.\n"
- " <prot> must be of the form [rwx].\n"
- " Default: %s\n", KSM_PROT_STR_DEFAULT);
- printf(" -p: specify the number of pages to test.\n"
- " Default: %ld\n", KSM_PAGE_COUNT_DEFAULT);
- printf(" -l: limit the maximum running time (in seconds) for a test.\n"
- " Default: %d seconds\n", KSM_SCAN_LIMIT_SEC_DEFAULT);
- printf(" -z: change use_zero_pages tunable\n"
- " Default: %d\n", KSM_USE_ZERO_PAGES_DEFAULT);
- printf(" -m: change merge_across_nodes tunable\n"
- " Default: %d\n", KSM_MERGE_ACROSS_NODES_DEFAULT);
- printf(" -d: turn debugging output on\n");
- printf(" -s: the size of duplicated memory area (in MiB)\n");
- printf(" -t: KSM merge type\n"
- " Default: 0\n"
- " 0: madvise merging\n"
- " 1: prctl merging\n");
-
- exit(0);
+ ksft_print_msg("usage: ksm_tests [-h] <test type> [-a prot] [-p page_count] [-l timeout]\n"
+ "[-z use_zero_pages] [-m merge_across_nodes] [-s size]\n");
+
+ ksft_print_msg("Supported <test type>:\n"
+ " -M (page merging)\n"
+ " -Z (zero pages merging)\n"
+ " -N (merging of pages in different NUMA nodes)\n"
+ " -U (page unmerging)\n"
+ " -P evaluate merging time and speed.\n"
+ " For this test, the size of duplicated memory area (in MiB)\n"
+ " must be provided using -s option\n"
+ " -H evaluate merging time and speed of area allocated mostly with huge pages\n"
+ " For this test, the size of duplicated memory area (in MiB)\n"
+ " must be provided using -s option\n"
+ " -D evaluate unmerging time and speed when disabling KSM.\n"
+ " For this test, the size of duplicated memory area (in MiB)\n"
+ " must be provided using -s option\n"
+ " -C evaluate the time required to break COW of merged pages.\n\n");
+
+ ksft_print_msg(" -a: specify the access protections of pages.\n"
+ " <prot> must be of the form [rwx].\n"
+ " Default: %s\n", KSM_PROT_STR_DEFAULT);
+ ksft_print_msg(" -p: specify the number of pages to test.\n"
+ " Default: %ld\n", KSM_PAGE_COUNT_DEFAULT);
+ ksft_print_msg(" -l: limit the maximum running time (in seconds) for a test.\n"
+ " Default: %d seconds\n", KSM_SCAN_LIMIT_SEC_DEFAULT);
+ ksft_print_msg(" -z: change use_zero_pages tunable\n"
+ " Default: %d\n", KSM_USE_ZERO_PAGES_DEFAULT);
+ ksft_print_msg(" -m: change merge_across_nodes tunable\n"
+ " Default: %d\n", KSM_MERGE_ACROSS_NODES_DEFAULT);
+ ksft_print_msg(" -d: turn debugging output on\n");
+ ksft_print_msg(" -s: the size of duplicated memory area (in MiB)\n");
+ ksft_exit_fail_msg(" -t: KSM merge type\n"
+ " Default: 0\n"
+ " 0: madvise merging\n"
+ " 1: prctl merging\n");
}
-static void *allocate_memory(void *ptr, int prot, int mapping, char data, size_t map_size)
+static void *allocate_memory(void *ptr, int prot, int mapping, char data, size_t map_size)
{
void *map_ptr = mmap(ptr, map_size, PROT_WRITE, mapping, -1, 0);
- if (!map_ptr) {
- perror("mmap");
- return NULL;
- }
+ if (!map_ptr)
+ ksft_exit_fail_msg("mmap: %s\n", strerror(errno));
+
memset(map_ptr, data, map_size);
if (mprotect(map_ptr, map_size, prot)) {
- perror("mprotect");
munmap(map_ptr, map_size);
- return NULL;
+ ksft_exit_fail_msg("mprotect: %s\n", strerror(errno));
}
return map_ptr;
}
-static int ksm_do_scan(int scan_count, struct timespec start_time, int timeout)
+static void ksm_do_scan(int scan_count, struct timespec start_time, int timeout)
{
struct timespec cur_time;
unsigned long cur_scan, init_scan;
- if (ksm_read_sysfs(KSM_FP("full_scans"), &init_scan))
- return 1;
+ ksm_read_sysfs(KSM_FP("full_scans"), &init_scan);
+
cur_scan = init_scan;
while (cur_scan < init_scan + scan_count) {
- if (ksm_read_sysfs(KSM_FP("full_scans"), &cur_scan))
- return 1;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &cur_time)) {
- perror("clock_gettime");
- return 1;
- }
- if ((cur_time.tv_sec - start_time.tv_sec) > timeout) {
- printf("Scan time limit exceeded\n");
- return 1;
- }
- }
+ ksm_read_sysfs(KSM_FP("full_scans"), &cur_scan);
+
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &cur_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
- return 0;
+ if ((cur_time.tv_sec - start_time.tv_sec) > timeout)
+ ksft_exit_fail_msg("Scan time limit exceeded\n");
+ }
}
-static int ksm_merge_pages(int merge_type, void *addr, size_t size,
- struct timespec start_time, int timeout)
+static void ksm_merge_pages(int merge_type, void *addr, size_t size,
+ struct timespec start_time, int timeout)
{
if (merge_type == KSM_MERGE_MADVISE) {
- if (madvise(addr, size, MADV_MERGEABLE)) {
- perror("madvise");
- return 1;
- }
+ if (madvise(addr, size, MADV_MERGEABLE))
+ ksft_exit_fail_msg("madvise: %s", strerror(errno));
} else if (merge_type == KSM_MERGE_PRCTL) {
- if (prctl(PR_SET_MEMORY_MERGE, 1, 0, 0, 0)) {
- perror("prctl");
- return 1;
- }
+ if (prctl(PR_SET_MEMORY_MERGE, 1, 0, 0, 0))
+ ksft_exit_fail_msg("prctl: %s\n", strerror(errno));
}
- if (ksm_write_sysfs(KSM_FP("run"), 1))
- return 1;
+ ksm_write_sysfs(KSM_FP("run"), 1);
/* Since merging occurs only after 2 scans, make sure to get at least 2 full scans */
- if (ksm_do_scan(2, start_time, timeout))
- return 1;
-
- return 0;
+ ksm_do_scan(2, start_time, timeout);
}
-static int ksm_unmerge_pages(void *addr, size_t size,
- struct timespec start_time, int timeout)
+static void ksm_unmerge_pages(void *addr, size_t size,
+ struct timespec start_time, int timeout)
{
- if (madvise(addr, size, MADV_UNMERGEABLE)) {
- perror("madvise");
- return 1;
- }
- return 0;
+ if (madvise(addr, size, MADV_UNMERGEABLE))
+ ksft_exit_fail_msg("madvise: %s\n", strerror(errno));
}
static bool assert_ksm_pages_count(long dupl_page_count)
{
unsigned long max_page_sharing, pages_sharing, pages_shared;
- if (ksm_read_sysfs(KSM_FP("pages_shared"), &pages_shared) ||
- ksm_read_sysfs(KSM_FP("pages_sharing"), &pages_sharing) ||
- ksm_read_sysfs(KSM_FP("max_page_sharing"), &max_page_sharing))
- return false;
+ ksm_read_sysfs(KSM_FP("pages_shared"), &pages_shared);
+ ksm_read_sysfs(KSM_FP("pages_sharing"), &pages_sharing);
+ ksm_read_sysfs(KSM_FP("max_page_sharing"), &max_page_sharing);
if (debug) {
ksm_print_sysfs();
@@ -312,133 +279,96 @@ static bool assert_ksm_pages_count(long dupl_page_count)
return false;
}
-static int ksm_save_def(struct ksm_sysfs *ksm_sysfs)
+static void ksm_save_def(struct ksm_sysfs *ksm_sysfs)
{
- if (ksm_read_sysfs(KSM_FP("max_page_sharing"), &ksm_sysfs->max_page_sharing) ||
- numa_available() ? 0 :
- ksm_read_sysfs(KSM_FP("merge_across_nodes"), &ksm_sysfs->merge_across_nodes) ||
- ksm_read_sysfs(KSM_FP("sleep_millisecs"), &ksm_sysfs->sleep_millisecs) ||
- ksm_read_sysfs(KSM_FP("pages_to_scan"), &ksm_sysfs->pages_to_scan) ||
- ksm_read_sysfs(KSM_FP("run"), &ksm_sysfs->run) ||
- ksm_read_sysfs(KSM_FP("stable_node_chains_prune_millisecs"),
- &ksm_sysfs->stable_node_chains_prune_millisecs) ||
- ksm_read_sysfs(KSM_FP("use_zero_pages"), &ksm_sysfs->use_zero_pages))
- return 1;
-
- return 0;
+ ksm_read_sysfs(KSM_FP("max_page_sharing"), &ksm_sysfs->max_page_sharing);
+ if (numa_available())
+ ksm_read_sysfs(KSM_FP("merge_across_nodes"), &ksm_sysfs->merge_across_nodes);
+ ksm_read_sysfs(KSM_FP("sleep_millisecs"), &ksm_sysfs->sleep_millisecs);
+ ksm_read_sysfs(KSM_FP("pages_to_scan"), &ksm_sysfs->pages_to_scan);
+ ksm_read_sysfs(KSM_FP("run"), &ksm_sysfs->run);
+ ksm_read_sysfs(KSM_FP("stable_node_chains_prune_millisecs"),
+ &ksm_sysfs->stable_node_chains_prune_millisecs);
+ ksm_read_sysfs(KSM_FP("use_zero_pages"), &ksm_sysfs->use_zero_pages);
}
-static int ksm_restore(struct ksm_sysfs *ksm_sysfs)
+static void ksm_restore(struct ksm_sysfs *ksm_sysfs)
{
- if (ksm_write_sysfs(KSM_FP("max_page_sharing"), ksm_sysfs->max_page_sharing) ||
- numa_available() ? 0 :
- ksm_write_sysfs(KSM_FP("merge_across_nodes"), ksm_sysfs->merge_across_nodes) ||
- ksm_write_sysfs(KSM_FP("pages_to_scan"), ksm_sysfs->pages_to_scan) ||
- ksm_write_sysfs(KSM_FP("run"), ksm_sysfs->run) ||
- ksm_write_sysfs(KSM_FP("sleep_millisecs"), ksm_sysfs->sleep_millisecs) ||
- ksm_write_sysfs(KSM_FP("stable_node_chains_prune_millisecs"),
- ksm_sysfs->stable_node_chains_prune_millisecs) ||
- ksm_write_sysfs(KSM_FP("use_zero_pages"), ksm_sysfs->use_zero_pages))
- return 1;
-
- return 0;
+ ksm_write_sysfs(KSM_FP("max_page_sharing"), ksm_sysfs->max_page_sharing);
+ if (numa_available())
+ ksm_write_sysfs(KSM_FP("merge_across_nodes"), ksm_sysfs->merge_across_nodes);
+
+ ksm_write_sysfs(KSM_FP("pages_to_scan"), ksm_sysfs->pages_to_scan);
+ ksm_write_sysfs(KSM_FP("run"), ksm_sysfs->run);
+ ksm_write_sysfs(KSM_FP("sleep_millisecs"), ksm_sysfs->sleep_millisecs);
+ ksm_write_sysfs(KSM_FP("stable_node_chains_prune_millisecs"),
+ ksm_sysfs->stable_node_chains_prune_millisecs);
+ ksm_write_sysfs(KSM_FP("use_zero_pages"), ksm_sysfs->use_zero_pages);
}
-static int check_ksm_merge(int merge_type, int mapping, int prot,
- long page_count, int timeout, size_t page_size)
+static void check_ksm_merge(int merge_type, int mapping, int prot,
+ long page_count, int timeout, size_t page_size)
{
void *map_ptr;
struct timespec start_time;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time)) {
- perror("clock_gettime");
- return KSFT_FAIL;
- }
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
/* fill pages with the same data and merge them */
map_ptr = allocate_memory(NULL, prot, mapping, '*', page_size * page_count);
- if (!map_ptr)
- return KSFT_FAIL;
- if (ksm_merge_pages(merge_type, map_ptr, page_size * page_count, start_time, timeout))
- goto err_out;
+ ksm_merge_pages(merge_type, map_ptr, page_size * page_count, start_time, timeout);
/* verify that the right number of pages are merged */
- if (assert_ksm_pages_count(page_count)) {
- printf("OK\n");
- munmap(map_ptr, page_size * page_count);
- if (merge_type == KSM_MERGE_PRCTL)
- prctl(PR_SET_MEMORY_MERGE, 0, 0, 0, 0);
- return KSFT_PASS;
- }
-
-err_out:
- printf("Not OK\n");
+ ksft_test_result(assert_ksm_pages_count(page_count), "%s\n", __func__);
munmap(map_ptr, page_size * page_count);
- return KSFT_FAIL;
+ if (merge_type == KSM_MERGE_PRCTL)
+ prctl(PR_SET_MEMORY_MERGE, 0, 0, 0, 0);
}
-static int check_ksm_unmerge(int merge_type, int mapping, int prot, int timeout, size_t page_size)
+static void check_ksm_unmerge(int merge_type, int mapping, int prot, int timeout, size_t page_size)
{
void *map_ptr;
struct timespec start_time;
int page_count = 2;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time)) {
- perror("clock_gettime");
- return KSFT_FAIL;
- }
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
/* fill pages with the same data and merge them */
map_ptr = allocate_memory(NULL, prot, mapping, '*', page_size * page_count);
- if (!map_ptr)
- return KSFT_FAIL;
- if (ksm_merge_pages(merge_type, map_ptr, page_size * page_count, start_time, timeout))
- goto err_out;
+ ksm_merge_pages(merge_type, map_ptr, page_size * page_count, start_time, timeout);
/* change 1 byte in each of the 2 pages -- KSM must automatically unmerge them */
memset(map_ptr, '-', 1);
memset(map_ptr + page_size, '+', 1);
/* get at least 1 scan, so KSM can detect that the pages were modified */
- if (ksm_do_scan(1, start_time, timeout))
- goto err_out;
+ ksm_do_scan(1, start_time, timeout);
/* check that unmerging was successful and 0 pages are currently merged */
- if (assert_ksm_pages_count(0)) {
- printf("OK\n");
- munmap(map_ptr, page_size * page_count);
- return KSFT_PASS;
- }
-
-err_out:
- printf("Not OK\n");
+ ksft_test_result(assert_ksm_pages_count(0), "%s\n", __func__);
munmap(map_ptr, page_size * page_count);
- return KSFT_FAIL;
}
-static int check_ksm_zero_page_merge(int merge_type, int mapping, int prot, long page_count,
- int timeout, bool use_zero_pages, size_t page_size)
+static void check_ksm_zero_page_merge(int merge_type, int mapping, int prot, long page_count,
+ int timeout, bool use_zero_pages, size_t page_size)
{
void *map_ptr;
struct timespec start_time;
+ bool passed = true;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time)) {
- perror("clock_gettime");
- return KSFT_FAIL;
- }
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
- if (ksm_write_sysfs(KSM_FP("use_zero_pages"), use_zero_pages))
- return KSFT_FAIL;
+ ksm_write_sysfs(KSM_FP("use_zero_pages"), use_zero_pages);
/* fill pages with zero and try to merge them */
map_ptr = allocate_memory(NULL, prot, mapping, 0, page_size * page_count);
- if (!map_ptr)
- return KSFT_FAIL;
- if (ksm_merge_pages(merge_type, map_ptr, page_size * page_count, start_time, timeout))
- goto err_out;
+ ksm_merge_pages(merge_type, map_ptr, page_size * page_count, start_time, timeout);
/*
* verify that the right number of pages are merged:
@@ -448,18 +378,12 @@ static int check_ksm_zero_page_merge(int merge_type, int mapping, int prot, long
* and merged as usual.
*/
if (use_zero_pages && !assert_ksm_pages_count(0))
- goto err_out;
+ passed = false;
else if (!use_zero_pages && !assert_ksm_pages_count(page_count))
- goto err_out;
-
- printf("OK\n");
- munmap(map_ptr, page_size * page_count);
- return KSFT_PASS;
+ passed = false;
-err_out:
- printf("Not OK\n");
+ ksft_test_result(passed, "%s\n", __func__);
munmap(map_ptr, page_size * page_count);
- return KSFT_FAIL;
}
static int get_next_mem_node(int node)
@@ -483,46 +407,44 @@ static int get_first_mem_node(void)
return get_next_mem_node(numa_max_node());
}
-static int check_ksm_numa_merge(int merge_type, int mapping, int prot, int timeout,
- bool merge_across_nodes, size_t page_size)
+static void check_ksm_numa_merge(int merge_type, int mapping, int prot, int timeout,
+ bool merge_across_nodes, size_t page_size)
{
void *numa1_map_ptr, *numa2_map_ptr;
struct timespec start_time;
int page_count = 2;
+ bool passed = true;
int first_node;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time)) {
- perror("clock_gettime");
- return KSFT_FAIL;
- }
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
if (numa_available() < 0) {
- perror("NUMA support not enabled");
- return KSFT_SKIP;
+ ksft_test_result_skip("NUMA support not enabled: %s\n", strerror(errno));
+ return;
}
+
if (numa_num_configured_nodes() <= 1) {
- printf("At least 2 NUMA nodes must be available\n");
- return KSFT_SKIP;
+ ksft_test_result_skip("At least 2 NUMA nodes must be available\n");
+ return;
}
- if (ksm_write_sysfs(KSM_FP("merge_across_nodes"), merge_across_nodes))
- return KSFT_FAIL;
+ ksm_write_sysfs(KSM_FP("merge_across_nodes"), merge_across_nodes);
/* allocate 2 pages in 2 different NUMA nodes and fill them with the same data */
first_node = get_first_mem_node();
numa1_map_ptr = numa_alloc_onnode(page_size, first_node);
numa2_map_ptr = numa_alloc_onnode(page_size, get_next_mem_node(first_node));
if (!numa1_map_ptr || !numa2_map_ptr) {
- perror("numa_alloc_onnode");
- return KSFT_FAIL;
+ ksft_test_result_fail("numa_alloc_onnode: %s\n", strerror(errno));
+ return;
}
memset(numa1_map_ptr, '*', page_size);
memset(numa2_map_ptr, '*', page_size);
/* try to merge the pages */
- if (ksm_merge_pages(merge_type, numa1_map_ptr, page_size, start_time, timeout) ||
- ksm_merge_pages(merge_type, numa2_map_ptr, page_size, start_time, timeout))
- goto err_out;
+ ksm_merge_pages(merge_type, numa1_map_ptr, page_size, start_time, timeout);
+ ksm_merge_pages(merge_type, numa2_map_ptr, page_size, start_time, timeout);
/*
* verify that the right number of pages are merged:
@@ -531,24 +453,18 @@ static int check_ksm_numa_merge(int merge_type, int mapping, int prot, int timeo
* only 1 unique page in each node and they can't be shared.
*/
if (merge_across_nodes && !assert_ksm_pages_count(page_count))
- goto err_out;
+ passed = false;
else if (!merge_across_nodes && !assert_ksm_pages_count(0))
- goto err_out;
+ passed = false;
numa_free(numa1_map_ptr, page_size);
numa_free(numa2_map_ptr, page_size);
- printf("OK\n");
- return KSFT_PASS;
-err_out:
- numa_free(numa1_map_ptr, page_size);
- numa_free(numa2_map_ptr, page_size);
- printf("Not OK\n");
- return KSFT_FAIL;
+ ksft_test_result(passed, "%s\n", __func__);
}
-static int ksm_merge_hugepages_time(int merge_type, int mapping, int prot,
- int timeout, size_t map_size)
+static void ksm_merge_hugepages_time(int merge_type, int mapping, int prot,
+ int timeout, size_t map_size)
{
void *map_ptr, *map_ptr_orig;
struct timespec start_time, end_time;
@@ -564,14 +480,14 @@ static int ksm_merge_hugepages_time(int merge_type, int mapping, int prot,
map_ptr = map_ptr_orig + HPAGE_SIZE - (uintptr_t)map_ptr_orig % HPAGE_SIZE;
if (map_ptr_orig == MAP_FAILED)
- err(2, "initial mmap");
+ ksft_exit_fail_msg("initial mmap: %s\n", strerror(errno));
if (madvise(map_ptr, len, MADV_HUGEPAGE))
- err(2, "MADV_HUGEPAGE");
+ ksft_exit_fail_msg("MADV_HUGEPAGE: %s\n", strerror(errno));
pagemap_fd = open("/proc/self/pagemap", O_RDONLY);
if (pagemap_fd < 0)
- err(2, "open pagemap");
+ ksft_exit_fail_msg("open pagemap: %s\n", strerror(errno));
n_normal_pages = 0;
n_huge_pages = 0;
@@ -581,41 +497,33 @@ static int ksm_merge_hugepages_time(int merge_type, int mapping, int prot,
else
n_huge_pages++;
}
- printf("Number of normal pages: %d\n", n_normal_pages);
- printf("Number of huge pages: %d\n", n_huge_pages);
+ ksft_print_msg("Number of normal pages: %d\n", n_normal_pages);
+ ksft_print_msg("Number of huge pages: %d\n", n_huge_pages);
memset(map_ptr, '*', len);
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time)) {
- perror("clock_gettime");
- goto err_out;
- }
- if (ksm_merge_pages(merge_type, map_ptr, map_size, start_time, timeout))
- goto err_out;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &end_time)) {
- perror("clock_gettime");
- goto err_out;
- }
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
+
+ ksm_merge_pages(merge_type, map_ptr, map_size, start_time, timeout);
+
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &end_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
scan_time_ns = (end_time.tv_sec - start_time.tv_sec) * NSEC_PER_SEC +
(end_time.tv_nsec - start_time.tv_nsec);
- printf("Total size: %lu MiB\n", map_size / MB);
- printf("Total time: %ld.%09ld s\n", scan_time_ns / NSEC_PER_SEC,
- scan_time_ns % NSEC_PER_SEC);
- printf("Average speed: %.3f MiB/s\n", (map_size / MB) /
- ((double)scan_time_ns / NSEC_PER_SEC));
-
- munmap(map_ptr_orig, len + HPAGE_SIZE);
- return KSFT_PASS;
+ ksft_print_msg("Total size: %lu MiB\n", map_size / MB);
+ ksft_print_msg("Total time: %ld.%09ld s\n", scan_time_ns / NSEC_PER_SEC,
+ scan_time_ns % NSEC_PER_SEC);
+ ksft_print_msg("Average speed: %.3f MiB/s\n", (map_size / MB) /
+ ((double)scan_time_ns / NSEC_PER_SEC));
-err_out:
- printf("Not OK\n");
+ ksft_test_result_pass("%s\n", __func__);
munmap(map_ptr_orig, len + HPAGE_SIZE);
- return KSFT_FAIL;
}
-static int ksm_merge_time(int merge_type, int mapping, int prot, int timeout, size_t map_size)
+static void ksm_merge_time(int merge_type, int mapping, int prot, int timeout, size_t map_size)
{
void *map_ptr;
struct timespec start_time, end_time;
@@ -624,39 +532,29 @@ static int ksm_merge_time(int merge_type, int mapping, int prot, int timeout, si
map_size *= MB;
map_ptr = allocate_memory(NULL, prot, mapping, '*', map_size);
- if (!map_ptr)
- return KSFT_FAIL;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time)) {
- perror("clock_gettime");
- goto err_out;
- }
- if (ksm_merge_pages(merge_type, map_ptr, map_size, start_time, timeout))
- goto err_out;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &end_time)) {
- perror("clock_gettime");
- goto err_out;
- }
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
+
+ ksm_merge_pages(merge_type, map_ptr, map_size, start_time, timeout);
+
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &end_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
scan_time_ns = (end_time.tv_sec - start_time.tv_sec) * NSEC_PER_SEC +
(end_time.tv_nsec - start_time.tv_nsec);
- printf("Total size: %lu MiB\n", map_size / MB);
- printf("Total time: %ld.%09ld s\n", scan_time_ns / NSEC_PER_SEC,
- scan_time_ns % NSEC_PER_SEC);
- printf("Average speed: %.3f MiB/s\n", (map_size / MB) /
- ((double)scan_time_ns / NSEC_PER_SEC));
+ ksft_print_msg("Total size: %lu MiB\n", map_size / MB);
+ ksft_print_msg("Total time: %ld.%09ld s\n", scan_time_ns / NSEC_PER_SEC,
+ scan_time_ns % NSEC_PER_SEC);
+ ksft_print_msg("Average speed: %.3f MiB/s\n", (map_size / MB) /
+ ((double)scan_time_ns / NSEC_PER_SEC));
+ ksft_test_result_pass("%s\n", __func__);
munmap(map_ptr, map_size);
- return KSFT_PASS;
-
-err_out:
- printf("Not OK\n");
- munmap(map_ptr, map_size);
- return KSFT_FAIL;
}
-static int ksm_unmerge_time(int merge_type, int mapping, int prot, int timeout, size_t map_size)
+static void ksm_unmerge_time(int merge_type, int mapping, int prot, int timeout, size_t map_size)
{
void *map_ptr;
struct timespec start_time, end_time;
@@ -665,45 +563,34 @@ static int ksm_unmerge_time(int merge_type, int mapping, int prot, int timeout,
map_size *= MB;
map_ptr = allocate_memory(NULL, prot, mapping, '*', map_size);
- if (!map_ptr)
- return KSFT_FAIL;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time)) {
- perror("clock_gettime");
- goto err_out;
- }
- if (ksm_merge_pages(merge_type, map_ptr, map_size, start_time, timeout))
- goto err_out;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time)) {
- perror("clock_gettime");
- goto err_out;
- }
- if (ksm_unmerge_pages(map_ptr, map_size, start_time, timeout))
- goto err_out;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &end_time)) {
- perror("clock_gettime");
- goto err_out;
- }
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
+
+ ksm_merge_pages(merge_type, map_ptr, map_size, start_time, timeout);
+
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
+
+ ksm_unmerge_pages(map_ptr, map_size, start_time, timeout);
+
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &end_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
scan_time_ns = (end_time.tv_sec - start_time.tv_sec) * NSEC_PER_SEC +
(end_time.tv_nsec - start_time.tv_nsec);
- printf("Total size: %lu MiB\n", map_size / MB);
- printf("Total time: %ld.%09ld s\n", scan_time_ns / NSEC_PER_SEC,
- scan_time_ns % NSEC_PER_SEC);
- printf("Average speed: %.3f MiB/s\n", (map_size / MB) /
- ((double)scan_time_ns / NSEC_PER_SEC));
+ ksft_print_msg("Total size: %lu MiB\n", map_size / MB);
+ ksft_print_msg("Total time: %ld.%09ld s\n", scan_time_ns / NSEC_PER_SEC,
+ scan_time_ns % NSEC_PER_SEC);
+ ksft_print_msg("Average speed: %.3f MiB/s\n", (map_size / MB) /
+ ((double)scan_time_ns / NSEC_PER_SEC));
+ ksft_test_result_pass("%s\n", __func__);
munmap(map_ptr, map_size);
- return KSFT_PASS;
-
-err_out:
- printf("Not OK\n");
- munmap(map_ptr, map_size);
- return KSFT_FAIL;
}
-static int ksm_cow_time(int merge_type, int mapping, int prot, int timeout, size_t page_size)
+static void ksm_cow_time(int merge_type, int mapping, int prot, int timeout, size_t page_size)
{
void *map_ptr;
struct timespec start_time, end_time;
@@ -713,70 +600,57 @@ static int ksm_cow_time(int merge_type, int mapping, int prot, int timeout, size
size_t page_count = 4000;
map_ptr = allocate_memory(NULL, prot, mapping, '*', page_size * page_count);
- if (!map_ptr)
- return KSFT_FAIL;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time)) {
- perror("clock_gettime");
- return KSFT_FAIL;
- }
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
+
for (size_t i = 0; i < page_count - 1; i = i + 2)
memset(map_ptr + page_size * i, '-', 1);
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &end_time)) {
- perror("clock_gettime");
- return KSFT_FAIL;
- }
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &end_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
cow_time_ns = (end_time.tv_sec - start_time.tv_sec) * NSEC_PER_SEC +
(end_time.tv_nsec - start_time.tv_nsec);
- printf("Total size: %lu MiB\n\n", (page_size * page_count) / MB);
- printf("Not merged pages:\n");
- printf("Total time: %ld.%09ld s\n", cow_time_ns / NSEC_PER_SEC,
- cow_time_ns % NSEC_PER_SEC);
- printf("Average speed: %.3f MiB/s\n\n", ((page_size * (page_count / 2)) / MB) /
- ((double)cow_time_ns / NSEC_PER_SEC));
+ ksft_print_msg("Total size: %lu MiB\n\n", (page_size * page_count) / MB);
+ ksft_print_msg("Not merged pages:\n");
+ ksft_print_msg("Total time: %ld.%09ld s\n", cow_time_ns / NSEC_PER_SEC,
+ cow_time_ns % NSEC_PER_SEC);
+ ksft_print_msg("Average speed: %.3f MiB/s\n\n", ((page_size * (page_count / 2)) / MB) /
+ ((double)cow_time_ns / NSEC_PER_SEC));
/* Create 2000 pairs of duplicate pages */
for (size_t i = 0; i < page_count - 1; i = i + 2) {
memset(map_ptr + page_size * i, '+', i / 2 + 1);
memset(map_ptr + page_size * (i + 1), '+', i / 2 + 1);
}
- if (ksm_merge_pages(merge_type, map_ptr, page_size * page_count, start_time, timeout))
- goto err_out;
+ ksm_merge_pages(merge_type, map_ptr, page_size * page_count, start_time, timeout);
+
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &start_time)) {
- perror("clock_gettime");
- goto err_out;
- }
for (size_t i = 0; i < page_count - 1; i = i + 2)
memset(map_ptr + page_size * i, '-', 1);
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &end_time)) {
- perror("clock_gettime");
- goto err_out;
- }
+
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &end_time))
+ ksft_exit_fail_msg("clock_gettime: %s\n", strerror(errno));
cow_time_ns = (end_time.tv_sec - start_time.tv_sec) * NSEC_PER_SEC +
(end_time.tv_nsec - start_time.tv_nsec);
- printf("Merged pages:\n");
- printf("Total time: %ld.%09ld s\n", cow_time_ns / NSEC_PER_SEC,
- cow_time_ns % NSEC_PER_SEC);
- printf("Average speed: %.3f MiB/s\n", ((page_size * (page_count / 2)) / MB) /
- ((double)cow_time_ns / NSEC_PER_SEC));
-
- munmap(map_ptr, page_size * page_count);
- return KSFT_PASS;
+ ksft_print_msg("Merged pages:\n");
+ ksft_print_msg("Total time: %ld.%09ld s\n", cow_time_ns / NSEC_PER_SEC,
+ cow_time_ns % NSEC_PER_SEC);
+ ksft_print_msg("Average speed: %.3f MiB/s\n", ((page_size * (page_count / 2)) / MB) /
+ ((double)cow_time_ns / NSEC_PER_SEC));
-err_out:
- printf("Not OK\n");
+ ksft_test_result_pass("%s\n", __func__);
munmap(map_ptr, page_size * page_count);
- return KSFT_FAIL;
}
int main(int argc, char *argv[])
{
- int ret, opt;
+ int opt;
int prot = 0;
int ksm_scan_limit_sec = KSM_SCAN_LIMIT_SEC_DEFAULT;
int merge_type = KSM_MERGE_TYPE_DEFAULT;
@@ -788,6 +662,9 @@ int main(int argc, char *argv[])
bool merge_across_nodes = KSM_MERGE_ACROSS_NODES_DEFAULT;
long size_MB = 0;
+ ksft_print_header();
+ ksft_set_plan(1);
+
while ((opt = getopt(argc, argv, "dha:p:l:z:m:s:t:MUZNPCHD")) != -1) {
switch (opt) {
case 'a':
@@ -879,70 +756,63 @@ int main(int argc, char *argv[])
return KSFT_SKIP;
}
- if (ksm_save_def(&ksm_sysfs_old)) {
- printf("Cannot save default tunables\n");
- return KSFT_FAIL;
- }
+ ksm_save_def(&ksm_sysfs_old);
- if (ksm_write_sysfs(KSM_FP("run"), 2) ||
- ksm_write_sysfs(KSM_FP("sleep_millisecs"), 0) ||
- numa_available() ? 0 :
- ksm_write_sysfs(KSM_FP("merge_across_nodes"), 1) ||
- ksm_write_sysfs(KSM_FP("pages_to_scan"), page_count))
- return KSFT_FAIL;
+ ksm_write_sysfs(KSM_FP("run"), 2);
+ ksm_write_sysfs(KSM_FP("sleep_millisecs"), 0);
+ if (numa_available())
+ ksm_write_sysfs(KSM_FP("merge_across_nodes"), 1);
+ ksm_write_sysfs(KSM_FP("pages_to_scan"), page_count);
switch (test_name) {
case CHECK_KSM_MERGE:
- ret = check_ksm_merge(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot, page_count,
- ksm_scan_limit_sec, page_size);
+ check_ksm_merge(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot, page_count,
+ ksm_scan_limit_sec, page_size);
break;
case CHECK_KSM_UNMERGE:
- ret = check_ksm_unmerge(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
- ksm_scan_limit_sec, page_size);
+ check_ksm_unmerge(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
+ ksm_scan_limit_sec, page_size);
break;
case CHECK_KSM_ZERO_PAGE_MERGE:
- ret = check_ksm_zero_page_merge(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
- page_count, ksm_scan_limit_sec, use_zero_pages,
- page_size);
+ check_ksm_zero_page_merge(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
+ page_count, ksm_scan_limit_sec, use_zero_pages,
+ page_size);
break;
case CHECK_KSM_NUMA_MERGE:
- ret = check_ksm_numa_merge(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
- ksm_scan_limit_sec, merge_across_nodes, page_size);
+ check_ksm_numa_merge(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
+ ksm_scan_limit_sec, merge_across_nodes, page_size);
break;
case KSM_MERGE_TIME:
if (size_MB == 0) {
- printf("Option '-s' is required.\n");
- return KSFT_FAIL;
+ ksft_test_result_skip("Option '-s' is required.\n");
+ break;
}
- ret = ksm_merge_time(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
- ksm_scan_limit_sec, size_MB);
+ ksm_merge_time(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
+ ksm_scan_limit_sec, size_MB);
break;
case KSM_MERGE_TIME_HUGE_PAGES:
if (size_MB == 0) {
- printf("Option '-s' is required.\n");
- return KSFT_FAIL;
+ ksft_test_result_skip("Option '-s' is required.\n");
+ break;
}
- ret = ksm_merge_hugepages_time(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
- ksm_scan_limit_sec, size_MB);
+ ksm_merge_hugepages_time(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
+ ksm_scan_limit_sec, size_MB);
break;
case KSM_UNMERGE_TIME:
if (size_MB == 0) {
- printf("Option '-s' is required.\n");
- return KSFT_FAIL;
+ ksft_test_result_skip("Option '-s' is required.\n");
+ break;
}
- ret = ksm_unmerge_time(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
- ksm_scan_limit_sec, size_MB);
+ ksm_unmerge_time(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
+ ksm_scan_limit_sec, size_MB);
break;
case KSM_COW_TIME:
- ret = ksm_cow_time(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
- ksm_scan_limit_sec, page_size);
+ ksm_cow_time(merge_type, MAP_PRIVATE | MAP_ANONYMOUS, prot,
+ ksm_scan_limit_sec, page_size);
break;
}
- if (ksm_restore(&ksm_sysfs_old)) {
- printf("Cannot restore default tunables\n");
- return KSFT_FAIL;
- }
+ ksm_restore(&ksm_sysfs_old);
- return ret;
+ ksft_finished();
}
--
2.42.0
^ permalink raw reply [flat|nested] 7+ messages in thread* [PATCH v4 7/7] selftests/mm: config: add missing configs
2024-01-26 11:21 [PATCH v4 1/7] selftests/mm: hugepage-shm: conform test to TAP format output Muhammad Usama Anjum
` (4 preceding siblings ...)
2024-01-26 11:21 ` [PATCH v4 6/7] selftests/mm: ksm_tests: " Muhammad Usama Anjum
@ 2024-01-26 11:21 ` Muhammad Usama Anjum
5 siblings, 0 replies; 7+ messages in thread
From: Muhammad Usama Anjum @ 2024-01-26 11:21 UTC (permalink / raw)
To: Andrew Morton, Shuah Khan
Cc: Muhammad Usama Anjum, kernel, linux-mm, linux-kselftest, linux-kernel
Add configurations which are needed for
- hugetlb-read-hwpoison
- ksm_functional_test and ksm_test
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
---
Changes since v3:
- Rebased on top of next-20240125
---
tools/testing/selftests/mm/config | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/testing/selftests/mm/config b/tools/testing/selftests/mm/config
index 4309916f629e3..d16a72036eb7f 100644
--- a/tools/testing/selftests/mm/config
+++ b/tools/testing/selftests/mm/config
@@ -7,3 +7,6 @@ CONFIG_TEST_HMM=m
CONFIG_GUP_TEST=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_MEM_SOFT_DIRTY=y
+CONFIG_MEMORY_FAILURE=y
+CONFIG_HWPOISON_INJECT=y
+CONFIG_KSM=y
--
2.42.0
^ permalink raw reply [flat|nested] 7+ messages in thread