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selftests/mm: conform test to TAP format output

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Conform the layout, informational and status messages to TAP.  No
functional change is intended other than the layout of output messages.

Link: https://lkml.kernel.org/r/20240101083614.1076768-1-usama.anjum@collabora.com
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Muhammad Usama Anjum 2024-01-01 13:36:12 +05:00 committed by Andrew Morton
parent 84ba3f226c
commit 9a21701edc
1 changed files with 44 additions and 47 deletions
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91
tools/testing/selftests/mm/compaction_test.c
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@ -33,7 +33,7 @@ int read_memory_info(unsigned long *memfree, unsigned long *hugepagesize)
FILE *cmdfile = popen(cmd, "r");
if (!(fgets(buffer, sizeof(buffer), cmdfile))) {
perror("Failed to read meminfo\n");
ksft_print_msg("Failed to read meminfo: %s\n", strerror(errno));
return -1;
}
@ -44,7 +44,7 @@ int read_memory_info(unsigned long *memfree, unsigned long *hugepagesize)
cmdfile = popen(cmd, "r");
if (!(fgets(buffer, sizeof(buffer), cmdfile))) {
perror("Failed to read meminfo\n");
ksft_print_msg("Failed to read meminfo: %s\n", strerror(errno));
return -1;
}
@ -62,14 +62,14 @@ int prereq(void)
fd = open("/proc/sys/vm/compact_unevictable_allowed",
O_RDONLY | O_NONBLOCK);
if (fd < 0) {
perror("Failed to open\n"
"/proc/sys/vm/compact_unevictable_allowed\n");
ksft_print_msg("Failed to open /proc/sys/vm/compact_unevictable_allowed: %s\n",
strerror(errno));
return -1;
}
if (read(fd, &allowed, sizeof(char)) != sizeof(char)) {
perror("Failed to read from\n"
"/proc/sys/vm/compact_unevictable_allowed\n");
ksft_print_msg("Failed to read from /proc/sys/vm/compact_unevictable_allowed: %s\n",
strerror(errno));
close(fd);
return -1;
}
@ -78,12 +78,13 @@ int prereq(void)
if (allowed == '1')
return 0;
ksft_print_msg("Compaction isn't allowed\n");
return -1;
}
int check_compaction(unsigned long mem_free, unsigned int hugepage_size)
{
int fd;
int fd, ret = -1;
int compaction_index = 0;
char initial_nr_hugepages[10] = {0};
char nr_hugepages[10] = {0};
@ -94,18 +95,21 @@ int check_compaction(unsigned long mem_free, unsigned int hugepage_size)
fd = open("/proc/sys/vm/nr_hugepages", O_RDWR | O_NONBLOCK);
if (fd < 0) {
perror("Failed to open /proc/sys/vm/nr_hugepages");
ksft_test_result_fail("Failed to open /proc/sys/vm/nr_hugepages: %s\n",
strerror(errno));
return -1;
}
if (read(fd, initial_nr_hugepages, sizeof(initial_nr_hugepages)) <= 0) {
perror("Failed to read from /proc/sys/vm/nr_hugepages");
ksft_test_result_fail("Failed to read from /proc/sys/vm/nr_hugepages: %s\n",
strerror(errno));
goto close_fd;
}
/* Start with the initial condition of 0 huge pages*/
if (write(fd, "0", sizeof(char)) != sizeof(char)) {
perror("Failed to write 0 to /proc/sys/vm/nr_hugepages\n");
ksft_test_result_fail("Failed to write 0 to /proc/sys/vm/nr_hugepages: %s\n",
strerror(errno));
goto close_fd;
}
@ -114,14 +118,16 @@ int check_compaction(unsigned long mem_free, unsigned int hugepage_size)
/* Request a large number of huge pages. The Kernel will allocate
as much as it can */
if (write(fd, "100000", (6*sizeof(char))) != (6*sizeof(char))) {
perror("Failed to write 100000 to /proc/sys/vm/nr_hugepages\n");
ksft_test_result_fail("Failed to write 100000 to /proc/sys/vm/nr_hugepages: %s\n",
strerror(errno));
goto close_fd;
}
lseek(fd, 0, SEEK_SET);
if (read(fd, nr_hugepages, sizeof(nr_hugepages)) <= 0) {
perror("Failed to re-read from /proc/sys/vm/nr_hugepages\n");
ksft_test_result_fail("Failed to re-read from /proc/sys/vm/nr_hugepages: %s\n",
strerror(errno));
goto close_fd;
}
@ -129,67 +135,58 @@ int check_compaction(unsigned long mem_free, unsigned int hugepage_size)
huge pages */
compaction_index = mem_free/(atoi(nr_hugepages) * hugepage_size);
if (compaction_index > 3) {
printf("No of huge pages allocated = %d\n",
(atoi(nr_hugepages)));
fprintf(stderr, "ERROR: Less that 1/%d of memory is available\n"
"as huge pages\n", compaction_index);
goto close_fd;
}
printf("No of huge pages allocated = %d\n",
(atoi(nr_hugepages)));
lseek(fd, 0, SEEK_SET);
if (write(fd, initial_nr_hugepages, strlen(initial_nr_hugepages))
!= strlen(initial_nr_hugepages)) {
perror("Failed to write value to /proc/sys/vm/nr_hugepages\n");
ksft_test_result_fail("Failed to write value to /proc/sys/vm/nr_hugepages: %s\n",
strerror(errno));
goto close_fd;
}
close(fd);
return 0;
if (compaction_index > 3) {
ksft_print_msg("ERROR: Less that 1/%d of memory is available\n"
"as huge pages\n", compaction_index);
ksft_test_result_fail("No of huge pages allocated = %d\n", (atoi(nr_hugepages)));
goto close_fd;
}
ksft_test_result_pass("Memory compaction succeeded. No of huge pages allocated = %d\n",
(atoi(nr_hugepages)));
ret = 0;
close_fd:
close(fd);
printf("Not OK. Compaction test failed.");
return -1;
return ret;
}
int main(int argc, char **argv)
{
struct rlimit lim;
struct map_list *list, *entry;
struct map_list *list = NULL, *entry;
size_t page_size, i;
void *map = NULL;
unsigned long mem_free = 0;
unsigned long hugepage_size = 0;
long mem_fragmentable_MB = 0;
if (prereq() != 0) {
printf("Either the sysctl compact_unevictable_allowed is not\n"
"set to 1 or couldn't read the proc file.\n"
"Skipping the test\n");
return KSFT_SKIP;
}
ksft_print_header();
if (prereq() != 0)
return ksft_exit_pass();
ksft_set_plan(1);
lim.rlim_cur = RLIM_INFINITY;
lim.rlim_max = RLIM_INFINITY;
if (setrlimit(RLIMIT_MEMLOCK, &lim)) {
perror("Failed to set rlimit:\n");
return -1;
}
if (setrlimit(RLIMIT_MEMLOCK, &lim))
ksft_exit_fail_msg("Failed to set rlimit: %s\n", strerror(errno));
page_size = getpagesize();
list = NULL;
if (read_memory_info(&mem_free, &hugepage_size) != 0) {
printf("ERROR: Cannot read meminfo\n");
return -1;
}
if (read_memory_info(&mem_free, &hugepage_size) != 0)
ksft_exit_fail_msg("Failed to get meminfo\n");
mem_fragmentable_MB = mem_free * 0.8 / 1024;
@ -225,7 +222,7 @@ int main(int argc, char **argv)
}
if (check_compaction(mem_free, hugepage_size) == 0)
return 0;
return ksft_exit_pass();
return -1;
return ksft_exit_fail();
}