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selftests/mm: map_populate: 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. 
Minor cleanups have also been included.

Link: https://lkml.kernel.org/r/20240202113119.2047740-4-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 2024-02-02 16:31:10 +05:00 committed by Andrew Morton
parent d1e7bf2c70
commit 7ef98513c7
1 changed files with 23 additions and 14 deletions
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37
tools/testing/selftests/mm/map_populate.c
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@ -16,19 +16,21 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "../kselftest.h"
#define MMAP_SZ 4096
#define BUG_ON(condition, description) \
do { \
if (condition) { \
fprintf(stderr, "[FAIL]\t%s:%d\t%s:%s\n", __func__, \
__LINE__, (description), strerror(errno)); \
exit(1); \
} \
#define BUG_ON(condition, description) \
do { \
if (condition) \
ksft_exit_fail_msg("[FAIL]\t%s:%d\t%s:%s\n", \
__func__, __LINE__, (description), \
strerror(errno)); \
} while (0)
static int parent_f(int sock, unsigned long *smap, int child)
#define TESTS_IN_CHILD 2
static void parent_f(int sock, unsigned long *smap, int child)
{
int status, ret;
@ -43,9 +45,10 @@ static int parent_f(int sock, unsigned long *smap, int child)
BUG_ON(ret <= 0, "write(sock)");
waitpid(child, &status, 0);
BUG_ON(!WIFEXITED(status), "child in unexpected state");
return WEXITSTATUS(status);
/* The ksft macros don't keep counters between processes */
ksft_cnt.ksft_pass = WEXITSTATUS(status);
ksft_cnt.ksft_fail = TESTS_IN_CHILD - WEXITSTATUS(status);
}
static int child_f(int sock, unsigned long *smap, int fd)
@ -64,10 +67,11 @@ static int child_f(int sock, unsigned long *smap, int fd)
ret = read(sock, &buf, sizeof(int));
BUG_ON(ret <= 0, "read(sock)");
BUG_ON(*smap == 0x22222BAD, "MAP_POPULATE didn't COW private page");
BUG_ON(*smap != 0xdeadbabe, "mapping was corrupted");
ksft_test_result(*smap != 0x22222BAD, "MAP_POPULATE COW private page\n");
ksft_test_result(*smap == 0xdeadbabe, "The mapping state\n");
return 0;
/* The ksft macros don't keep counters between processes */
return ksft_cnt.ksft_pass;
}
int main(int argc, char **argv)
@ -76,6 +80,9 @@ int main(int argc, char **argv)
FILE *ftmp;
unsigned long *smap;
ksft_print_header();
ksft_set_plan(TESTS_IN_CHILD);
ftmp = tmpfile();
BUG_ON(!ftmp, "tmpfile()");
@ -101,7 +108,9 @@ int main(int argc, char **argv)
ret = close(sock[0]);
BUG_ON(ret, "close()");
return parent_f(sock[1], smap, child);
parent_f(sock[1], smap, child);
ksft_finished();
}
ret = close(sock[1]);