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Message-ID: <20240131140528.320252-6-usama.anjum@collabora.com>
Date: Wed, 31 Jan 2024 19:05:16 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
Shuah Khan <shuah@...nel.org>,
Christian Brauner <brauner@...nel.org>
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>,
kernel@...labora.com,
linux-mm@...ck.org,
linux-kselftest@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 06/12] selftests/mm: mrelease_test: conform test to TAP format output
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@...labora.com>
---
tools/testing/selftests/mm/mrelease_test.c | 80 +++++++++-------------
1 file changed, 33 insertions(+), 47 deletions(-)
diff --git a/tools/testing/selftests/mm/mrelease_test.c b/tools/testing/selftests/mm/mrelease_test.c
index d822004a374e9..100370a7111df 100644
--- a/tools/testing/selftests/mm/mrelease_test.c
+++ b/tools/testing/selftests/mm/mrelease_test.c
@@ -26,19 +26,15 @@ static int alloc_noexit(unsigned long nr_pages, int pipefd)
buf = (char *)mmap(NULL, nr_pages * psize(), PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANON, 0, 0);
- if (buf == MAP_FAILED) {
- perror("mmap failed, halting the test");
- return KSFT_FAIL;
- }
+ if (buf == MAP_FAILED)
+ ksft_exit_fail_msg("mmap failed, halting the test: %s\n", strerror(errno));
for (i = 0; i < nr_pages; i++)
*((unsigned long *)(buf + (i * psize()))) = i;
/* Signal the parent that the child is ready */
- if (write(pipefd, "", 1) < 0) {
- perror("write");
- return KSFT_FAIL;
- }
+ if (write(pipefd, "", 1) < 0)
+ ksft_exit_fail_msg("write: %s\n", strerror(errno));
/* Wait to be killed (when reparenting happens) */
while (getppid() == ppid && timeout > 0) {
@@ -54,23 +50,17 @@ static int alloc_noexit(unsigned long nr_pages, int pipefd)
/* The process_mrelease calls in this test are expected to fail */
static void run_negative_tests(int pidfd)
{
- int res;
/* Test invalid flags. Expect to fail with EINVAL error code. */
if (!syscall(__NR_process_mrelease, pidfd, (unsigned int)-1) ||
errno != EINVAL) {
- res = (errno == ENOSYS ? KSFT_SKIP : KSFT_FAIL);
- perror("process_mrelease with wrong flags");
- exit(res);
+ ksft_exit_fail_msg("process_mrelease with wrong flags: %s\n", strerror(errno));
}
/*
* Test reaping while process is alive with no pending SIGKILL.
* Expect to fail with EINVAL error code.
*/
- if (!syscall(__NR_process_mrelease, pidfd, 0) || errno != EINVAL) {
- res = (errno == ENOSYS ? KSFT_SKIP : KSFT_FAIL);
- perror("process_mrelease on a live process");
- exit(res);
- }
+ if (!syscall(__NR_process_mrelease, pidfd, 0) || errno != EINVAL)
+ ksft_exit_fail_msg("process_mrelease on a live process: %s\n", strerror(errno));
}
static int child_main(int pipefd[], size_t size)
@@ -93,11 +83,18 @@ int main(void)
char byte;
int res;
+ ksft_print_header();
+ ksft_set_plan(1);
+
/* Test a wrong pidfd */
if (!syscall(__NR_process_mrelease, -1, 0) || errno != EBADF) {
- res = (errno == ENOSYS ? KSFT_SKIP : KSFT_FAIL);
- perror("process_mrelease with wrong pidfd");
- exit(res);
+ if (errno == ENOSYS) {
+ ksft_test_result_skip("process_mrelease not implemented\n");
+ ksft_finished();
+ } else {
+ ksft_exit_fail_msg("process_mrelease with wrong pidfd: %s",
+ strerror(errno));
+ }
}
/* Start the test with 1MB child memory allocation */
@@ -107,16 +104,14 @@ int main(void)
* Pipe for the child to signal when it's done allocating
* memory
*/
- if (pipe(pipefd)) {
- perror("pipe");
- exit(KSFT_FAIL);
- }
+ if (pipe(pipefd))
+ ksft_exit_fail_msg("pipe: %s\n", strerror(errno));
+
pid = fork();
if (pid < 0) {
- perror("fork");
close(pipefd[0]);
close(pipefd[1]);
- exit(KSFT_FAIL);
+ ksft_exit_fail_msg("fork: %s\n", strerror(errno));
}
if (pid == 0) {
@@ -134,28 +129,23 @@ int main(void)
res = read(pipefd[0], &byte, 1);
close(pipefd[0]);
if (res < 0) {
- perror("read");
if (!kill(pid, SIGKILL))
waitpid(pid, NULL, 0);
- exit(KSFT_FAIL);
+ ksft_exit_fail_msg("read: %s\n", strerror(errno));
}
pidfd = syscall(__NR_pidfd_open, pid, 0);
if (pidfd < 0) {
- perror("pidfd_open");
if (!kill(pid, SIGKILL))
waitpid(pid, NULL, 0);
- exit(KSFT_FAIL);
+ ksft_exit_fail_msg("pidfd_open: %s\n", strerror(errno));
}
/* Run negative tests which require a live child */
run_negative_tests(pidfd);
- if (kill(pid, SIGKILL)) {
- res = (errno == ENOSYS ? KSFT_SKIP : KSFT_FAIL);
- perror("kill");
- exit(res);
- }
+ if (kill(pid, SIGKILL))
+ ksft_exit_fail_msg("kill: %s\n", strerror(errno));
success = (syscall(__NR_process_mrelease, pidfd, 0) == 0);
if (!success) {
@@ -169,18 +159,15 @@ int main(void)
if (errno == ESRCH) {
retry = (size <= MAX_SIZE_MB);
} else {
- res = (errno == ENOSYS ? KSFT_SKIP : KSFT_FAIL);
- perror("process_mrelease");
waitpid(pid, NULL, 0);
- exit(res);
+ ksft_exit_fail_msg("process_mrelease: %s\n", strerror(errno));
}
}
/* Cleanup to prevent zombies */
- if (waitpid(pid, NULL, 0) < 0) {
- perror("waitpid");
- exit(KSFT_FAIL);
- }
+ if (waitpid(pid, NULL, 0) < 0)
+ ksft_exit_fail_msg("waitpid: %s\n", strerror(errno));
+
close(pidfd);
if (!success) {
@@ -188,11 +175,10 @@ int main(void)
size *= 2;
goto retry;
}
- printf("All process_mrelease attempts failed!\n");
- exit(KSFT_FAIL);
+ ksft_exit_fail_msg("All process_mrelease attempts failed!\n");
}
- printf("Success reaping a child with %zuMB of memory allocations\n",
- size);
- return KSFT_PASS;
+ ksft_test_result_pass("Success reaping a child with %zuMB of memory allocations\n",
+ size);
+ ksft_finished();
}
--
2.42.0
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