1 files changed, 0 insertions, 206 deletions
diff --git a/tools/testing/selftests/vm/mrelease_test.c b/tools/testing/selftests/vm/mrelease_test.c
deleted file mode 100644
index 6c62966ab5db..000000000000
--- a/tools/testing/selftests/vm/mrelease_test.c
+++ /dev/null
@@ -1,206 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright 2022 Google LLC
- */
-#define _GNU_SOURCE
-#include <errno.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include "util.h"
-
-#include "../kselftest.h"
-
-#ifndef __NR_pidfd_open
-#define __NR_pidfd_open -1
-#endif
-
-#ifndef __NR_process_mrelease
-#define __NR_process_mrelease -1
-#endif
-
-#define MB(x) (x << 20)
-#define MAX_SIZE_MB 1024
-
-static int alloc_noexit(unsigned long nr_pages, int pipefd)
-{
-	int ppid = getppid();
-	int timeout = 10; /* 10sec timeout to get killed */
-	unsigned long i;
-	char *buf;
-
-	buf = (char *)mmap(NULL, nr_pages * PAGE_SIZE, PROT_READ | PROT_WRITE,
-			   MAP_PRIVATE | MAP_ANON, 0, 0);
-	if (buf == MAP_FAILED) {
-		perror("mmap failed, halting the test");
-		return KSFT_FAIL;
-	}
-
-	for (i = 0; i < nr_pages; i++)
-		*((unsigned long *)(buf + (i * PAGE_SIZE))) = i;
-
-	/* Signal the parent that the child is ready */
-	if (write(pipefd, "", 1) < 0) {
-		perror("write");
-		return KSFT_FAIL;
-	}
-
-	/* Wait to be killed (when reparenting happens) */
-	while (getppid() == ppid && timeout > 0) {
-		sleep(1);
-		timeout--;
-	}
-
-	munmap(buf, nr_pages * PAGE_SIZE);
-
-	return (timeout > 0) ? KSFT_PASS : KSFT_FAIL;
-}
-
-/* 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);
-	}
-	/*
-	 * 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);
-	}
-}
-
-static int child_main(int pipefd[], size_t size)
-{
-	int res;
-
-	/* Allocate and fault-in memory and wait to be killed */
-	close(pipefd[0]);
-	res = alloc_noexit(MB(size) / PAGE_SIZE, pipefd[1]);
-	close(pipefd[1]);
-	return res;
-}
-
-int main(void)
-{
-	int pipefd[2], pidfd;
-	bool success, retry;
-	size_t size;
-	pid_t pid;
-	char byte;
-	int res;
-
-	/* 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);
-	}
-
-	/* Start the test with 1MB child memory allocation */
-	size = 1;
-retry:
-	/*
-	 * Pipe for the child to signal when it's done allocating
-	 * memory
-	 */
-	if (pipe(pipefd)) {
-		perror("pipe");
-		exit(KSFT_FAIL);
-	}
-	pid = fork();
-	if (pid < 0) {
-		perror("fork");
-		close(pipefd[0]);
-		close(pipefd[1]);
-		exit(KSFT_FAIL);
-	}
-
-	if (pid == 0) {
-		/* Child main routine */
-		res = child_main(pipefd, size);
-		exit(res);
-	}
-
-	/*
-	 * Parent main routine:
-	 * Wait for the child to finish allocations, then kill and reap
-	 */
-	close(pipefd[1]);
-	/* Block until the child is ready */
-	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);
-	}
-
-	pidfd = syscall(__NR_pidfd_open, pid, 0);
-	if (pidfd < 0) {
-		perror("pidfd_open");
-		if (!kill(pid, SIGKILL))
-			waitpid(pid, NULL, 0);
-		exit(KSFT_FAIL);
-	}
-
-	/* 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);
-	}
-
-	success = (syscall(__NR_process_mrelease, pidfd, 0) == 0);
-	if (!success) {
-		/*
-		 * If we failed to reap because the child exited too soon,
-		 * before we could call process_mrelease. Double child's memory
-		 * which causes it to spend more time on cleanup and increases
-		 * our chances of reaping its memory before it exits.
-		 * Retry until we succeed or reach MAX_SIZE_MB.
-		 */
-		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);
-		}
-	}
-
-	/* Cleanup to prevent zombies */
-	if (waitpid(pid, NULL, 0) < 0) {
-		perror("waitpid");
-		exit(KSFT_FAIL);
-	}
-	close(pidfd);
-
-	if (!success) {
-		if (retry) {
-			size *= 2;
-			goto retry;
-		}
-		printf("All process_mrelease attempts failed!\n");
-		exit(KSFT_FAIL);
-	}
-
-	printf("Success reaping a child with %zuMB of memory allocations\n",
-	       size);
-	return KSFT_PASS;
-}