kselftest-clean:
$(Q)$(MAKE) -C tools/testing/selftests clean
+PHONY += kselftest-merge
+kselftest-merge:
+ $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!))
+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
+ -m $(objtree)/.config \
+ $(srctree)/tools/testing/selftests/*/config
+ +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
+
# ---------------------------------------------------------------------------
# Modules
@echo ' Build, install, and boot kernel before'
@echo ' running kselftest on it'
@echo ' kselftest-clean - Remove all generated kselftest files'
+ @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existed'
+ @echo ' .config.'
@echo ''
@echo 'Kernel packaging:'
@$(MAKE) $(build)=$(package-dir) help
--- /dev/null
+/*
+ * Copyright (C) 2016 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#define _GNU_SOURCE
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sched.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/ptrace.h>
+#include <sys/stat.h>
+#include <sys/timerfd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include "../kselftest.h"
+
+void child(int cpu)
+{
+ cpu_set_t set;
+
+ CPU_ZERO(&set);
+ CPU_SET(cpu, &set);
+ if (sched_setaffinity(0, sizeof(set), &set) != 0) {
+ perror("sched_setaffinity() failed");
+ _exit(1);
+ }
+
+ if (ptrace(PTRACE_TRACEME, 0, NULL, NULL) != 0) {
+ perror("ptrace(PTRACE_TRACEME) failed");
+ _exit(1);
+ }
+
+ if (raise(SIGSTOP) != 0) {
+ perror("raise(SIGSTOP) failed");
+ _exit(1);
+ }
+
+ _exit(0);
+}
+
+bool run_test(int cpu)
+{
+ int status;
+ pid_t pid = fork();
+ pid_t wpid;
+
+ if (pid < 0) {
+ perror("fork() failed");
+ return false;
+ }
+ if (pid == 0)
+ child(cpu);
+
+ wpid = waitpid(pid, &status, __WALL);
+ if (wpid != pid) {
+ perror("waitpid() failed");
+ return false;
+ }
+ if (!WIFSTOPPED(status)) {
+ printf("child did not stop\n");
+ return false;
+ }
+ if (WSTOPSIG(status) != SIGSTOP) {
+ printf("child did not stop with SIGSTOP\n");
+ return false;
+ }
+
+ if (ptrace(PTRACE_SINGLESTEP, pid, NULL, NULL) < 0) {
+ if (errno == EIO) {
+ printf("ptrace(PTRACE_SINGLESTEP) not supported on this architecture\n");
+ ksft_exit_skip();
+ }
+ perror("ptrace(PTRACE_SINGLESTEP) failed");
+ return false;
+ }
+
+ wpid = waitpid(pid, &status, __WALL);
+ if (wpid != pid) {
+ perror("waitpid() failed");
+ return false;
+ }
+ if (WIFEXITED(status)) {
+ printf("child did not single-step\n");
+ return false;
+ }
+ if (!WIFSTOPPED(status)) {
+ printf("child did not stop\n");
+ return false;
+ }
+ if (WSTOPSIG(status) != SIGTRAP) {
+ printf("child did not stop with SIGTRAP\n");
+ return false;
+ }
+
+ if (ptrace(PTRACE_CONT, pid, NULL, NULL) < 0) {
+ perror("ptrace(PTRACE_CONT) failed");
+ return false;
+ }
+
+ wpid = waitpid(pid, &status, __WALL);
+ if (wpid != pid) {
+ perror("waitpid() failed");
+ return false;
+ }
+ if (!WIFEXITED(status)) {
+ printf("child did not exit after PTRACE_CONT\n");
+ return false;
+ }
+
+ return true;
+}
+
+void suspend(void)
+{
+ int power_state_fd;
+ struct sigevent event = {};
+ int timerfd;
+ int err;
+ struct itimerspec spec = {};
+
+ power_state_fd = open("/sys/power/state", O_RDWR);
+ if (power_state_fd < 0) {
+ perror("open(\"/sys/power/state\") failed (is this test running as root?)");
+ ksft_exit_fail();
+ }
+
+ timerfd = timerfd_create(CLOCK_BOOTTIME_ALARM, 0);
+ if (timerfd < 0) {
+ perror("timerfd_create() failed");
+ ksft_exit_fail();
+ }
+
+ spec.it_value.tv_sec = 5;
+ err = timerfd_settime(timerfd, 0, &spec, NULL);
+ if (err < 0) {
+ perror("timerfd_settime() failed");
+ ksft_exit_fail();
+ }
+
+ if (write(power_state_fd, "mem", strlen("mem")) != strlen("mem")) {
+ perror("entering suspend failed");
+ ksft_exit_fail();
+ }
+
+ close(timerfd);
+ close(power_state_fd);
+}
+
+int main(int argc, char **argv)
+{
+ int opt;
+ bool do_suspend = true;
+ bool succeeded = true;
+ cpu_set_t available_cpus;
+ int err;
+ int cpu;
+
+ while ((opt = getopt(argc, argv, "n")) != -1) {
+ switch (opt) {
+ case 'n':
+ do_suspend = false;
+ break;
+ default:
+ printf("Usage: %s [-n]\n", argv[0]);
+ printf(" -n: do not trigger a suspend/resume cycle before the test\n");
+ return -1;
+ }
+ }
+
+ if (do_suspend)
+ suspend();
+
+ err = sched_getaffinity(0, sizeof(available_cpus), &available_cpus);
+ if (err < 0) {
+ perror("sched_getaffinity() failed");
+ ksft_exit_fail();
+ }
+
+ for (cpu = 0; cpu < CPU_SETSIZE; cpu++) {
+ bool test_success;
+
+ if (!CPU_ISSET(cpu, &available_cpus))
+ continue;
+
+ test_success = run_test(cpu);
+ printf("CPU %d: ", cpu);
+ if (test_success) {
+ printf("[OK]\n");
+ ksft_inc_pass_cnt();
+ } else {
+ printf("[FAILED]\n");
+ ksft_inc_fail_cnt();
+ succeeded = false;
+ }
+ }
+
+ ksft_print_cnts();
+ if (succeeded)
+ ksft_exit_pass();
+ else
+ ksft_exit_fail();
+}
--- /dev/null
+/*
+ * media_devkref_test.c - Media Controller Device Kref API Test
+ *
+ * Copyright (c) 2016 Shuah Khan <shuahkh@osg.samsung.com>
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ *
+ * This file is released under the GPLv2.
+ */
+
+/*
+ * This file adds a test for Media Controller API.
+ * This test should be run as root and should not be
+ * included in the Kselftest run. This test should be
+ * run when hardware and driver that makes use Media
+ * Controller API are present in the system.
+ *
+ * This test opens user specified Media Device and calls
+ * MEDIA_IOC_DEVICE_INFO ioctl in a loop once every 10
+ * seconds.
+ *
+ * Usage:
+ * sudo ./media_device_test -d /dev/mediaX
+ *
+ * While test is running, remove the device and
+ * ensure there are no use after free errors and
+ * other Oops in the dmesg. Enable KaSan kernel
+ * config option for use-after-free error detection.
+*/
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <linux/media.h>
+
+int main(int argc, char **argv)
+{
+ int opt;
+ char media_device[256];
+ int count = 0;
+ struct media_device_info mdi;
+ int ret;
+ int fd;
+
+ if (argc < 2) {
+ printf("Usage: %s [-d </dev/mediaX>]\n", argv[0]);
+ exit(-1);
+ }
+
+ /* Process arguments */
+ while ((opt = getopt(argc, argv, "d:")) != -1) {
+ switch (opt) {
+ case 'd':
+ strncpy(media_device, optarg, sizeof(media_device) - 1);
+ media_device[sizeof(media_device)-1] = '\0';
+ break;
+ default:
+ printf("Usage: %s [-d </dev/mediaX>]\n", argv[0]);
+ exit(-1);
+ }
+ }
+
+ if (getuid() != 0) {
+ printf("Please run the test as root - Exiting.\n");
+ exit(-1);
+ }
+
+ /* Open Media device and keep it open */
+ fd = open(media_device, O_RDWR);
+ if (fd == -1) {
+ printf("Media Device open errno %s\n", strerror(errno));
+ exit(-1);
+ }
+
+ printf("\nNote:\n"
+ "While test is running, remove the device and\n"
+ "ensure there are no use after free errors and\n"
+ "other Oops in the dmesg. Enable KaSan kernel\n"
+ "config option for use-after-free error detection.\n\n");
+
+ while (count < 100) {
+ ret = ioctl(fd, MEDIA_IOC_DEVICE_INFO, &mdi);
+ if (ret < 0)
+ printf("Media Device Info errno %s\n", strerror(errno));
+ else
+ printf("Media device model %s driver %s\n",
+ mdi.model, mdi.driver);
+ sleep(10);
+ count++;
+ }
+}
projects / karo-tx-linux.git / commitdiff