selftests: Add support files for powerpc tests

This commit adds support code used by upcoming powerpc tests.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/tools/testing/selftests/powerpc/harness.c b/tools/testing/selftests/powerpc/harness.c
new file mode 100644 (file)
index 0000000..e80c42a
--- /dev/null
+++ b/tools/testing/selftests/powerpc/harness.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2013, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+#include <errno.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include "subunit.h"
+#include "utils.h"
+
+#define TIMEOUT                120
+#define KILL_TIMEOUT   5
+
+
+int run_test(int (test_function)(void), char *name)
+{
+       bool terminated;
+       int rc, status;
+       pid_t pid;
+
+       /* Make sure output is flushed before forking */
+       fflush(stdout);
+
+       pid = fork();
+       if (pid == 0) {
+               exit(test_function());
+       } else if (pid == -1) {
+               perror("fork");
+               return 1;
+       }
+
+       /* Wake us up in timeout seconds */
+       alarm(TIMEOUT);
+       terminated = false;
+
+wait:
+       rc = waitpid(pid, &status, 0);
+       if (rc == -1) {
+               if (errno != EINTR) {
+                       printf("unknown error from waitpid\n");
+                       return 1;
+               }
+
+               if (terminated) {
+                       printf("!! force killing %s\n", name);
+                       kill(pid, SIGKILL);
+                       return 1;
+               } else {
+                       printf("!! killing %s\n", name);
+                       kill(pid, SIGTERM);
+                       terminated = true;
+                       alarm(KILL_TIMEOUT);
+                       goto wait;
+               }
+       }
+
+       if (WIFEXITED(status))
+               status = WEXITSTATUS(status);
+       else {
+               if (WIFSIGNALED(status))
+                       printf("!! child died by signal %d\n", WTERMSIG(status));
+               else
+                       printf("!! child died by unknown cause\n");
+
+               status = 1; /* Signal or other */
+       }
+
+       return status;
+}
+
+static void alarm_handler(int signum)
+{
+       /* Jut wake us up from waitpid */
+}
+
+static struct sigaction alarm_action = {
+       .sa_handler = alarm_handler,
+};
+
+int test_harness(int (test_function)(void), char *name)
+{
+       int rc;
+
+       test_start(name);
+       test_set_git_version(GIT_VERSION);
+
+       if (sigaction(SIGALRM, &alarm_action, NULL)) {
+               perror("sigaction");
+               test_error(name);
+               return 1;
+       }
+
+       rc = run_test(test_function, name);
+
+       test_finish(name, rc);
+
+       return rc;
+}

diff --git a/tools/testing/selftests/powerpc/subunit.h b/tools/testing/selftests/powerpc/subunit.h
new file mode 100644 (file)
index 0000000..98a2292
--- /dev/null
+++ b/tools/testing/selftests/powerpc/subunit.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2013, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+#ifndef _SELFTESTS_POWERPC_SUBUNIT_H
+#define _SELFTESTS_POWERPC_SUBUNIT_H
+
+static inline void test_start(char *name)
+{
+       printf("test: %s\n", name);
+}
+
+static inline void test_failure_detail(char *name, char *detail)
+{
+       printf("failure: %s [%s]\n", name, detail);
+}
+
+static inline void test_failure(char *name)
+{
+       printf("failure: %s\n", name);
+}
+
+static inline void test_error(char *name)
+{
+       printf("error: %s\n", name);
+}
+
+static inline void test_success(char *name)
+{
+       printf("success: %s\n", name);
+}
+
+static inline void test_finish(char *name, int status)
+{
+       if (status)
+               test_failure(name);
+       else
+               test_success(name);
+}
+
+static inline void test_set_git_version(char *value)
+{
+       printf("tags: git_version:%s\n", value);
+}
+
+#endif /* _SELFTESTS_POWERPC_SUBUNIT_H */

diff --git a/tools/testing/selftests/powerpc/utils.h b/tools/testing/selftests/powerpc/utils.h
new file mode 100644 (file)
index 0000000..5851c4b
--- /dev/null
+++ b/tools/testing/selftests/powerpc/utils.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2013, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+#ifndef _SELFTESTS_POWERPC_UTILS_H
+#define _SELFTESTS_POWERPC_UTILS_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+/* Avoid headaches with PRI?64 - just use %ll? always */
+typedef unsigned long long u64;
+typedef   signed long long s64;
+
+/* Just for familiarity */
+typedef uint32_t u32;
+typedef uint8_t u8;
+
+
+int test_harness(int (test_function)(void), char *name);
+
+
+/* Yes, this is evil */
+#define FAIL_IF(x)                                             \
+do {                                                           \
+       if ((x)) {                                              \
+               fprintf(stderr,                                 \
+               "[FAIL] Test FAILED on line %d\n", __LINE__);   \
+               return 1;                                       \
+       }                                                       \
+} while (0)
+
+#endif /* _SELFTESTS_POWERPC_UTILS_H */