1/*
  2 *  sync test runner
  3 *  Copyright 2015-2016 Collabora Ltd.
  4 *
  5 *  Based on the implementation from the Android Open Source Project,
  6 *
  7 *  Copyright 2012 Google, Inc
  8 *
  9 *  Permission is hereby granted, free of charge, to any person obtaining a
 10 *  copy of this software and associated documentation files (the "Software"),
 11 *  to deal in the Software without restriction, including without limitation
 12 *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
 13 *  and/or sell copies of the Software, and to permit persons to whom the
 14 *  Software is furnished to do so, subject to the following conditions:
 15 *
 16 *  The above copyright notice and this permission notice shall be included in
 17 *  all copies or substantial portions of the Software.
 18 *
 19 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 20 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 21 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 22 *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 23 *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 24 *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 25 *  OTHER DEALINGS IN THE SOFTWARE.
 26 */
 27
 28#include <stdio.h>
 29#include <unistd.h>
 30#include <stdlib.h>
 31#include <sys/types.h>
 32#include <sys/stat.h>
 33#include <sys/wait.h>
 34#include <errno.h>
 35#include <string.h>
 36
 37#include "../kselftest.h"
 38#include "synctest.h"
 39
 40static int run_test(int (*test)(void), char *name)
 41{
 42	int result;
 43	pid_t childpid;
 44	int ret;
 45
 46	fflush(stdout);
 47	childpid = fork();
 48
 49	if (childpid) {
 50		waitpid(childpid, &result, 0);
 51		if (WIFEXITED(result)) {
 52			ret = WEXITSTATUS(result);
 53			if (!ret)
 54				ksft_test_result_pass("[RUN]\t%s\n", name);
 55			else
 56				ksft_test_result_fail("[RUN]\t%s\n", name);
 57			return ret;
 58		}
 59		return 1;
 60	}
 61
 62	exit(test());
 63}
 64
 65static void sync_api_supported(void)
 66{
 67	struct stat sbuf;
 68	int ret;
 69
 70	ret = stat("/sys/kernel/debug/sync/sw_sync", &sbuf);
 71	if (!ret)
 72		return;
 73
 74	if (errno == ENOENT)
 75		ksft_exit_skip("Sync framework not supported by kernel\n");
 76
 77	if (errno == EACCES)
 78		ksft_exit_skip("Run Sync test as root.\n");
 79
 80	ksft_exit_fail_msg("stat failed on /sys/kernel/debug/sync/sw_sync: %s",
 81				strerror(errno));
 82}
 83
 84int main(void)
 85{
 86	int err;
 87
 88	ksft_print_header();
 89	ksft_set_plan(3 + 7);
 90
 91	sync_api_supported();
 92
 93	ksft_print_msg("[RUN]\tTesting sync framework\n");
 94
 95	RUN_TEST(test_alloc_timeline);
 96	RUN_TEST(test_alloc_fence);
 97	RUN_TEST(test_alloc_fence_negative);
 98
 99	RUN_TEST(test_fence_one_timeline_wait);
100	RUN_TEST(test_fence_one_timeline_merge);
101	RUN_TEST(test_fence_merge_same_fence);
102	RUN_TEST(test_fence_multi_timeline_wait);
103	RUN_TEST(test_stress_two_threads_shared_timeline);
104	RUN_TEST(test_consumer_stress_multi_producer_single_consumer);
105	RUN_TEST(test_merge_stress_random_merge);
106
107	err = ksft_get_fail_cnt();
108	if (err)
109		ksft_exit_fail_msg("%d out of %d sync tests failed\n",
110					err, ksft_test_num());
111
112	/* need this return to keep gcc happy */
113	return ksft_exit_pass();
114}