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 
40 static 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 
65 static 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 
84 int main(void)
85 {
86 	int err;
87 
88 	ksft_print_header();
89 
90 	sync_api_supported();
91 	ksft_set_plan(3 + 7);
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 }
115