/* *  sync test runner *  Copyright 2015-2016 Collabora Ltd. * *  Based on the implementation from the Android Open Source Project, * *  Copyright 2012 Google, Inc * *  Permission is hereby granted, free of charge, to any person obtaining a *  copy of this software and associated documentation files (the "Software"), *  to deal in the Software without restriction, including without limitation *  the rights to use, copy, modify, merge, publish, distribute, sublicense, *  and/or sell copies of the Software, and to permit persons to whom the *  Software is furnished to do so, subject to the following conditions: * *  The above copyright notice and this permission notice shall be included in *  all copies or substantial portions of the Software. * *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *  OTHER DEALINGS IN THE SOFTWARE. */ #include <stdio.h>#include <unistd.h>#include <stdlib.h>#include <sys/types.h>#include <sys/stat.h>#include <sys/wait.h>#include <errno.h>#include <string.h> #include "kselftest.h"#include "synctest.h" static int run_test(int (*test)(void), char *name){	int result;	pid_t childpid;	int ret; 	fflush(stdout);	childpid = fork(); 	if (childpid) {		waitpid(childpid, &result, 0);		if (WIFEXITED(result)) {			ret = WEXITSTATUS(result);			if (!ret)				ksft_test_result_pass("[RUN]\t%s\n", name);			else				ksft_test_result_fail("[RUN]\t%s\n", name);			return ret;		}		return 1;	} 	exit(test());} static void sync_api_supported(void){	struct stat sbuf;	int ret; 	ret = stat("/sys/kernel/debug/sync/sw_sync", &sbuf);	if (!ret)		return; 	if (errno == ENOENT)		ksft_exit_skip("Sync framework not supported by kernel\n"); 	if (errno == EACCES)		ksft_exit_skip("Run Sync test as root.\n"); 	ksft_exit_fail_msg("stat failed on /sys/kernel/debug/sync/sw_sync: %s",				strerror(errno));} int main(void){	int err; 	ksft_print_header(); 	sync_api_supported();	ksft_set_plan(3 + 7); 	ksft_print_msg("[RUN]\tTesting sync framework\n"); 	RUN_TEST(test_alloc_timeline);	RUN_TEST(test_alloc_fence);	RUN_TEST(test_alloc_fence_negative); 	RUN_TEST(test_fence_one_timeline_wait);	RUN_TEST(test_fence_one_timeline_merge);	RUN_TEST(test_fence_merge_same_fence);	RUN_TEST(test_fence_multi_timeline_wait);	RUN_TEST(test_stress_two_threads_shared_timeline);	RUN_TEST(test_consumer_stress_multi_producer_single_consumer);	RUN_TEST(test_merge_stress_random_merge); 	err = ksft_get_fail_cnt();	if (err)		ksft_exit_fail_msg("%d out of %d sync tests failed\n",					err, ksft_test_num()); 	ksft_exit_pass();}