LXR linux/tools/testing/selftests/sync/sync

   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}
 115