cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

sync_test.c (3057B)

      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
     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}