1 /* 2 * Copyright (c) Huawei Technologies Co., Ltd., 2015 3 * This program is free software; you can redistribute it and/or modify 4 * it under the terms of the GNU General Public License as published by 5 * the Free Software Foundation; either version 2 of the License, or 6 * (at your option) any later version. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 11 * the GNU General Public License for more details. 12 */ 13 14 #define _GNU_SOURCE 15 #include <unistd.h> 16 #include <stdio.h> 17 #include <stdlib.h> 18 #include <string.h> 19 #include <time.h> 20 #include <linux/unistd.h> 21 #include <linux/kernel.h> 22 #include <linux/types.h> 23 #include <sys/syscall.h> 24 #include <pthread.h> 25 #include <sched.h> 26 #include <errno.h> 27 28 #include "test.h" 29 #include "lapi/syscalls.h" 30 #include "lapi/sched.h" 31 32 char *TCID = "sched_getattr01"; 33 int TST_TOTAL = 1; 34 35 #define SCHED_DEADLINE 6 36 #define RUNTIME_VAL 10000000 37 #define PERIOD_VAL 30000000 38 #define DEADLINE_VAL 30000000 39 40 void *run_deadline(void *data LTP_ATTRIBUTE_UNUSED) 41 { 42 struct sched_attr attr, attr_copy; 43 int ret; 44 unsigned int flags = 0; 45 unsigned int size; 46 47 attr.size = sizeof(attr); 48 attr.sched_flags = 0; 49 attr.sched_nice = 0; 50 attr.sched_priority = 0; 51 52 /* This creates a 10ms/30ms reservation */ 53 attr.sched_policy = SCHED_DEADLINE; 54 attr.sched_runtime = RUNTIME_VAL; 55 attr.sched_period = PERIOD_VAL; 56 attr.sched_deadline = DEADLINE_VAL; 57 58 ret = sched_setattr(0, &attr, flags); 59 if (ret < 0) 60 tst_brkm(TFAIL | TERRNO, NULL, "sched_setattr() failed"); 61 62 size = sizeof(attr_copy); 63 ret = sched_getattr(0, &attr_copy, size, flags); 64 if (ret < 0) 65 tst_brkm(TFAIL | TERRNO, NULL, "sched_getattr() failed"); 66 67 int fail = 0; 68 69 if (attr_copy.sched_runtime != RUNTIME_VAL) { 70 tst_resm(TINFO, "sched_runtime is incorrect (%"PRIu64")," 71 " expected %u", attr.sched_runtime, RUNTIME_VAL); 72 fail++; 73 } 74 if (attr_copy.sched_period != PERIOD_VAL) { 75 tst_resm(TINFO, "sched_period is incorrect (%"PRIu64")," 76 " expected %u", attr.sched_period, PERIOD_VAL); 77 fail++; 78 } 79 if (attr_copy.sched_deadline != DEADLINE_VAL) { 80 tst_resm(TINFO, "sched_deadline is incorrect (%"PRIu64")," 81 " expected %u", attr.sched_deadline, DEADLINE_VAL); 82 fail++; 83 } 84 85 if (fail) 86 tst_resm(TFAIL, "attributes were read back incorrectly"); 87 else 88 tst_resm(TPASS, "attributes were read back correctly"); 89 90 return NULL; 91 } 92 93 int main(int argc, char **argv) 94 { 95 pthread_t thread; 96 int lc; 97 98 tst_parse_opts(argc, argv, NULL, NULL); 99 100 tst_require_root(); 101 102 if ((tst_kvercmp(3, 14, 0)) < 0) 103 tst_brkm(TCONF, NULL, "EDF needs kernel 3.14 or higher"); 104 105 for (lc = 0; TEST_LOOPING(lc); lc++) { 106 pthread_create(&thread, NULL, run_deadline, NULL); 107 pthread_join(thread, NULL); 108 } 109 110 tst_exit(); 111 } 112
