1 /**************************************************************************/
2 /* ---------------------------------------------------------------------- */
3 /* Copyright (C) 2006 - 2008 FRESCOR consortium partners: */
5 /* Universidad de Cantabria, SPAIN */
6 /* University of York, UK */
7 /* Scuola Superiore Sant'Anna, ITALY */
8 /* Kaiserslautern University, GERMANY */
9 /* Univ. Politécnica Valencia, SPAIN */
10 /* Czech Technical University in Prague, CZECH REPUBLIC */
12 /* Thales Communication S.A. FRANCE */
13 /* Visual Tools S.A. SPAIN */
14 /* Rapita Systems Ltd UK */
17 /* See http://www.frescor.org for a link to partners' websites */
19 /* FRESCOR project (FP6/2005/IST/5-034026) is funded */
20 /* in part by the European Union Sixth Framework Programme */
21 /* The European Union is not liable of any use that may be */
22 /* made of this code. */
25 /* This file is part of FRESCOR CPUCG (cpu control group) */
27 /* FWP is free software; you can redistribute it and/or modify it */
28 /* under terms of the GNU General Public License as published by the */
29 /* Free Software Foundation; either version 2, or (at your option) any */
30 /* later version. FWP is distributed in the hope that it will be */
31 /* useful, but WITHOUT ANY WARRANTY; without even the implied warranty */
32 /* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */
33 /* General Public License for more details. You should have received a */
34 /* copy of the GNU General Public License along with FWP; see file */
35 /* COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, */
36 /* Cambridge, MA 02139, USA. */
38 /* As a special exception, including FWP header files in a file, */
39 /* instantiating FWP generics or templates, or linking other files */
40 /* with FWP objects to produce an executable application, does not */
41 /* by itself cause the resulting executable application to be covered */
42 /* by the GNU General Public License. This exception does not */
43 /* however invalidate any other reasons why the executable file might be */
44 /* covered by the GNU Public License. */
45 /**************************************************************************/
49 * @author Martin Molnar <molnam1@fel.cvut.cz>
50 * @date Wed Feb 18 16:24:43 2009
57 #include <frm_generic.h>
61 #include <fres_sa_scenario.h>
66 UL_LOG_CUST(ulogd_frm_cpucg);
67 ul_log_domain_t ulogd_fra_fwp = {UL_LOGL_DEB, "frm_cpucg"};
70 * root cgroup`s period
72 static unsigned int global_period_us;
74 * root cgroup`s runtime
76 static unsigned int global_runtime_us;
78 static int cpucg_admtest(struct fres_sa_scenario *scenario, void *priv,
81 struct fres_sa_contract *c;
82 long int period, budget;
83 long int sum_utilization = 0;
85 fres_sa_scenario_for_each_contract(scenario, c) {
86 fres_block_basic *basic;
88 fres_contract_id_to_string(id, &c->contract->id, sizeof(id));
89 basic = fres_contract_get_basic(c->contract);
91 period = fosa_rel_time_to_msec(basic->period);
92 budget = fosa_rel_time_to_msec(basic->budget);
93 printf("processing : id=%s, period=%ld ms, budget=%ld ms\n",
95 //ul_logdeb("processing : id=%s, period=%ld ms, budget=%ld ms\n",
96 // id,period, budget);
98 sum_utilization+= budget*100/period;
100 printf("sum_ut= %ld global_ut=%ld \n", sum_utilization, (global_runtime_us*100/global_period_us));
101 *schedulable = (sum_utilization < (global_runtime_us*100/global_period_us));
102 printf("=> %s\n", (*schedulable)?"schedulable":"not schedulable");
107 static const struct fres_res_manager frm = {
108 .res_type = FRSH_RT_PROCESSOR,
110 .admission_test = cpucg_admtest,
114 int main(int argc, char *argv[])
120 orb = forb_init(&argc, &argv, "frm_cpucg");
121 if (!orb) error(1, errno, "forb_init");
123 if (!(fd = fopen("/proc/sys/kernel/sched_rt_period_us", "r"))) {
124 error(1, errno, "frm_generic_run");
126 ret = fscanf(fd,"%d", &global_period_us);
127 printf("sched_rt_period_us= %d\n", global_period_us);
128 if (ret == 0 || ret == EOF) {
129 error(1, errno, "frm_generic_run");
133 if (!(fd = fopen("/proc/sys/kernel/sched_rt_runtime_us", "r"))) {
134 error(1, errno, "frm_generic_run");
136 ret = fscanf(fd,"%d", &global_runtime_us);
137 printf("sched_rt_runtime_us= %d\n", global_runtime_us);
138 if (ret == 0 || ret == EOF) {
139 error(1, errno, "frm_generic_run");
143 ret = frm_register_and_run(orb, &frm);
145 error(1, errno, "frm_generic_run");