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>
62 #include <fres_sa_scenario.h>
65 #include <ul_logreg.h>
67 #include <frsh_core.h>
69 UL_LOG_CUST(ulogd_frm_cpucg);
70 ul_log_domain_t ulogd_frm_cpucg = {UL_LOGL_DEB, "frm_cpucg"};
73 * root cgroup`s period
75 static unsigned int global_period_us;
77 * root cgroup`s runtime
79 static unsigned int global_runtime_us;
81 static int cpucg_admtest(struct fres_sa_scenario *scenario, void *priv,
84 struct fres_sa_contract *c;
85 long int period, budget;
86 long int sum_utilization = 0;
88 fres_sa_scenario_for_each_no_cancel_contract(scenario, c) {
89 fres_block_basic *basic;
91 fres_contract_id_to_string(id, &c->contract->id, sizeof(id));
92 basic = fres_contract_get_basic(c->contract);
94 period = fosa_rel_time_to_msec(basic->period);
95 budget = fosa_rel_time_to_msec(basic->budget);
96 printf("processing : id=%s, period=%ld ms, budget=%ld ms\n",
98 //ul_logdeb("processing : id=%s, period=%ld ms, budget=%ld ms\n",
99 // id,period, budget);
101 sum_utilization+= budget*100/period;
103 printf("sum_ut= %ld global_ut=%ld \n", sum_utilization, ((long)global_runtime_us*100/global_period_us));
104 *schedulable = (sum_utilization < (global_runtime_us*100/global_period_us));
105 printf("=> %s\n", (*schedulable)?"schedulable":"not schedulable");
110 static struct fres_res_manager frm = {
111 .res_type = FRSH_RT_PROCESSOR,
114 .admission_test = cpucg_admtest,
118 static struct option long_opts[] = {
119 { "loglevel", 1, 0, 'l' },
126 printf("usage: frm_aqcpu [ options ]\n");
127 printf(" -l, --loglevel <number>|<domain>=<number>,...\n");
130 int forb_main(forb_orb orb, int argc, char *argv[])
135 forb_init_attr_t attr = { .orb_id = "org.frescor.frm.cgcpu" };
136 bool opt_daemon = false;
137 char *opt_pidfile = NULL;
139 ul_logreg_domain(&ulogd_frm_cpucg);
141 while ((opt = getopt_long(argc, argv, "hl:", &long_opts[0], NULL)) != EOF) {
144 ul_log_domain_arg2levels(optarg);
149 exit(opt == 'h' ? 0 : 1);
154 if (!(fd = fopen("/proc/sys/kernel/sched_rt_period_us", "r"))) {
155 error(1, errno, "frm_generic_run");
157 ret = fscanf(fd,"%d", &global_period_us);
158 printf("sched_rt_period_us= %d\n", global_period_us);
159 if (ret == 0 || ret == EOF) {
160 error(1, errno, "frm_generic_run");
164 if (!(fd = fopen("/proc/sys/kernel/sched_rt_runtime_us", "r"))) {
165 error(1, errno, "frm_generic_run");
167 ret = fscanf(fd,"%d", &global_runtime_us);
168 printf("sched_rt_runtime_us= %d\n", global_runtime_us);
169 if (ret == 0 || ret == EOF) {
170 error(1, errno, "frm_generic_run");
174 frm.res_id = frsh_get_local_cpu_id();
175 ret = frm_register_and_run(orb, &frm);
177 error(1, errno, "frm_generic_run");