[pm-qa 11/14] add a cpu burn utility

[Daniel Lezcano]

A very simple program, similar to cpucycle, but doing nothing more than looping
indefinitively.

Signed-off-by: Daniel Lezcano <daniel.lezc...@linaro.org>
---
 utils/cpuburn.c |   91 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 91 insertions(+), 0 deletions(-)
 create mode 100644 utils/cpuburn.c

diff --git a/utils/cpuburn.c b/utils/cpuburn.c
new file mode 100644
index 0000000..12e82c0
--- /dev/null
+++ b/utils/cpuburn.c
@@ -0,0 +1,91 @@
+/*******************************************************************************
+ * PM-QA validation test suite for the power management on ARM
+ *
+ * Copyright (C) 2011, Linaro Limited.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
USA.
+ *
+ * Contributors:
+ *     Daniel Lezcano <daniel.lezc...@linaro.org> (IBM Corporation)
+ *       - initial API and implementation
+ *
+ 
*******************************************************************************/
+
+#define _GNU_SOURCE
+#include <sched.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <signal.h>
+#include <unistd.h>
+#include <regex.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+int main(int argc, char *argv[])
+{
+       regex_t reg;
+       const char *regex = "cpu[0-9].*";
+       char **aargv = NULL;
+       regmatch_t m[1];
+       cpu_set_t cpuset;
+       int i;
+
+       if (argc == 1) {
+               fprintf(stderr, "%s <cpuN> [cpuM] ... \n", argv[0]);
+               return 1;
+       }
+
+       aargv = &argv[1];
+
+       if (regcomp(&reg, regex, 0)) {
+               fprintf(stderr, "failed to compile the regex\n");
+               return 1;
+       }
+
+       CPU_ZERO(&cpuset);
+
+       for (i = 0; i < (argc - 1); i++) {
+
+               char *aux;
+               int cpu;
+
+               if (regexec(&reg, aargv[i], 1, m, 0)) {
+                       fprintf(stderr, "'%s' parameter not recognized, " \
+                               "should be cpu[0-9]\n", aargv[i]);
+                       return 1;
+               }
+
+               aux = aargv[i] + 3;
+               cpu = atoi(aux);
+
+               CPU_SET(cpu, &cpuset);
+       }
+
+       if (sched_setaffinity(0, sizeof(cpuset), &cpuset)) {
+               perror("sched_setaffinity");
+               return 1;
+       }
+
+       if (setpriority(PRIO_PROCESS, 0, -20) < 0) {
+               perror("setpriority");
+               return 1;
+       }
+
+       for (;;);
+
+       return 0;
+}
-- 
1.7.4.1


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