[LTP] [patch 1/5] The load tasks

[Sudhir K. <sk...@li...>]

The patch adds a binary to be run as load on the machine.

Signed-off-by: Sudhir Kumar <sk...@li...>

Index: ltp-full-20081031/testcases/kernel/controllers/cpuctl/cpuctl_latency_test.c
===================================================================
--- /dev/null
+++ ltp-full-20081031/testcases/kernel/controllers/cpuctl/cpuctl_latency_test.c
@@ -0,0 +1,94 @@
+/******************************************************************************/
+/*                                                                            */
+/* Copyright (c) International Business Machines  Corp., 2008                 */
+/*                                                                            */
+/* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA    */
+/*                                                                            */
+/******************************************************************************/
+
+/******************************************************************************/
+/*                                                                            */
+/* File:        cpuctl_latency_test.c                                         */
+/*                                                                            */
+/* Description: This is a c program that runs a task which tries to keep cpu  */
+/*              busy in doing some calculations. The task will ne used to     */
+/*              check the latency under group scheduling.                     */
+/*              The file is to be used by script                              */
+/*                                                                            */
+/* Total Tests: 2                                                             */
+/*                                                                            */
+/* Test Name:   cpu_controller_latency_tests                                  */
+/*                                                                            */
+/* Test Assertion                                                             */
+/*              Please refer to the file cpuctl_testplan.txt                  */
+/*                                                                            */
+/* Author:      Sudhir Kumar sk...@li...                        */
+/*                                                                            */
+/* History:                                                                   */
+/* Created-     26/11/2008 -Sudhir Kumar <sk...@li...>          */
+/*                                                                            */
+/******************************************************************************/
+
+#include <unistd.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../libcontrollers/libcontrollers.h"
+
+
+extern int Tst_count;
+char *TCID = "cpu_controller_latency_tests";
+int TST_TOTAL = 2;
+
+
+int main(int argc, char *argv[])
+{
+	char mytaskfile[FILENAME_MAX];
+	int test_num;
+
+	if ((argc < 2) || (argc > 3)) {
+		printf("Invalid #args received from script The load tasks will"
+			" not run. So skipping the load creation....\n");
+		exit(1);
+	}
+
+	/* Migrate the task to its group if applicable */
+	test_num = atoi(argv[1]);
+	if (test_num < 0) {
+		printf("Invalid test number received from script."
+						" Skipping load creation ");
+		exit(1);
+	}
+
+	if (test_num == 2) {
+		strncpy(mytaskfile, argv[2], FILENAME_MAX);
+		strncat(mytaskfile, "/tasks",
+					 FILENAME_MAX - strlen(mytaskfile) - 1);
+		write_to_file(mytaskfile, "a", getpid());
+	}
+
+	/*
+	 * Need to run some cpu intensive task. Not sure if it is the best
+	 * workload I can run?
+	 */
+	double f = 27409.345;	/*just a float number for sqrt*/
+
+	while (1)
+		f = sqrt(f * f);
+
+	return 0;
+}