tests: move jittertest to tests directory

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 0 insertions, 1044 deletions

diff --git a/jittertest/JitterTest.c b/jittertest/JitterTest.c
deleted file mode 100644
index 13c64d9..0000000
--- a/jittertest/JitterTest.c
+++ /dev/null
@@ -1,1044 +0,0 @@
-/***********************************************************************
- *
- *  Copyright:          Daniel Measurement and Control, Inc.
- *                           9753 Pine Lake Drive
- *                             Houston, TX 77055
- *
- *  Created by: Vipin Malik and Gail Murray
- *  Released under GPL by permission of Daniel Industries.
- *
- * This software is licensed under the GPL version 2. Plese see the file
- * COPYING for details on the license.
- *
- * NO WARRANTY: Absolutely no claims of warranty or fitness of purpose
- *              are made in this software. Please use at your own risk.
- *
- *  Filename:     JitterTest.c
- *
- *  Description:  Program to be used to measure wake jitter.
- *                See README file for more info.
- *
- *
- *  Revision History:
- *  $Id: JitterTest.c,v 1.13 2005/11/07 11:15:20 gleixner Exp $
- *  $Log: JitterTest.c,v $
- *  Revision 1.13  2005/11/07 11:15:20  gleixner
- *  [MTD / JFFS2] Clean up trailing white spaces
- *
- *  Revision 1.12  2001/08/10 19:23:11  vipin
- *  Ready to be released under GPL! Added proper headers etc.
- *
- *  Revision 1.11  2001/07/09 15:35:50  vipin
- *  Couple of new features:1. The program runs by default as a "regular"
- *  (SCHED_OTHER) task by default, unless the -p n cmd line parameter is
- *  specified. It then runs as SCHED_RR at that priority.
- *  2. Added ability to send SIGSTOP/SIGCONT to a specified PID. This
- *  would presumably be the PID of the JFFS2 GC task. SIGSTOP is sent
- *  before writing to the fs, and a SIGCONT after the write is done.
- *  3. The "pad" data now written to the file on the "fs under test" is
- *  random, not sequential as previously.
- *
- *  Revision 1.10  2001/06/27 19:14:24  vipin
- *  Now console file to log at can be specified from cmd line. This can enable
- *  you to run two instances of the program- one logging to the /dev/console
- *  and another to a regular file (if you want the data) or /dev/null if you don't.
- *
- *  Revision 1.9  2001/06/25 20:21:31  vipin
- *  This is the latest version, NOT the one last checked in!
- *
- *  Revision 1.7  2001/06/18 22:36:19  vipin
- *  Fix minor typo that excluded '\n' from msg on console.
- *
- *  Revision 1.6  2001/06/18 21:17:50  vipin
- *  Added option to specify the amount of data written to outfile each period.
- *  The regular info is written, but is then padded to the requested size.
- *  This will enable testing of different sized writes to JFFS fs.
- *
- *  Revision 1.5  2001/06/08 19:36:23  vipin
- *  All write() are now checked for return err code.
- *
- *  Revision 1.4  2001/06/06 23:10:31  vipin
- *  Added README file.
- *  In JitterTest.c: Changed operation of periodic timer to one shot. The timer is now
- *  reset when the task wakes. This way every "jitter" is from the last time and
- *  jitters from previous times are not accumulated and screw aroud with our display.
- *
- *  All jitter is now +ve. (as it should be). Also added a "read file" functionality
- *  to test for jitter in task if we have to read from JFFS fs.
- *  The program now also prints data to console- where it can be logged, interspersed with
- *  other "interesting" printk's from the kernel and drivers (flash sector erases etc.)
- *
- *  Revision 1.3  2001/03/01 19:20:39  gmurray
- *  Add priority scheduling. Shortened name of default output file.
- *  Changed default interrupt period. Output delta time and jitter
- *  instead of time of day.
- *
- *  Revision 1.2  2001/02/28 16:20:19  vipin
- *  Added version control Id and log fields.
- *
- ***********************************************************************/
-/*************************** Included Files ***************************/
-#include <stdio.h>      /* fopen, printf, fprintf, fclose */
-#include <string.h>     /* strcpy, strcmp */
-#include <stdlib.h>     /* exit, atol, atoi */
-#include <sys/time.h>   /* setitimer, settimeofday, gettimeofday */
-#include <signal.h>     /* signal */
-#include <sched.h>      /* sched_setscheduler, sched_get_priority_min,*/
-/*   sched_get_priority_max */
-#include <unistd.h>     /* gettimeofday, sleep */
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-
-
-
-/**************************** Enumerations ****************************/
-enum timerActions
-    {
-        ONESHOT,
-        AUTORESETTING
-    };
-
-
-
-/****************************** Constants *****************************/
-/* Exit error codes */
-#define EXIT_FILE_OPEN_ERR        (1)     /* error opening output file*/
-#define EXIT_REG_SIGALRM_ERR      (2)     /* error registering SIGALRM*/
-#define EXIT_REG_SIGINT_ERR       (3)     /* error registering SIGINT */
-#define EXIT_INV_INT_PERIOD       (4)     /* error invalid int. period*/
-#define EXIT_MIN_PRIORITY_ERR     (5)     /* error, minimum priority  */
-#define EXIT_MAX_PRIORITY_ERR     (6)     /* error, maximum priority  */
-#define EXIT_INV_SCHED_PRIORITY   (7)     /* error, invalid priority  */
-#define EXIT_SET_SCHEDULER_ERR    (8)     /* error, set scheduler     */
-#define EXIT_PREV_TIME_OF_DAY_ERR (9)     /* error, init. prev.       */
-/*   time of day            */
-
-#define MAX_FILE_NAME_LEN         (32)    /* maximum file name length */
-
-#define STRINGS_EQUAL             ((int) 0) /* strcmp value if equal  */
-
-#define MIN_INT_PERIOD_MILLISEC   (   5L) /* minimum interrupt period */
-#define MAX_INT_PERIOD_MILLISEC   (5000L) /* maximum interrupt period */
-#define DEF_INT_PERIOD_MILLISEC   (  10L) /* default interrupt period */
-
-#define READ_FILE_MESSAGE "This is a junk file. Must contain at least 1 byte though!\n"
-
-/* The user can specify that the program pad out the write file to
-   a given number of bytes. But a minimum number needs to be written. This
-   will contain the jitter info.
-*/
-#define MIN_WRITE_BYTES     30
-#define DEFAULT_WRITE_BYTES 30
-#define MAX_WRITE_BYTES 4096
-
-/* used for gen a printable ascii random # between spc and '~' */
-#define MIN_ASCII 32     /* <SPACE> can be char*/
-#define MAX_ASCII 126.0 /* needs to be float. See man rand()  */
-
-/*----------------------------------------------------------------------
- * It appears that the preprocessor can't handle multi-line #if
- * statements. Thus, the check on the default is divided into two
- * #if statements.
- *---------------------------------------------------------------------*/
-#if (DEF_INT_PERIOD_MILLISEC < MIN_INT_PERIOD_MILLISEC)
-#error *** Invalid default interrupt period. ***
-#endif
-
-#if (DEF_INT_PERIOD_MILLISEC > MAX_INT_PERIOD_MILLISEC)
-#error *** Invalid default interrupt period. ***
-#endif
-
-
-#define TRUE                      1  /* Boolean true value       */
-#define FALSE                     0
-
-/* Time conversion constants. */
-#define MILLISEC_PER_SEC          (1000L) /* milliseconds per second  */
-#define MICROSEC_PER_MILLISEC     (1000L) /* microsecs per millisec   */
-#define MICROSEC_PER_SEC          (1000000L) /* microsecs per second  */
-
-#define PRIORITY_POLICY           ((int) SCHED_RR) /* If specified iwth "-p" */
-
-
-
-/************************** Module Variables **************************/
-/* version identifier (value supplied by CVS)*/
-static const char Version[] = "$Id: JitterTest.c,v 1.13 2005/11/07 11:15:20 gleixner Exp $";
-
-static char OutFileName[MAX_FILE_NAME_LEN+1];  /* output file name            */
-static char LogFile[MAX_FILE_NAME_LEN+1] = "/dev/console"; /* default */
-static char ReadFile[MAX_FILE_NAME_LEN+1]; /* This file is read. Should
-                                              contain at least 1 byte */
-
-static int WriteBytes = DEFAULT_WRITE_BYTES; /* pad out file to these many bytes. */
-static int Fd1;                        /* fd where the above buffer if o/p */
-static int Cfd;                        /* fd to console (or file specified) */
-static int Fd2;                        /* fd for the ReadFile         */
-static int DoRead = FALSE;             /* should we attempt to ReadFile?*/
-static long InterruptPeriodMilliSec;   /* interrupt period, millisec  */
-static int MinPriority;                /* minimum scheduler priority  */
-static int MaxPriority;                /* maximum scheduler priority  */
-static int RequestedPriority;          /* requested priority          */
-static struct itimerval ITimer;        /* interrupt timer structure   */
-static struct timeval PrevTimeVal;     /* previous time structure     */
-static struct timeval CurrTimeVal;     /* current time structure      */
-static long LastMaxDiff = 0; /* keeps track of worst jitter encountered */
-
-static int GrabKProfile = FALSE; /* To help determine system bottle necks
-                                    this parameter can be set. This causes
-                                    the /proc/profile file to be read and
-                                    stored in unique filenames in current
-                                    dir, and indication to be o/p on the
-                                    /dev/console also.
-                                 */
-static long ProfileTriggerMSecs = 15000l; /* Jitter time in seconds that triggers
-                                       a snapshot of the profile to be taken
-
-                                    */
-static int SignalGCTask = FALSE; /* should be signal SIGSTOP/SIGCONT to gc task?*/
-static int GCTaskPID;
-
-static int RunAsRTTask = FALSE; /* default action unless priority is
-				   specified on cmd line */
-
-
-/********************* Local Function Prototypes **********************/
-void HandleCmdLineArgs(int argc, char *argv[]);
-void SetFileName(char * pFileName);
-void SetInterruptPeriod(char * pASCIIInterruptPeriodMilliSec);
-void SetSchedulerPriority(char * pASCIISchedulerPriority);
-
-void PrintVersionInfo(void);
-void PrintHelpInfo(void);
-
-int Write(int fd, void *buf, size_t bytes, int lineNo);
-
-void InitITimer(struct itimerval * pITimer, int action);
-
-/* For catching timer interrupts (SIGALRM). */
-void AlarmHandler(int sigNum);
-
-/* For catching Ctrl+C SIGINT. */
-void SignalHandler(int sigNum);
-
-
-
-/***********************************************************************
- *  main function
- *  return: exit code
- ***********************************************************************/
-int main(
-    int argc,
-    char *argv[])
-{
-    struct sched_param schedParam;
-
-    int mypri;
-    char tmpBuf[200];
-
-
-    strcpy(OutFileName,"jitter.dat");
-    InterruptPeriodMilliSec = MIN_INT_PERIOD_MILLISEC;
-
-    /* Get the minimum and maximum priorities. */
-    MinPriority = sched_get_priority_min(PRIORITY_POLICY);
-    MaxPriority = sched_get_priority_max(PRIORITY_POLICY);
-    if (MinPriority == -1) {
-        printf("\n*** Unable to get minimum priority. ***\n");
-        exit(EXIT_MIN_PRIORITY_ERR);
-    }
-    if (MaxPriority == -1) {
-        printf("\n*** Unable to get maximum priority. ***\n");
-        exit(EXIT_MAX_PRIORITY_ERR);
-    }
-
-    /* Set requested priority to minimum value as default. */
-    RequestedPriority = MinPriority;
-
-    HandleCmdLineArgs(argc, argv);
-
-    if(mlockall(MCL_CURRENT|MCL_FUTURE) < 0){
-        printf("Could not lock task into memory. Bye\n");
-        perror("Error");
-    }
-
-    if(RunAsRTTask){
-
-        /* Set the priority. */
-        schedParam.sched_priority = RequestedPriority;
-	if (sched_setscheduler(
-			       0,
-			       PRIORITY_POLICY,
-			       &schedParam) != (int) 0) {
-	  printf("Exiting: Unsuccessful sched_setscheduler.\n");
-	  close(Fd1);
-	  exit(EXIT_SET_SCHEDULER_ERR);
-	}
-
-
-	/* Double check as I have some doubts that it's really
-	   running at realtime priority! */
-	if((mypri = sched_getscheduler(0)) != RequestedPriority)
-	  {
-	    printf("Not running with request priority %i. running with priority %i instead!\n",
-		   RequestedPriority, mypri);
-	  }else
-	    {
-	      printf("Running with %i priority. Good!\n", mypri);
-	    }
-
-    }
-
-    /*------------------------- Initializations --------------------------*/
-    if((Fd1 = open(OutFileName, O_RDWR|O_CREAT|O_SYNC)) <= 0)
-    {
-        perror("Cannot open outfile for write:");
-        exit(1);
-    }
-
-    /* If a request is made to read from a specified file, then create that
-       file and fill with junk data so that there is something there to read.
-    */
-    if(DoRead)
-    {
-
-        if((Fd2 = open(ReadFile, O_RDWR|O_CREAT|O_SYNC|O_TRUNC)) <= 0)
-        {
-            perror("cannot open read file:");
-            exit(1);
-        }else
-        {
-
-            /* Don't really care how much we write here */
-            if(write(Fd2, READ_FILE_MESSAGE, strlen(READ_FILE_MESSAGE)) < 0)
-            {
-                perror("Problems writing to readfile:");
-                exit(1);
-            }
-            lseek(Fd2, 0, SEEK_SET); /* position back to byte #0 */
-        }
-    }
-
-
-
-    /* Also log output to console. This way we can capture it
-       on a serial console to a log file.
-    */
-    if((Cfd   = open(LogFile, O_WRONLY|O_SYNC)) <= 0)
-    {
-        perror("cannot open o/p logfile:");
-        exit(1);
-    }
-
-
-    /* Set-up handler for periodic interrupt. */
-    if (signal(SIGALRM, &AlarmHandler) == SIG_ERR) {
-        printf("Couldn't register signal handler for SIGALRM.\n");
-        sprintf(tmpBuf,
-                "Couldn't register signal handler for SIGALRM.\n");
-        Write(Fd1, tmpBuf, strlen(tmpBuf), __LINE__);
-
-        close(Fd1);
-        exit(EXIT_REG_SIGALRM_ERR);
-    }
-
-    /* Set-up handler for Ctrl+C to exit the program. */
-    if (signal(SIGINT, &SignalHandler) == SIG_ERR) {
-        printf("Couldn't register signal handler for SIGINT.\n");
-        sprintf(tmpBuf,
-                "Couldn't register signal handler for SIGINT.\n");
-        Write(Fd1, tmpBuf, strlen(tmpBuf), __LINE__);
-
-        close(Fd1);
-        exit(EXIT_REG_SIGINT_ERR);
-    }
-
-    printf("Press Ctrl+C to exit the program.\n");
-    printf("Output File:        %s\n", OutFileName);
-    printf("Scheduler priority: %d\n", RequestedPriority);
-    sprintf(tmpBuf, "\nScheduler priority: %d\n",
-            RequestedPriority);
-    Write(Fd1, tmpBuf, strlen(tmpBuf), __LINE__);
-
-    Write(Cfd, tmpBuf, strlen(tmpBuf), __LINE__);
-
-    printf("Interrupt period:   %ld milliseconds\n",
-           InterruptPeriodMilliSec);
-    sprintf(tmpBuf, "Interrupt period:   %ld milliseconds\n",
-            InterruptPeriodMilliSec);
-
-    Write(Fd1, tmpBuf, strlen(tmpBuf), __LINE__);
-
-    Write(Cfd, tmpBuf, strlen(tmpBuf), __LINE__);
-
-
-    fflush(0);
-
-
-
-    /* Initialize the periodic timer. */
-    InitITimer(&ITimer, ONESHOT);
-
-    /* Initialize "previous" time. */
-    if (gettimeofday(&PrevTimeVal, NULL) != (int) 0) {
-        printf("Exiting - ");
-        printf("Unable to initialize previous time of day.\n");
-        sprintf(tmpBuf, "Exiting - ");
-        Write(Fd1, tmpBuf, strlen(tmpBuf), __LINE__);
-
-        sprintf(tmpBuf,
-                "Unable to initialize previous time of day.\n");
-
-        Write(Fd1, tmpBuf, strlen(tmpBuf), __LINE__);
-
-    }
-
-    /* Start the periodic timer. */
-    setitimer(ITIMER_REAL, &ITimer, NULL);
-
-
-    while(TRUE) {    /* Intentional infinite loop. */
-        /* Sleep for one second. */
-        sleep((unsigned int) 1);
-    }
-
-    /* Just in case. File should be closed in SignalHandler. */
-    close(Fd1);
-    close(Cfd);
-
-    return 0;
-}
-
-
-
-
-/***********************************************************************
- *                                SignalHandler
- *  This is a handler for the SIGINT signal. It is assumed that the
- *  SIGINT is due to the user pressing Ctrl+C to halt the program.
- *  output: N/A
- ***********************************************************************/
-void SignalHandler(
-    int sigNum)
-{
-
-    char tmpBuf[200];
-
-    /* Note sigNum not used. */
-    printf("Ctrl+C detected. Worst Jitter time was:%fms.\nJitterTest exiting.\n",
-           (float)LastMaxDiff/1000.0);
-
-    sprintf(tmpBuf,
-            "\nCtrl+C detected. Worst Jitter time was:%fms\nJitterTest exiting.\n",
-            (float)LastMaxDiff/1000.0);
-    Write(Fd1, tmpBuf, strlen(tmpBuf), __LINE__);
-
-    Write(Cfd, tmpBuf, strlen(tmpBuf), __LINE__);
-
-    close(Fd1);
-    close(Cfd);
-    exit(0);
-}
-
-
-
-
-
-/*
-  A snapshot of the /proc/profile needs to be taken.
-  This is stored as a new file every time, and the
-  stats reset by doing a (any) write to the /proc/profile
-  file.
- */
-void doGrabKProfile(int jitterusec, char *fileName)
-{
-    int fdSnapshot;
-    int fdProfile;
-    int readBytes;
-    char readBuf[4096];
-
-    if((fdSnapshot = open(fileName, O_WRONLY | O_CREAT)) <= 0)
-    {
-        fprintf(stderr, "Could not open file %s.\n", fileName);
-        perror("Error:");
-        return;
-    }
-
-    if((fdProfile = open("/proc/profile", O_RDWR)) <= 0)
-    {
-        fprintf(stderr, "Could not open file /proc/profile. Make sure you booted with profile=2\n");
-        close(fdSnapshot);
-        return;
-    }
-
-    while((readBytes = read(fdProfile, readBuf, sizeof(readBuf))) > 0)
-    {
-        write(fdSnapshot, readBuf, readBytes);
-    }
-
-    close(fdSnapshot);
-
-    if(write(fdProfile, readBuf, 1) != 1)
-    {
-        perror("Could Not clear profile by writing to /proc/profile:");
-    }
-
-    close(fdProfile);
-
-
-
-}/* end doGrabKProfile()*/
-
-
-/*
-  Call this routine to clear the kernel profiling buffer /proc/profile
-*/
-void clearProfileBuf(void){
-
-
-  int fdProfile;
-  char readBuf[10];
-
-
-  if((fdProfile = open("/proc/profile", O_RDWR)) <= 0)
-    {
-      fprintf(stderr, "Could not open file /proc/profile. Make sure you booted with profile=2\n");
-      return;
-    }
-
-
-  if(write(fdProfile, readBuf, 1) != 1)
-    {
-      perror("Could Not clear profile by writing to /proc/profile:");
-    }
-
-  close(fdProfile);
-
-
-}/* end clearProfileBuf() */
-
-
-
-
-
-/***********************************************************************
- *                                AlarmHandler
- *  This is a handler for the SIGALRM signal (due to the periodic
- *  timer interrupt). It prints the time (seconds) to
- *  the output file.
- *  output: N/A
- ***********************************************************************/
-void AlarmHandler(
-    int sigNum)                     /* signal number (not used)         */
-{
-
-    long timeDiffusec;  /* diff time in micro seconds */
-    long intervalusec;
-
-
-    char tmpBuf[MAX_WRITE_BYTES];
-    int cntr;
-    char padChar;
-
-    static int profileFileNo = 0;
-    char profileFileName[150];
-
-    static int seedStarter = 0; /* carries over rand info to next time
-				   where time() will be the same as this time
-				   if invoked < 1sec apart.
-				*/
-
-    if (gettimeofday(&CurrTimeVal, NULL) == (int) 0) {
-
-        /*----------------------------------------------------------------
-         * Compute the elapsed time between the current and previous
-         * time of day values and store the result.
-         *
-         * Print the elapsed time to the output file.
-         *---------------------------------------------------------------*/
-
-        timeDiffusec = (long)(((((long long)CurrTimeVal.tv_sec) * 1000000L) + CurrTimeVal.tv_usec) -
-                        (((long long)PrevTimeVal.tv_sec * 1000000L) + PrevTimeVal.tv_usec));
-
-        sprintf(tmpBuf," %f ms  ", (float)timeDiffusec/1000.0);
-
-        intervalusec = InterruptPeriodMilliSec * 1000L;
-
-        timeDiffusec = timeDiffusec - intervalusec;
-
-        sprintf(&tmpBuf[strlen(tmpBuf)]," %f ms", (float)timeDiffusec/1000.0);
-
-
-	/* should we send a SIGSTOP/SIGCONT to the specified PID? */
-	if(SignalGCTask){
-
-	  if(kill(GCTaskPID, SIGSTOP) < 0){
-
-	    perror("error:");
-	  }
-	}
-
-
-        /* Store some historical #'s */
-        if(abs(timeDiffusec) > LastMaxDiff)
-	{
-            LastMaxDiff = abs(timeDiffusec);
-            sprintf(&tmpBuf[strlen(tmpBuf)],"!");
-
-	    if((GrabKProfile == TRUE) && (ProfileTriggerMSecs < (abs(timeDiffusec)/1000)))
-	      {
-		  sprintf(profileFileName, "JitterTest.profilesnap-%i", profileFileNo);
-
-		  /* go and grab the kernel performance profile. */
-		  doGrabKProfile(timeDiffusec, profileFileName);
-		  profileFileNo++; /* unique name next time */
-
-		  /* Say so on the console so that a marker gets put in the console log */
-		  sprintf(&tmpBuf[strlen(tmpBuf)],"<Profile saved in file:%s>",
-			  profileFileName);
-
-	      }
-
-        }
-
-
-
-
-        sprintf(&tmpBuf[strlen(tmpBuf)],"\n"); /* CR for the data going out of the console */
-
-        Write(Cfd, tmpBuf, strlen(tmpBuf), __LINE__);
-
-
-        /* The "-1" below takes out the '\n' at the end that we appended for the msg printed on
-         the console.*/
-        sprintf(&tmpBuf[strlen(tmpBuf)-1]," PadBytes:");
-
-        /* Now pad the output file if requested by user. */
-        if(WriteBytes > MIN_WRITE_BYTES)
-        {
-
-	    /* start from a new place every time */
-	    srand(time(NULL) + seedStarter);
-
-            /* already written MIN_WRITE_BYTES by now */
-            for(cntr = strlen(tmpBuf); cntr < WriteBytes - 1 ; cntr++) /* "-1" adj for '\n' at end */
-            {
-	        /* don't accept any # < 'SPACE' */
-	        padChar = (char)(MIN_ASCII+(int)((MAX_ASCII-(float)MIN_ASCII)*rand()/(RAND_MAX+1.0)));
-
-
-                /*
-                padChar = (cntr % (126-33)) + 33;
-		*/
-
-                tmpBuf[cntr] = padChar;
-            }
-
-	    seedStarter = tmpBuf[cntr-1]; /* save for next time */
-
-            tmpBuf[cntr] = '\n'; /* CR for the data going into the outfile. */
-            tmpBuf[cntr+1] = '\0'; /* NULL terminate the string */
-        }
-
-        /* write out the entire line to the output file. */
-        Write(Fd1, tmpBuf, strlen(tmpBuf), __LINE__);
-
-
-        /* Read a byte from the specified file */
-        if(DoRead)
-        {
-
-            read(Fd2, tmpBuf, 1);
-            lseek(Fd2, 0, SEEK_SET); /* back to start */
-        }
-
-
-        /* Start the periodic timer again. */
-        setitimer(ITIMER_REAL, &ITimer, NULL);
-
-
-        /* Update previous time with current time. */
-        PrevTimeVal.tv_sec  = CurrTimeVal.tv_sec;
-        PrevTimeVal.tv_usec = CurrTimeVal.tv_usec;
-    }
-
-    else {
-        sprintf(tmpBuf, "gettimeofday error \n");
-        Write(Fd1, tmpBuf, strlen(tmpBuf), __LINE__);
-
-        printf("gettimeofday error \n");
-    }
-
-    /* now clear the profiling buffer */
-    if(GrabKProfile == TRUE){
-
-      clearProfileBuf();
-    }
-
-    /* should we send a SIGSTOP/SIGCONT to the specified PID? */
-    if(SignalGCTask){
-
-      if(kill(GCTaskPID, SIGCONT) < 0){
-
-	perror("error:");
-      }
-    }
-
-
-    return;
-}
-
-
-
-/***********************************************************************
- *                                 InitITimer
- *  This function initializes the 'struct itimerval' structure whose
- *  address is passed to interrupt every InterruptPeriodMilliSec.
- *  output: N/A
- ***********************************************************************/
-void InitITimer(
-    struct itimerval * pITimer,      /* pointer to interrupt timer struct*/
-    int action)                      /* ONESHOT or autosetting? */
-{
-    long seconds;                   /* seconds portion of int. period   */
-    long microSeconds;              /* microsec. portion of int. period */
-
-    /*--------------------------------------------------------------------
-     * Divide the desired interrupt period into its seconds and
-     * microseconds components.
-     *-------------------------------------------------------------------*/
-    if (InterruptPeriodMilliSec < MILLISEC_PER_SEC)  {
-        seconds = 0L;
-        microSeconds = InterruptPeriodMilliSec * MICROSEC_PER_MILLISEC;
-    }
-    else {
-        seconds = InterruptPeriodMilliSec / MILLISEC_PER_SEC;
-        microSeconds =
-            (InterruptPeriodMilliSec - (seconds * MILLISEC_PER_SEC)) *
-            MICROSEC_PER_MILLISEC;
-    }
-
-    /* Initialize the interrupt period structure. */
-    pITimer->it_value.tv_sec     = seconds;
-    pITimer->it_value.tv_usec    = microSeconds;
-
-    if(action == ONESHOT)
-    {
-        /* This will (should) prevent the timer from restarting itself */
-        pITimer->it_interval.tv_sec  = 0;
-        pITimer->it_interval.tv_usec = 0;
-    }else
-    {
-        pITimer->it_interval.tv_sec  = seconds;
-        pITimer->it_interval.tv_usec = microSeconds;
-
-    }
-
-    return;
-}
-
-
-/***********************************************************************
- *                             HandleCmdLineArgs
- *  This function handles the command line arguments.
- *  output: stack size
- ***********************************************************************/
-void HandleCmdLineArgs(
-    int argc,                       /* number of command-line arguments */
-    char *argv[])                   /* ptrs to command-line arguments   */
-{
-    int argNum;                     /* argument number                  */
-
-    if (argc > (int) 1) {
-
-        for (argNum = (int) 1; argNum < argc; argNum++) {
-
-            /* The command line contains an argument. */
-
-            if ((strcmp(argv[argNum],"--version") == STRINGS_EQUAL) ||
-                (strcmp(argv[argNum],"-v")        == STRINGS_EQUAL)) {
-                /* Print version information and exit. */
-                PrintVersionInfo();
-                exit(0);
-            }
-
-            else if ((strcmp(argv[argNum],"--help") == STRINGS_EQUAL) ||
-                     (strcmp(argv[argNum],"-h")     == STRINGS_EQUAL) ||
-                     (strcmp(argv[argNum],"-?")     == STRINGS_EQUAL)) {
-                /* Print help information and exit. */
-                PrintHelpInfo();
-                exit(0);
-            }
-
-            else if ((strcmp(argv[argNum],"--file") == STRINGS_EQUAL) ||
-                     (strcmp(argv[argNum],"-f")     == STRINGS_EQUAL)) {
-                /* Set the name of the output file. */
-                ++argNum;
-                if (argNum < argc) {
-                    SetFileName(argv[argNum]);
-                }
-                else {
-                    printf("*** Output file name not specified. ***\n");
-                    printf("Default output file name will be used.\n");
-                }
-            }
-
-            else if ((strcmp(argv[argNum],"--time") == STRINGS_EQUAL) ||
-                     (strcmp(argv[argNum],"-t")     == STRINGS_EQUAL)) {
-                /* Set the interrupt period. */
-                ++argNum;
-                if (argNum < argc) {
-                    SetInterruptPeriod(argv[argNum]);
-                }
-                else {
-                    printf("*** Interrupt period not specified. ***\n");
-                    printf("Default interrupt period will be used.\n");
-                }
-
-            }
-
-            else if ((strcmp(argv[argNum],"--priority") ==
-                      STRINGS_EQUAL) ||
-                     (strcmp(argv[argNum],"-p")       == STRINGS_EQUAL)) {
-                /* Set the scheduler priority. */
-                ++argNum;
-                if (argNum < argc) {
-                    SetSchedulerPriority(argv[argNum]);
-                }
-                else {
-                    printf("*** Scheduler priority not specified. ***\n");
-                    printf("Default scheduler priority will be used.\n");
-                }
-
-            }
-
-            else if ((strcmp(argv[argNum],"--readfile") ==
-                      STRINGS_EQUAL) ||
-                     (strcmp(argv[argNum],"-r")       == STRINGS_EQUAL)) {
-                /* Set the file to read*/
-                ++argNum;
-
-                strncpy(ReadFile, argv[argNum], sizeof(ReadFile));
-                DoRead = TRUE;
-            }
-
-            else if ((strcmp(argv[argNum],"--write_bytes") ==
-                      STRINGS_EQUAL) ||
-                     (strcmp(argv[argNum],"-w")       == STRINGS_EQUAL)) {
-                /* Set the file to read*/
-                ++argNum;
-
-                WriteBytes = atoi(argv[argNum]);
-
-                if(WriteBytes < MIN_WRITE_BYTES)
-                {
-                    printf("Writing less than %i bytes is not allowed. Bye.\n",
-                           MIN_WRITE_BYTES);
-                    exit(0);
-                }
-
-
-            }
-
-            else if ((strcmp(argv[argNum],"--consolefile") ==
-                      STRINGS_EQUAL) ||
-                     (strcmp(argv[argNum],"-c")       == STRINGS_EQUAL)) {
-	      /* Set the file to log console log on. */
-	      ++argNum;
-
-	      strncpy(LogFile, argv[argNum], sizeof(LogFile));
-            }
-
-            else if ((strcmp(argv[argNum],"--grab_kprofile") ==
-                      STRINGS_EQUAL))
-	      {
-                /* We will read the /proc/profile file on configurable timeout */
-                GrabKProfile = TRUE;
-
-                ++argNum;
-
-                /* If the jittter is > this #, then the profile is grabbed. */
-                ProfileTriggerMSecs = (long) atoi(argv[argNum]);
-
-		if(ProfileTriggerMSecs <= 0){
-
-		  printf("Illegal value for profile trigger threshold.\n");
-		  exit(0);
-		}
-	      }
-
-            else if ((strcmp(argv[argNum],"--siggc") ==
-                      STRINGS_EQUAL))
-	      {
-                /* We will SIGSTOP/SIGCONT the specified pid */
-                SignalGCTask = TRUE;
-
-                ++argNum;
-
-                GCTaskPID = atoi(argv[argNum]);
-
-		if(ProfileTriggerMSecs <= 0){
-
-		  printf("Illegal value for JFFS(2) GC task pid.\n");
-		  exit(0);
-		}
-	      }
-
-
-            else {
-	      /* Unknown argument. Print help information and exit. */
-	      printf("Invalid option %s\n", argv[argNum]);
-	      printf("Try 'JitterTest --help' for more information.\n");
-	      exit(0);
-            }
-        }
-    }
-
-    return;
-}
-
-
-/***********************************************************************
- *                                SetFileName
- *  This function sets the output file name.
- *  output: N/A
- ***********************************************************************/
-void SetFileName(
-    char * pFileName)               /* ptr to desired output file name  */
-{
-    size_t fileNameLen;             /* file name length (bytes)         */
-
-    /* Check file name length. */
-    fileNameLen = strlen(pFileName);
-    if (fileNameLen > (size_t) MAX_FILE_NAME_LEN) {
-        printf("File name %s exceeds maximum length %d.\n",
-               pFileName, MAX_FILE_NAME_LEN);
-        exit(0);
-    }
-
-    /* File name length is OK so save the file name. */
-    strcpy(OutFileName, pFileName);
-
-    return;
-}
-
-
-/***********************************************************************
- *                             SetInterruptPeriod
- *  This function sets the interrupt period.
- *  output: N/A
- ***********************************************************************/
-void SetInterruptPeriod(
-    char *                          /* ptr to desired interrupt period  */
-    pASCIIInterruptPeriodMilliSec)
-{
-    long period;                    /* interrupt period                 */
-
-    period = atol(pASCIIInterruptPeriodMilliSec);
-    if ((period < MIN_INT_PERIOD_MILLISEC) ||
-        (period > MAX_INT_PERIOD_MILLISEC)) {
-        printf("Invalid interrupt period: %ld ms.\n", period);
-        exit(EXIT_INV_INT_PERIOD);
-    }
-    else {
-        InterruptPeriodMilliSec = period;
-    }
-    return;
-}
-
-
-/***********************************************************************
- *                            SetSchedulerPriority
- *  This function sets the desired scheduler priority.
- *  output: N/A
- ***********************************************************************/
-void SetSchedulerPriority(
-    char * pASCIISchedulerPriority) /* ptr to desired scheduler priority*/
-{
-    int priority;                   /* desired scheduler priority value */
-
-    priority = atoi(pASCIISchedulerPriority);
-    if ((priority < MinPriority) ||
-        (priority > MaxPriority)) {
-        printf("Scheduler priority %d outside of range [%d, %d]\n",
-               priority, MinPriority, MaxPriority);
-        exit(EXIT_INV_SCHED_PRIORITY);
-    }
-    else {
-        RequestedPriority = priority;
-	RunAsRTTask = TRUE; /* We shall run as a POSIX real time task */
-    }
-    return;
-}
-
-
-/***********************************************************************
- *                              PrintVersionInfo
- *  This function prints version information.
- *  output: N/A
- ***********************************************************************/
-void PrintVersionInfo(void)
-{
-    printf("JitterTest version %s\n", Version);
-    printf("Copyright (c) 2001, Daniel Industries, Inc.\n");
-    return;
-}
-
-
-/***********************************************************************
- *                               PrintHelpInfo
- *  This function prints help information.
- *  output: N/A
- ***********************************************************************/
-void PrintHelpInfo(void)
-{
-    printf("Usage: JitterTest [options]\n");
-    printf("       *** Requires root privileges. ***\n");
-    printf("Option:\n");
-    printf("  [-h, --help, -?]           Print this message and exit.\n");
-    printf("  [-v, --version]            ");
-    printf(         "Print the version number of JitterTest and exit.\n");
-    printf("  [-f FILE, --file FILE]     Set output file name to FILE. Typically you would put this on the fs under test\n");
-    printf("  [-c FILE, --consolefile]   Set device or file to write the console log to.\n\tTypically you would set this to /dev/console and save it on another computer.\n");
-    printf("  [-w BYTES, --write_bytes BYTES  Write BYTES to FILE each period.\n");
-    printf("  [-r FILE, --readfile FILE]     Also read 1 byte every cycle from FILE. FILE will be created and filled with data.\n");
-    printf("  [-t <n>, --time <n>]       ");
-    printf(         "Set interrupt period to <n> milliseconds.\n");
-    printf("                           ");
-    printf(         "Range: [%ld, %ld] milliseconds.\n",
-                    MIN_INT_PERIOD_MILLISEC, MAX_INT_PERIOD_MILLISEC);
-    printf("  [-p <n>, --priority <n>]  ");
-    printf(         "Set scheduler priority to <n>.\n");
-    printf("                           ");
-    printf(         "Range: [%d, %d] (higher number = higher priority)\n",
-                    MinPriority, MaxPriority);
-    printf("  [--grab_kprofile <THRESHOLD in ms>]    Read the /proc/profile if jitter is > THRESHOLD and store in file.\n");
-    printf("  [--siggc <PID>]   Before writing to fs send SIGSTOP to PID. After write send SIGCONT\n");
-    return;
-
-}
-
-
-/* A common write that checks for write errors and exits. Pass it __LINE__ for lineNo */
-int Write(int fd, void *buf, size_t bytes, int lineNo)
-{
-
-    int err;
-
-    err = write(fd, buf, bytes);
-
-    if(err < bytes)
-    {
-
-        printf("Write Error at line %i! Wanted to write %i bytes, but wrote only %i bytes.\n",
-               lineNo, bytes, err);
-        perror("Write did not complete. Error. Bye:"); /* show error from errno. */
-	exit(1);
-
-    }
-
-    return err;
-
-}/* end Write*/