idle task stack

Hi I use Sysbios 6.41.00.26 and Tiva tm4c1231h6pge.

Whit ROV I can see that idle task has its own stack:

This idle task is 2048 bytes and after a normal usage of the firmware only 384 bytes are used.

I wonder how to reduce the idle task allocation.

my cfg fil is:

var Defaults = xdc.useModule('xdc.runtime.Defaults');
var Diags = xdc.useModule('xdc.runtime.Diags');
var Error = xdc.useModule('xdc.runtime.Error');
var Log = xdc.useModule('xdc.runtime.Log');
var LoggerBuf = xdc.useModule('xdc.runtime.LoggerBuf');
var Main = xdc.useModule('xdc.runtime.Main');
var Memory = xdc.useModule('xdc.runtime.Memory')
var Sys = xdc.useModule('xdc.runtime.SysMin');
var System = xdc.useModule('xdc.runtime.System');
var Text = xdc.useModule('xdc.runtime.Text');

var BIOS = xdc.useModule('ti.sysbios.BIOS');
var Hwi = xdc.useModule('ti.sysbios.hal.Hwi');
var Semaphore = xdc.useModule('ti.sysbios.knl.Semaphore');
var HeapMem = xdc.useModule('ti.sysbios.heaps.HeapMem');
var Clock = xdc.useModule('ti.sysbios.knl.Clock');
var Task = xdc.useModule('ti.sysbios.knl.Task');
var TIRTOS = xdc.useModule('ti.tirtos.TIRTOS');
TIRTOS.libType = TIRTOS.LibType_NonInstrumented; 
TIRTOS.useUART = true
TIRTOS.useI2C = true
TIRTOS.useWatchdog = true

var m3Hwi = xdc.useModule('ti.sysbios.family.arm.m3.Hwi');
m3Hwi.resetVectorAddress = 0x2000;  // New address

/* 
 * Program.argSize sets the size of the .args section. 
 * The examples don't use command line args so argSize is set to 0.
 */
Program.argSize = 0x0;

/*
 * Uncomment this line to globally disable Asserts.
 * All modules inherit the default from the 'Defaults' module.  You
 * can override these defaults on a per-module basis using Module.common$. 
 * Disabling Asserts will save code space and improve runtime performance.
Defaults.common$.diags_ASSERT = Diags.ALWAYS_OFF;
 */

/*
 * Uncomment this line to keep module names from being loaded on the target.
 * The module name strings are placed in the .const section. Setting this
 * parameter to false will save space in the .const section.  Error and
 * Assert messages will contain an "unknown module" prefix instead
 * of the actual module name.
Defaults.common$.namedModule = false;
 */

/*
 * Minimize exit handler array in System.  The System module includes
 * an array of functions that are registered with System_atexit() to be
 * called by System_exit().
 */
System.maxAtexitHandlers = 4;       

/* 
 * Uncomment this line to disable the Error print function.  
 * We lose error information when this is disabled since the errors are
 * not printed.  Disabling the raiseHook will save some code space if
 * your app is not using System_printf() since the Error_print() function
 * calls System_printf().
Error.raiseHook = null;
 */

/* 
 * Uncomment this line to keep Error, Assert, and Log strings from being
 * loaded on the target.  These strings are placed in the .const section.
 * Setting this parameter to false will save space in the .const section.
 * Error, Assert and Log message will print raw ids and args instead of
 * a formatted message.
Text.isLoaded = false;
 */

/*
 * Uncomment this line to disable the output of characters by SysMin
 * when the program exits.  SysMin writes characters to a circular buffer.
 * This buffer can be viewed using the SysMin Output view in ROV.
SysMin.flushAtExit = false;
 */

/* 
 * The BIOS module will create the default heap for the system.
 * Specify the size of this default heap.
 */
/* create a default heap */
var HeapMem = xdc.useModule('ti.sysbios.heaps.HeapMem');
var heapMemParams = new HeapMem.Params();
heapMemParams.size = 0x3800;
var Memory = xdc.useModule('xdc.runtime.Memory');
Memory.defaultHeapInstance = HeapMem.create(heapMemParams);


/* System stack size (used by ISRs and Swis) */
Program.stack = 0x0C00;


/* 
 * Create and install logger for the whole system
 */
var loggerBufParams = new LoggerBuf.Params();
loggerBufParams.numEntries = 32;
var logger0 = LoggerBuf.create(loggerBufParams);
Defaults.common$.logger = logger0;
Main.common$.diags_INFO = Diags.ALWAYS_ON;

System.SupportProxy = Sys;

var Boot = xdc.useModule('ti.catalog.arm.cortexm4.tiva.ce.Boot');
Boot.enhancedClockMode = false;
Boot.configureClock = false;
Boot.configureLdo = false;
Boot.pllBypass = true;
Reset = xdc.useModule('xdc.runtime.Reset');
Reset.fxns[Reset.fxns.length++] = '&myResetFxn';

BIOS.cpuFreq.lo = 24576000;

// Tell the Clock module that YOU are providing the periodic interrupt
Clock.tickSource = Clock.TickSource_USER;

// this example uses the ti.sysbios.timers.dmtimer.Timer module
var Timer = xdc.useModule('ti.sysbios.family.arm.m3.Timer');

// create a dmtimer config parameter object
var timerParams = new Timer.Params();

// make sure you set the period to 1000 us (1ms)
timerParams.period = 1000;

// custom dmtimer config parameters here...
//timerParams.twer.ovf_wup_ena = 1;

// Create the timer.
// This example uses timer id 3.
// The timer interrupt handler must be set to 'Clock.tick'. 
Timer.create(0, Clock.doTick, timerParams);


var Idle = xdc.useModule('ti.sysbios.knl.Idle');
Idle.addFunc('&wdt_Man_idleFcnt'); // add wdt_Man_idleFcnt() 

best regards

Max