diff --git a/guider/guider.py b/guider/guider.py
index 071b9bbf..16756557 100755
--- a/guider/guider.py
+++ b/guider/guider.py
@@ -7,7 +7,7 @@
 __credits__ = "Peace Lee"
 __license__ = "GPLv2"
 __version__ = "3.9.8"
-__revision__ = "241205"
+__revision__ = "241206"
 __maintainer__ = "Peace Lee"
 __email__ = "iipeace5@gmail.com"
 __repository__ = "https://github.com/iipeace/guider"
@@ -30576,6 +30576,8 @@ def execTopCmd():
             # set handler for exit #
             SysMgr.setNormalSignal()
 
+        # -------------------- execute command -------------------- #
+
         # thread #
         if SysMgr.checkMode("ttop"):
             SysMgr.processEnable = False
@@ -30816,7 +30818,7 @@ def execTopCmd():
             SysMgr.dltTopEnable = True
             SysMgr.dltTimeEnable = True
 
-        # ANDTOP #
+        # logcat #
         elif SysMgr.checkMode("andtop"):
             SysMgr.andTopEnable = True
 
@@ -30847,12 +30849,12 @@ def execTopCmd():
 
         # kernelcall #
         elif SysMgr.checkMode("ktop"):
-            SysMgr.doTrace("kernel")
-
-        # kernelfunctioncall #
-        elif SysMgr.checkMode("kftop"):
             SysMgr.runKernelTop()
 
+        # kernel stack #
+        elif SysMgr.checkMode("kstop"):
+            SysMgr.doTrace("kernel")
+
         # network #
         elif SysMgr.checkMode("ntop"):
             SysMgr.networkEnable = True
@@ -38391,7 +38393,7 @@ def getCmdList():
                 "fetop": ("File", "Linux/Android"),
                 "ftop": ("File", "Linux/Android/MacOS"),
                 "irqtop": ("IRQ", "Linux/Android"),
-                "kftop": ("Function", "Linux/Android"),
+                "kstop": ("Stack", "Linux/Android"),
                 "ktop": ("Function", "Linux/Android"),
                 "mdtop": ("Memory", "Android"),
                 "mtop": ("Memory", "Linux/Android"),
@@ -40869,6 +40871,7 @@ def _getDesc(s, t=0):
 
     - {2:1} including specific kernel functions of all threads to guider.dat
         # {0:1} {1:1} -s . -d c -K "evt1:func*"
+        # {0:1} {1:1} -s . -d c -K "evt1:func*" -q "INCDOTSYM"
         # {0:1} {1:1} -s . -d c -K "evt1:func1:u32, evt2:0x1234:s16, evt3:func2:x16"
         # {0:1} {1:1} -s . -d c -K "open:do_sys_open:dfd=%ax filename=%bx;u64 flags=%cx;s32 mode=+4(\$stack):NONE"
         # {0:1} {1:1} -s . -d c -K "strace32:func1:%bp/u32.%sp/s64, strace:0x1234:\$stack:NONE"
@@ -41148,8 +41151,8 @@ def _getDesc(s, t=0):
                         + examStr
                     )
 
-                # kernel function top #
-                elif SysMgr.checkMode("kftop"):
+                # kernel call top #
+                elif SysMgr.checkMode("ktop"):
                     desc = "Monitor kernel function calls"
                     helpStr = _getDesc(desc, t=1)
 
@@ -41191,9 +41194,9 @@ def _getDesc(s, t=0):
                     )
 
                 # kernel top #
-                elif SysMgr.checkMode("ktop"):
+                elif SysMgr.checkMode("kstop"):
                     helpStr = _getDesc(
-                        "Monitor kernel function calls for specific threads",
+                        "Monitor kernel stacks for specific threads",
                         t=1,
                     )
 
@@ -41221,7 +41224,7 @@ def _getDesc(s, t=0):
                     """.format(
                         cmd,
                         mode,
-                        "Monitor kernel function calls",
+                        "Monitor kernel stacks",
                         "for specific threads",
                         "from the specific binary",
                     )
@@ -41506,6 +41509,7 @@ def _getDesc(s, t=0):
 
     - {2:1} including specific kernel functions
         # {0:1} {1:1} -f -K "evt1:func*::NONE"
+        # {0:1} {1:1} -f -K "evt1:func*::NONE" -q INCDOTSYM
         # {0:1} {1:1} -f -K "evt1:func1:u32:NONE, evt2:0x1234:s16:NONE, evt3:func2:x16:NONE"
         # {0:1} {1:1} -f -K "openfile:getname::NONE, access:0x1234::NONE"
 
@@ -43348,6 +43352,9 @@ def _getDesc(s, t=0):
         # {0:1} {1:1} -g a.out -q ONLYUSER
         # {0:1} {1:1} -g a.out -q ONLYKERNEL
 
+    - {2:1} for specific processes with stacks including thread comm
+        # {0:1} {1:1} -g a.out -q ADDCOMMCALL
+
     - {2:1} with time filter
         # {0:1} {1:1} -a -q TRIM:0:1.3
 
@@ -43616,8 +43623,11 @@ def _getDesc(s, t=0):
 
                     myStr = (
                         """
-    - {2:1} from compressed files
-        # {0:1} {1:1} guider.out.gz -q DECODE
+    - {2:1} from a compressed file
+        # {0:1} {1:1} guider.out.gz
+
+    - {2:1} without decoding
+        # {0:1} {1:1} guider.out.gz -q NODECODE
 
     - {2:1} and save samples to the specific file
         # {0:1} {1:1} guider.out.gz -q SAVESAMPLE
@@ -44465,6 +44475,7 @@ def _getDesc(s, t=0):
 
     - {2:1} including specific kernel functions
         # {0:1} {1:1} -K "evt1:func*"
+        # {0:1} {1:1} -K "evt1:func*" -q INCDOTSYM
         # {0:1} {1:1} -K "evt1:func1:u32, evt2:0x1234:s16, evt3:func2:x16"
         # {0:1} {1:1} -K "open:do_sys_open:dfd=%ax filename=%bx;u64 flags=%cx;s32 mode=+4(\$stack):NONE"
         # {0:1} {1:1} -K "strace32:func1:%bp/u32.%sp/s64, strace:0x1234:\$stack:NONE"
@@ -49580,6 +49591,9 @@ def writeKernelCmd(applyCmd=True, cmdList=[], clear=False):
                     if UtilMgr.isValidStr(sym, [cmd[1]])
                 ]
 
+                if not "INCDOTSYM" in SysMgr.environList:
+                    symList = [sym for sym in symList if not "." in sym]
+
                 for sym in symList:
                     newCmd = list(cmd)
                     if realname:
@@ -51062,7 +51076,7 @@ def _getPacket(fd):
                                 raise Exception()
                             yield packet
                         except GeneratorExit:
-                            return None
+                            return
                         except SystemExit:
                             sys.exit(0)
                         except:
@@ -54296,6 +54310,10 @@ def sendOutput2Nodes(line, force=False):
                 start = end
                 end += udpSeg
 
+    @staticmethod
+    def printStr(string):
+        print(string)
+
     @staticmethod
     def printPipe(
         line="",
@@ -57166,7 +57184,6 @@ def isWritable(value):
     @staticmethod
     def isTopMode():
         if len(sys.argv) > 1 and sys.argv[1] in (
-            "top",
             "andtop",
             "atop",
             "attop",
@@ -57181,7 +57198,7 @@ def isTopMode():
             "fetop",
             "ftop",
             "irqtop",
-            "kftop",
+            "kstop",
             "ktop",
             "mdtop",
             "mtop",
@@ -57192,6 +57209,7 @@ def isTopMode():
             "slabtop",
             "stacktop",
             "systop",
+            "top",
             "tptop",
             "trtop",
             "ttop",
@@ -58030,13 +58048,15 @@ def checkBgTopCond():
             tmpPath = os.path.realpath(".")
 
         # apply output dir #
-        if os.path.isdir(logPath) and os.access(logPath, os.W_OK):
-            SysMgr.outPath = logPath
-        elif os.path.isdir(tmpPath) and os.access(tmpPath, os.W_OK):
-            SysMgr.outPath = tmpPath
-        else:
-            SysMgr.printErr("failed to get path to save output, use -o option")
-            return False
+        for d in (logPath, tmpPath, None):
+            if d is None:
+                SysMgr.printErr(
+                    "failed to get path to save output, use -o option"
+                )
+                return False
+            elif os.path.isdir(d) and os.access(d, os.W_OK):
+                SysMgr.outPath = d
+                break
 
         SysMgr.printInfo("save reporting files to '%s'" % SysMgr.outPath)
         return True
@@ -59536,7 +59556,7 @@ def _printRes(statusDict):
                 if SysMgr.hasEnvironVar(["GETPKGLIST", "GETPROCLIST"]):
                     printFunc = SysMgr.printPipe
                 else:
-                    printFunc = print
+                    printFunc = SysMgr.printStr
                 printFunc(UtilMgr.convDict2Str(statusDict, pretty=False))
 
             SysMgr.addExitFunc(_printRes, [statusDict])
@@ -60704,7 +60724,7 @@ def _getLine(scripts):
                         yield idx, line.rstrip("\n")
                     idx += 1
                 except GeneratorExit:
-                    return idx, None
+                    return
                 except SystemExit:
                     sys.exit(0)
                 except:
@@ -61266,6 +61286,7 @@ def _getSym(call):
         hasStackFilter = targetKernel or exceptKernel
         taskFilter = SysMgr.environList.get("TASKFILTER", [])
         procGroup = "PROCGROUP" in SysMgr.environList
+        addCommCall = "ADDCOMMCALL" in SysMgr.environList
 
         # get time filter #
         try:
@@ -61282,6 +61303,7 @@ def _getSym(call):
             )
 
         # parse lines #
+        comm = None
         current = 0
         totalCnt = 0
         totalSize = 0
@@ -61312,6 +61334,18 @@ def _getSym(call):
                     if not sample:
                         continue
 
+                    # add comm to callchain #
+                    if addCommCall and callchain:
+                        try:
+                            lastcall = callchain[-1]
+                            lastcall[1] = ("<%s>" % comm) + lastcall[1]
+                        except SystemExit:
+                            sys.exit(0)
+                        except:
+                            SysMgr.printWarn(
+                                "failed to add comm to callchain", True, True
+                            )
+
                     # save previous sample #
                     sample["backtrace"] = callchain
 
@@ -68208,7 +68242,7 @@ def _getPage(fd):
                             raise Exception()
                         yield page
                     except GeneratorExit:
-                        return None
+                        return
                     except SystemExit:
                         sys.exit(0)
                     except:
@@ -100044,7 +100078,7 @@ def getCallStatsFile(logFile, verb=False):
 
         # check backtrace stacks #
         onlybt = "ONLYBTSTACK" in SysMgr.environList
-        needDecode = "DECODE" in SysMgr.environList
+        needDecode = False if "NODECODE" in SysMgr.environList else True
 
         for line in fd:
             # check encoding type ##