(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:tracing)
          op: Equal
          rhs: {(/sys/kernel/debug/tracing)}
          spids: [124]
        )
      ]
      spids: [124]
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:opt_duration) op:Equal rhs:{(0)} spids:[127])]
          spids: [127]
        )
      terminator: <Op_Semi ';'>
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:duration) op:Equal rhs:{(EmptyPart)} spids:[131])]
          spids: [131]
        )
      terminator: <Op_Semi ';'>
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:opt_interval) op:Equal rhs:{(0)} spids:[134])]
          spids: [134]
        )
      terminator: <Op_Semi ';'>
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:interval) op:Equal rhs:{(999999)} spids:[138])]
          spids: [138]
        )
      terminator: <Op_Semi ';'>
    )
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:opt_timestamp) op:Equal rhs:{(0)} spids:[142])]
      spids: [142]
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:opt_tail) op:Equal rhs:{(0)} spids:[145])]
          spids: [145]
        )
      terminator: <Op_Semi ';'>
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:tcmd) op:Equal rhs:{(cat)} spids:[149])]
          spids: [149]
        )
      terminator: <Op_Semi ';'>
    )
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:ttext) op:Equal rhs:{(EmptyPart)} spids:[153])]
      spids: [153]
    )
    (C {(trap)} {(SQ <'quit=1'>)} {(INT)} {(QUIT)} {(TERM)} {(PIPE)} {(HUP)})
    (FuncDef
      name: usage
      body: 
        (BraceGroup
          children: [
            (SimpleCommand
              words: [{(cat)}]
              redirects: [
                (HereDoc
                  op_id: Redir_DLessDash
                  fd: 16777215
                  body: 
                    {
                      (DQ ('USAGE: funccount [-hT] [-i secs] [-d secs] [-t top] funcstring\n') 
                        ('                 -d seconds      # total duration of trace\n') ('                 -h              # this usage message\n') 
                        ('                 -i seconds      # interval summary\n') ('                 -t top          # show top num entries only\n') 
                        ('                 -T              # include timestamp (for -i)\n') ('  eg,\n') ("       funccount 'vfs*'          # trace all funcs that match ") (Right_DoubleQuote '"') 
                        ('vfs*') (Right_DoubleQuote '"') ('\n') ("       funccount -d 5 'tcp*'     # trace ") (Right_DoubleQuote '"') 
                        ('tcp*') (Right_DoubleQuote '"') (' funcs for 5 seconds\n') ("       funccount -t 10 'ext3*'   # show top 10 ") 
                        (Right_DoubleQuote '"') ('ext3*') (Right_DoubleQuote '"') (' funcs\n') 
                        ("       funccount -i 1 'ext3*'    # summary every 1 second\n") ("       funccount -i 1 -d 5 'ext3*' # 5 x 1 second summaries\n") ('\n') 
                        ('See the man page and example file for more info.\n')
                      )
                    }
                  do_expansion: True
                  here_end: END
                  was_filled: T
                  spids: [184]
                )
                (Redir op_id:Redir_GreatAnd fd:16777215 arg_word:{(2)} spids:[187])
              ]
            )
            (ControlFlow token:<ControlFlow_Exit exit>)
          ]
          spids: [179]
        )
      spids: [175 178]
    )
    (FuncDef
      name: warn
      body: 
        (BraceGroup
          children: [
            (If
              arms: [
                (if_arm
                  cond: [
                    (Sentence
                      child: (Pipeline children:[(C {(eval)} {(DQ ($ VSub_At '$@'))})] negated:T)
                      terminator: <Op_Semi ';'>
                    )
                  ]
                  action: [
                    (SimpleCommand
                      words: [
                        {(echo)}
                        {
                          (DQ ('WARNING: command failed ') 
                            (EscapedLiteralPart
                              token: <Lit_EscapedChar '\\"'>
                            ) ($ VSub_At '$@') (EscapedLiteralPart token:<Lit_EscapedChar '\\"'>)
                          )
                        }
                      ]
                      redirects: [(Redir op_id:Redir_GreatAnd fd:16777215 arg_word:{(2)} spids:[246])]
                    )
                  ]
                  spids: [16777215 241]
                )
              ]
              spids: [16777215 257]
            )
          ]
          spids: [227]
        )
      spids: [223 226]
    )
    (FuncDef
      name: die
      body: 
        (BraceGroup
          children: [
            (SimpleCommand
              words: [{(echo)} {(DQ ($ VSub_At '$@'))}]
              redirects: [(Redir op_id:Redir_GreatAnd fd:16777215 arg_word:{(2)} spids:[271])]
            )
            (ControlFlow token:<ControlFlow_Exit exit> arg_word:{(1)})
          ]
          spids: [266]
        )
      spids: [262 265]
    )
    (While
      cond: [(C {(getopts)} {(d) (Lit_Other ':') (hi) (Lit_Other ':') (t) (Lit_Other ':') (T)} {(opt)})]
      body: 
        (DoGroup
          children: [
            (Case
              to_match: {($ VSub_Name '$opt')}
              arms: [
                (case_arm
                  pat_list: [{(d)}]
                  action: [
                    (Sentence
                      child: 
                        (Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (LhsName name:opt_duration)
                              op: Equal
                              rhs: {(1)}
                              spids: [316]
                            )
                          ]
                          spids: [316]
                        )
                      terminator: <Op_Semi ';'>
                    )
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:duration)
                          op: Equal
                          rhs: {($ VSub_Name '$OPTARG')}
                          spids: [320]
                        )
                      ]
                      spids: [320]
                    )
                  ]
                  spids: [313 314 323 16777215]
                )
                (case_arm
                  pat_list: [{(i)}]
                  action: [
                    (Sentence
                      child: 
                        (Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (LhsName name:opt_interval)
                              op: Equal
                              rhs: {(1)}
                              spids: [329]
                            )
                          ]
                          spids: [329]
                        )
                      terminator: <Op_Semi ';'>
                    )
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:interval)
                          op: Equal
                          rhs: {($ VSub_Name '$OPTARG')}
                          spids: [333]
                        )
                      ]
                      spids: [333]
                    )
                  ]
                  spids: [326 327 336 16777215]
                )
                (case_arm
                  pat_list: [{(t)}]
                  action: [
                    (Sentence
                      child: 
                        (Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (LhsName name:opt_tail)
                              op: Equal
                              rhs: {(1)}
                              spids: [342]
                            )
                          ]
                          spids: [342]
                        )
                      terminator: <Op_Semi ';'>
                    )
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:tnum)
                          op: Equal
                          rhs: {($ VSub_Name '$OPTARG')}
                          spids: [346]
                        )
                      ]
                      spids: [346]
                    )
                  ]
                  spids: [339 340 349 16777215]
                )
                (case_arm
                  pat_list: [{(T)}]
                  action: [
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:opt_timestamp)
                          op: Equal
                          rhs: {(1)}
                          spids: [355]
                        )
                      ]
                      spids: [355]
                    )
                  ]
                  spids: [352 353 358 16777215]
                )
                (case_arm
                  pat_list: [{(h)} {(Lit_Other '?')}]
                  action: [(C {(usage)})]
                  spids: [361 364 368 16777215]
                )
              ]
              spids: [306 310 371]
            )
          ]
          spids: [303 373]
        )
    )
    (C {(shift)} 
      {
        (ArithSubPart
          anode: 
            (ArithBinary
              op_id: Arith_Minus
              left: (ArithWord w:{($ VSub_Name '$OPTIND')})
              right: (ArithWord w:{(Lit_Digits 1)})
            )
          spids: [377 386]
        )
      }
    )
    (AndOr
      ops: [Op_DAmp]
      children: [
        (DParen
          child: 
            (ArithBinary
              op_id: Arith_DEqual
              left: (ArithWord w:{($ VSub_Pound '$#')})
              right: (ArithWord w:{(Lit_Digits 0)})
            )
        )
        (C {(usage)})
      ]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:funcs)
          op: Equal
          rhs: {(DQ ($ VSub_Number '$1'))}
          spids: [407]
        )
      ]
      spids: [407]
    )
    (If
      arms: [
        (if_arm
          cond: [(Sentence child:(DParen child:(ArithVarRef name:opt_tail)) terminator:<Op_Semi ';'>)]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:tcmd)
                  op: Equal
                  rhs: {(DQ ('tail -') ($ VSub_Name '$tnum'))}
                  spids: [425]
                )
              ]
              spids: [425]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:ttext)
                  op: Equal
                  rhs: {(DQ (' Top ') ($ VSub_Name '$tnum') (' only.'))}
                  spids: [432]
                )
              ]
              spids: [432]
            )
          ]
          spids: [16777215 422]
        )
      ]
      spids: [16777215 439]
    )
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: (DParen child:(ArithVarRef name:opt_duration))
              terminator: <Op_Semi ';'>
            )
          ]
          action: [
            (C {(echo)} 
              {
                (DQ ('Tracing ') (EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) 
                  ($ VSub_Name '$funcs') (EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) (' for ') ($ VSub_Name '$duration') (' seconds.') 
                  ($ VSub_Name '$ttext') (..)
                )
              }
            )
          ]
          spids: [16777215 451]
        )
      ]
      else_action: [
        (C {(echo)} 
          {
            (DQ ('Tracing ') (EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) ($ VSub_Name '$funcs') 
              (EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) (.) ($ VSub_Name '$ttext') ('.. Ctrl-C to end.')
            )
          }
        )
      ]
      spids: [468 483]
    )
    (AndOr
      ops: [Op_DAmp]
      children: [
        (DParen
          child: 
            (ArithBinary
              op_id: Arith_DAmp
              left: (ArithVarRef name:opt_duration)
              right: (ArithUnary op_id:Arith_Bang child:(ArithVarRef name:opt_interval))
            )
        )
        (Assignment
          keyword: Assign_None
          pairs: [
            (assign_pair
              lhs: (LhsName name:interval)
              op: Equal
              rhs: {($ VSub_Name '$duration')}
              spids: [499]
            )
          ]
          spids: [499]
        )
      ]
    )
    (AndOr
      ops: [Op_DPipe]
      children: [
        (C {(cd)} {($ VSub_Name '$tracing')})
        (C {(die)} 
          {
            (DQ ('ERROR: accessing tracing. Root user? Kernel has FTRACE?\n') 
              ('    debugfs mounted? (mount -t debugfs debugfs /sys/kernel/debug)')
            )
          }
        )
      ]
    )
    (C {(sysctl)} {(-q)} {(kernel.ftrace_enabled) (Lit_Other '=') (1)})
    (AndOr
      ops: [Op_DPipe]
      children: [
        (SimpleCommand
          words: [{(echo)} {(DQ ($ VSub_Name '$funcs'))}]
          redirects: [
            (Redir
              op_id: Redir_Great
              fd: 16777215
              arg_word: {(set_ftrace_filter)}
              spids: [540]
            )
          ]
        )
        (C {(die)} 
          {
            (DQ ('ERROR: enabling ') (EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) 
              ($ VSub_Name '$funcs') (EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) ('. Exiting.')
            )
          }
        )
      ]
    )
    (C {(warn)} {(DQ ('echo nop > current_tracer'))})
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: 
                (Pipeline
                  children: [
                    (SimpleCommand
                      words: [{(echo)} {(1)}]
                      redirects: [
                        (Redir
                          op_id: Redir_Great
                          fd: 16777215
                          arg_word: {(function_profile_enabled)}
                          spids: [570]
                        )
                      ]
                    )
                  ]
                  negated: T
                )
              terminator: <Op_Semi ';'>
            )
          ]
          action: [
            (SimpleCommand
              words: [{(echo)}]
              redirects: [
                (Redir
                  op_id: Redir_Great
                  fd: 16777215
                  arg_word: {(set_ftrace_filter)}
                  spids: [580]
                )
              ]
            )
            (C {(die)} {(DQ ('ERROR: enabling function profiling.'))} 
              {(DQ ('Have CONFIG_FUNCTION_PROFILER? Exiting.'))}
            )
          ]
          spids: [16777215 575]
        )
      ]
      spids: [16777215 596]
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:quit) op:Equal rhs:{(0)} spids:[602])]
          spids: [602]
        )
      terminator: <Op_Semi ';'>
    )
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:secs) op:Equal rhs:{(0)} spids:[606])]
      spids: [606]
    )
    (While
      cond: [
        (Sentence
          child: 
            (DParen
              child: 
                (ArithBinary
                  op_id: Arith_DAmp
                  left: (ArithUnary op_id:Arith_Bang child:(ArithVarRef name:quit))
                  right: 
                    (ArithBinary
                      op_id: Arith_DPipe
                      left: (ArithUnary op_id:Arith_Bang child:(ArithVarRef name:opt_duration))
                      right: 
                        (ArithBinary
                          op_id: Arith_Less
                          left: (ArithVarRef name:secs)
                          right: (ArithVarRef name:duration)
                        )
                    )
                )
            )
          terminator: <Op_Semi ';'>
        )
      ]
      body: 
        (DoGroup
          children: [
            (DParen
              child: 
                (BinaryAssign
                  op_id: Arith_PlusEqual
                  left: (LhsName name:secs)
                  right: (ArithVarRef name:interval)
                )
            )
            (SimpleCommand
              words: [{(echo)} {(0)}]
              redirects: [
                (Redir
                  op_id: Redir_Great
                  fd: 16777215
                  arg_word: {(function_profile_enabled)}
                  spids: [654]
                )
              ]
            )
            (SimpleCommand
              words: [{(echo)} {(1)}]
              redirects: [
                (Redir
                  op_id: Redir_Great
                  fd: 16777215
                  arg_word: {(function_profile_enabled)}
                  spids: [663]
                )
              ]
            )
            (C {(sleep)} {($ VSub_Name '$interval')})
            (C {(echo)})
            (AndOr
              ops: [Op_DAmp]
              children: [(DParen child:(ArithVarRef name:opt_timestamp)) (C {(date)})]
            )
            (C {(printf)} {(DQ ('%-30s %8s') (Lit_Other '\\') (n))} {(DQ (FUNC))} {(DQ (COUNT))})
            (Pipeline
              children: [
                (C {(cat)} {(trace_stat/function) (Lit_Other '*')})
                (C {(awk)} 
                  {
                    (SQ <'\n'> <'\t# skip headers by matching on the numeric hit column\n'> 
                      <'\t$2 ~ /[0-9]/ { a[$1] += $2 }\n'> <'\tEND {\n'> <'\t\tfor (k in a) {\n'> <'\t\t\tprintf "%-30s %8d\\n", k,  a[k]\n'> <'\t\t}\n'> <'\t}'>
                    )
                  }
                )
                (C {(sort)} {(-n)} {(-k2)})
                (C {($ VSub_Name '$tcmd')})
              ]
              negated: F
            )
          ]
          spids: [635 739]
        )
    )
    (SimpleCommand
      words: [{(echo)}]
      redirects: [(Redir op_id:Redir_Great fd:2 arg_word:{(/dev/null)} spids:[747])]
    )
    (SimpleCommand
      words: [{(echo)} {(DQ ('Ending tracing...'))}]
      redirects: [(Redir op_id:Redir_Great fd:2 arg_word:{(/dev/null)} spids:[756])]
    )
    (C {(warn)} {(DQ ('echo 0 > function_profile_enabled'))})
    (C {(warn)} {(DQ ('echo > set_ftrace_filter'))})
  ]
)