(command.CommandList children: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:tracing) op: assign_op.Equal rhs: {<'/sys/kernel/debug/tracing'>} spids: [163] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:flock) op: assign_op.Equal rhs: {<'/var/tmp/.ftrace-lock'>} spids: [166] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:bufsize_kb) op: assign_op.Equal rhs: {<4096>} spids: [169] ) ] ) (command.CommandList children: [ (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_duration) op: assign_op.Equal rhs: {<0>} spids: [172] ) ] ) terminator: <Id.Op_Semi _> ) (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:duration) op: assign_op.Equal rhs: (word.Empty) spids: [176] ) ] ) terminator: <Id.Op_Semi _> ) (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_name) op: assign_op.Equal rhs: {<0>} spids: [179] ) ] ) terminator: <Id.Op_Semi _> ) (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:name) op: assign_op.Equal rhs: (word.Empty) spids: [183] ) ] ) terminator: <Id.Op_Semi _> ) (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_pid) op: assign_op.Equal rhs: {<0>} spids: [186] ) ] ) terminator: <Id.Op_Semi _> ) (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:pid) op: assign_op.Equal rhs: (word.Empty) spids: [190] ) ] ) terminator: <Id.Op_Semi _> ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:ftext) op: assign_op.Equal rhs: (word.Empty) spids: [193] ) ] ) ] ) (command.CommandList children: [ (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_start) op: assign_op.Equal rhs: {<0>} spids: [195] ) ] ) terminator: <Id.Op_Semi _> ) (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_end) op: assign_op.Equal rhs: {<0>} spids: [199] ) ] ) terminator: <Id.Op_Semi _> ) (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_device) op: assign_op.Equal rhs: {<0>} spids: [203] ) ] ) terminator: <Id.Op_Semi _> ) (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:device) op: assign_op.Equal rhs: (word.Empty) spids: [207] ) ] ) terminator: <Id.Op_Semi _> ) (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_iotype) op: assign_op.Equal rhs: {<0>} spids: [210] ) ] ) terminator: <Id.Op_Semi _> ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:iotype) op: assign_op.Equal rhs: (word.Empty) spids: [214] ) ] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_queue) op: assign_op.Equal rhs: {<0>} spids: [216] ) ] ) (C {<trap>} {(SQ <':'>)} {<INT>} {<QUIT>} {<TERM>} {<PIPE>} {<HUP>}) (command.ShFunction name: usage body: (BraceGroup children: [ (command.Simple words: [{<cat>}] redirects: [ (redir op: <Id.Redir_DLessDash '<<-'> loc: (redir_loc.Fd fd:0) arg: (redir_param.HereDoc here_begin: {<END>} here_end_span_id: 278 stdin_parts: [ <'USAGE: iosnoop [-hQst] [-d device] [-i iotype] [-p PID] [-n name]\n'> <' [duration]\n'> <' -d device # device string (eg, '> <Id.Right_DoubleQuote '"'> <'202,1)\n'> < ' -i iotype # match type (eg, \'*R*\' for all reads)\n' > <' -n name # process name to match on I/O issue\n'> <' -p PID # PID to match on I/O issue\n'> <' -Q # use queue insert as start time\n'> <' -s # include start time of I/O (s)\n'> <' -t # include completion time of I/O (s)\n'> <' -h # this usage message\n'> <' duration # duration seconds, and use buffers\n'> <' eg,\n'> <' iosnoop # watch block I/O live (unbuffered)\n'> <' iosnoop 1 # trace 1 sec (buffered)\n'> <' iosnoop -Q # include queueing time in LATms\n'> <' iosnoop -ts # include start and end timestamps\n'> <' iosnoop -i \'*R*\' # trace reads\n'> < ' iosnoop -p 91 # show I/O issued when PID 91 is on-CPU\n' > < ' iosnoop -Qp 91 # show I/O queued by PID 91, queue time\n' > <'\n'> <'See the man page and example file for more info.\n'> ] ) ) (redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>}) ] do_fork: T ) (command.ControlFlow token:<Id.ControlFlow_Exit exit>) ] ) ) (command.ShFunction name: warn body: (BraceGroup children: [ (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.Pipeline children: [(C {<eval>} {(DQ ($ Id.VSub_At '$@'))})] negated: T ) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.Simple words: [ {<echo>} { (DQ <'WARNING: command failed '> (word_part.EscapedLiteral token: <Id.Lit_EscapedChar '\\"'> ) ($ Id.VSub_At '$@') (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'>) ) } ] redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})] do_fork: T ) ] spids: [292 303] ) ] ) ] ) ) (command.ShFunction name: end body: (BraceGroup children: [ (command.Simple words: [{<echo>}] redirects: [(redir op:<Id.Redir_Great '2>'> loc:(redir_loc.Fd fd:2) arg:{<'/dev/null'>})] do_fork: T ) (command.Simple words: [{<echo>} {(DQ <'Ending tracing...'>)}] redirects: [(redir op:<Id.Redir_Great '2>'> loc:(redir_loc.Fd fd:2) arg:{<'/dev/null'>})] do_fork: T ) (C {<cd>} {($ Id.VSub_DollarName '$tracing')}) (C {<warn>} {(DQ <'echo 0 > events/block/'> ($ Id.VSub_DollarName '$b_start') <'/enable'>)}) (C {<warn>} {(DQ <'echo 0 > events/block/block_rq_complete/enable'>)}) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DParen child: (arith_expr.Binary op_id: Id.Arith_DPipe left: (arith_expr.Binary op_id: Id.Arith_DPipe left: <Id.Lit_ArithVarLike opt_device> right: <Id.Lit_ArithVarLike opt_iotype> ) right: <Id.Lit_ArithVarLike opt_pid> ) ) terminator: <Id.Op_Semi _> ) ] ) action: [ (C {<warn>} {(DQ <'echo 0 > events/block/'> ($ Id.VSub_DollarName '$b_start') <'/filter'>)} ) (C {<warn>} {(DQ <'echo 0 > events/block/block_rq_complete/filter'>)}) ] spids: [372 390] ) ] ) (C {<warn>} {(DQ <'echo > trace'>)}) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DParen child:<Id.Lit_ArithVarLike wroteflock>) (C {<warn>} {(DQ <'rm '> ($ Id.VSub_DollarName '$flock'))}) ] ) ] ) ) (command.ShFunction name: die body: (BraceGroup children: [ (command.Simple words: [{<echo>} {(DQ ($ Id.VSub_At '$@'))}] redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})] do_fork: T ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] ) ) (command.ShFunction name: edie body: (BraceGroup children: [ (command.Simple words: [{<echo>} {(DQ ($ Id.VSub_At '$@'))}] redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})] do_fork: T ) (command.Simple words: [{<exec>}] redirects: [ (redir op: <Id.Redir_Great '>'> loc: (redir_loc.Fd fd:1) arg: {<'/dev/null'>} ) (redir op:<Id.Redir_GreatAnd '2>&'> loc:(redir_loc.Fd fd:2) arg:{<1>}) ] do_fork: T ) (C {<end>}) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] ) ) (command.WhileUntil keyword: <Id.KW_While while> cond: (condition.Shell commands: [ (C {<getopts>} {<d> <Id.Lit_Colon ':'> <hi> <Id.Lit_Colon ':'> <n> <Id.Lit_Colon ':'> <p> <Id.Lit_Colon ':'> <Qst> } {<opt>} ) ] ) body: (command.DoGroup children: [ (command.Case to_match: {($ Id.VSub_DollarName '$opt')} arms: [ (case_arm pat_list: [{<d>}] action: [ (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_device) op: assign_op.Equal rhs: {<1>} spids: [534] ) ] ) terminator: <Id.Op_Semi _> ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:device) op: assign_op.Equal rhs: {($ Id.VSub_DollarName '$OPTARG')} spids: [538] ) ] ) ] spids: [531 532 541 -1] ) (case_arm pat_list: [{<i>}] action: [ (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_iotype) op: assign_op.Equal rhs: {<1>} spids: [547] ) ] ) terminator: <Id.Op_Semi _> ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:iotype) op: assign_op.Equal rhs: {($ Id.VSub_DollarName '$OPTARG')} spids: [551] ) ] ) ] spids: [544 545 554 -1] ) (case_arm pat_list: [{<n>}] action: [ (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_name) op: assign_op.Equal rhs: {<1>} spids: [560] ) ] ) terminator: <Id.Op_Semi _> ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:name) op: assign_op.Equal rhs: {($ Id.VSub_DollarName '$OPTARG')} spids: [564] ) ] ) ] spids: [557 558 567 -1] ) (case_arm pat_list: [{<p>}] action: [ (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_pid) op: assign_op.Equal rhs: {<1>} spids: [573] ) ] ) terminator: <Id.Op_Semi _> ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:pid) op: assign_op.Equal rhs: {($ Id.VSub_DollarName '$OPTARG')} spids: [577] ) ] ) ] spids: [570 571 580 -1] ) (case_arm pat_list: [{<Q>}] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_queue) op: assign_op.Equal rhs: {<1>} spids: [586] ) ] ) ] spids: [583 584 589 -1] ) (case_arm pat_list: [{<s>}] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_start) op: assign_op.Equal rhs: {<1>} spids: [595] ) ] ) ] spids: [592 593 598 -1] ) (case_arm pat_list: [{<t>}] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_end) op: assign_op.Equal rhs: {<1>} spids: [604] ) ] ) ] spids: [601 602 607 -1] ) (case_arm pat_list: [{<h>} {<Id.Lit_QMark '?'>}] action: [(C {<usage>})] spids: [610 613 617 -1] ) ] ) ] ) ) (C {<shift>} { (word_part.ArithSub anode: (arith_expr.Binary op_id: Id.Arith_Minus left: {($ Id.VSub_DollarName '$OPTIND')} right: {<Id.Lit_Digits 1>} ) ) } ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DParen child:{($ Id.VSub_Pound '$#')}) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_duration) op: assign_op.Equal rhs: {<1>} spids: [650] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:duration) op: assign_op.Equal rhs: {($ Id.VSub_Number '$1')} spids: [654] ) ] ) (C {<shift>}) ] spids: [637 647] ) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DParen child:<Id.Lit_ArithVarLike opt_device>) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:major) op: assign_op.Equal rhs: { (braced_var_sub token: <Id.VSub_Name device> suffix_op: (suffix_op.Unary tok:<Id.VOp1_Percent '%'> arg_word:{<',*'>}) ) } spids: [675] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:minor) op: assign_op.Equal rhs: { (braced_var_sub token: <Id.VSub_Name device> suffix_op: (suffix_op.Unary tok:<Id.VOp1_Pound '#'> arg_word:{<'*,'>}) ) } spids: [683] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:dev) op: assign_op.Equal rhs: { (word_part.ArithSub anode: (arith_expr.Binary op_id: Id.Arith_Plus left: (arith_expr.Binary op_id: Id.Arith_DLess left: <Id.Lit_ArithVarLike major> right: {<Id.Lit_Digits 20>} ) right: <Id.Lit_ArithVarLike minor> ) ) } spids: [691] ) ] ) ] spids: [662 672] ) ] ) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DParen child: (arith_expr.Binary op_id: Id.Arith_DAmp left: <Id.Lit_ArithVarLike opt_pid> right: <Id.Lit_ArithVarLike opt_name> ) ) (C {<die>} {(DQ <'ERROR: use either -p or -n.'>)}) ] ) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DParen child:<Id.Lit_ArithVarLike opt_pid>) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:ftext) op: assign_op.Equal rhs: {(DQ <' issued by PID '> ($ Id.VSub_DollarName '$pid'))} spids: [743] ) ] ) ] ) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DParen child:<Id.Lit_ArithVarLike opt_name>) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:ftext) op: assign_op.Equal rhs: { (DQ <' issued by process name '> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'>) ($ Id.VSub_DollarName '$name') (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'>) ) } spids: [758] ) ] ) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DParen child:<Id.Lit_ArithVarLike opt_duration>) terminator: <Id.Op_Semi _> ) ] ) action: [ (C {<echo>} { (DQ <'Tracing block I/O'> ($ Id.VSub_DollarName '$ftext') <' for '> ($ Id.VSub_DollarName '$duration') <' seconds (buffered)...'> ) } ) ] spids: [766 776] ) ] else_action: [ (C {<echo>} {(DQ <'Tracing block I/O'> ($ Id.VSub_DollarName '$ftext') <'. Ctrl-C to end.'>)}) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DParen child:<Id.Lit_ArithVarLike opt_queue>) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:b_start) op: assign_op.Equal rhs: {<block_rq_insert>} spids: [815] ) ] ) ] spids: [802 812] ) ] else_action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:b_start) op: assign_op.Equal rhs: {<block_rq_issue>} spids: [821] ) ] ) ] ) (command.AndOr ops: [Id.Op_DAmp Id.Op_DPipe] children: [ (command.DParen child:<Id.Lit_ArithVarLike opt_duration>) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:use) op: assign_op.Equal rhs: {<mawk>} spids: [839] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:use) op: assign_op.Equal rhs: {<gawk>} spids: [844] ) ] ) ] ) (command.AndOr ops: [Id.Op_DAmp Id.Op_DPipe] children: [ (command.DBracket expr: (bool_expr.Unary op_id: Id.BoolUnary_x child: {<'/usr/bin/'> ($ Id.VSub_DollarName '$use')} ) ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:awk) op: assign_op.Equal rhs: {($ Id.VSub_DollarName '$use')} spids: [861] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:awk) op: assign_op.Equal rhs: {<awk>} spids: [866] ) ] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:wroteflock) op: assign_op.Equal rhs: {<1>} spids: [869] ) ] ) (command.AndOr ops: [Id.Op_DPipe] children: [ (C {<cd>} {($ Id.VSub_DollarName '$tracing')}) (C {<die>} { (DQ <'ERROR: accessing tracing. Root user? Kernel has FTRACE?\n'> <' debugfs mounted? (mount -t debugfs debugfs /sys/kernel/debug)'> ) } ) ] ) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DBracket expr: (bool_expr.Unary op_id:Id.BoolUnary_e child:{($ Id.VSub_DollarName '$flock')}) ) (C {<die>} { (DQ <'ERROR: ftrace may be in use by PID '> (command_sub left_token: <Id.Left_DollarParen '$('> child: (C {<cat>} {($ Id.VSub_DollarName '$flock')}) ) <' '> ($ Id.VSub_DollarName '$flock') ) } ) ] ) (command.AndOr ops: [Id.Op_DPipe] children: [ (command.Simple words: [{<echo>} {($ Id.VSub_Dollar '$$')}] redirects: [ (redir op: <Id.Redir_Great '>'> loc: (redir_loc.Fd fd:1) arg: {($ Id.VSub_DollarName '$flock')} ) ] do_fork: T ) (C {<die>} {(DQ <'ERROR: unable to write '> ($ Id.VSub_DollarName '$flock') <.>)}) ] ) (command.Simple words: [{<echo>} {<nop>}] redirects: [(redir op:<Id.Redir_Great '>'> loc:(redir_loc.Fd fd:1) arg:{<current_tracer>})] do_fork: T ) (C {<warn>} {(DQ <'echo '> ($ Id.VSub_DollarName '$bufsize_kb') <' > buffer_size_kb'>)}) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:filter) op: assign_op.Equal rhs: (word.Empty) spids: [954] ) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DParen child:<Id.Lit_ArithVarLike opt_iotype>) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:filter) op: assign_op.Equal rhs: { (DQ <'rwbs ~ '> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'>) ($ Id.VSub_DollarName '$iotype') (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'>) ) } spids: [969] ) ] ) ] spids: [956 966] ) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DParen child:<Id.Lit_ArithVarLike opt_device>) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DBracket expr: (bool_expr.Binary op_id: Id.BoolBinary_GlobNEqual left: {(DQ ($ Id.VSub_DollarName '$filter'))} right: {(DQ )} ) ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:filter) op: assign_op.Equal rhs: {(DQ ($ Id.VSub_DollarName '$filter') <' && '>)} spids: [1007] ) ] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:filter) op: assign_op.Equal rhs: {(DQ (${ Id.VSub_Name filter) <'dev == '> ($ Id.VSub_DollarName '$dev'))} spids: [1014] ) ] ) ] spids: [979 989] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:filter_i) op: assign_op.Equal rhs: {($ Id.VSub_DollarName '$filter')} spids: [1025] ) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DParen child:<Id.Lit_ArithVarLike opt_pid>) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DBracket expr: (bool_expr.Binary op_id: Id.BoolBinary_GlobNEqual left: {(DQ ($ Id.VSub_DollarName '$filter_i'))} right: {(DQ )} ) ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:filter_i) op: assign_op.Equal rhs: {(DQ ($ Id.VSub_DollarName '$filter_i') <' && '>)} spids: [1056] ) ] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:filter_i) op: assign_op.Equal rhs: {(DQ (${ Id.VSub_Name filter_i) <'common_pid == '> ($ Id.VSub_DollarName '$pid'))} spids: [1063] ) ] ) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DBracket expr: (bool_expr.Binary op_id: Id.BoolBinary_GlobDEqual left: {(DQ ($ Id.VSub_DollarName '$filter'))} right: {(DQ )} ) ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:filter) op: assign_op.Equal rhs: {<0>} spids: [1088] ) ] ) ] ) ] spids: [1028 1038] ) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DParen child: (arith_expr.Binary op_id: Id.Arith_DPipe left: (arith_expr.Binary op_id: Id.Arith_DPipe left: <Id.Lit_ArithVarLike opt_iotype> right: <Id.Lit_ArithVarLike opt_device> ) right: <Id.Lit_ArithVarLike opt_pid> ) ) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.AndOr ops: [Id.Op_DPipe] children: [ (command.Pipeline children: [ (command.Simple words: [{<echo>} {(DQ ($ Id.VSub_DollarName '$filter_i'))}] redirects: [ (redir op: <Id.Redir_Great '>'> loc: (redir_loc.Fd fd:1) arg: {<'events/block/'> ($ Id.VSub_DollarName '$b_start') <'/filter'> } ) ] do_fork: T ) ] negated: T ) (command.Pipeline children: [ (command.Simple words: [{<echo>} {(DQ ($ Id.VSub_DollarName '$filter'))}] redirects: [ (redir op: <Id.Redir_Great '>'> loc: (redir_loc.Fd fd:1) arg: {<'events/block/block_rq_complete/filter'>} ) ] do_fork: T ) ] negated: T ) ] ) ] ) action: [(C {<edie>} {(DQ <'ERROR: setting -d or -t filter. Exiting.'>)})] spids: [1114 1147] ) ] ) ] spids: [1093 1111] ) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.AndOr ops: [Id.Op_DPipe] children: [ (command.Pipeline children: [ (command.Simple words: [{<echo>} {<1>}] redirects: [ (redir op: <Id.Redir_Great '>'> loc: (redir_loc.Fd fd:1) arg: {<'events/block/'> ($ Id.VSub_DollarName '$b_start') <'/enable'>} ) ] do_fork: T ) ] negated: T ) (command.Pipeline children: [ (command.Simple words: [{<echo>} {<1>}] redirects: [ (redir op: <Id.Redir_Great '>'> loc: (redir_loc.Fd fd:1) arg: {<'events/block/block_rq_complete/enable'>} ) ] do_fork: T ) ] negated: T ) ] ) terminator: <Id.Op_Semi _> ) ] ) action: [(C {<edie>} {(DQ <'ERROR: enabling block I/O tracepoints. Exiting.'>)})] spids: [1161 1190] ) ] ) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DParen child:<Id.Lit_ArithVarLike opt_start>) (C {<printf>} {(DQ <'%-15s '>)} {(DQ <STARTs>)}) ] ) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DParen child:<Id.Lit_ArithVarLike opt_end>) (C {<printf>} {(DQ <'%-15s '>)} {(DQ <ENDs>)}) ] ) (C {<printf>} {(DQ <'%-12.12s %-6s %-4s %-8s %-12s %-6s %8s'> <Id.Lit_BadBackslash '\\'> <n>)} {(DQ <COMM>)} {(DQ <PID>)} {(DQ <TYPE>)} {(DQ <DEV>)} {(DQ <BLOCK>)} {(DQ <BYTES>)} {(DQ <LATms>)} ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:offset) op: assign_op.Equal rhs: { (command_sub left_token: <Id.Left_DollarParen '$('> child: (C {($ Id.VSub_DollarName '$awk')} { (SQ <'BEGIN { o = 0; }\n'> <'\t$1 == "#" && $2 ~ /TASK/ && NF == 6 { o = 1; }\n'> <'\t$2 ~ /TASK/ { print o; exit }'> ) } {<trace>} ) ) } spids: [1299] ) ] ) (C {<warn>} {(DQ <'echo > trace'>)}) (command.Pipeline children: [ (command.Subshell child: (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DParen child:<Id.Lit_ArithVarLike opt_duration>) terminator: <Id.Op_Semi _> ) ] ) action: [(C {<sleep>} {($ Id.VSub_DollarName '$duration')}) (C {<cat>} {<trace>})] spids: [1324 1334] ) ] else_action: [(C {<cat>} {<trace_pipe>})] ) ) (C {($ Id.VSub_DollarName '$awk')} {<-v>} {<Id.Lit_VarLike 'o='> ($ Id.VSub_DollarName '$offset')} {<-v>} {<Id.Lit_VarLike 'opt_name='> ($ Id.VSub_DollarName '$opt_name')} {<-v>} {<Id.Lit_VarLike 'name='> ($ Id.VSub_DollarName '$name')} {<-v>} {<Id.Lit_VarLike 'opt_duration='> ($ Id.VSub_DollarName '$opt_duration')} {<-v>} {<Id.Lit_VarLike 'opt_start='> ($ Id.VSub_DollarName '$opt_start')} {<-v>} {<Id.Lit_VarLike 'opt_end='> ($ Id.VSub_DollarName '$opt_end')} {<-v>} {<Id.Lit_VarLike 'b_start='> ($ Id.VSub_DollarName '$b_start')} { (SQ <'\n'> <'\t# common fields\n'> <'\t$1 != "#" {\n'> <'\t\t# task name can contain dashes\n'> <'\t\tcomm = pid = $1\n'> <'\t\tsub(/-[0-9][0-9]*/, "", comm)\n'> <'\t\tsub(/.*-/, "", pid)\n'> <'\t\ttime = $(3+o); sub(":", "", time)\n'> <'\t\tdev = $(5+o)\n'> <'\t}\n'> <'\n'> <'\t# block I/O request\n'> <'\t$1 != "#" && $0 ~ b_start {\n'> <'\t\tif (opt_name && match(comm, name) == 0)\n'> <'\t\t\tnext\n'> <'\t\t#\n'> <'\t\t# example: (fields1..4+o) 202,1 W 0 () 12862264 + 8 [tar]\n'> <'\t\t# The cmd field "()" might contain multiple words (hex),\n'> <'\t\t# hence stepping from the right (NF-3).\n'> <'\t\t#\n'> <'\t\tloc = $(NF-3)\n'> <'\t\tstarts[dev, loc] = time\n'> <'\t\tcomms[dev, loc] = comm\n'> <'\t\tpids[dev, loc] = pid\n'> <'\t\tnext\n'> <'\t}\n'> <'\n'> <'\t# block I/O completion\n'> <'\t$1 != "#" && $0 ~ /rq_complete/ {\n'> <'\t\t#\n'> <'\t\t# example: (fields1..4+o) 202,1 W () 12862256 + 8 [0]\n'> <'\t\t#\n'> <'\t\tdir = $(6+o)\n'> <'\t\tloc = $(NF-3)\n'> <'\t\tnsec = $(NF-1)\n'> <'\n'> <'\t\tif (starts[dev, loc] > 0) {\n'> <'\t\t\tlatency = sprintf("%.2f",\n'> <'\t\t\t 1000 * (time - starts[dev, loc]))\n'> <'\t\t\tcomm = comms[dev, loc]\n'> <'\t\t\tpid = pids[dev, loc]\n'> <'\n'> <'\t\t\tif (opt_start)\n'> <'\t\t\t\tprintf "%-15s ", starts[dev, loc]\n'> <'\t\t\tif (opt_end)\n'> <'\t\t\t\tprintf "%-15s ", time\n'> <'\t\t\tprintf "%-12.12s %-6s %-4s %-8s %-12s %-6s %8s\\n",\n'> <'\t\t\t comm, pid, dir, dev, loc, nsec * 512, latency\n'> <'\t\t\tif (!opt_duration)\n'> <'\t\t\t\tfflush()\n'> <'\n'> <'\t\t\tdelete starts[dev, loc]\n'> <'\t\t\tdelete comms[dev, loc]\n'> <'\t\t\tdelete pids[dev, loc]\n'> <'\t\t}\n'> <'\t\tnext\n'> <'\t}\n'> <'\n'> <'\t$0 ~ /LOST.*EVENTS/ { print "WARNING: " $0 > "/dev/stderr" }\n'> ) } ) ] negated: F ) (C {<end>}) ] )