CPU: Add abandoned instructions to O3 Pipe Viewer
This commit is contained in:
Djordje Kovacevic
parent
bfffbb6797
commit
d060a28a29
4 changed files with 171 additions and 51 deletions
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@ -58,7 +58,6 @@
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#include "debug/Commit.hh"
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#include "debug/CommitRate.hh"
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#include "debug/ExecFaulting.hh"
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#include "debug/O3PipeView.hh"
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#include "params/DerivO3CPU.hh"
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#include "sim/faults.hh"
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#include "sim/full_system.hh"
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@ -1219,19 +1218,7 @@ DefaultCommit<Impl>::commitHead(DynInstPtr &head_inst, unsigned inst_num)
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rob->retireHead(tid);
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#if TRACING_ON
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// Print info needed by the pipeline activity viewer.
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DPRINTFR(O3PipeView, "O3PipeView:fetch:%llu:0x%08llx:%d:%llu:%s\n",
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head_inst->fetchTick,
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head_inst->instAddr(),
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head_inst->microPC(),
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head_inst->seqNum,
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head_inst->staticInst->disassemble(head_inst->instAddr()));
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DPRINTFR(O3PipeView, "O3PipeView:decode:%llu\n", head_inst->fetchTick + head_inst->decodeTick);
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DPRINTFR(O3PipeView, "O3PipeView:rename:%llu\n", head_inst->fetchTick + head_inst->renameTick);
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DPRINTFR(O3PipeView, "O3PipeView:dispatch:%llu\n", head_inst->fetchTick + head_inst->dispatchTick);
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DPRINTFR(O3PipeView, "O3PipeView:issue:%llu\n", head_inst->fetchTick + head_inst->issueTick);
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DPRINTFR(O3PipeView, "O3PipeView:complete:%llu\n", head_inst->fetchTick + head_inst->completeTick);
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DPRINTFR(O3PipeView, "O3PipeView:retire:%llu\n", curTick());
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head_inst->commitTick = curTick() - head_inst->fetchTick;
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#endif
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// If this was a store, record it for this cycle.
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@ -93,6 +93,8 @@ class BaseO3DynInst : public BaseDynInst<Impl>
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/** BaseDynInst constructor given a static inst pointer. */
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BaseO3DynInst(StaticInstPtr _staticInst, StaticInstPtr _macroop);
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~BaseO3DynInst();
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/** Executes the instruction.*/
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Fault execute();
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@ -123,12 +125,13 @@ class BaseO3DynInst : public BaseDynInst<Impl>
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public:
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#if TRACING_ON
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/** Tick records used for the pipeline activity viewer. */
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Tick fetchTick;
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uint32_t decodeTick;
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uint32_t renameTick;
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uint32_t dispatchTick;
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uint32_t issueTick;
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uint32_t completeTick;
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Tick fetchTick; // instruction fetch is completed.
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int32_t decodeTick; // instruction enters decode phase
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int32_t renameTick; // instruction enters rename phase
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int32_t dispatchTick;
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int32_t issueTick;
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int32_t completeTick;
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int32_t commitTick;
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#endif
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/** Reads a misc. register, including any side-effects the read
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@ -43,6 +43,7 @@
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#include "base/cp_annotate.hh"
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#include "cpu/o3/dyn_inst.hh"
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#include "sim/full_system.hh"
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#include "debug/O3PipeView.hh"
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template <class Impl>
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BaseO3DynInst<Impl>::BaseO3DynInst(StaticInstPtr staticInst,
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@ -62,6 +63,33 @@ BaseO3DynInst<Impl>::BaseO3DynInst(StaticInstPtr _staticInst,
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initVars();
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}
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template <class Impl>BaseO3DynInst<Impl>::~BaseO3DynInst()
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{
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#if TRACING_ON
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Tick val, fetch = this->fetchTick;
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// Print info needed by the pipeline activity viewer.
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DPRINTFR(O3PipeView, "O3PipeView:fetch:%llu:0x%08llx:%d:%llu:%s\n",
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fetch,
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this->instAddr(),
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this->microPC(),
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this->seqNum,
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this->staticInst->disassemble(this->instAddr()));
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val = (this->decodeTick == -1) ? 0 : fetch + this->decodeTick;
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DPRINTFR(O3PipeView, "O3PipeView:decode:%llu\n", val);
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val = (this->renameTick == -1) ? 0 : fetch + this->renameTick;
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DPRINTFR(O3PipeView, "O3PipeView:rename:%llu\n", val);
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val = (this->dispatchTick == -1) ? 0 : fetch + this->dispatchTick;
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DPRINTFR(O3PipeView, "O3PipeView:dispatch:%llu\n", val);
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val = (this->issueTick == -1) ? 0 : fetch + this->issueTick;
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DPRINTFR(O3PipeView, "O3PipeView:issue:%llu\n", val);
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val = (this->completeTick == -1) ? 0 : fetch + this->completeTick;
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DPRINTFR(O3PipeView, "O3PipeView:complete:%llu\n", val);
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val = (this->commitTick == -1) ? 0 : fetch + this->commitTick;
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DPRINTFR(O3PipeView, "O3PipeView:retire:%llu\n", val);
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#endif
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};
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template <class Impl>
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void
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BaseO3DynInst<Impl>::initVars()
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@ -82,12 +110,15 @@ BaseO3DynInst<Impl>::initVars()
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_numDestMiscRegs = 0;
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#if TRACING_ON
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fetchTick = 0;
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decodeTick = 0;
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renameTick = 0;
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dispatchTick = 0;
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issueTick = 0;
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completeTick = 0;
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// Value -1 indicates that particular phase
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// hasn't happened (yet).
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fetchTick = -1;
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decodeTick = -1;
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renameTick = -1;
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dispatchTick = -1;
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issueTick = -1;
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completeTick = -1;
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commitTick = -1;
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#endif
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}
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@ -42,36 +42,76 @@
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import optparse
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import os
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import sys
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import copy
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# Temporary storage for instructions. The queue is filled in out-of-order
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# until it reaches 'max_threshold' number of instructions. It is then
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# sorted out and instructions are printed out until their number drops to
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# 'min_threshold'.
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# It is assumed that the instructions are not out of order for more then
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# 'min_threshold' places - otherwise they will appear out of order.
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insts = {
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'queue': [] , # Instructions to print.
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'max_threshold':2000, # Instructions are sorted out and printed when
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# their number reaches this threshold.
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'min_threshold':1000, # Printing stops when this number is reached.
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'sn_start':0, # The first instruction seq. number to be printed.
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'sn_stop':0, # The last instruction seq. number to be printed.
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'tick_start':0, # The first tick to be printed
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'tick_stop':0, # The last tick to be printed
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'tick_drift':2000, # Used to calculate the start and the end of main
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# loop. We assume here that the instructions are not
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# out of order for more then 2000 CPU ticks,
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# otherwise the print may not start/stop
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# at the time specified by tick_start/stop.
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'only_committed':0 # Set if only committed instructions are printed.
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}
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def process_trace(trace, outfile, cycle_time, width, color, timestamps,
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start_tick, stop_tick, start_sn, stop_sn):
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committed_only, start_tick, stop_tick, start_sn, stop_sn):
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global insts
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insts['sn_start'] = start_sn
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insts['sn_stop'] = stop_sn
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insts['tick_start'] = start_tick
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insts['tick_stop'] = stop_tick
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insts['tick_drift'] = insts['tick_drift'] * cycle_time
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insts['only_committed'] = committed_only
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line = None
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fields = None
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# Skip lines up to region of interest
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# Read the first line
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line = trace.readline()
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if not line: return
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fields = line.split(':')
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# Skip lines up to the starting tick
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if start_tick != 0:
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while True:
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if fields[0] != 'O3PipeView': continue
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if (int(fields[2]) > 0 and
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int(fields[2]) >= start_tick-insts['tick_drift']): break
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line = trace.readline()
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if not line: return
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fields = line.split(':')
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if fields[0] != 'O3PipeView': continue
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if int(fields[2]) >= start_tick: break
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elif start_sn != 0:
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# Skip lines up to the starting sequence number
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if start_sn != 0:
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while True:
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line = trace.readline()
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if not line: return
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fields = line.split(':')
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if fields[0] != 'O3PipeView': continue
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if fields[1] == 'fetch' and int(fields[5]) >= start_sn: break
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else:
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if (fields[1] == 'fetch' and
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int(fields[5]) >= (start_sn-insts['max_threshold'])):
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break
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line = trace.readline()
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if not line: return
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fields = line.split(':')
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# Skip lines up to next instruction fetch
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while fields[0] != 'O3PipeView' or fields[1] != 'fetch':
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line = trace.readline()
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if not line: return
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fields = line.split(':')
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# Print header
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outfile.write('// f = fetch, d = decode, n = rename, p = dispatch, '
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'i = issue, c = complete, r = retire\n\n')
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@ -83,26 +123,65 @@ def process_trace(trace, outfile, cycle_time, width, color, timestamps,
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if timestamps:
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outfile.write('timestamps'.center(25))
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outfile.write('\n')
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# Region of interest
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curr_inst = {}
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while True:
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if fields[0] == 'O3PipeView':
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curr_inst[fields[1]] = int(fields[2])
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if fields[1] == 'fetch':
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if ((stop_tick > 0 and int(fields[2]) > stop_tick) or
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(stop_sn > 0 and int(fields[5]) > stop_sn)):
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if ((stop_tick > 0 and int(fields[2]) > stop_tick+insts['tick_drift']) or
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(stop_sn > 0 and int(fields[5]) > (stop_sn+insts['max_threshold']))):
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print_insts(outfile, cycle_time, width, color, timestamps, 0)
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return
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(curr_inst['pc'], curr_inst['upc']) = fields[3:5]
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curr_inst['sn'] = int(fields[5])
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curr_inst['disasm'] = ' '.join(fields[6][:-1].split())
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elif fields[1] == 'retire':
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print_inst(outfile, curr_inst, cycle_time, width, color,
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timestamps)
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queue_inst(outfile, curr_inst, cycle_time, width, color, timestamps)
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line = trace.readline()
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if not line: return
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fields = line.split(':')
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#Sorts out instructions according to sequence number
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def compare_by_sn(a, b):
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return cmp(a['sn'], b['sn'])
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# Puts new instruction into the print queue.
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# Sorts out and prints instructions when their number reaches threshold value
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def queue_inst(outfile, inst, cycle_time, width, color, timestamps):
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global insts
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l_copy = copy.deepcopy(inst)
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insts['queue'].append(l_copy)
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if len(insts['queue']) > insts['max_threshold']:
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print_insts(outfile, cycle_time, width, color, timestamps, insts['min_threshold'])
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# Sorts out and prints instructions in print queue
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def print_insts(outfile, cycle_time, width, color, timestamps, lower_threshold):
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global insts
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insts['queue'].sort(compare_by_sn)
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while len(insts['queue']) > lower_threshold:
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print_item=insts['queue'].pop(0)
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# As the instructions are processed out of order the main loop starts
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# earlier then specified by start_sn/tick and finishes later then what
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# is defined in stop_sn/tick.
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# Therefore, here we have to filter out instructions that reside out of
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# the specified boundaries.
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if (insts['sn_start'] > 0 and print_item['sn'] < insts['sn_start']):
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continue; # earlier then the starting sequence number
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if (insts['sn_stop'] > 0 and print_item['sn'] > insts['sn_stop']):
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continue; # later then the ending sequence number
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if (insts['tick_start'] > 0 and print_item['fetch'] < insts['tick_start']):
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continue; # earlier then the starting tick number
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if (insts['tick_stop'] > 0 and print_item['fetch'] > insts['tick_stop']):
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continue; # later then the ending tick number
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if (insts['only_committed'] != 0 and print_item['retire'] == 0):
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continue; # retire is set to zero if it hasn't been completed
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print_inst(outfile, print_item, cycle_time, width, color, timestamps)
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# Prints a single instruction
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def print_inst(outfile, inst, cycle_time, width, color, timestamps):
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if color:
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from m5.util.terminal import termcap
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@ -130,17 +209,30 @@ def print_inst(outfile, inst, cycle_time, width, color, timestamps):
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{'name': 'retire',
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'color': termcap.Blue + termcap.Reverse,
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'shorthand': 'r'}]
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# Print
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time_width = width * cycle_time
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base_tick = (inst['fetch'] / time_width) * time_width
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# Find out the time of the last event - it may not
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# be 'retire' if the instruction is not comlpeted.
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last_event_time = max(inst['fetch'], inst['decode'],inst['rename'],
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inst['dispatch'],inst['issue'], inst['complete'], inst['retire'])
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# Timeline shorter then time_width is printed in compact form where
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# the print continues at the start of the same line.
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if ((inst['retire'] - inst['fetch']) < time_width):
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if ((last_event_time - inst['fetch']) < time_width):
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num_lines = 1 # compact form
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else:
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num_lines = ((inst['retire'] - base_tick) / time_width) + 1
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num_lines = ((last_event_time - base_tick) / time_width) + 1
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curr_color = termcap.Normal
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# This will visually distinguish completed and abandoned intructions.
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if inst['retire'] == 0: dot = '=' # abandoned instruction
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else: dot = '.' # completed instruction
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for i in range(num_lines):
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start_tick = base_tick + i * time_width
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end_tick = start_tick + time_width
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@ -149,10 +241,11 @@ def print_inst(outfile, inst, cycle_time, width, color, timestamps):
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events = []
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for stage_idx in range(len(stages)):
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tick = inst[stages[stage_idx]['name']]
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if tick != 0:
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if tick >= start_tick and tick < end_tick:
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events.append((tick % time_width,
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stages[stage_idx]['name'],
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stage_idx))
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stage_idx, tick))
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events.sort()
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outfile.write('[')
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pos = 0
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@ -162,15 +255,17 @@ def print_inst(outfile, inst, cycle_time, width, color, timestamps):
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if (stages[event[2]]['name'] == 'dispatch' and
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inst['dispatch'] == inst['issue']):
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continue
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outfile.write(curr_color + '.' * ((event[0] / cycle_time) - pos))
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outfile.write(curr_color + dot * ((event[0] / cycle_time) - pos))
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outfile.write(stages[event[2]]['color'] +
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stages[event[2]]['shorthand'])
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if event[2] != len(stages) - 1: # event is not retire
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if event[3] != last_event_time: # event is not the last one
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curr_color = stages[event[2]]['color']
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else:
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curr_color = termcap.Normal
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pos = (event[0] / cycle_time) + 1
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outfile.write(curr_color + '.' * (width - pos) + termcap.Normal +
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outfile.write(curr_color + dot * (width - pos) + termcap.Normal +
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']-(' + str(base_tick + i * time_width).rjust(15) + ') ')
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if i == 0:
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outfile.write('%s.%s %s [%s]' % (
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@ -230,6 +325,10 @@ def main():
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'--timestamps',
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action='store_true', default=False,
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help="print fetch and retire timestamps (default: '%default')")
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parser.add_option(
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'--only_committed',
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action='store_true', default=False,
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help="display only committed (completed) instructions (default: '%default')")
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(options, args) = parser.parse_args()
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if len(args) != 1:
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parser.error('incorrect number of arguments')
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@ -248,7 +347,7 @@ def main():
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with open(options.outfile, 'w') as out:
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process_trace(trace, out, options.cycle_time, options.width,
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options.color, options.timestamps,
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*(tick_range + inst_range))
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options.only_committed, *(tick_range + inst_range))
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print 'done!'
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