hi everybody,
I've created an Event called SuspendThreadEvent(same properties with
ActivateThreadEvent in src/o3/cpu.cc) which will call
FullO3CPU<Impl>::suspendContext(int tid), to be able to initialize a
SuspendThreadEvent instance, I created scheduleSuspendThreadEvent(tid,cpu),
the problem is when I passed the correct parameter to
scheduleSuspendThreadEvent but according to the generated traces(see below)
the value used in the initialization is different.
commandline:
[EMAIL PROTECTED]:~/m5/repos/smt$ ./m5.debug --trace-file=event2.out
--trace-flags=Event tests/run.py quick/01.hello-2T-smt/alpha/tru64/o3-timing
in cpu.cc
if( params->max_insts_pause_each_thread == 0 ){ //number of instructiosn
has been coded in initialization at cpu.hh
279
280 for(int tid=0;tid < numThreads; tid++){
281
282 DPRINTF(Event,"Num of threads: %d\n",numThreads); //print
number of threads
283 DPRINTF(Event,"1. scheduling suspend thread: %d\n",tid);
//print out thread # to be suspended
284
scheduleSuspendThreadEvent(tid,params->max_insts_pause_each_thread);
285 DPRINTF(Event,"2. scheduling suspend thread: %d\n",tid);
//double check if value of tid has changed
286 }
287 }
in cpu.hh
/** added by dean michael ancajas, Schedule thread to suspend **/
189 void scheduleSuspendThreadEvent(int _tid,Tick when){
190 // Schedule thread to suspend, regardless of its current state.
191 DPRINTF(Event,"suspend thread:%d \n",_tid);
192
193 suspendThreadEvent[_tid] = *(new
SuspendThreadEvent(comInstEventQueue[_tid],100)); //for now this is
hard-coded to suspend in 100 instructions each thread
194 suspendThreadEvent[_tid].init(_tid,this);
201 }
Generated traces from event2.out:
2 0: system.cpu: Num of threads: 2
3 0: system.cpu: 1. scheduling suspend thread: 0
4 0: system.cpu: suspend thread:0
5 0: Event_15: FullO3CPU "Suspend Thread" event scheduled @ 100
6 0: Event_15: thread suspend: 0
7 0: system.cpu: 2. scheduling suspend thread: 0
8 0: system.cpu: Num of threads: 2
9 0: system.cpu: 1. scheduling suspend thread: 1
10 0: system.cpu: suspend thread:1
11 0: Event_16: FullO3CPU "Suspend Thread" event scheduled @ 100
12 0: Event_16: thread suspend: 9
13 0: system.cpu: 2. scheduling suspend thread: 1
14 0: Event_2: FullO3CPU tick event scheduled @ 0
The first SuspendThreadEvent was initialized properly(line 3's thread # and
line 6's thread # are equal, but the 2nd is not, line 9 says it must suspend
thread #1 but in line 12 it passed thread #9. I'm confused as to where the
value started to change. As we can also see in line 13, the value of tid in
cpu.cc hasn't change after calling the scheduleSuspendThreadEvent. So I
guess the culprit must be in the scheduleSuspendThreadEvent.. Any help/ideas
would be greatly appreciated.
thanks in advance,
Dean Michael Ancajas
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