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cpu-o3: Make the smtCommitPolicy a Param.ScopedEnum

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The smtCommitPolicy is a parameter in the o3 cpu that can have 3
different values. Previously this setting was done through a string
and a parser function would turn it into a c++ enum value. This
changeset turns the string into a python Param.ScopedEnum.

Change-Id: I3625f2c08a1ae0c3b0dce7a641c6ae1ce3fd79a5
Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/15400
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
This commit is contained in:
Nikos Nikoleris
2019-01-03 19:01:04 +00:00
parent 8c549224a5
commit 1e9f65343c
3 changed files with 11 additions and 34 deletions
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32
src/cpu/o3/commit_impl.hh
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@@ -82,7 +82,8 @@ DefaultCommit<Impl>::processTrapEvent(ThreadID tid)
template <class Impl>
DefaultCommit<Impl>::DefaultCommit(O3CPU *_cpu, DerivO3CPUParams *params)
: cpu(_cpu),
: commitPolicy(params->smtCommitPolicy),
cpu(_cpu),
iewToCommitDelay(params->iewToCommitDelay),
commitToIEWDelay(params->commitToIEWDelay),
renameToROBDelay(params->renameToROBDelay),
@@ -103,33 +104,12 @@ DefaultCommit<Impl>::DefaultCommit(O3CPU *_cpu, DerivO3CPUParams *params)
_status = Active;
_nextStatus = Inactive;
std::string policy = params->smtCommitPolicy;
//Convert string to lowercase
std::transform(policy.begin(), policy.end(), policy.begin(),
(int(*)(int)) tolower);
//Assign commit policy
if (policy == "aggressive"){
commitPolicy = Aggressive;
DPRINTF(Commit,"Commit Policy set to Aggressive.\n");
} else if (policy == "roundrobin"){
commitPolicy = RoundRobin;
if (commitPolicy == CommitPolicy::RoundRobin) {
//Set-Up Priority List
for (ThreadID tid = 0; tid < numThreads; tid++) {
priority_list.push_back(tid);
}
DPRINTF(Commit,"Commit Policy set to Round Robin.\n");
} else if (policy == "oldestready"){
commitPolicy = OldestReady;
DPRINTF(Commit,"Commit Policy set to Oldest Ready.");
} else {
panic("Invalid SMT commit policy. Options are: Aggressive, "
"RoundRobin, OldestReady");
}
for (ThreadID tid = 0; tid < Impl::MaxThreads; tid++) {
@@ -1431,16 +1411,16 @@ DefaultCommit<Impl>::getCommittingThread()
if (numThreads > 1) {
switch (commitPolicy) {
case Aggressive:
case CommitPolicy::Aggressive:
//If Policy is Aggressive, commit will call
//this function multiple times per
//cycle
return oldestReady();
case RoundRobin:
case CommitPolicy::RoundRobin:
return roundRobin();
case OldestReady:
case CommitPolicy::OldestReady:
return oldestReady();
default: