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author | Nathan Binkert <binkertn@umich.edu> | 2003-12-08 14:01:48 -0500 |
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committer | Nathan Binkert <binkertn@umich.edu> | 2003-12-08 14:01:48 -0500 |
commit | 1d7c11af7d876e758e7afce47782563aefdcdcc7 (patch) | |
tree | c42cad0e4b7b9aaa4abfdfb93c56a06f20a1354b /cpu/simple_cpu/simple_cpu.cc | |
parent | 0ff2457bfaa223c70d431d100c5b5a92540ff6e2 (diff) | |
download | gem5-1d7c11af7d876e758e7afce47782563aefdcdcc7.tar.xz |
Instead of keeping track of the fraction of time that we're
idle, keep track of the fraction of time we're not idle. This
works better because the default processor state is idle, and
the default stat value is 0.
Keep the stat as idleFraction which is a formula that is equal
to 1 - notIdleFraction
--HG--
extra : convert_revision : 331c2e46f45ae0abda46988567ac2c4f7c42ccad
Diffstat (limited to 'cpu/simple_cpu/simple_cpu.cc')
-rw-r--r-- | cpu/simple_cpu/simple_cpu.cc | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/cpu/simple_cpu/simple_cpu.cc b/cpu/simple_cpu/simple_cpu.cc index 4b9a7c6bd..aaf8a9dc5 100644 --- a/cpu/simple_cpu/simple_cpu.cc +++ b/cpu/simple_cpu/simple_cpu.cc @@ -247,7 +247,7 @@ SimpleCPU::setStatus(Status new_status) case Idle: assert(old_status == Running); - idleFraction++; + notIdleFraction--; if (tickEvent.scheduled()) tickEvent.squash(); break; @@ -256,8 +256,8 @@ SimpleCPU::setStatus(Status new_status) assert(old_status == Idle || old_status == DcacheMissStall || old_status == IcacheMissComplete); - if (old_status == Idle && curTick != 0) - idleFraction--; + if (old_status == Idle) + notIdleFraction++; if (tickEvent.squashed()) tickEvent.reschedule(curTick + 1); @@ -304,6 +304,7 @@ SimpleCPU::regStats() .prereq(dcacheStallCycles) ; + idleFraction = constant(1.0) - notIdleFraction; numInsts = Statistics::scalar(numInst) - Statistics::scalar(startNumInst); simInsts += numInsts; } @@ -312,6 +313,7 @@ void SimpleCPU::resetStats() { startNumInst = numInst; + notIdleFraction = (_status != Idle); } void |