diff options
Diffstat (limited to 'src/arch/arm/table_walker.hh')
| -rw-r--r-- | src/arch/arm/table_walker.hh | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/arch/arm/table_walker.hh b/src/arch/arm/table_walker.hh index b5d67c9a1..b265f5165 100644 --- a/src/arch/arm/table_walker.hh +++ b/src/arch/arm/table_walker.hh @@ -794,6 +794,12 @@ class TableWalker : public MemObject TableWalker *tableWalker; + /** Timestamp for calculating elapsed time in service (for stats) */ + Tick startTime; + + /** Page entries walked during service (for stats) */ + unsigned levels; + void doL1Descriptor(); void doL2Descriptor(); @@ -883,6 +889,26 @@ class TableWalker : public MemObject bool _haveLargeAsid64; ArmSystem *armSys; + /** Statistics */ + Stats::Scalar statWalks; + Stats::Scalar statWalksShortDescriptor; + Stats::Scalar statWalksLongDescriptor; + Stats::Vector statWalksShortTerminatedAtLevel; + Stats::Vector statWalksLongTerminatedAtLevel; + Stats::Scalar statSquashedBefore; + Stats::Scalar statSquashedAfter; + Stats::Histogram statWalkWaitTime; + Stats::Histogram statWalkServiceTime; + Stats::Histogram statPendingWalks; // essentially "L" of queueing theory + Stats::Vector statPageSizes; + Stats::Vector2d statRequestOrigin; + + mutable unsigned pendingReqs; + mutable Tick pendingChangeTick; + + static const unsigned REQUESTED = 0; + static const unsigned COMPLETED = 1; + public: typedef ArmTableWalkerParams Params; TableWalker(const Params *p); @@ -903,6 +929,7 @@ class TableWalker : public MemObject virtual void drainResume(); virtual BaseMasterPort& getMasterPort(const std::string &if_name, PortID idx = InvalidPortID); + void regStats(); /** * Allow the MMU (overseeing both stage 1 and stage 2 TLBs) to @@ -976,6 +1003,10 @@ class TableWalker : public MemObject EventWrapper<TableWalker, &TableWalker::processWalkWrapper> doProcessEvent; void nextWalk(ThreadContext *tc); + + void pendingChange(); + + static uint8_t pageSizeNtoStatBin(uint8_t N); }; } // namespace ArmISA |