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39 #ifndef __MEM_PROBES_MEM_FOOTPRINT_HH__
40 #define __MEM_PROBES_MEM_FOOTPRINT_HH__
42 #include <unordered_set>
44 #include "base/callback.hh"
45 #include "mem/packet.hh"
46 #include "mem/probes/base.hh"
47 #include "sim/stats.hh"
48 #include "sim/system.hh"
50 struct MemFootprintProbeParams;
52 /// Probe to track footprint of accessed memory
53 /// Two granularity of footprint measurement i.e. cache line and page
54 class MemFootprintProbe : public BaseMemProbe
57 typedef std::unordered_set<Addr> AddrSet;
59 MemFootprintProbe(const MemFootprintProbeParams &p);
60 void regStats() override;
61 // Fix footprint tracking state on stat reset
65 /// Cache Line size for footprint measurement (log2)
66 const uint8_t cacheLineSizeLg2;
67 /// Page size for footprint measurement (log2)
68 const uint8_t pageSizeLg2;
69 const uint64_t totalCacheLinesInMem;
70 const uint64_t totalPagesInMem;
72 void insertAddr(Addr addr, AddrSet *set, uint64_t limit);
73 void handleRequest(const ProbePoints::PacketInfo &pkt_info) override;
75 /// Footprint at cache line size granularity
76 Stats::Scalar fpCacheLine;
77 /// Footprint at cache line size granularity, since simulation begin
78 Stats::Scalar fpCacheLineTotal;
79 /// Footprint at page granularity
81 /// Footprint at page granularity, since simulation begin
82 Stats::Scalar fpPageTotal;
84 // Addr set to track unique cache lines accessed
86 // Addr set to track unique cache lines accessed since simulation begin
87 AddrSet cacheLinesAll;
88 // Addr set to track unique pages accessed
90 // Addr set to track unique pages accessed since simulation begin
95 #endif //__MEM_PROBES_MEM_FOOTPRINT_HH__