diff options
| author | Swapnil Haria <swapnilster@gmail.com> | 2017-06-13 09:46:58 -0500 |
|---|---|---|
| committer | Sean Wilson <spwilson2@wisc.edu> | 2017-07-17 15:16:16 +0000 |
| commit | c305e150048b2ac92891b1054f0c65a6c3374e90 (patch) | |
| tree | 624e3cd3af17c63c4e8fddce2e54c202879a19cd /src/arch/x86/tlb.cc | |
| parent | d2ab7234685bd8c007d10a525f67265a1fcb5fa4 (diff) | |
| download | gem5-c305e150048b2ac92891b1054f0c65a6c3374e90.tar.xz | |
x86: Add stats to X86 TLB
Change-Id: Iebf7d245de66eebc8d4c59e62e52adf6cf51e1e4
Signed-off-by: Sean Wilson <spwilson2@wisc.edu>
Reviewed-on: https://gem5-review.googlesource.com/3980
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Diffstat (limited to 'src/arch/x86/tlb.cc')
| -rw-r--r-- | src/arch/x86/tlb.cc | 40 |
1 files changed, 36 insertions, 4 deletions
diff --git a/src/arch/x86/tlb.cc b/src/arch/x86/tlb.cc index 191e91a00..e954c9c73 100644 --- a/src/arch/x86/tlb.cc +++ b/src/arch/x86/tlb.cc @@ -332,7 +332,20 @@ TLB::translate(RequestPtr req, ThreadContext *tc, Translation *translation, DPRINTF(TLB, "Paging enabled.\n"); // The vaddr already has the segment base applied. TlbEntry *entry = lookup(vaddr); + if (mode == Read) { + rdAccesses++; + } else { + wrAccesses++; + } if (!entry) { + DPRINTF(TLB, "Handling a TLB miss for " + "address %#x at pc %#x.\n", + vaddr, tc->instAddr()); + if (mode == Read) { + rdMisses++; + } else { + wrMisses++; + } if (FullSystem) { Fault fault = walker->start(tc, translation, req, mode); if (timing || fault != NoFault) { @@ -343,10 +356,6 @@ TLB::translate(RequestPtr req, ThreadContext *tc, Translation *translation, entry = lookup(vaddr); assert(entry); } else { - DPRINTF(TLB, "Handling a TLB miss for " - "address %#x at pc %#x.\n", - vaddr, tc->instAddr()); - Process *p = tc->getProcessPtr(); TlbEntry newEntry; bool success = p->pTable->lookup(vaddr, newEntry); @@ -445,6 +454,29 @@ TLB::getWalker() } void +TLB::regStats() +{ + using namespace Stats; + + rdAccesses + .name(name() + ".rdAccesses") + .desc("TLB accesses on read requests"); + + wrAccesses + .name(name() + ".wrAccesses") + .desc("TLB accesses on write requests"); + + rdMisses + .name(name() + ".rdMisses") + .desc("TLB misses on read requests"); + + wrMisses + .name(name() + ".wrMisses") + .desc("TLB misses on write requests"); + +} + +void TLB::serialize(CheckpointOut &cp) const { // Only store the entries in use. |