VISHNU RAMADAS has submitted this change. (
https://gem5-review.googlesource.com/c/public/gem5/+/67202?usp=email )
Change subject: gpu-compute : Fix incorrect TLB stats when FunctionalTLB is
used
..
gpu-compute : Fix incorrect TLB stats when FunctionalTLB is used
When FunctionalTLB is used in SE mode, the stats tlbLatency and
tlbCycles report negative values. This patch fixes it by disabling the
updates that result in negative values when FunctionalTLB is set to true
Change-Id: I6962785fc1730b166b6d5b879e9c7618a8d6d4b3
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/67202
Reviewed-by: Matt Sinclair
Maintainer: Matt Sinclair
Maintainer: Matthew Poremba
Reviewed-by: Matthew Poremba
Tested-by: kokoro
---
M src/gpu-compute/compute_unit.cc
1 file changed, 22 insertions(+), 1 deletion(-)
Approvals:
kokoro: Regressions pass
Matt Sinclair: Looks good to me, approved
Matthew Poremba: Looks good to me, approved; Looks good to me, approved
Matt Sinclair: Looks good to me, approved
diff --git a/src/gpu-compute/compute_unit.cc
b/src/gpu-compute/compute_unit.cc
index 62cfbf9..06fe28f 100644
--- a/src/gpu-compute/compute_unit.cc
+++ b/src/gpu-compute/compute_unit.cc
@@ -1078,7 +1078,9 @@
fatal("pkt is not a read nor a write\n");
}
-stats.tlbCycles -= curTick();
+if (!functionalTLB) {
+stats.tlbCycles -= curTick();
+}
++stats.tlbRequests;
PortID tlbPort_index = perLaneTLB ? index : 0;
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I6962785fc1730b166b6d5b879e9c7618a8d6d4b3
Gerrit-Change-Number: 67202
Gerrit-PatchSet: 2
Gerrit-Owner: VISHNU RAMADAS
Gerrit-Reviewer: Matt Sinclair
Gerrit-Reviewer: Matt Sinclair
Gerrit-Reviewer: Matthew Poremba
Gerrit-Reviewer: VISHNU RAMADAS
Gerrit-Reviewer: kokoro
Gerrit-MessageType: merged
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