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| author | Andreas Hansson <andreas.hansson@arm.com> | 2016-05-26 11:56:24 +0100 |
|---|---|---|
| committer | Andreas Hansson <andreas.hansson@arm.com> | 2016-05-26 11:56:24 +0100 |
| commit | d023b7e8dba012298d6396ae4734755ce1f194d1 (patch) | |
| tree | 005786bcb0cacb7c19be628a1cea09e89190f90e /src/cpu/testers/traffic_gen/traffic_gen.cc | |
| parent | 4ff4f9c531feb99561105117b6ceeb4eb85d7829 (diff) | |
| download | gem5-d023b7e8dba012298d6396ae4734755ce1f194d1.tar.xz | |
cpu: Add a basic progress check to the TrafficGen
This patch adds a progress check to the TrafficGen so that it is
easier to detect deadlock scenarios where the generator gets stuck
waiting for a retry, and makes no further progress.
Change-Id: Ifb8779ad0939f52c0518d0e867bac73f99b82e2b
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Radhika Jagtap <radhika.jagtap@arm.com>
Diffstat (limited to 'src/cpu/testers/traffic_gen/traffic_gen.cc')
| -rw-r--r-- | src/cpu/testers/traffic_gen/traffic_gen.cc | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/cpu/testers/traffic_gen/traffic_gen.cc b/src/cpu/testers/traffic_gen/traffic_gen.cc index a405351ed..fbb26baa8 100644 --- a/src/cpu/testers/traffic_gen/traffic_gen.cc +++ b/src/cpu/testers/traffic_gen/traffic_gen.cc @@ -1,5 +1,5 @@ /* - * Copyright (c) 2012-2013 ARM Limited + * Copyright (c) 2012-2013, 2016 ARM Limited * All rights reserved * * The license below extends only to copyright in the software and shall @@ -57,6 +57,8 @@ TrafficGen::TrafficGen(const TrafficGenParams* p) masterID(system->getMasterId(name())), configFile(p->config_file), elasticReq(p->elastic_req), + progressCheck(p->progress_check), + noProgressEvent(this), nextTransitionTick(0), nextPacketTick(0), currState(0), @@ -179,6 +181,9 @@ TrafficGen::unserialize(CheckpointIn &cp) void TrafficGen::update() { + // shift our progress-tracking event forward + reschedule(noProgressEvent, curTick() + progressCheck, true); + // if we have reached the time for the next state transition, then // perform the transition if (curTick() >= nextTransitionTick) { @@ -512,6 +517,13 @@ TrafficGen::recvReqRetry() } void +TrafficGen::noProgress() +{ + fatal("TrafficGen %s spent %llu ticks without making progress", + name(), progressCheck); +} + +void TrafficGen::regStats() { // Initialise all the stats |