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| author | Xianwei Zhang <xianwei.zhang@amd.com> | 2018-09-19 19:14:40 -0400 |
|---|---|---|
| committer | Xianwei Zhang <xianwei.zhang@amd.com> | 2018-09-24 21:06:38 +0000 |
| commit | 9556aa3232ac6f782d715c15d2b4b62f5e7cfb9e (patch) | |
| tree | d08e5ed64bcdb841509b647cb7d0ceee865c49ca /src/mem/ruby/system/RubySystem.py | |
| parent | 7bfb7f3a43f382eb49853f47b140bfd6caad0fb8 (diff) | |
| download | gem5-9556aa3232ac6f782d715c15d2b4b62f5e7cfb9e.tar.xz | |
mem-ruby: Fix a bug in MessageBuffer randomization
In the previous implementation, messages are randomly inserted with
delays only if both RubySystem and MessageBuffer randomization flags
are set true. However, to find race conditions and cover more slicc
transitions, ruby random testers rely on setting RubySystem flag to
turn on randomization on all message buffers.
As a fix, this patch enables a message buffer to have randomization
when either RubySystem or its own flag is set.
Change-Id: I1e076908ff07e5846ebad4f4fc1c8f28d40bbfd4
Reviewed-on: https://gem5-review.googlesource.com/12784
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Diffstat (limited to 'src/mem/ruby/system/RubySystem.py')
| -rw-r--r-- | src/mem/ruby/system/RubySystem.py | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mem/ruby/system/RubySystem.py b/src/mem/ruby/system/RubySystem.py index 358f4dfca..5dcfe2f81 100644 --- a/src/mem/ruby/system/RubySystem.py +++ b/src/mem/ruby/system/RubySystem.py @@ -35,7 +35,9 @@ class RubySystem(ClockedObject): type = 'RubySystem' cxx_header = "mem/ruby/system/RubySystem.hh" randomization = Param.Bool(False, - "insert random delays on message enqueue times"); + "insert random delays on message enqueue times (if True, all message \ + buffers are enforced to have randomization; otherwise, a message \ + buffer set its own flag to enable/disable randomization)"); block_size_bytes = Param.UInt32(64, "default cache block size; must be a power of two"); memory_size_bits = Param.UInt32(64, |