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path: root/tests/configs/switcheroo.py
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2013-11-14tests: suppress output on switcheroo testsSteve Reinhardt
The output from the switcheroo tests is voluminous and (because it includes timestamps) highly sensitive to minor changes, leading to extremely large updates to the reference outputs. This patch addresses this problem by suppressing output from the tests. An internal parameter can be set to enable the output. Wiring that up to a command-line flag (perhaps even the rudimantary -v/-q options in m5/main.py) is left for future work.
2013-02-15config: Move CPU handover logic to m5.switchCpus()Andreas Sandberg
CPU switching consists of the following steps: 1. Drain the system 2. Switch out old CPUs (cpu.switchOut()) 3. Change the system timing mode to the mode the new CPUs require 4. Flush caches if switching to hardware virtualization 5. Inform new CPUs of the handover (cpu.takeOverFrom()) 6. Resume the system m5.switchCpus() previously only did step 2 & 5. Since information about the new processors' memory system requirements is now exposed, do all of the steps above. This patch adds automatic memory system switching and flush (if needed) to switchCpus(). Additionally, it adds optional draining to switchCpus(). This has the following implications: * changeToTiming and changeToAtomic are no longer needed, so they have been removed. * changeMemoryMode is only used internally, so it is has been renamed to be private. * switchCpus requires a reference to the system containing the CPUs as its first parameter. WARNING: This changeset breaks compatibility with existing configuration scripts since it changes the signature of m5.switchCpus().
2013-01-07tests: Add CPU switching testsAndreas Sandberg
This changeset adds a set of tests that stress the CPU switching code. It adds the following test configurations: * tsunami-switcheroo-full -- Alpha system (atomic, timing, O3) * realview-switcheroo-atomic -- ARM system (atomic<->atomic) * realview-switcheroo-timing -- ARM system (timing<->timing) * realview-switcheroo-o3 -- ARM system (O3<->O3) * realview-switcheroo-full -- ARM system (atomic, timing, O3) Reference data is provided for the 10.linux-boot test case. All of the tests trigger a CPU switch once per millisecond during the boot process. The in-order CPU model was not included in any of the tests as it does not support CPU handover.