d9317dd348
Increase the default number of CSHR's, we should really fix this or make it a parameter
Use a setBlocked call to tell the bus it should block
New technique for sampling and switchover:
1) Sampler switchover event happens
2) All cpus in the current phase of sampling associated with this sampler are signaled to switchover
3) Each cpu drains it's pipe of things being executed (stops fetching and waits for empty pipe)
4) Once the pipe is empty the cpu calls back to the sampler to signal it has finished, and moves into the switchedout state (continues not to fetch)
5) The sampler collects all the signals, once all cpus are drained it calls the new cpu's in the next phase to takeover from the correct cpu
6) The statistics are reset and the next switchover time is calculated from this point
cpu/base_cpu.cc:
cpu/base_cpu.hh:
cpu/simple_cpu/simple_cpu.cc:
cpu/simple_cpu/simple_cpu.hh:
Reconfigure the way the sampling switchover works
cpu/pc_event.cc:
More debugging information on kernel panic's
kern/linux/linux_system.cc:
More debug info for Kernel Die events
kern/linux/linux_system.hh:
More debug info for kernel die events
--HG--
extra : convert_revision : 61cc42e43ba738705aa1f1d167b65d4d6dee51ae
117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
/*
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* Copyright (c) 2004 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __KERN_LINUX_LINUX_SYSTEM_HH__
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#define __KERN_LINUX_LINUX_SYSTEM_HH__
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#include "sim/host.hh"
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#include "sim/system.hh"
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#include "targetarch/isa_traits.hh"
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/**
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* MAGIC address where the kernel arguments should go. Defined as
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* PARAM in linux kernel alpha-asm.
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*/
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const Addr PARAM_ADDR = ULL(0xfffffc000030a000);
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class ExecContext;
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class BreakPCEvent;
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class DebugPrintkEvent;
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class BreakPCEvent;
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class LinuxSkipDelayLoopEvent;
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class SkipFuncEvent;
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class IdleStartEvent;
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class PrintThreadInfo;
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/**
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* This class contains linux specific system code (Loading, Events, Binning).
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* It points to objects that are the system binaries to load and patches them
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* appropriately to work in simulator.
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*/
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class LinuxSystem : public System
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{
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private:
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#ifndef NDEBUG
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/** Event to halt the simulator if the kernel calls panic() */
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BreakPCEvent *kernelPanicEvent;
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/** Event to halt the simulator if the kernel calls die_if_kernel */
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BreakPCEvent *kernelDieEvent;
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#endif
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/**
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* Event to skip determine_cpu_caches() because we don't support
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* the IPRs that the code can access to figure out cache sizes
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*/
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SkipFuncEvent *skipCacheProbeEvent;
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/** PC based event to skip the ide_delay_50ms() call */
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SkipFuncEvent *skipIdeDelay50msEvent;
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/**
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* PC based event to skip the dprink() call and emulate its
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* functionality
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*/
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DebugPrintkEvent *debugPrintkEvent;
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/**
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* Skip calculate_delay_loop() rather than waiting for this to be
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* calculated
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*/
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LinuxSkipDelayLoopEvent *skipDelayLoopEvent;
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/**
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* Event to print information about thread switches if the trace flag
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* Thread is set
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*/
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PrintThreadInfo *printThreadEvent;
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/**
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* Event to bin Interrupts seperately from kernel code
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*/
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InterruptStartEvent *intStartEvent;
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/**
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* Event to bin Interrupts seperately from kernel code
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*/
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InterruptEndEvent *intEndEvent;
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InterruptEndEvent *intEndEvent2;
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InterruptEndEvent *intEndEvent3;
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/** Grab the PCBB of the idle process when it starts */
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IdleStartEvent *idleStartEvent;
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public:
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LinuxSystem(Params *p);
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~LinuxSystem();
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void setDelayLoop(ExecContext *xc);
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};
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#endif // __KERN_LINUX_LINUX_SYSTEM_HH__
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