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gem5/src/cpu
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Faissal Sleiman a1570f544f o3: Fix occupancy checks for SMT 
A number of calls to isEmpty() and numFreeEntries()
should be thread-specific.

In cpu.cc, the fact that tid is /*commented*/ out is a bug. Say the rob
has instructions from thread 0 (isEmpty() returns false), and none from
thread 1. If we are trying to squash all of thread 1, then
readTailInst(thread 1) will be called because rob->isEmpty() returns
false. The result is end_it is not in the list and the while
statement loops indefinitely back over the cpu's instList.

In iew_impl.hh, all threads are told they have the entire remaining IQ, when
each thread actually has a certain allocation. The result is extra stalls at
the iew dispatch stage which the rename stage usually takes care of.

In commit_impl.hh, rob->readHeadInst(thread 1) can be called if the rob only
contains instructions from thread 0. This returns a dummyInst (which may work
since we are trying to squash all instructions, but hardly seems like the right
way to do it).

In rob_impl.hh this fix skips the rest of the function more frequently and is
more efficient.

Committed by: Nilay Vaish <nilay@cs.wisc.edu>
2014-04-19 09:00:30 -05:00
..
checker cpu: Make CPU and ThreadContext getters const 2014-03-07 15:56:23 -05:00
inorder cpu: Make CPU and ThreadContext getters const 2014-03-07 15:56:23 -05:00
kvm kvm, x86: Add initial support for multicore simulation 2014-04-09 16:01:58 +02:00
nocpu SCons: Support building without an ISA 2010-11-19 18:00:39 -06:00
o3 o3: Fix occupancy checks for SMT 2014-04-19 09:00:30 -05:00
ozone cpu: Make CPU and ThreadContext getters const 2014-03-07 15:56:23 -05:00
pred cpu: add consistent guarding to *_impl.hh files. 2013-10-17 10:20:45 -05:00
simple cpu: simple: Add support for using branch predictors 2014-02-09 20:49:28 +01:00
testers cpu: DRAM Traffic Generator 2014-03-23 11:11:58 -04:00
activity.cc Fix: Address a few benign memory leaks 2012-07-09 12:35:30 -04:00
activity.hh Fix: Address a few benign memory leaks 2012-07-09 12:35:30 -04:00
base.cc sim: simulate with multiple threads and event queues 2013-11-25 11:21:00 -06:00
base.hh cpu: Make CPU and ThreadContext getters const 2014-03-07 15:56:23 -05:00
base_dyn_inst.hh cpu: Make CPU and ThreadContext getters const 2014-03-07 15:56:23 -05:00
base_dyn_inst_impl.hh cpu: Add support for instructions that zero cache lines. 2014-01-24 15:29:30 -06:00
BaseCPU.py arm: Add support for ARMv8 (AArch64 & AArch32) 2014-01-24 15:29:34 -06:00
CheckerCPU.py sim: Include object header files in SWIG interfaces 2012-11-02 11:32:01 -05:00
cpuevent.cc
cpuevent.hh includes: sort all includes 2011-04-15 10:44:06 -07:00
decode_cache.hh ISA,CPU: Generalize and split out the components of the decode cache. 2012-05-26 13:45:12 -07:00
dummy_checker.cc sim: Add the notion of clock domains to all ClockedObjects 2013-06-27 05:49:49 -04:00
dummy_checker.hh cpu: Add header files for checker CPUs 2012-11-02 11:32:01 -05:00
DummyChecker.py cpu: Make checker CPUs inherit from CheckerCPU in the Python hierarchy 2013-02-15 17:40:08 -05:00
exec_context.hh SE/FS: Expose the same methods on the CPUs in SE and FS modes. 2011-11-01 04:01:13 -07:00
exetrace.cc debug : Fixes the issue wherein Debug symbols were not getting dumped into trace files for SE mode 2013-07-15 11:08:34 -04:00
exetrace.hh trace: reimplement the DTRACE function so it doesn't use a vector 2011-04-15 10:44:32 -07:00
ExeTracer.py sim: Include object header files in SWIG interfaces 2012-11-02 11:32:01 -05:00
func_unit.cc params: Deprecate old-style constructors; update most SimObject constructors. 2007-08-30 15:16:59 -04:00
func_unit.hh Param: Transition to Cycles for relevant parameters 2012-09-07 12:34:38 -04:00
FuncUnit.py sim: Include object header files in SWIG interfaces 2012-11-02 11:32:01 -05:00
inst_seq.hh build: fix compile problems pointed out by gcc 4.4 2009-11-04 16:57:01 -08:00
inteltrace.cc gcc: Clean-up of non-C++0x compliant code, first steps 2012-03-19 06:36:09 -04:00
inteltrace.hh sim: Include object header files in SWIG interfaces 2012-11-02 11:32:01 -05:00
IntelTrace.py sim: Include object header files in SWIG interfaces 2012-11-02 11:32:01 -05:00
intr_control.cc SE/FS: Get rid of FULL_SYSTEM in the CPU directory. 2011-11-18 01:33:28 -08:00
intr_control.hh arch: Header clean up for NOISA resurrection 2013-09-04 13:22:55 -04:00
intr_control_noisa.cc arch: Resurrect the NOISA build target and rename it NULL 2013-09-04 13:22:57 -04:00
IntrControl.py sim: Include object header files in SWIG interfaces 2012-11-02 11:32:01 -05:00
legiontrace.cc Decoder: Remove the thread context get/set from the decoder. 2013-01-04 19:00:45 -06:00
legiontrace.hh scons: Add warning for missing declarations 2013-02-19 05:56:07 -05:00
LegionTrace.py sim: Include object header files in SWIG interfaces 2012-11-02 11:32:01 -05:00
m5legion_interface.h add fsr to the list of registers we are interested in 2007-01-30 18:27:04 -05:00
nativetrace.cc trace: reimplement the DTRACE function so it doesn't use a vector 2011-04-15 10:44:32 -07:00
nativetrace.hh clang: Enable compiling gem5 using clang 2.9 and 3.0 2012-01-31 12:05:52 -05:00
NativeTrace.py sim: Include object header files in SWIG interfaces 2012-11-02 11:32:01 -05:00
op_class.hh CPU/ARM: Add SIMD op classes to CPU models and ARM ISA. 2010-11-15 14:04:04 -06:00
pc_event.cc arm: Enable support for triggering a sim panic on kernel panics 2013-04-22 13:20:31 -04:00
pc_event.hh arm: Enable support for triggering a sim panic on kernel panics 2013-04-22 13:20:31 -04:00
profile.cc includes: sort all includes 2011-04-15 10:44:06 -07:00
profile.hh includes: sort all includes 2011-04-15 10:44:06 -07:00
quiesce_event.cc trace: reimplement the DTRACE function so it doesn't use a vector 2011-04-15 10:44:32 -07:00
quiesce_event.hh clang: Enable compiling gem5 using clang 2.9 and 3.0 2012-01-31 12:05:52 -05:00
reg_class.cc cpu: add a condition-code register class 2013-10-15 14:22:44 -04:00
reg_class.hh cpu: add a condition-code register class 2013-10-15 14:22:44 -04:00
SConscript cpu: clean up architectural register classification 2013-10-15 14:22:42 -04:00
simple_thread.cc x86, cpu: corrects 270c9a75e91f, take over decoder on cpu switch 2013-01-22 00:10:10 -06:00
simple_thread.hh arch, cpu: Add support for flattening misc register indexes. 2014-01-24 15:29:30 -06:00
smt.hh includes: fix up code after sorting 2011-04-15 10:44:14 -07:00
static_inst.cc Decode: Pull instruction decoding out of the StaticInst class into its own. 2011-09-09 02:30:01 -07:00
static_inst.hh cpu: add a condition-code register class 2013-10-15 14:22:44 -04:00
static_inst_fwd.hh StaticInst: Merge StaticInst and StaticInstBase. 2011-09-09 02:40:11 -07:00
thread_context.cc cpu: add a condition-code register class 2013-10-15 14:22:44 -04:00
thread_context.hh cpu: Make CPU and ThreadContext getters const 2014-03-07 15:56:23 -05:00
thread_state.cc mem: Set the cache line size on a system level 2013-07-18 08:31:16 -04:00
thread_state.hh cpu: Make CPU and ThreadContext getters const 2014-03-07 15:56:23 -05:00
timebuf.hh Move sched_list.hh and timebuf.hh from src/base to src/cpu. 2011-01-03 14:35:47 -08:00
translation.hh mem: track per-request latencies and access depths in the cache hierarchy 2014-01-24 15:29:30 -06:00