gem5 v24.0.0.0
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Update performance level event, encapsulates all the required information for a future call to change a domain's performance level. More...
Public Member Functions | |
UpdateEvent () | |
void | updatePerfLevel () |
Updates the performance level by modifying the clock and the voltage of the associated clocked objects. | |
void | process () |
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Event (Priority p=Default_Pri, Flags f=0) | |
bool | scheduled () const |
Determine if the current event is scheduled. | |
void | squash () |
Squash the current event. | |
bool | squashed () const |
Check whether the event is squashed. | |
bool | isExitEvent () const |
See if this is a SimExitEvent (without resorting to RTTI) | |
bool | isManaged () const |
Check whether this event will auto-delete. | |
bool | isAutoDelete () const |
The function returns true if the object is automatically deleted after the event is processed. | |
Tick | when () const |
Get the time that the event is scheduled. | |
Priority | priority () const |
Get the event priority. | |
virtual BaseGlobalEvent * | globalEvent () |
If this is part of a GlobalEvent, return the pointer to the Global Event. | |
void | serialize (CheckpointOut &cp) const override |
Serialize an object. | |
void | unserialize (CheckpointIn &cp) override |
Unserialize an object. | |
virtual | ~Event () |
virtual const std::string | name () const |
virtual const char * | description () const |
Return a C string describing the event. | |
void | dump () const |
Dump the current event data. | |
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Serializable () | |
virtual | ~Serializable () |
void | serializeSection (CheckpointOut &cp, const char *name) const |
Serialize an object into a new section. | |
void | serializeSection (CheckpointOut &cp, const std::string &name) const |
void | unserializeSection (CheckpointIn &cp, const char *name) |
Unserialize an a child object. | |
void | unserializeSection (CheckpointIn &cp, const std::string &name) |
Public Attributes | |
DomainID | domainIDToSet |
ID of the domain that will be changed by the in-flight event. | |
PerfLevel | perfLevelToSet |
Target performance level of the in-flight event. | |
Static Public Attributes | |
static DVFSHandler * | dvfsHandler |
Static pointer to the single DVFS hander for all the update events. | |
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static const Priority | Minimum_Pri = SCHAR_MIN |
Event priorities, to provide tie-breakers for events scheduled at the same cycle. | |
static const Priority | Debug_Enable_Pri = -101 |
If we enable tracing on a particular cycle, do that as the very first thing so we don't miss any of the events on that cycle (even if we enter the debugger). | |
static const Priority | Debug_Break_Pri = -100 |
Breakpoints should happen before anything else (except enabling trace output), so we don't miss any action when debugging. | |
static const Priority | CPU_Switch_Pri = -31 |
CPU switches schedule the new CPU's tick event for the same cycle (after unscheduling the old CPU's tick event). | |
static const Priority | Delayed_Writeback_Pri = -1 |
For some reason "delayed" inter-cluster writebacks are scheduled before regular writebacks (which have default priority). | |
static const Priority | Default_Pri = 0 |
Default is zero for historical reasons. | |
static const Priority | DVFS_Update_Pri = 31 |
DVFS update event leads to stats dump therefore given a lower priority to ensure all relevant states have been updated. | |
static const Priority | Serialize_Pri = 32 |
Serailization needs to occur before tick events also, so that a serialize/unserialize is identical to an on-line CPU switch. | |
static const Priority | CPU_Tick_Pri = 50 |
CPU ticks must come after other associated CPU events (such as writebacks). | |
static const Priority | CPU_Exit_Pri = 64 |
If we want to exit a thread in a CPU, it comes after CPU_Tick_Pri. | |
static const Priority | Stat_Event_Pri = 90 |
Statistics events (dump, reset, etc.) come after everything else, but before exit. | |
static const Priority | Progress_Event_Pri = 95 |
Progress events come at the end. | |
static const Priority | Sim_Exit_Pri = 100 |
If we want to exit on this cycle, it's the very last thing we do. | |
static const Priority | Maximum_Pri = SCHAR_MAX |
Maximum priority. | |
Additional Inherited Members | |
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typedef int8_t | Priority |
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static const std::string & | currentSection () |
Gets the fully-qualified name of the active section. | |
static void | generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream) |
Generate a checkpoint file so that the serialization can be routed to it. | |
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typedef unsigned short | FlagsType |
typedef ::gem5::Flags< FlagsType > | Flags |
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Flags | getFlags () const |
bool | isFlagSet (Flags _flags) const |
void | setFlags (Flags _flags) |
void | clearFlags (Flags _flags) |
void | clearFlags () |
virtual void | trace (const char *action) |
This function isn't really useful if TRACING_ON is not defined. | |
const std::string | instanceString () const |
Return the instance number as a string. | |
void | acquire () |
Memory management hooks for events that have the Managed flag set. | |
void | release () |
Managed event removed from the event queue. | |
virtual void | acquireImpl () |
virtual void | releaseImpl () |
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static const FlagsType | PublicRead = 0x003f |
static const FlagsType | PublicWrite = 0x001d |
static const FlagsType | Squashed = 0x0001 |
static const FlagsType | Scheduled = 0x0002 |
static const FlagsType | Managed = 0x0004 |
static const FlagsType | AutoDelete = Managed |
static const FlagsType | Reserved0 = 0x0008 |
This used to be AutoSerialize. | |
static const FlagsType | IsExitEvent = 0x0010 |
static const FlagsType | IsMainQueue = 0x0020 |
static const FlagsType | Initialized = 0x7a40 |
static const FlagsType | InitMask = 0xffc0 |
Update performance level event, encapsulates all the required information for a future call to change a domain's performance level.
Definition at line 229 of file dvfs_handler.hh.
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inline |
Definition at line 231 of file dvfs_handler.hh.
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inlinevirtual |
Implements gem5::Event.
Definition at line 257 of file dvfs_handler.hh.
References updatePerfLevel().
void gem5::DVFSHandler::UpdateEvent::updatePerfLevel | ( | ) |
Updates the performance level by modifying the clock and the voltage of the associated clocked objects.
Gets information from domainIDToSet and perfLevelToSet for easier calling through an event.
Definition at line 158 of file dvfs_handler.cc.
References gem5::ArmISA::d, domainIDToSet, gem5::statistics::dump(), dvfsHandler, gem5::DVFSHandler::findDomain(), perfLevelToSet, and gem5::statistics::reset().
Referenced by process().
DomainID gem5::DVFSHandler::UpdateEvent::domainIDToSet |
ID of the domain that will be changed by the in-flight event.
Definition at line 242 of file dvfs_handler.hh.
Referenced by gem5::DVFSHandler::DVFSHandler(), gem5::DVFSHandler::unserialize(), and updatePerfLevel().
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static |
Static pointer to the single DVFS hander for all the update events.
Definition at line 237 of file dvfs_handler.hh.
Referenced by gem5::DVFSHandler::DVFSHandler(), gem5::DVFSHandler::unserialize(), and updatePerfLevel().
PerfLevel gem5::DVFSHandler::UpdateEvent::perfLevelToSet |
Target performance level of the in-flight event.
Definition at line 247 of file dvfs_handler.hh.
Referenced by gem5::DVFSHandler::perfLevel(), and updatePerfLevel().