Apply the gem5 namespace to the codebase.
Some anonymous namespaces could theoretically be removed,
but since this change's main goal was to keep conflicts
at a minimum, it was decided not to modify much the
general shape of the files.
A few missing comments of the form "// namespace X" that
occurred before the newly added "} // namespace gem5"
have been added for consistency.
std out should not be included in the gem5 namespace, so
they weren't.
ProtoMessage has not been included in the gem5 namespace,
since I'm not familiar with how proto works.
Regarding the SystemC files, although they belong to gem5,
they actually perform integration between gem5 and SystemC;
therefore, it deserved its own separate namespace.
Files that are automatically generated have been included
in the gem5 namespace.
The .isa files currently are limited to a single namespace.
This limitation should be later removed to make it easier
to accomodate a better API.
Regarding the files in util, gem5:: was prepended where
suitable. Notice that this patch was tested as much as
possible given that most of these were already not
previously compiling.
Change-Id: Ia53d404ec79c46edaa98f654e23bc3b0e179fe2d
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/46323
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Tested-by: kokoro <noreply+kokoro@google.com>
PowerDomains group multiple objects together to regulate their power
state. There are 2 types of objects in a PowerDomain: leaders and
followers. The power state of a PowerDomain is the most performant
power state of any of the leaders. The power state of the followers is
determined by the power state of the PowerDomain they belong to: they
need to be in a power state which is more or equally performant to the
power state of the PowerDomain.
Leaders can be ClockedObjects or other PowerDomains. Followers can
only be ClockedObjects. PowerDomains can be be nested but a
PowerDomain can only be a leader of another PowerDomain, NOT a
follower. PowerDomains are not present in the hierarchy by default,
the user needs to create and configure them in the configuration file.
The user can add an hierachy by setting the led_by parameter. gem5
will then create leaders and followers for each domain and calculate
the allowed power states for the domain.
Objects in a PowerDomain need to have at least the ON state in the
possible_states.
An example of a powerDomain config is:
pd = PowerDomain()
cpu0 = BaseCPU()
cpu1 = BaseCPU()
shared_cache = BaseCache()
cache.power_state.led_by = pd
pd.led_by = [cpu0, cpu1]
This will create a PowerDomain, where the CPUs determine their own
power states and the shared cache (via the PowerDomain) follows those
power states (when possible).
Change-Id: I4c4cd01f06d45476c6e0fb2afeb778613733e2ff
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Sascha Bischoff <sascha.bischoff@arm.com>
Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/28051
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
This commit adds the concept of possible power states to the
PowerState SimObject. This is a list of the power states a specific
object can be in. Before transitioning to a power state, a PowerState
object will first check if the requested power states is actually an
allowed state. The user can restricted the power states a
ClockedObject can go to during configuration. In addition, this change
sets the power states, a CPU can be in.
Change-Id: Ida414a87554a14f09767a272b54b5d19bfc8e911
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/28050
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
This commit does not make any functional changes but just rearranges
the existing code with regard to the power states. Previously, all
code regarding power states was in the ClockedObjects. However, it
seems more logical and cleaner to move this code into a separate
class, called PowerState. The PowerState is a now SimObject. Every
ClockedObject has a PowerState but this patch also allows for objects
with PowerState which are not ClockedObjects.
Change-Id: Id2db86dc14f140dc9d0912a8a7de237b9df9120d
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Sascha Bischoff <sascha.bischoff@arm.com>
Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/28049
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
