Richard Cooper has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/69959?usp=email )
Change subject: configs: Add baremetal.py option to dump stats on PMU
interrupt.
......................................................................
configs: Add baremetal.py option to dump stats on PMU interrupt.
Add an option to baremetal.py to optionally enable the PMU
`dumpStatsOnInterrupt` feature.
Change-Id: Ie2ffe11c6aa1f3a57a58425ccec3681c780065c8
---
M configs/example/arm/baremetal.py
M configs/example/arm/devices.py
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/configs/example/arm/baremetal.py
b/configs/example/arm/baremetal.py
index be72ebe..c45b416 100644
--- a/configs/example/arm/baremetal.py
+++ b/configs/example/arm/baremetal.py
@@ -160,7 +160,10 @@
if args.with_pmu:
for cluster in system.cpu_cluster:
interrupt_numbers = [args.pmu_ppi_number] * len(cluster)
- cluster.addPMUs(interrupt_numbers)
+ cluster.addPMUs(
+ interrupt_numbers,
+ dump_stats_on_interrupt=args.pmu_dump_stats_on_interrupt,
+ )
if args.exit_on_uart_eot:
for uart in system.realview.uart:
@@ -284,6 +287,11 @@
"Must be an integer and a valid PPI number (16 <= int_num <= 31).",
)
parser.add_argument(
+ "--pmu-dump-stats-on-interrupt",
+ action="store_true",
+ help="Dump and reset gem5 stats on PMU interrupt.",
+ )
+ parser.add_argument(
"--exit-on-uart-eot",
action="store_true",
help="Exit simulation if any of the UARTs receive an EOT. Many "
diff --git a/configs/example/arm/devices.py b/configs/example/arm/devices.py
index 02574d2..c444a1d 100644
--- a/configs/example/arm/devices.py
+++ b/configs/example/arm/devices.py
@@ -147,7 +147,7 @@
cpu.connectCachedPorts(self.toL2Bus.cpu_side_ports)
self.toL2Bus.mem_side_ports = self.l2.cpu_side
- def addPMUs(self, ints, events=[]):
+ def addPMUs(self, ints, events=[], dump_stats_on_interrupt=False):
"""
Instantiates 1 ArmPMU per PE. The method is accepting a list of
interrupt numbers (ints) used by the PMU and a list of events to
@@ -159,12 +159,17 @@
:type ints: List[int]
:param events: Additional events to be measured by the PMUs
:type events: List[Union[ProbeEvent, SoftwareIncrement]]
+ :param dump_stats_on_interrupt: If true, then dump the gem5
statistics
+ when a PMU interrupt is triggered.
+ :type dump_stats_on_interrupt: bool
+
"""
assert len(ints) == len(self.cpus)
for cpu, pint in zip(self.cpus, ints):
int_cls = ArmPPI if pint < 32 else ArmSPI
for isa in cpu.isa:
isa.pmu = ArmPMU(interrupt=int_cls(num=pint))
+ isa.pmu.dumpStatsOnInterrupt = dump_stats_on_interrupt
isa.pmu.addArchEvents(
cpu=cpu,
itb=cpu.mmu.itb,
--
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Gerrit-MessageType: newchange
Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: Ie2ffe11c6aa1f3a57a58425ccec3681c780065c8
Gerrit-Change-Number: 69959
Gerrit-PatchSet: 1
Gerrit-Owner: Richard Cooper <richard.coo...@arm.com>
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