21 lines
710 B
Plaintext
21 lines
710 B
Plaintext
|
* ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU)
|
||
|
|
|
||
|
|
ARMv8.2 introduces the optional Statistical Profiling Extension for collecting
|
||
|
|
performance sample data using an in-memory trace buffer.
|
||
|
|
|
||
|
|
** SPE Required properties:
|
||
|
|
|
||
|
|
- compatible : should be one of:
|
||
|
|
"arm,statistical-profiling-extension-v1"
|
||
|
|
|
||
|
|
- interrupts : Exactly 1 PPI must be listed. For heterogeneous systems where
|
||
|
|
SPE is only supported on a subset of the CPUs, please consult
|
||
|
|
the arm,gic-v3 binding for details on describing a PPI partition.
|
||
|
|
|
||
|
|
** Example:
|
||
|
|
|
||
|
|
spe-pmu {
|
||
|
|
compatible = "arm,statistical-profiling-extension-v1";
|
||
|
|
interrupts = <GIC_PPI 05 IRQ_TYPE_LEVEL_HIGH &part1>;
|
||
|
|
};
|