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Linux kernel mirror (for testing)
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1* ARC Performance Monitor Unit
2
3The ARC 700 can be configured with a pipeline performance monitor for counting
4CPU and cache events like cache misses and hits.
5
6Note that:
7 * ARC 700 refers to a family of ARC processor cores;
8 - There is only one type of PMU available for the whole family;
9 - The PMU may support different sets of events; supported events are probed
10 at boot time, as required by the reference manual.
11
12 * The ARC 700 PMU does not support interrupts; although HW events may be
13 counted, the HW events themselves cannot serve as a trigger for a sample.
14
15Required properties:
16
17- compatible : should contain
18 "snps,arc700-pmu"
19
20Example:
21
22pmu {
23 compatible = "snps,arc700-pmu";
24};