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Documentation / devicetree / bindings / arc / pmu.txt




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Based on kernel version 3.16. Page generated on 2014-08-06 21:36 EST.

1	* ARC Performance Monitor Unit
2	
3	The ARC 700 can be configured with a pipeline performance monitor for counting
4	CPU and cache events like cache misses and hits.
5	
6	Note 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	
15	Required properties:
16	
17	- compatible : should contain
18		"snps,arc700-pmu"
19	
20	Example:
21	
22	pmu {
23	        compatible = "snps,arc700-pmu";
24	};
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