power/powercap/powercap.rst

13 form of a tree of objects. The objects at the root level of the tree represent
15 example, the intel-rapl control type represents the Intel "Running Average
16 Power Limit" (RAPL) technology, whereas the 'idle-injection' control type
35   └──intel-rapl
36       ├──intel-rapl:0
43       │   ├──device -> ../../intel-rapl
45       │   ├──intel-rapl:0:0
52       │   │   ├──device -> ../../intel-rapl:0
60       │   │   ├──subsystem -> ../../../../../../class/power_cap
62       │   ├──intel-rapl:0:1
69       │   │   ├──device -> ../../intel-rapl:0
77       │   │   ├──subsystem -> ../../../../../../class/power_cap
86       │   ├──subsystem -> ../../../../../class/power_cap
89       ├──intel-rapl:1
96       │   ├──device -> ../../intel-rapl
98       │   ├──intel-rapl:1:0
105       │   │   ├──device -> ../../intel-rapl:1
113       │   │   ├──subsystem -> ../../../../../../class/power_cap
115       │   ├──intel-rapl:1:1
122       │   │   ├──device -> ../../intel-rapl:1
130       │   │   ├──subsystem -> ../../../../../../class/power_cap
139       │   ├──subsystem -> ../../../../../class/power_cap
144       ├──subsystem -> ../../../../class/power_cap
149 available in Intel® IA-64 and IA-32 Processor Architectures, is used. There is one
150 control type called intel-rapl which contains two power zones, intel-rapl:0 and
151 intel-rapl:1, representing CPU packages.  Each of these power zones contains
152 two subzones, intel-rapl:j:0 and intel-rapl:j:1 (j = 0, 1), representing the
165 	cat /sys/class/power_cap/intel-rapl/intel-rapl:0/name
167 package-0
168 ---------
194 ---------------------
201 	Range of the above energy counter in micro-joules.
207 	Range of the above power value in micro-watts.
216 -----------
243 ---------------------------------------
245 enabled (rw): Enable/Disable controls at zone level or for all zones using
255 control type), either as a top-level power zone or as a subzone of another
262 Detailed API can be generated using kernel-doc on include/linux/powercap.h.