Lines Matching refs:the

4 This driver provides an interface to control the P state selection for
6 modes based on the processor model, legacy mode and Hardware P state (HWP)
9 In legacy mode, the Intel P-state implements two internal governors,
10 performance and powersave, that differ from the general cpufreq governors of
11 the same name (the general cpufreq governors implement target(), whereas the
13 performance governor sets the max_perf_pct and min_perf_pct to 100; that is,
14 the governor selects the highest available P state to maximize the performance
15 of the core.  The internal powersave governor selects the appropriate P state
16 based on the current load on the CPU.
18 In HWP mode P state selection is implemented in the processor
19 itself. The driver provides the interfaces between the cpufreq core and
20 the processor to control P state selection based on user preferences
21 and reporting frequency to the cpufreq core.  In this mode the
24 In addition to the interfaces provided by the cpufreq core for
25 controlling frequency the driver provides sysfs files for
29       max_perf_pct: limits the maximum P state that will be requested by
30       the driver stated as a percentage of the available performance. The
31       available (P states) performance may be reduced by the no_turbo
34       min_perf_pct: limits the minimum P state that will be  requested by
35       the driver stated as a percentage of the max (non-turbo)
38       no_turbo: limits the driver to selecting P states below the turbo
41       turbo_pct: displays the percentage of the total performance that
42       is supported by hardware that is in the turbo range.  This number
45       num_pstates: displays the number of pstates that are supported
49 For contemporary Intel processors, the frequency is controlled by the
50 processor itself and the P-states exposed to software are related to
52 frequency is fiction for Intel Core processors. Even if the scaling
53 driver selects a single P state the actual frequency the processor
54 will run at is selected by the processor itself.
57 the internal governor algorythm. These files are located at