diff options
Diffstat (limited to 'drivers/cpufreq/Kconfig')
-rw-r--r-- | drivers/cpufreq/Kconfig | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index 95882bb1950e..60c9be99c6d9 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig | |||
@@ -46,6 +46,10 @@ config CPU_FREQ_STAT_DETAILS | |||
46 | This will show detail CPU frequency translation table in sysfs file | 46 | This will show detail CPU frequency translation table in sysfs file |
47 | system | 47 | system |
48 | 48 | ||
49 | # Note that it is not currently possible to set the other governors (such as ondemand) | ||
50 | # as the default, since if they fail to initialise, cpufreq will be | ||
51 | # left in an undefined state. | ||
52 | |||
49 | choice | 53 | choice |
50 | prompt "Default CPUFreq governor" | 54 | prompt "Default CPUFreq governor" |
51 | default CPU_FREQ_DEFAULT_GOV_USERSPACE if CPU_FREQ_SA1100 || CPU_FREQ_SA1110 | 55 | default CPU_FREQ_DEFAULT_GOV_USERSPACE if CPU_FREQ_SA1100 || CPU_FREQ_SA1110 |
@@ -115,4 +119,24 @@ config CPU_FREQ_GOV_ONDEMAND | |||
115 | 119 | ||
116 | If in doubt, say N. | 120 | If in doubt, say N. |
117 | 121 | ||
122 | config CPU_FREQ_GOV_CONSERVATIVE | ||
123 | tristate "'conservative' cpufreq governor" | ||
124 | depends on CPU_FREQ | ||
125 | help | ||
126 | 'conservative' - this driver is rather similar to the 'ondemand' | ||
127 | governor both in its source code and its purpose, the difference is | ||
128 | its optimisation for better suitability in a battery powered | ||
129 | environment. The frequency is gracefully increased and decreased | ||
130 | rather than jumping to 100% when speed is required. | ||
131 | |||
132 | If you have a desktop machine then you should really be considering | ||
133 | the 'ondemand' governor instead, however if you are using a laptop, | ||
134 | PDA or even an AMD64 based computer (due to the unacceptable | ||
135 | step-by-step latency issues between the minimum and maximum frequency | ||
136 | transitions in the CPU) you will probably want to use this governor. | ||
137 | |||
138 | For details, take a look at linux/Documentation/cpu-freq. | ||
139 | |||
140 | If in doubt, say N. | ||
141 | |||
118 | endif # CPU_FREQ | 142 | endif # CPU_FREQ |