December 2006
Intermediate to advanced
202 pages
8h 29m
English
Content preview from Linux Kernel in a NutshellBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Name
CPU_FREQ — CPU frequency scaling
CPU frequency scaling allows you to change the clock speed of CPUs on the fly. This can save power, because the lower the CPU clock speed, the less power the CPU consumes.
Note that this driver doesn't automatically change the CPU clock speed; you need to either enable a dynamic CPUFreq policy governor (described later) after booting or use a userspace tool.
For details, take a look at Documentation/cpu-freq.
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