ACPI, cpuidle: Clarify C-state description in sysfs

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Add a new sysfs entry under cpuidle states. desc - can be used by driver to
communicate to userspace any specific information about the state.
This helps in identifying the exact hardware C-states behind the ACPI C-state
definition.

Idea is to export this through powertop, which will help to map the C-state
reported by powertop to actual hardware C-state.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

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Venkatesh Pallipadi 2008-02-11 17:46:31 -08:00 • committed by Len Brown

parent e760e716d4

commit 4fcb2fcd4d

6 changed files with 34 additions and 7 deletions

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11

drivers/acpi/processor_idle.c

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3

drivers/cpuidle/cpuidle.c

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14

drivers/cpuidle/sysfs.c

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