Bug 705146 - processor ACPI not exposed via /proc
Summary: processor ACPI not exposed via /proc
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 15
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-05-16 19:00 UTC by Jon Stanley
Modified: 2011-05-20 17:23 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-05-20 17:23:12 UTC
Type: ---

Attachments (Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

Description Jon Stanley 2011-05-16 19:00:46 UTC 
It would appear that processor ACPI states are not exposed in /proc in 2.6.38.6-26.rc1.fc15.x86_64

# cat /boot/config-2.6.38.6-26.rc1.fc15.x86_64 | fgrep ACPI
<snip>
CONFIG_ACPI_PROCESSOR=y

This is useful to determine if you are incurring c-state related performance penalties or not, and should be in /proc/acpi/processor/CPU<X>/power

Is this a bug, or is there some other place to obtain the same information now?
Comment 1 Jon Stanley 2011-05-16 21:08:23 UTC 
I tried going back to 2.6.38-0.rc8.git0.1.fc15.x86_64 and it's still not there. I'm not exactly sure where this disappeared at.
Comment 2 Chuck Ebbert 2011-05-16 23:42:06 UTC 
If /sys/devices/system/cpu/cpuidle/current_driver is intel_idle then acpi_idle is not being used. Generic stats should always be in /sys/devices/system/cpu/cpu0/cpuidle/* no matter which idle driver is in use.
Note You need to log in before you can comment on or make changes to this bug.