http://bugzilla.kernel.org/show_bug.cgi?id=9704
Summary: ACPI: processor throttling set error
Product: ACPI
Version: 2.5
KernelVersion: 2,6.24-rc6
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Config-Processors
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
CC: [email protected], [EMAIL PROTECTED]
Most recent kernel where this bug did not occur: None
Distribution: FC8
Hardware Environment: All
Software Environment: All
Problem Description:
When echo some invalid values to /proc/acpi/processor/*/throttling,
there isn't any error info returned, on the contray, it sets
throttling value to some T* successfully, obviously, this is incorrect,
a correct way should be to let it fail and return error info.
Steps to reproduce:
[EMAIL PROTECTED] /]# echo "2xxxx" > /proc/acpi/processor/CPU0/throttling
[EMAIL PROTECTED] /]# cat /proc/acpi/processor/CPU0/throttling
state count: 8
active state: T2
state available: T0 to T7
states:
T0: 100%
T1: 87%
*T2: 75%
T3: 62%
T4: 50%
T5: 37%
T6: 25%
T7: 12%
[EMAIL PROTECTED] /]# echo "" > /proc/acpi/processor/CPU0/throttling
[EMAIL PROTECTED] /]# cat /proc/acpi/processor/CPU0/throttling
state count: 8
active state: T0
state available: T0 to T7
states:
*T0: 100%
T1: 87%
T2: 75%
T3: 62%
T4: 50%
T5: 37%
T6: 25%
T7: 12%
[EMAIL PROTECTED] /]# echo "7xxx" > /proc/acpi/processor/CPU0/throttling
[EMAIL PROTECTED] /]# cat /proc/acpi/processor/CPU0/throttling
state count: 8
active state: T7
state available: T0 to T7
states:
T0: 100%
T1: 87%
T2: 75%
T3: 62%
T4: 50%
T5: 37%
T6: 25%
*T7: 12%
[EMAIL PROTECTED] /]#
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