lkml.org 
[lkml]   [2017]   [Nov]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [v3, 02/12] Documentation: ABI: Add occ-hwmon driver sysfs documentation
On Mon, Nov 20, 2017 at 05:53:31PM -0600, eajames@linux.vnet.ibm.com wrote:
> From: "Edward A. James" <eajames@us.ibm.com>
>
> Detail the sysfs attributes provided by the occ-hwmon driver.
>

This describes my problem with this driver: All the sysfs attributes
described here are not really hardware monitoring related. A later patch
describes this in more detail:

"The OCC can provide the raw sensor data as well as perform thermal
and power management on the system."

Is it possible to extract the non-hwmon functionality (maybe into an
mfd driver) and limit the hwmon part to just hardware monitoring ?

Guenter


> Signed-off-by: Edward A. James <eajames@us.ibm.com>
> ---
> Documentation/ABI/testing/sysfs-driver-occ-hwmon | 85 ++++++++++++++++++++++++
> 1 file changed, 85 insertions(+)
> create mode 100644 Documentation/ABI/testing/sysfs-driver-occ-hwmon
>
> diff --git a/Documentation/ABI/testing/sysfs-driver-occ-hwmon b/Documentation/ABI/testing/sysfs-driver-occ-hwmon
> new file mode 100644
> index 0000000..8873cc3
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-driver-occ-hwmon
> @@ -0,0 +1,85 @@
> +What: /sys/bus/platform/drivers/occ-hwmon/<dev>/occ_active
> +Date: November 2017
> +KernelVersion: 4.14
> +Contact: eajames@us.ibm.com
> +Description:
> + A read-only attribute that indicates (with a "1" or a "0",
> + respectively) whether or not this OCC is in the "active" state.
> +
> +What: /sys/bus/platform/drivers/occ-hwmon/<dev>/occ_dvfs_ot
> +Date: November 2017
> +KernelVersion: 4.14
> +Contact: eajames@us.ibm.com
> +Description:
> + A read-only attribute that indicates (with a "1" or a "0",
> + respectively) whether or not this OCC has limited the processor
> + frequency due to over-temperature.
> +
> +What: /sys/bus/platform/drivers/occ-hwmon/<dev>/occ_dvfs_power
> +Date: November 2017
> +KernelVersion: 4.14
> +Contact: eajames@us.ibm.com
> +Description:
> + A read-only attribute that indicates (with a "1" or a "0",
> + respectively) whether or not this OCC has limited the processor
> + frequency due to power usage.
> +
> +What: /sys/bus/platform/drivers/occ-hwmon/<dev>/occ_error
> +Date: November 2017
> +KernelVersion: 4.14
> +Contact: eajames@us.ibm.com
> +Description:
> + A read-only attribute that indicates any error condition
> + observed by the OCC or detected by the driver. Reading the
> + attribute will return an integer. A negative integer indicates
> + either an error response from the OCC or bus error or other
> + error condition detected by the driver. A "0" indicates no
> + error.
> +
> +What: /sys/bus/platform/drivers/occ-hwmon/<dev>/occ_master
> +Date: November 2017
> +KernelVersion: 4.14
> +Contact: eajames@us.ibm.com
> +Description:
> + A read-only attribute that indicates (with a "1" or a "0",
> + respectively) whether or not this OCC is the "master" OCC.
> +
> +What: /sys/bus/platform/drivers/occ-hwmon/<dev>/occ_mem_throttle
> +Date: November 2017
> +KernelVersion: 4.14
> +Contact: eajames@us.ibm.com
> +Description:
> + A read-only attribute that indicates (with a "1" or a "0",
> + respectively) whether or not the OCC has throttled memory due
> + to over-temperature.
> +
> +What: /sys/bus/platform/drivers/occ-hwmon/<dev>/occs_present
> +Date: November 2017
> +KernelVersion: 4.14
> +Contact: eajames@us.ibm.com
> +Description:
> + A read-only attribute that indicates the number of OCCs present
> + on the system.
> +
> +What: /sys/bus/platform/drivers/occ-hwmon/<dev>/occ_quick_drop
> +Date: November 2017
> +KernelVersion: 4.14
> +Contact: eajames@us.ibm.com
> +Description:
> + A read-only attribute that indicates (with a "1" or a "0",
> + respectively) whether or not this OCC has asserted the "quick
> + power drop" signal.
> +
> +What: /sys/bus/platform/drivers/occ-hwmon/<dev>/occ_status
> +Date: November 2017
> +KernelVersion: 4.14
> +Contact: eajames@us.ibm.com
> +Description:
> + A read-only attribute that indicates the current OCC state. The
> + value of the attribute will be one of the following states:
> + 0: Reserved
> + 1: Standby
> + 2: Observation
> + 3: Active
> + 4: Safe
> + 5: Characterization

\
 
 \ /
  Last update: 2017-11-22 16:15    [W:0.106 / U:0.304 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site