Re: [PATCHv3 0/8] Thermal Framework Enhancements

From: Eduardo Valentin
Date: Thu Aug 29 2013 - 15:38:45 EST


Durga,

On 05-02-2013 06:46, Durgadoss R wrote:
> This patch set is a v3 of the previous versions submitted here:
> [v2]: http://lwn.net/Articles/531720/
> [v1]: https://lkml.org/lkml/2012/12/18/108
> [RFC]:https://patchwork.kernel.org/patch/1758921/
>

Long time this work is not moving forward. While writing the device tree
parser, I thought of using your work as baseline to see how the multiple
sensor per zone would look like (also in DT).

But while checking your code again, I realized that you are actually
creating a new API, that is probably why you named it sysfs-api2. While
I understand the motivation (they are pretty different), I believe this
is not a good thing to do. I would suggest making so that we have a
single API.

> This patch set is based on Rui's -next tree, and is
> tested on a Core-i5 and an Atom netbook.
>
> Changes since v2:
> * Reworked the map sysfs attributes in patch [5/8]
> * Dropped configuration for maximum sensors and
> cooling devices, through Kconfig.
> * Added __remove_trip_attr method
> * Renamed __clean_map_entry to __remove_map_entry
> for consistency in naming.
> Changes Since v1:
> * Removed kobject creation for thermal_trip and thermal_map
> nodes as per Greg-KH's comments.
> * Added ABI Documentation under 'testing'.
> * Modified the GET_INDEX macro to be more linux-like, thanks
> to Joe Perches.
> * Added get_[sensor/cdev]_by_name APIs to thermal.h
>
> This series contains 8 patches:
> Patch 1/8: Creates new sensor level APIs
> Patch 2/8: Creates new zone level APIs. The existing tzd structure is
> kept as such for clarity and compatibility purposes.
> Patch 3/8: Creates functions to add/remove a cdev to/from a zone. The
> existing tcd structure need not be modified.
> Patch 4/8: Adds sensorX_trip_[active/passive/hot/critical] sysfs nodes,
> under /sys/class/thermal/zoneY/. This exposes various trip
> points for sensorX present in zoneY.
> Patch 5/8: Adds mapY_* sysfs node. These attributes represent
> the binding relationship between a sensor and a cdev,
> within a zone.
> Patch 6/8: Creates Documentation for the new APIs. A new file is
> created for clarity. Final goal is to merge with the existing
> file or refactor the files, as whatever seems appropriate.
> Patch 7/8: Add ABI documentation for sysfs interfaces introduced in this patch.
> Patch 8/8: A dummy driver that can be used for testing. This is not for merge.
>
> Durgadoss R (8):
> Thermal: Create sensor level APIs
> Thermal: Create zone level APIs
> Thermal: Add APIs to bind cdev to new zone structure
> Thermal: Add trip point sysfs nodes for sensor
> Thermal: Create Thermal map sysfs attributes for a zone
> Thermal: Add Documentation to new APIs
> Thermal: Add ABI Documentation for sysfs interfaces
> Thermal: Dummy driver used for testing
>
> Documentation/ABI/testing/sysfs-class-thermal | 137 ++++
> Documentation/thermal/sysfs-api2.txt | 247 ++++++
> drivers/thermal/Kconfig | 5 +
> drivers/thermal/Makefile | 2 +
> drivers/thermal/thermal_sys.c | 994 +++++++++++++++++++++++++
> drivers/thermal/thermal_test.c | 324 ++++++++
> include/linux/thermal.h | 123 ++-
> 7 files changed, 1831 insertions(+), 1 deletion(-)
> create mode 100644 Documentation/ABI/testing/sysfs-class-thermal
> create mode 100644 Documentation/thermal/sysfs-api2.txt
> create mode 100644 drivers/thermal/thermal_test.c
>


--
You have got to be excited about what you are doing. (L. Lamport)

Eduardo Valentin

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