linux-kernel - [PATCHv4 0/9] Thermal Framework Enhancements

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Date:	Wed,  2 Oct 2013 00:07:59 +0530
From:	Durgadoss R <durgadoss.r@...el.com>
To:	rui.zhang@...el.com, eduardo.valentin@...com,
	linux-pm@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hongbo.zhang@...escale.com,
	wni@...dia.com, Durgadoss R <durgadoss.r@...el.com>
Subject: [PATCHv4 0/9] Thermal Framework Enhancements

This patch set is a v4 of the previous versions submitted here:
[v3]: https://lkml.org/lkml/2013/2/5/228 
[v2]: http://lwn.net/Articles/531720/
[v1]: https://lkml.org/lkml/2012/12/18/108 
[RFC]:https://patchwork.kernel.org/patch/1758921/

This patch set is based on Rui's -next tree, on top
of commit 'f61d5b4d52e077756ce9dbc47ce737da898ad01d'
This is tested on a Core-i5 and an Atom netbook,
running ubuntu 12.04.

Changes since v3:
 * Added a patch to conditionally do kfree(cdev) in
   thermal_release function.
 * Reworked all sysfs attributes to have one value per file
   This includes sensor_trip_* and map_weight* attributes.
 * Added 'lock' variable in thermal_zone structure to
   protect its members.
 * Added Documentation to all functions in thermal_core.c
 * Changes all strcpy() to strlcpy()
 * Used devm_kzalloc() in places where applicable
 * Address some buffer overflow conditions and contentions
   in tz->sensors[] and tz->cdevs[].
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 9 patches:
Patch 1/9: Fixes a kfree issue. This is required so that the new sensor
	   and zone devices are not freed accidently.
	   We can do two things here:
	   1) Conditionally free every device
	   2) Remove this _release function, and free the memory
              in corresponding _unregister functions.
	   I prefer 2) and we can have this as a separate patch
	   outside this series; but would like to see the opinion
	   of maintainers'.
Patch 2/9: Creates new sensor level APIs
Patch 3/9: Creates new zone level APIs. The existing tzd structure is
           kept as such for clarity and compatibility purposes.
Patch 4/9: Creates functions to add/remove a cdev to/from a zone. The
           existing tcd structure need not be modified.
Patch 5/9: 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 6/9: Adds mapY_* sysfs node. These attributes represent
Patch 7/9: 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 8/9: Add ABI documentation for sysfs interfaces introduced in this patch.
Patch 9/9: A dummy driver that can be used for testing. This is not for merge.

Sorry for the long delay in resubmitting this patch set.
Thanks to Eduardo, Wei Ni, for their comments on v3.

Durgadoss R (9):
  Thermal: Check for validity before doing kfree
  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          |  248 +++++
 drivers/thermal/Kconfig                       |    5 +
 drivers/thermal/Makefile                      |    3 +
 drivers/thermal/thermal_core.c                | 1406 +++++++++++++++++++++++--
 drivers/thermal/thermal_test.c                |  322 ++++++
 include/linux/thermal.h                       |  127 ++-
 7 files changed, 2180 insertions(+), 68 deletions(-)
 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

-- 
1.7.9.5

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