linux-toradex.git/drivers/thermal, branch tegra

thermal: make THERMAL_HWMON implementation fully internal

2011-08-02T18:51:57+00:00

THERMAL_HWMON is implemented inside the thermal_sys driver and has no
effect on drivers implementing thermal zones, so they shouldn't see
anything related to it in .  Making the THERMAL_HWMON
implementation fully internal has two advantages beyond the cleaner
design:

* This avoids rebuilding all thermal drivers if the THERMAL_HWMON
  implementation changes, or if CONFIG_THERMAL_HWMON gets enabled or
  disabled.

* This avoids breaking the thermal kABI in these cases too, which should
  make distributions happy.

The only drawback I can see is slightly higher memory fragmentation, as
the number of kzalloc() calls will increase by one per thermal zone.  But
I doubt it will be a problem in practice, as I've never seen a system with
more than two thermal zones.

Signed-off-by: Jean Delvare 
Cc: Rene Herman 
Acked-by: Guenter Roeck 
Signed-off-by: Andrew Morton 
Signed-off-by: Len Brown

thermal: split hwmon lookup to a separate function

2011-08-02T18:51:41+00:00

We'll soon need to reuse it.

Signed-off-by: Jean Delvare 
Cc: Rene Herman 
Acked-by: Guenter Roeck 
Signed-off-by: Andrew Morton 
Signed-off-by: Len Brown

thermal: hide CONFIG_THERMAL_HWMON

2011-08-02T18:51:25+00:00

It's about time to revert 16d752397301b9 ("thermal: Create
CONFIG_THERMAL_HWMON=n").  Anybody running a kernel >= 2.6.40 would also
be running a recent enough version of lm-sensors.

Actually having CONFIG_THERMAL_HWMON is pretty convenient so instead of
dropping it, we keep it but hide it.

Signed-off-by: Jean Delvare 
Cc: Rene Herman 
Acked-by: Guenter Roeck 
Signed-off-by: Andrew Morton 
Signed-off-by: Len Brown

ACPI:Fix goto flows in thermal-sys

2011-03-23T05:43:44+00:00

This patch fixes two minor bugs in thermal_sys:
(a) The flow of goto's in thermal_hwmon_add_sysfs.
(b) Remove the temp*_crit only if there is a get_crit_temp defined, in
    thermal_remove_hwmon_sysfs.

Signed-off-by: Durgadoss R 
Signed-off-by: Len Brown

ACPI: Fix build for CONFIG_NET unset

2011-03-01T02:00:31+00:00

Several ACPI drivers fail to build if CONFIG_NET is unset, because
they refer to things depending on CONFIG_THERMAL that in turn depends
on CONFIG_NET.  However, CONFIG_THERMAL doesn't really need to depend
on CONFIG_NET, because the only part of it requiring CONFIG_NET is
the netlink interface in thermal_sys.c.

Put the netlink interface in thermal_sys.c under #ifdef CONFIG_NET
and remove the dependency of CONFIG_THERMAL on CONFIG_NET from
drivers/thermal/Kconfig.

Signed-off-by: Rafael J. Wysocki 
Acked-by: Randy Dunlap 
Cc: Ingo Molnar 
Cc: Len Brown 
Cc: Stephen Rothwell 
Cc: Luming Yu 
Cc: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'misc' into release

2011-01-12T10:14:15+00:00

thermal: Add event notification to thermal framework

2011-01-12T05:08:35+00:00

This patch adds event notification support to the generic
thermal sysfs framework in the kernel. The notification is in the
form of a netlink event.

Signed-off-by: R.Durgadoss 
Signed-off-by: Len Brown

thermal: make ops constant

2010-11-30T23:56:23+00:00

And while touching that function definition do something about the disaster
of formatting there.

Signed-off-by: Alan Cox 
Acked-by: Zhang Rui 
Signed-off-by: Len Brown

drivers/thermal/thermal_sys.c: fix 'key f70f4b50 not in .data' in thermal_sys

2010-04-07T15:38:03+00:00

Initialize sysfs attributes before device_create_file call.

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=15548

Signed-off-by: Wolfram Sang 
Signed-off-by: Sergey Senozhatsky 
Cc: "Eric W. Biederman" 
Cc: Greg KH 
Cc: Zhang Rui 
Cc: Len Brown 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30T13:02:32+00:00

percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo 
Guess-its-ok-by: Christoph Lameter 
Cc: Ingo Molnar 
Cc: Lee Schermerhorn