linux-toradex.git/kernel/pm_qos_params.c, branch v2.6.36.4

PM / PM QoS: Fix reversed min and max

2010-12-09T21:33:18+00:00

commit 00fafcda1773245a5292f953321ec3f0668c8c28 upstream.

pm_qos_get_value had min and max reversed, causing all pm_qos
requests to have no effect.

Signed-off-by: Colin Cross 
Acked-by: mark 
Signed-off-by: Rafael J. Wysocki 
Signed-off-by: Greg Kroah-Hartman

PM QoS: Correct pr_debug() misuse and improve parameter checks

2010-09-10T22:53:05+00:00

Correct some pr_debug() misuse and add a stronger parameter check to
pm_qos_write() for the ASCII hex value case.  Thanks to Dan Carpenter
for pointing out the problem!

Signed-off-by: mark gross 
Signed-off-by: Rafael J. Wysocki

PM QoS: Fix inline documentation.

2010-08-26T18:18:43+00:00

Fix the pm_qos_add_request() kerneldoc comment that doesn't reflect
the behavior of the function after the last PM QoS update.

Signed-off-by: Saravana Kannan 
Acked-by: mark gross 
Signed-off-by: Rafael J. Wysocki

PM QoS: Fix kzalloc() parameters swapped in pm_qos_power_open()

2010-08-24T18:22:18+00:00

sparse spotted that the kzalloc() in pm_qos_power_open() in the
current Linus' git tree had its parameters swapped.  Fix this.

Signed-off-by: David Alan Gilbert 
Acked-by: mark gross 
Signed-off-by: Rafael J. Wysocki

pm_qos: Get rid of the allocation in pm_qos_add_request()

2010-07-19T00:00:34+00:00

All current users of pm_qos_add_request() have the ability to supply
the memory required by the pm_qos routines, so make them do this and
eliminate the kmalloc() with pm_qos_add_request().  This has the
double benefit of making the call never fail and allowing it to be
called from atomic context.

Signed-off-by: James Bottomley 
Signed-off-by: mark gross 
Signed-off-by: Rafael J. Wysocki

pm_qos: Reimplement using plists

2010-07-19T00:00:18+00:00

A lot of the pm_qos extremal value handling is really duplicating what a
priority ordered list does, just in a less efficient fashion.  Simply
redoing the implementation in terms of a plist gets rid of a lot of this
junk (although there are several other strange things that could do with
tidying up, like pm_qos_request_list has to carry the pm_qos_class with
every node, simply because it doesn't get passed in to
pm_qos_update_request even though every caller knows full well what
parameter it's updating).

I think this redo is a win independent of android, so we should do
something like this now.

Signed-off-by: James Bottomley 
Signed-off-by: mark gross 
Signed-off-by: Rafael J. Wysocki

PM: PM QOS update fix

2010-05-16T22:21:03+00:00

This update handles a use case where pm_qos update requests need to
silently fail if the update is being sent to a handle that is NULL.

The problem was that the original pm_qos silently fails when a request
update is passed to a parameter that has not been added to the list yet.
This update restores that behavior.

Signed-off-by: markgross 
Signed-off-by: Rafael J. Wysocki

PM QOS update

2010-05-10T21:08:19+00:00

This patch changes the string based list management to a handle base
implementation to help with the hot path use of pm-qos, it also renames
much of the API to use "request" as opposed to "requirement" that was
used in the initial implementation.  I did this because request more
accurately represents what it actually does.

Also, I added a string based ABI for users wanting to use a string
interface.  So if the user writes 0xDDDDDDDD formatted hex it will be
accepted by the interface.  (someone asked me for it and I don't think
it hurts anything.)

This patch updates some documentation input I got from Randy.

Signed-off-by: markgross 
Signed-off-by: Rafael J. Wysocki

pm_qos: clean up racy global "name" variable

2009-10-14T13:31:10+00:00

"name" is a poor name for a file-global variable.  It was used in three
different functions, with no mutual exclusion.  But it's just a tiny,
temporary string; let's just move it onto the stack in the functions that
need it.  Also use snprintf() just in case.

Signed-off-by: Jonathan Corbet 
LKML-Reference: <20091010153349.113570550@linutronix.de>
Acked-by: Mark Gross 
Reviewed-by: Frederic Weisbecker 
Signed-off-by: Thomas Gleixner

pm_qos: remove BKL

2009-10-14T13:31:10+00:00

pm_qos_power_open got its lock_kernel() calls from the open() pushdown.  A
look at the code shows that the only global resources accessed are
pm_qos_array and "name".  pm_qos_array doesn't change (things pointed to
therein do change, but they are atomics and/or are protected by
pm_qos_lock).  Accesses to "name" are totally unprotected with or without
the BKL; that will be fixed shortly.  The BKL is not helpful here; take it
out.

Signed-off-by: Jonathan Corbet 
LKML-Reference: <20091010153349.071381158@linutronix.de>
Acked-by: Mark Gross 
Reviewed-by: Frederic Weisbecker 
Signed-off-by: Thomas Gleixner