linux-toradex.git/drivers/cpufreq/cpufreq_userspace.c, branch v4.2.8

cpufreq / governor: Remove fossil comment

2013-10-17T21:00:20+00:00

cpufreq_set_policy() has been changed to origin __cpufreq_set_policy()
and policy->lock has been converted to rewrite lock by commit 5a01f2.
So remove the comment.

Acked-by: Viresh Kumar 
Signed-off-by: Lan Tianyu 
Signed-off-by: Rafael J. Wysocki

cpufreq: Fix minor formatting issues

2013-06-20T23:06:34+00:00

There were a few noticeable formatting issues in core cpufreq code.
This cleans them up to make code look better.  The changes include:
 - Whitespace cleanup.
 - Rearrangements of code.
 - Multiline comments fixes.
 - Formatting changes to fit 80 columns.

Copyright information in cpufreq.c is also updated to include my name
for 2013.

[rjw: Changelog]
Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

cpufreq: Simplify userspace governor

2013-06-19T00:01:07+00:00

Userspace governor has got more code than what it needs for its
functioning, so simplify it.

Portions of code removed are:
 - Extra header files which aren't required anymore (rearrange them
   as well).
 - cpu_{max|min|cur|set}_freq, as they are always the same as
   policy->{max|min|cur}.
 - userspace_cpufreq_notifier_block as we don't need to set
   cpu_cur_freq anymore.
 - cpus_using_userspace_governor as it was for the notifier code.

Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

cpufreq: Don't check cpu_online(policy->cpu)

2013-02-09T00:18:34+00:00

policy->cpu or cpus in policy->cpus can't be offline anymore. And so we don't
need to check if they are online or not.

Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

cpufreq: Improve debug prints

2012-11-14T23:33:06+00:00

With debug options on, it is difficult to locate cpufreq core's debug prints.
Fix this by prefixing debug prints with KBUILD_MODNAME.

Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

[CPUFREQ] cpufreq:userspace: fix cpu_cur_freq updation

2012-01-06T15:10:53+00:00

CPU frequency is guranteed to be changed on notifier callback with
CPUFREQ_POSTCHANGE. Notifier callback with CPUFREQ_PRECHANGE does
not gurantee a change in frequency; after it, if cpufreq driver is
unable to change CPU to new frequency. This results in wrong
information being fed to user (if setting CPU frequency fails)
upon doing like,

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

Hence in userspace governer update cpu_cur_freq only if notifier
has been called with POSTCHANGE.

Signed-off-by: Afzal Mohammed 
Signed-off-by: Dave Jones

[CPUFREQ] use dynamic debug instead of custom infrastructure

2011-05-04T15:50:57+00:00

With dynamic debug having gained the capability to report debug messages
also during the boot process, it offers a far superior interface for
debug messages than the custom cpufreq infrastructure. As a first step,
remove the old cpufreq_debug_printk() function and replace it with a call
to the generic pr_debug() function.

How can dynamic debug be used on cpufreq? You need a kernel which has
CONFIG_DYNAMIC_DEBUG enabled.

To enabled debugging during runtime, mount debugfs and

$ echo -n 'module cpufreq +p' > /sys/kernel/debug/dynamic_debug/control

for debugging the complete "cpufreq" module. To achieve the same goal during
boot, append

	ddebug_query="module cpufreq +p"

as a boot parameter to the kernel of your choice.

For more detailled instructions, please see
Documentation/dynamic-debug-howto.txt

Signed-off-by: Dominik Brodowski 
Signed-off-by: Dave Jones

[CPUFREQ] checkpatch cleanups for userspace governor

2009-02-25T03:47:30+00:00

Signed-off-by: Dave Jones

[CPUFREQ] Don't export governors for default governor

2008-10-09T17:52:44+00:00

We don't need to export the governors for use as the default governor,
because the default governor will be built-in anyway and we can access
the symbol directly.

This also fixes the following sparse warnings:

drivers/cpufreq/cpufreq_conservative.c:578:25: warning: symbol 'cpufreq_gov_conservative' was not declared. Should it be static?
drivers/cpufreq/cpufreq_ondemand.c:582:25: warning: symbol 'cpufreq_gov_ondemand' was not declared. Should it be static?
drivers/cpufreq/cpufreq_performance.c:39:25: warning: symbol 'cpufreq_gov_performance' was not declared. Should it be static?
drivers/cpufreq/cpufreq_powersave.c:38:25: warning: symbol 'cpufreq_gov_powersave' was not declared. Should it be static?
drivers/cpufreq/cpufreq_userspace.c:190:25: warning: symbol 'cpufreq_gov_userspace' was not declared. Should it be static?

Signed-off-by: Sven Wegener 
Signed-off-by: Dave Jones

NR_CPUS: Replace NR_CPUS in cpufreq userspace routines

2008-07-20T08:21:11+00:00

  * Replace arrays sized by NR_CPUS with percpu variables.

    Prior reference: http://marc.info/?l=linux-kernel&m=120251421825989&w=4
    Subject:    [PATCH 1/4] cpufreq: change cpu freq tables to per_cpu variables
    From:       Mike Travis 
    Date:       2008-02-08 23:37:39

Signed-off-by: Mike Travis 
Signed-off-by: Ingo Molnar