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SubjectFwd: [PATCH] cpufreq (7/7): update documentation
----- Forwarded message from Dominik Brodowski <linux@brodo.de> -----

From: Dominik Brodowski <linux@brodo.de>
To: torvalds@transmeta.com
Cc: cpufreq@www.linux.org.uk
Subject: [PATCH] cpufreq (7/7): update documentation
Date: Fri, 7 Mar 2003 11:09:28 +0100

The sysfs directory where the cpufreq-related files are stored changed due
to the new device interface code, so the documentation needs to be updated
accordingly. Also, add some information about the reference counting and the
exporting of sysfs files by the drivers.

Please apply,
Dominik

core.txt | 4 ++++
cpu-drivers.txt | 3 +++
user-guide.txt | 8 ++++----
3 files changed, 11 insertions(+), 4 deletions(-)


diff -ruN linux-original/Documentation/cpu-freq/core.txt linux/Documentation/cpu-freq/core.txt
--- linux-original/Documentation/cpu-freq/core.txt 2003-03-06 19:13:31.000000000 +0100
+++ linux/Documentation/cpu-freq/core.txt 2003-03-06 22:05:27.000000000 +0100
@@ -35,6 +35,10 @@
kernel "constant" loops_per_jiffy is updated on frequency changes
here.

+Reference counting is done by cpufreq_get_cpu and cpufreq_put_cpu,
+which make sure that the cpufreq processor driver is correctly
+registered with the core, and will not be unloaded until
+cpufreq_put_cpu is called.

2. CPUFreq notifiers
====================
diff -ruN linux-original/Documentation/cpu-freq/cpu-drivers.txt linux/Documentation/cpu-freq/cpu-drivers.txt
--- linux-original/Documentation/cpu-freq/cpu-drivers.txt 2003-03-06 19:13:31.000000000 +0100
+++ linux/Documentation/cpu-freq/cpu-drivers.txt 2003-03-06 23:15:39.000000000 +0100
@@ -63,6 +63,9 @@

cpufreq_driver.exit - A pointer to a per-CPU cleanup function.

+cpufreq_driver.attr - A pointer to a NULL-terminated list of
+ "struct freq_attr" which allow to
+ export values to sysfs.


1.2 Per-CPU Initialization
diff -ruN linux-original/Documentation/cpu-freq/user-guide.txt linux/Documentation/cpu-freq/user-guide.txt
--- linux-original/Documentation/cpu-freq/user-guide.txt 2003-03-06 19:13:31.000000000 +0100
+++ linux/Documentation/cpu-freq/user-guide.txt 2003-03-06 22:08:21.000000000 +0100
@@ -114,9 +114,9 @@
------------------------------

The preferred interface is located in the sysfs filesystem. If you
-mounted it at /sys, the cpufreq interface is located in the
-cpu-device directory (e.g. /sys/devices/sys/cpu0/ for the first
-CPU).
+mounted it at /sys, the cpufreq interface is located in a subdirectory
+"cpufreq" within the cpu-device directory
+(e.g. /sys/devices/sys/cpu0/cpufreq/ for the first CPU).

cpuinfo_min_freq : this file shows the minimum operating
frequency the processor can run at(in kHz)
@@ -125,7 +125,7 @@
scaling_driver : this file shows what cpufreq driver is
used to set the frequency on this CPU

-available_scaling_governors : this file shows the CPUfreq governors
+scaling_available_governors : this file shows the CPUfreq governors
available in this kernel. You can see the
currently activated governor in

_______________________________________________
Cpufreq mailing list
Cpufreq@www.linux.org.uk
http://www.linux.org.uk/mailman/listinfo/cpufreq
----- End forwarded message -----
--
Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html

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