From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 9 Mar 2003 14:28:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 9 Mar 2003 14:27:00 -0500 Received: from caramon.arm.linux.org.uk ([212.18.232.186]:37394 "EHLO caramon.arm.linux.org.uk") by vger.kernel.org with ESMTP id ; Sun, 9 Mar 2003 14:26:19 -0500 Date: Sun, 9 Mar 2003 19:36:56 +0000 From: Russell King To: Linux Kernel List Subject: Fwd: [PATCH] cpufreq (7/7): update documentation Message-ID: <20030309193656.H26266@flint.arm.linux.org.uk> Mail-Followup-To: Linux Kernel List Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org ----- Forwarded message from Dominik Brodowski ----- From: Dominik Brodowski 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