SUBSYS_SYSTEM_REGIST(9) Device drivers infrastructure SUBSYS_SYSTEM_REGIST(9)NAME
subsys_system_register - register a subsystem at /sys/devices/system/
SYNOPSIS
int subsys_system_register(struct bus_type * subsys, const struct attribute_group ** groups);
ARGUMENTS
subsys
system subsystem
groups
default attributes for the root device
DESCRIPTION
All 'system' subsystems have a /sys/devices/system/<name> root device with the name of the subsystem. The root device can carry subsystem-
wide attributes. All registered devices are below this single root device and are named after the subsystem with a simple enumeration
number appended. The registered devices are not explicitely named; only 'id' in the device needs to be set.
Do not use this interface for anything new, it exists for compatibility with bad ideas only. New subsystems should use plain subsystems;
and add the subsystem-wide attributes should be added to the subsystem directory itself and not some create fake root-device placed in
/sys/devices/system/<name>.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SUBSYS_SYSTEM_REGIST(9)
Check Out this Related Man Page
sys_attrs_cm(5) File Formats Manual sys_attrs_cm(5)NAME
sys_attrs_cm - system attributes for the cm kernel subsystem
DESCRIPTION
This reference page describes attributes for the Configuration Manager (cm) kernel subsystem. See sys_attrs(5) for an introduction to the
topic of system attributes.
Maximum number of subsystems that can set a dependency on a given subsystem.
Default value: 20 (subsystems)
Minimum value: 8
Maximum value: 1024
Do not modify the default setting for this attribute unless instructed to do so by support personnel or by patch kit instructions.
Maximum number of subsystems that can have dependents registered.
Default value: 20 (subsystems)
Minimum value: 8
Maximum value: 1024
Do not modify the default setting for this attribute unless instructed to do so by support personnel or by patch kit instructions.
The maximum number of registered callbacks that are allowed by the kernel at any point in time. If exceeded, register_callback() (a
function used only by kernel components, such as device drivers) receives an error message.
Default value: 341 (callbacks)
Minimum value: 341
Maximum value: 21824
Do not modify the default setting for this attribute unless instructed to do so by support personnel or by patch kit instructions.
SEE ALSO sys_attrs(5)sys_attrs_cm(5)
Hi everyone,
I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX.
Ok onto business, my questions are-:
Was/Is UNIX ever an open source operating system ?
If UNIX was... (21 Replies)
Hello and thanks in advance for any help anyone can offer me
I'm trying to learn the find command and thought I was understanding it... Apparently I was wrong. I was doing compound searches and I started getting weird results with the -size test. I was trying to do a search on a 1G file owned by... (14 Replies)
hi all,
i have installed quota on my centos 7 machine and its what im after (setting size limit on users, so they cant fill the hard drive)
i want to now make this part of my create user script for my sftp server so i want to do a echo and a read command so i capture the limit they enter... (0 Replies)
Hi everybody,
Which Unix base OS have best performance for HOST virtualization?
I tested SmartOS but it needs another OS to connect remotely!
Thanks in advance. (11 Replies)
Hi All,
I need to write a shell script which opens a file and increments the version(text) within the file every time the script runs. For example:
$ cat docker_file.yml
version: '3.1'
services:
ui:
image: repo-srv.dev.io:5000/facebook/ui:0.0.2-QA1
$
So, I would like... (6 Replies)
Dear Team
We use DB2 v10.5 and using DBArtisan tool
Can someone please guide how to convert digits to binary numbers using db2 feature.
Ex> for number 9 , binary should be 1001 ( 8+1)
Any help appreciated. Thanks (2 Replies)
hi folks,
how to using tar with exclude directory and compress it using tar.Z
i only know how to exclude dir only with this command below:
tar -cvf /varios/restore/test.tar -X excludefile.txt /jfma/test1/
how to compress it using 1 command?
Thanx
Please use CODE tags as... (6 Replies)
Quite an obscure question I think.
We have a rebuild process for remote sites that allows us to PXE rebuild a till (actually a PC with a touch screen and various fancy bits) running CentOS. The current CentOS5 tills work just fine with a tar image restore and some personalisation. Sadly,... (4 Replies)
Hello All,
I had recently learnt a bit of Docker(which provides containerization process).
Here are some of my learning points from it.
Let us start first with very basic question:
What is Docker:
Docker is a platform for sysadmins and developers to DEPLOY, DEVELOP and RUN applications ... (7 Replies)
What is the point of this? Whenever I close my shell it appends to the history file without adding this. I have never seen it overwrite my history file.
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend (3 Replies)
Hello... And thanks in advance for any help anyone can offer me
I was trying to work out the differences between displaying modify, access, and change times with the 'ls' command. Everything seems in order when I look at files, but the access time on a directory doesn't seem to change when I... (4 Replies)
Hello everyone,
I am having an issue here with CentOS release 6.6 (Final) that shows all of the space used up, but I can't tell where the space went.
Seemingly I am using up 100%, according to
df -h
Filesystem Size Used Avail Use% Mounted on... (27 Replies)
I'm trying to use a bash script for a psych experiment that involves listening to sound files and responding. If I have something like the code below, how can I make sure that a key press is assigned to RESPONSE only after the second echo statement?
for i in 1 2 3; do
echo "Ready?"
sleep 2
... (10 Replies)
After the success of the jq - tool for parsing and manipulating JSON-Data someone wrote a tool called yq, which aims to be the same for YAML, what jq is for JSON. Seems to work fine. I'll definitely give it a chance in future.
Example YAML-File:
--- !ruby/object:Puppet::Node::Facts
... (1 Reply)
Dear All,
I am very pleased to announce that Dave Munro (gull04) is joining the Moderation Team, after being a very valuable member of UNIX.com for 15+ years.
Dave is an IT Consultant with 30 years of experience this year, has worked in many of the industry vertical market segments and has... (6 Replies)