Linux general

General discussion about Linux.

How to make my PCIE ATA storage device running in Linux

Submitted by Evan
on October 13, 2008 - 11:02am

Hi, i am a firmware engineer from PHISON. My team develop a PCIE interface ATA storage device(Called SSD), support Burst-PIO and Bus Master DMA Mode, and can be running in Windows and Mac OS, but it can't running in Linux! i am sure that system can get the device and provice correct BAR address, but Linux don't know it is a storage device, so how can i make it support to running in Linux?

Shared swap partition

Submitted by sbrbot
on October 10, 2008 - 1:31am
Linux

I'm going to create multiple boot environment on my notebook machine (Windows with several Linux distros). Is it good idea to create only one swap partition and share it among all installed linuix distros? I mean the same swap space (partition) will be used as /swap for all installed distros. Could one distro jeopardize another one if they all use this same swap space?

Root password

Submitted by sathya
on October 9, 2008 - 11:46pm
Linux

Hi All,
I want to change my root password permenantly. I have done it by changing the entry of the password file. But its not accepting more then 8 characters. Can any one please mention me , How to increase the length from 8-16 characters ?

USB Driver -- Interrupt Polling -- A Little Help Please

Submitted by GarryHamilton
on October 9, 2008 - 7:44pm
Linux

I'm writing a Linux driver for a set of proprietary USB 2.0 devices.

It is our desire to keep the driver code in user space.

I'm using Daniel Drake's libusb 1.0 (actually 0.9.3 beta) to drive a variety of gadgets. I, myself, am fairly new to USB, so this is the deep end.

How to detect usb device insertioin and removal event ?

Submitted by Anonymous
on October 3, 2008 - 11:05am
Linux

Hi

I need to write a user application that detects Usb device ( disc or printer) insertion and removal

How to achieve that?

Does inotify allow to detect usb device insertion and removal?

Or is there others ways to do that ?

Any comment sis welcome

Getting blinking screen in Fedora 9

Submitted by Anonymous
on October 3, 2008 - 9:14am
Linux

I have linux server with Fedora 9 installed. It was working fine, when i restarted it, its showing booting message and then showing loading page, then its blinking the page. Am not able to see other details.

Quick help will be appreciated.

Thanks

Rajesh

on process space

Submitted by oliver
on October 2, 2008 - 3:27pm
Linux

hi,

I have a few questions I couldn't quite get a handle on it ...

- what is it exactly when people talk about kernel address space? is it physical or virtual, does it refer to the 1G (low memory)?

Block Allocation

Submitted by vineetagarwal
on September 27, 2008 - 10:55am
Linux

hello everybody,

I want to allocate few blocks from a blockgroup in ext2 within a range of offset specified by user. Is it possible of doing so if yes then can someone please explain.As i know balloc.c and ialloc.c are responsible for it and they work on entire file system can i somehow manipulate it for ceratin ranges.

For Ex

How to sync memory files to another node

Submitted by Anonymous
on September 23, 2008 - 9:43pm
Linux

Hi Guys !

Building Kernel Module

Submitted by rizzetti
on September 23, 2008 - 5:24pm
Linux

Hello,

I'm trying compile a external kernel module of a proprietary driver. The makefile build object files, but seems that where Building modules, stage 2 start the headers doesn't found. The output is something like that

....
LD [M] /Linux_PPC/EZpul_k26.o
Building modules, stage 2.
MODPOST 1 modules
WARNING: "__kmalloc" [/Linux_PPC/EZpul_k26.ko] undefined!

epoll in linux

Submitted by Anonymous
on September 21, 2008 - 7:47am
Linux

Hi all,

voice recognition in linux

Submitted by vaali
on September 20, 2008 - 7:17am
Linux

HI everyone.....
i was thinking of developing an application which helps us to login through speech recognition. We shd login when we tell our ligin name and password...i just want to know how to proceed.i have the software swiwngs which converts the speech into text....
My main question is how to proceed do i need to do any thing at kernel level?
pls help me .....

strcmp can i have your msn address please ? I got some questions regarding OS to talk about

Submitted by Anonymous
on September 10, 2008 - 5:14am
Linux

If it is not convenient to post here, pls e-mail me ur msn contact to vemonblade@yahoo.com.sg , Thanks!

device mapper

Submitted by vashist
on September 9, 2008 - 10:21am
Linux

I was going through the linear.txt file of device mapper.It goes like this:-
Source:- lxr - linux/documentation/device-mapper/linear.txt

[[
34#!/usr/bin/perl -w
35# Split a device into 4M chunks and then join them together in reverse order.
36
37my $name = "reverse";
38my $extent_size = 4 * 1024 * 2;
39my $dev = $ARGV[0];
40my $table = "";
41my $count = 0;
42

stderr

Submitted by jelari
on August 31, 2008 - 3:04am
Linux

stdin, stdout is fine for input and output. why there is specific file descriptor for stderr?.. stderr is pretty similar to stdout right?.. or is there any difference?