Linux kernel

Discussion about the Linux kernel.

sctp notification.

Submitted by kvsn
on January 2, 2009 - 2:31am

Hi,
What notification will the application get or the stack returns if the SCTP association goes down due to the interface down ?

about linux networking stack

Submitted by Anonymous
on January 1, 2009 - 11:58am
Linux

Hi all,

Can any one comment on the pros and cons of using multi-thread producer and consumer model to implement Linux networking stack? For example, IP protocol handler runs in a thread, that reads from the output from arp protocol (another thread), the same thing for TCP and UDP protocol.

Fork Bombs

Submitted by arunjoseph
on December 31, 2008 - 8:44am
Linux

I would like to know whether there is any mechanisms in linux kernel to prevent fork bombs.

Device mapper plugin

Submitted by shady_Dev
on December 31, 2008 - 8:04am
Linux

Hi,
I m a final year computer Engineering student and i have started working on the idea of developing a dmcache an idea suggested by Rik Van Riel on kernelnewbies.org website.
Plz follow the link:
http://www.kernelnewbies.org/KernelProjects/DmCache

I have seen the kernel space source code for the device mapper and i have divided the project in ot the following modules:

Error: Unknown symbol leds_list

Submitted by beparas
on December 31, 2008 - 5:06am
Linux

Hello Friends,
I wanted to use led-class function in led driver (/linux-2.6.20/drivers/leds/led-class.c) as a module.
I am working on Kernel 2.6.20.
I wanted to insert this module on Fresscale Board.
I Compiled this as a module using LTIB utility, given with Board.
At the time of kernel configuration, I chose LED Class Support as a Module.

macvlan: not entirely behaving like a phys dev: Bug?

Submitted by Anonymous
on December 29, 2008 - 6:37am
Linux

Hi everybody

I'm testing the macvlan module for a while now on a Debain Etch server. I am using it for obtaining 4 dynamic ip-addresses from my ISP on one singel machine (on one nic).

asus-laptop is not finding my eee acpi?

Submitted by waltercool
on December 28, 2008 - 8:16am
Linux

Hi there to all.

I have an EeePC, on EeePC with kernel 2.6.27, asus-laptop works fine, i only need to patch my kernel for avoid the acpi lag.

Now, i have compiled 2.6.28 with my same conf. (i have disabled some new features) and, when i do a modprobe asus-laptop, i get that response: No such device.

PCI: Error while updating region 0000:00:1f.5/5 (80000800 != 00000801)

Submitted by mmh
on December 27, 2008 - 1:15pm
Linux

Hi. I using kernel 2.6.24.5 and a patch to quirk to ahci mode. dmesg shows the following error:
PCI: Error while updating region 0000:00:1f.5/5 (80000800 != 00000801)

I think that it is a resource allocation issue.
I attach the entire dmesg and lspci.

Can anybody help me?

problem in adding a system call into linux 2.6 kernel

Submitted by knewb
on December 27, 2008 - 11:25am
Linux

Hi,
I am a newbie to the kernel. Am writing a kernel module to add a system call to linux 2.6 kernel. I found the address of the system call table as follows:

All the include files will go here....

#define CLOAK_SYSCALL_NUMBER 223 /*verified that this is
unused */

void **sys_call_table;

unsigned long **find_sys_call_table(void) {

composite out

Submitted by Anusha
on December 25, 2008 - 10:20pm
Linux

hi,
I am working on omap3evm,composite out will give black and white images ..how to get colored images using composite out?

thank you

Issue with PS/2 Keyboard driver

Submitted by Rathi
on December 24, 2008 - 2:59am
Linux

Hi,

I am presently working on AX4510 board which has PS2 interface for Keyboard.
This is Samsung based ARM processor,need to know how to go about making the keyboard functional.
The keyboard Data pin and clock output are connected to I/O ports of the processor

can any one which all files to modified in Linux 2.6.x kernel.

Thanks in Advance

kernel size

Submitted by Anonymous
on December 20, 2008 - 11:07pm
Linux

anyone has full details about sizes(in MB) of linux kernels?

Writing to disk less often and/or changing I/O scheduler for "write heavy" system

Submitted by Anonymous
on December 20, 2008 - 10:01am
Linux

Hi,

I was wondering how to improve the situation on a system
which performs a lot of disk writes. It's a (graphing)
monitoring system and it is constantly updating data on
disk as per the information gathered from the other nodes,
to the extent that the disk usage on this system is causing
latencies.

I was thinking that, if data was to sit in memory for, say,

linux kernel version that uses timeouts to manage disk power consumption

Submitted by Anonymous
on December 20, 2008 - 12:01am
Linux

Hi,

Can someone please let me know the

(1) linux kernel version that uses timeouts to manage disk power consumption.
(2) do we need to use hdparm to set these timeout values in the kernel ?

Thanks
rufus

Writing RFS to flash

Submitted by cjjoy1980
on December 19, 2008 - 6:58pm
Linux

Hi,
I am trying to port RFS into my embedded board. The board has the Nand flash and file system used is JFFS2. During booting I can see the following error:
"Warning: unable to open an initial console"
On googling I found, this error is caused due the file system not properly written on to flash. The way I am writing linux files to flash is as follows: