0
votes
1answer
39 views

How to add code into the linux kernel?

I am studying how to analyse and evaluate the TCP/IP protocol stack of Linux. My goal is to study the performance of the tcp/ip protocol stack as a whole, to study the time cost of each layer and ...
0
votes
0answers
266 views

Not enough host controller resources for new device state

I have a debian mint based system where I plug in 16 usb devices. The Kernal is: 3.11.0-12-generic After about 10 or so devices I start to experience problems with connecting new ones. There error ...
0
votes
0answers
20 views

Linux: Keypresses missed when typed, possibly IRQ issues?

I have a strange behavior on a Raspberry Pi, running a buildroot'ed Linux kernel 3.13.5. When the system comes under a little load (eg. mpd is running in the background happily playing out some ...
0
votes
1answer
171 views

Linux: Random kernel oops in mmap functions

For the last month or so I've been getting seemingly random kernel oopses. I've started to notice a pattern: from looking at the traces, the call trace always involves mmap functions. Whenever one of ...
1
vote
0answers
7 views

How to approach searching for sources of interface unresponsiveness

On Debian Linux: On a relatively powerful machine I ran an update and both the kernel and the window manager got updated to newer version. At that point the machine become noticeably less responsive: ...
2
votes
1answer
115 views

How to make Linux reliably boot on multi-cpu machines?

I've got two machines, one with 4x12 AMD Opteron cores (AMD Opteron(tm) Processor 6176), one with 2x8 Xeon cores (HT disabled; Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz). On both machines I experience ...
0
votes
2answers
89 views

Why do linux kernels include files for all devices?

The kernel for my device includes so many files for other devices and situations that my device cannot use. The kernel carries around the files for everything and is much bigger than just the files ...
0
votes
1answer
287 views

Kernel bypass possible with non-specialised NIC?

Is it possible to perform kernel bypass and have a NIC send data to the user space (where I will write my network stack) with no copying, without having to purchase a specialised Solarflare etc NIC?
0
votes
1answer
513 views

Configuring DRAM size when compiling an ARM (linux-sunxi) kernel for an allwinner a10 tablet

I've got a goclever a103 tablet (http://goclever.com/goclever_tab_a103) and I want to install linux on it to boot it from an SD card. First thing I found online were SD card images for a very similar ...
3
votes
1answer
207 views

enabling CONFIG_LIBIPW on kernel compiling

I need to enable CONFIG_LIBIPW=m on kernel 3.4.0 I see that IPW2100, IPW2200, and PCI needs to be enabled, but I could not find any clue where they are on the menuconfig. I read on ...
0
votes
1answer
188 views

Where is my /boot/grub/menu.lst file

I m using VMware for my linux version Ubuntu 11.04 and i have searched for /boot/grub/menu.lst file but this file was not there. Why?? I was creating a new kernel in virtual linux but unable to ...
1
vote
2answers
843 views

In the output of lspci -vv, what do the Region lines mean?

I have the following output from running lspci -vv -s 00:00 on my single board computer running Linux. 07:05.0 RAID bus controller: Adaptec AAC-RAID (Rocket) (rev 03) Subsystem: Adaptec ...
1
vote
1answer
136 views

Raid system fails to boot after moving from 2.6 kernel to 3.5

I'm running Gentoo Linux with a custom compiled kernel and I've just migrated from a 2.6 kernel to a 3.5. As my HD's are on RAID 0 mode I use a custom initrd file in order to be able to boot. While ...
0
votes
0answers
511 views

Get current thread id in kernel based C code (Linux)

I have a module which is accessed for read/write operations to a proc file. I know I can get current process id using current->pid, but is there a way to get the current thread id that is accessing ...
1
vote
1answer
606 views

How can I get the number of threads running in a process from /proc/[pid]/stat in Linux?

I have the pid of the process. I would like to know the current number of thread running in the process. I know I can read /proc/pid/stat for this information, but I'm not sure how to specifically get ...
0
votes
1answer
124 views

in which kernel version CONFIG_IP_NF_MATCH_OWNER appears?

In which kernel version CONFIG_IP_NF_MATCH_OWNER key appears? I dont see it while make mennuconfig on 3.2.28 that I am trying to compile for my ubuntu 12.04 (3.2.0 - default kernel version).
0
votes
1answer
453 views

VMware tools patching - Kernel 2.6.37+ (Slackware 13.37) Graphics Drivers Not Working

Good day, I am using Slackware 13.1 in VMware Fusion 3 (latest) on my OSX10.6 laptop. I recently upgraded my Slackware 13.1 machine which is directly installed on a spare PC to Slackware 13.37, no ...
1
vote
1answer
2k views

“64-bit mode not compiled in” error while compiling Linux kernel

I am building 2.6.18 from CentOS source code. I'm at the last step to the build process in their instructions but seem to be getting an error that I can't understand. Instructions I'm following: ...
2
votes
3answers
854 views

Running linux kernel 0.01 in a virtual machine

I'm just trying to know if is there is a way to run the first version of linux in a virtual machine. Since I am very new to this, my aim is to learn something basic on how the first version of linux ...
0
votes
1answer
647 views

Linux I2C Communication from Kernel Space

How do you interface with the Linux I2C driver from kernel space? For example, if I had LEDs connected to a GPIO expander on the I2C bus, how would I blink them twice before going down for reset from ...
0
votes
1answer
239 views

Exec Shield patch

The Exec Shield patch was removed from the Debian repositories a few months ago. Where can I download the patch ? I found this link but files are from 2006: Ingo Molnar link
4
votes
3answers
495 views

Pipe kernel messages to another process as they occur

I have an OLED screen on my laptop that I have configured to show status information. The current driver I have installed in Linux for it is able to display messages by sending them to a script as an ...
4
votes
1answer
528 views

Where did SELinux go?

I am compiling a new kernel, and want to enable SELinux but don't see it in menuconfig anywhere. The only framework under security options is Tomoyo.....so I ask, what happened to SELinux? Both ...
0
votes
1answer
336 views

WLAN LED randomly blinking when there is no traffic

I've got a Linksys WUSB54GC WLAN USB interface (Ralink chipset) and I'm running Debian GNU/Linux 6.0. The LED very often randomly blinks although there is no traffic in the network. I checked this ...
0
votes
1answer
419 views

Interrupt Descriptor Table and System Call Table?

Anyone please help me find out the relation between these two. Read somewhere that "The IDT is initialized one first time by the BIOS routine but Linux does it one more time when it take control." ...
0
votes
1answer
2k views

What do these error messages mean and how to fix it?

============================================================== actually I figured out this is an issue of intel video driver:http://lkml.indiana.edu/hypermail/linux/kernel/0902.3/01703.html ...
0
votes
2answers
808 views

How do I REbuild OpenSuse kernels?

I am trying to install some patches and drivers needed for a wifi card, but im getting an error that says: "build your kernel with CONFIG_LIBIPW=m." How can I recompile the kernel to add that? And ...
1
vote
1answer
107 views

kernel compilation failure [Ubuntu Lucid]

I'm a newbie Linux/Ubuntu user. And I tried to compile a kernel as my Dell Studio 1555 laptop cannot be hibernated due to ATI open source graphic driver bug. So, I had to compile a kernel version ...