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Forum: Kernel

Request help with Linux kernel compilation, theory, programming, or other kernel related issues

  1. Does a read-only mmap of a file consume swap space?

    A while back, an mmap() read-only for a file would allocate swap space for that memory area in case there was a need to swap out that data in the...

    Started by bkeller, 01-10-2012
    • Replies: 1
    • Views: 1,095
    01-11-2012 Go to last post
  2. How to get device name

    Hi, How do i find the device name of NAND from /dev of DM355leopard board(2.6.10)? Thanks

    Started by steffi, 01-09-2012
    • Replies: 4
    • Views: 1,533
    01-10-2012 Go to last post
  3. Question Boot freezes with 2.6.35-31 generic-pae on Ubuntu 10.04

    Hello everyone, happy 2012 by the way. I'm using Ubuntu 10.04 and I'm trying to boot kernel 2.6.35-31 generic-pae. Everything seems to go fine...

    Started by tauro_kpo, 01-02-2012
    • Replies: 1
    • Views: 602
    01-10-2012 Go to last post
  4. Getting kernel virtual address from physical address

    I am doing a memmap in kernel command line to reserve RAM fro my module use. Essentially I have a physical address, and I need to get a kernel...

    Started by karanchahal, 01-05-2012
    • Replies: 0
    • Views: 701
    01-05-2012 Go to last post
  5. Help needed to tune linux kernel/network settings

    Hi, We are getting network issue for NFS and memcached in our network. But getting difficulties to diagnose both. We are not getting any logs in...

    Started by mera_linux, 01-04-2012
    • Replies: 0
    • Views: 998
    01-04-2012 Go to last post
  6. Ask a simple question

    I'm reading arch/arm/boot/compressed/head.s, and have a question about the following codes: ARM( mov r0, r0 ) ARM( b 1f ) ...

    Started by elec_mse, 01-01-2012
    • Replies: 2
    • Views: 1,285
    01-02-2012 Go to last post
  7. Problem accessing shared memory on P1022RDK dual core.

    Greetings All, Please excuse me for a 'not very precise' question but I just need some clue or point to look for the trouble. I am running linux...

    Started by farrukh_arshad, 01-02-2012
    • Replies: 0
    • Views: 665
    01-02-2012 Go to last post
  8. Kernel Stack vs User Stack

    Hi, I am new to the kernel development area.I just want to know: 1. What is the difference between user mode stack and kernel mode stack (except...

    Started by saurabhkoar, 01-02-2012
    • Replies: 0
    • Views: 1,113
    01-02-2012 Go to last post
  9. How to add interrupt in gpio driver

    Hi, I am working on DM355 leopard board with kernel 2.6.10 mvl and arm_v5t_le-gcc. I have gpio driver which is working fine but i wanna add...

    Started by steffi, 01-02-2012
    • Replies: 0
    • Views: 673
    01-02-2012 Go to last post
  10. Switch architecture

    I'm still learning about linux so excuse me if this sounds ridiculous. Is there anyway I could compile a 32 bit kernel on my 64 bit Linux Mint? ...

    Started by jonathon6017, 12-28-2011
    • Replies: 4
    • Views: 698
    12-31-2011 Go to last post
  11. fairly kernel strangeness

    hi, I thought the normal linux kernel fairly gave time laps to each processus; but so, how is it possible that it happens Firefox and its plugins to...

    Started by synhedionn, 12-27-2011
    • Replies: 1
    • Views: 573
    12-27-2011 Go to last post
  12. Exclamation Android OS Linux Kernel Programming

    Hello everyone, I am working on a huge project. I learned that Android has Linux as an OS and that it is Linux Kernel. I am seeking advice and...

    Started by scootermanz, 12-27-2011
    • Replies: 2
    • Views: 1,147
    12-27-2011 Go to last post
  13. tty pty issue with centos 4.9

    Hi, I am trying to compile kernel into centos 4.9 OS. The kernel rpm is made, I have successfully installed rpm, rebooted server to the...

    Started by anil510, 12-27-2011
    • Replies: 0
    • Views: 918
    12-27-2011 Go to last post
  14. accessing i2c from within a device driver

    I am writing a device driver that needs access to a certain I2C controller. Is there any way of doing this generic, or should I simply write custom...

    Started by zilog, 12-20-2011
    • Replies: 1
    • Views: 666
    12-26-2011 Go to last post
  15. undefined reference to errno

    I am using errno (global variable) in my socket.c file of the kernel and have also include <bits/errno.h> file and also define Extern int errno in...

    Started by Innovator, 12-26-2011
    • Replies: 1
    • Views: 1,264
    12-26-2011 Go to last post
  16. What is being cached?

    I am trying to time a chunk of code. If I run it from the command line like: taskset -c 0 ./conv Conv Time: 0.014350082 I get a time of ~14ms...

    Started by histrungalot, 12-16-2011
    • Replies: 2
    • Views: 501
    12-16-2011 Go to last post
  17. Question User mode linux kernel erros

    Hi, I'm trying to run user mode linux for the first time. I used ready-made kernel and filesystem from the following

    Started by prakashpu, 12-15-2011
    • Replies: 0
    • Views: 979
    12-15-2011 Go to last post
  18. adding new policy to the kernel

    hi, i'm working on a redhat 8 linux and i want to add new policy for scheduling the processes , and i have no idea where to : 1) define the new...

    Started by mIXpRo, 12-14-2011
    • Replies: 0
    • Views: 1,042
    12-14-2011 Go to last post
  19. Disable ip route caching

    Hello, I use Linux Debian as a router for a school project with Quagga/Zebra. I need to make loadbalancing between routes of the same costs. It...

    Started by vdagost, 12-13-2011
    • Replies: 4
    • Views: 3,260
    12-13-2011 Go to last post
  20. hung_task check should consider if thread is asleep

    Hi, I feel hung_task check should consider and exclude if the thread is asleep for some time and is in uninterruptible state. kernel thread...

    Started by uday_kiran, 12-13-2011
    • Replies: 0
    • Views: 658
    12-13-2011 Go to last post

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