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Forum: Kernel

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

  1. Call User-space Program function from Kernel Module

    Hi, I want to call some functions of a user space program from a kernel module. I cannot obviously put the code of the user space program in the...

    Started by shivanu, 03-05-2005
    • Replies: 6
    • Views: 6,135
    08-31-2012 Go to last post
  2. [SOLVED] Problems with JFFS2 on MCS8144

    Hi I'm working on a project using an MCS8144. I have built the kernel and flash filing system binaries, and if I load them onto an evaluation...

    Started by AJEllisuk, 08-22-2012
    • Replies: 1
    • Views: 612
    08-28-2012 Go to last post
  3. Exclamation Getting Kernel Panic (MAY be related to wireless but not sure)

    Running Backtrack Linux R3 here, but this problem has been happening for a long time now. I get a kernel panic when I boot and no network...

    Started by Fishbone_Beat, 08-26-2012
    • Replies: 3
    • Views: 654
    08-28-2012 Go to last post
  4. Shared memory

    Are there features that the kernel provides for user processes to start sharing their memories during runtime that can avoid a kernel copy for...

    Started by akshayFarcry, 03-08-2012
    • Replies: 1
    • Views: 680
    08-28-2012 Go to last post
  5. [SOLVED] Dual Core AMP Linux shared memory possibility

    Hello There, We are working on a Marvel ARM Dual AMP core CPU that runs Linux. Both core running Linux using one DDR chip but using different...

    Started by shahradp, 08-12-2012
    • Replies: 1
    • Views: 815
    08-27-2012 Go to last post
  6. Error during compiling kernel (Werror=unused-but-set-variable)

    hi all I was trying to compile a kernel for my android phone then I got this: scripts/kconfig/conf -s arch/arm/Kconfig CHK ...

    Started by amin021023, 08-23-2012
    2 Pages
    1 2
    • Replies: 16
    • Views: 4,375
    08-27-2012 Go to last post
  7. [SOLVED] Driver compiling in 3.5.2

    I am moving a driver from 3.1.2 to latest stabe (3.5.2). The driver gets compiled in 3.1.2 but throws errors in the latest one. Any help is...

    Started by prashanth_s, 08-24-2012
    • Replies: 1
    • Views: 3,003
    08-27-2012 Go to last post
  8. Compile Kernel 3.5.2 on Ubuntu 12.04 with Kernel 3.2.0-29-generic-pae?

    Hi, all: A naive question: First, my environment: Ubuntu 12.04, with kernel 3.2.0-29-generic-pae peijia:~$ uname -a Linux peijia...

    Started by jiapei100, 08-23-2012
    • Replies: 1
    • Views: 2,664
    08-26-2012 Go to last post
  9. attach preempt_notifier to user process in linux

    I am needing to identify whether a user process was ever preempted somehow, I understand we have hooks in preempt.h and sched.c which allow us to...

    Started by maheshma, 08-14-2012
    • Replies: 3
    • Views: 639
    08-25-2012 Go to last post
  10. The performance governor for cpufreq doesn't seem to behave as adverti

    The kernel in use: 3.2.0-23-generic on Ubuntu 12.04LTS For example, I issue the following command: sudo cpufreq-set -c 0 -g performance Then I...

    Started by mgoldshteyn, 08-23-2012
    • Replies: 0
    • Views: 529
    08-23-2012 Go to last post
  11. Linux on QEMU stucks at "Uncompressing Linux... done, booting the ker"

    I built linux kernel and 2.6.38 image using armtool chain 2011 and tried to run it on qemu 15.0. I took root file system from...

    Started by rupeshkp, 08-22-2012
    • Replies: 0
    • Views: 953
    08-22-2012 Go to last post
  12. Confused about semaphores

    Hi, I am trying to allow a kernel thread to sleep while it waits for a buffered write to complete. Essentially I was trying: Created a: ...

    Started by rjmarshall17, 08-20-2012
    • Replies: 2
    • Views: 493
    08-20-2012 Go to last post
  13. Question Update first before compiling a new kernel?

    Hi, Tried to search but can't easily find the answer, maybe this has been asked before. Current kernel is 2.6.18, planning to compile to the...

    Started by htan68, 08-17-2012
    • Replies: 1
    • Views: 433
    08-17-2012 Go to last post
  14. multiple independant multicast routing instances

    I worte a multicast proxy (mcproxy -, some time ago. The Proxy is using the Linux Kernel routing tables and supports multiple...

    Started by Aufgang001, 08-08-2012
    • Replies: 3
    • Views: 1,090
    08-16-2012 Go to last post
  15. [SOLVED] Using msgctl() function in the kernel side

    Hello, I have already used the function msgctl() in user space without any problem, in order to obtain the number of messages in queue from its ID...

    Started by droms, 07-30-2012
    • Replies: 8
    • Views: 761
    08-15-2012 Go to last post
  16. system programming

    Hi I have some ideas about cpu scheduler program and I want to implement my own , but I dont know how to change its codes . 1 ) where can I find...

    Started by ajansketab, 08-15-2012
    • Replies: 1
    • Views: 519
    08-15-2012 Go to last post
  17. Wink wraplinux-build kernel error

    :confused: Hi everyone, I want to build a 2.6.18-rc2 kernel iamge by wraplinux. I make the bzImage; and make the initramfs.cpio.gz rootfs. But...

    Started by hanxiaodong, 08-14-2012
    • Replies: 1
    • Views: 530
    08-15-2012 Go to last post
  18. Blank Shadow File

    While trying telnet I got error message "no valid shadow password" I am using BusyBox v1.00 and giving command #cd etc && cat shadow I...

    Started by mjmatrix, 08-11-2012
    • Replies: 3
    • Views: 817
    08-12-2012 Go to last post
  19. Kernel/Why do i get Unhandled fault: imprecise external abort?

    I have this in kernel module: /*global scope declared*/ static char array={1,2,3,4,5,6,7,8,9,10}; and I have functions for open...

    Started by zozo1234, 08-08-2012
    • Replies: 2
    • Views: 1,895
    08-12-2012 Go to last post
  20. Issue with allocating dma memory pool on ppc 476

    Hi, I am fairly new to Linux device driver development and I am working on porting a device driver written for red hat Linux to work on Linux...

    Started by ankurm, 08-08-2012
    • Replies: 1
    • Views: 623
    08-11-2012 Go to last post

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