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Forum: Kernel

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

  1. System Call to block and unblock.

    Hello Everybody. I have a problem with system call. Well , I'm trying to create a system call that blocks(for read and write) an archive(inode) or...

    Started by UserJ, 10-14-2011
    • Replies: 0
    • Views: 734
    10-14-2011 Go to last post
  2. Handling alarm signal in system call implementation

    I am trying to implement a system call in linux that performs a specifc functionality after some seconds have elapsed. For this pupose i use...

    Started by samarf, 10-07-2011
    • Replies: 1
    • Views: 1,058
    10-10-2011 Go to last post
  3. Build Kernel without try and error

    Hi, I have to build an very small kernel. Is it possible to find out which driver do I need to make my hardware run. For example, my hardware...

    Started by clausDieter, 10-06-2011
    • Replies: 1
    • Views: 586
    10-08-2011 Go to last post
  4. Kernel can't find system map

    I get the following warnings on boot: Inspecting /boot/System.map-2.6.35.6 Inspecting /usr/src/linux/System.map Cannot find map file The file in...

    Started by hazel, 10-08-2011
    • Replies: 1
    • Views: 2,301
    10-08-2011 Go to last post
  5. debugging source code

    Hello , I wanted to ask how to debug a source code for eg. kernel source code using gdb, also how to compile one entire directory in linux....

    Started by priya_12345, 10-07-2011
    • Replies: 2
    • Views: 755
    10-08-2011 Go to last post
  6. Wink Kernel Compiling in Details

    i need a description of each step of compiling a linux kernel,for example what changes happen after issuing make modules_install, where can i find...

    Started by s_jmp, 10-03-2011
    • Replies: 5
    • Views: 1,001
    10-05-2011 Go to last post
  7. Lightbulb Idea for a compatibility CPU Layer

    I was wondering why not to develop and make a abstraction layer over CPUs, so the calls to the processor are made by the layer who knows the specific...

    Started by zioMattia, 10-02-2011
    • Replies: 0
    • Views: 409
    10-02-2011 Go to last post
  8. How to read spd data using c code?....

    Hi, Below are the steps to fetch the cas latency from SPD, can anyone tell me how to access SPD so that I can access the memory bytes and fetch...

    Started by knightrider1, 09-29-2011
    • Replies: 0
    • Views: 1,574
    09-29-2011 Go to last post
  9. When will performance be affected?

    Back Ground -------------- I have a program that processes 200 ms of data in 2 seconds. So I am 10 times slower than realtime. If I was to run...

    Started by histrungalot, 09-28-2011
    • Replies: 1
    • Views: 532
    09-28-2011 Go to last post
  10. Use of inode fields for storing encryption key of file

    I am working on inherent kernel functionality for file encryption and decryption ; directory name with some predefined prefix will be automatically...

    Started by paragamritkar, 09-25-2011
    • Replies: 1
    • Views: 807
    09-27-2011 Go to last post
  11. Regarding pci_register_driver() function

    I have been implementing USB driver in kernel 2.4.7. I called pci_register_driver() function inside module_init. The mentioned function always...

    Started by rocky_siva, 09-19-2011
    • Replies: 2
    • Views: 2,415
    09-26-2011 Go to last post
  12. Compiling Linux 2.6.23 copy_user.S error (RTAI patching)

    Hi, I've been spending many hours, over many days searching google/trying to fix this compile error I am getting when I am trying to compile linux...

    Started by viscousflow, 09-17-2011
    • Replies: 1
    • Views: 2,196
    09-25-2011 Go to last post
  13. high load avg

    when i use 3 threads to write disk, the load avg can reach 10, iowait is 80%. the cpu load avg is meaning the queu length of running and waiting...

    Started by apollo860721, 09-20-2011
    • Replies: 1
    • Views: 559
    09-24-2011 Go to last post
  14. Read cas latency of ram using C code or any command

    I want to read cas latency using c code or any other means through which I can use the result to display in my application... I tried installing...

    Started by knightrider1, 09-22-2011
    • Replies: 1
    • Views: 1,145
    09-22-2011 Go to last post
  15. ARM Cortex A9 Core-'1' Execution Sequence

    Hi, Iam using OMAP4430 panda board for my project development. It has ARM Cortex A9 MP Core (CORE-0 & CORE-1) and linux-2.6.38 is used for this....

    Started by tkarthi85, 09-22-2011
    • Replies: 0
    • Views: 709
    09-22-2011 Go to last post
  16. DRM troubles with kernel >=2.6.33

    since 2.6.33 while i turn KMS on all opengl programms is freezing with backtrace like this: ~/workspace/uirs/uirs/build $ gdb `which glxgears`...

    Started by tonn, 09-17-2011
    • Replies: 2
    • Views: 712
    09-21-2011 Go to last post
  17. Wrong command number is received by ioctl

    Hi, I am writing a device driver with an ioctl in driver module. When I execute ioctl from user space and try to access the driver, the command...

    Started by rainbow82, 09-15-2011
    • Replies: 4
    • Views: 1,430
    09-21-2011 Go to last post
  18. Fast LZ decompression

    I know there are different options in the kernel for compression, such as LZO and GZIP. I haven't seen anything about Fast LZ. Does anyone know if...

    Started by GGlaser, 09-20-2011
    • Replies: 0
    • Views: 1,042
    09-20-2011 Go to last post
  19. Error Attaching Device Data :(

    Hi am new to linux.I am trying to load a kernel module but I get a No suck Device error and when I dmesg, I findh the following error.What should I...

    Started by knightraj007, 09-15-2011
    • Replies: 7
    • Views: 1,675
    09-16-2011 Go to last post
  20. insmod: error inserting 'video_server.ko' no such device

    Hi, I am new to Linux, and I have been trying to insert a kernel module that I have complied but I get the following error. ---insmod: error...

    Started by knightraj007, 09-14-2011
    • Replies: 0
    • Views: 1,273
    09-14-2011 Go to last post

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