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Forum: Kernel

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

  1. Probable overhead of using a shared library

    Hi, I found a very strange thing when I linked my executable with a shared library. That is the executable only references a small function of the...

    Started by Dongping84, 05-25-2010
    • Replies: 5
    • Views: 2,426
    05-26-2010 Go to last post
  2. Question lookup_bdev function ,

    Hi, i'm trying to write a code, which checks if a block device exists or not. I wrote the following code #include <linux/kernel.h> #include...

    Started by Dufresne, 05-26-2010
    • Replies: 0
    • Views: 1,700
    05-26-2010 Go to last post
  3. Help with Netlink kernel changes

    I'm in the process of porting my kernel module from a 2.6.10 kernel to a 2.6.25.5 kernel. I thought it would be fairly simple until I hit the netlink...

    Started by bobb8915, 11-25-2008
    • Replies: 1
    • Views: 1,340
    05-24-2010 Go to last post
  4. Сipher and deciphering files in kernel

    Hello. I want to make a transparent ciphering of files in kernel space. Some file on disk may by ciphered but with help of my kernel module when...

    Started by TheProger, 05-23-2010
    • Replies: 1
    • Views: 756
    05-24-2010 Go to last post
  5. How read/write requests are dispatched to the ramdisk driver

    Hi, I am trying to measure the performance of ramdisk (size is 2GB) on a Nehalem based system (with CentOS5.4) with 4GRam. It looks like I get...

    Started by ramu_oc, 05-19-2010
    • Replies: 3
    • Views: 1,163
    05-22-2010 Go to last post
  6. Question Kernel Module - Packet Capture/Send And Packet Creation/Send

    Hi, I am currently working on a kernel module that uses a netfilter hook on out-going packets from the machine. I can currently load the module...

    Started by tyman475, 05-20-2010
    • Replies: 0
    • Views: 3,295
    05-20-2010 Go to last post
  7. How to assign kernel space to user space

    Hi, recently I have come across a question, how can we allocate a part of kernel space to user space. I have understood that we have use mmap()...

    Started by maheshgupta024, 05-20-2010
    • Replies: 0
    • Views: 738
    05-20-2010 Go to last post
  8. kernel stopped sending network packets after first one..

    Hi all I've issue where Kernel stopped sending network packets to driver after very first one, I'm sure its something I've done or not done in...

    Started by ayewin, 05-19-2010
    • Replies: 1
    • Views: 925
    05-19-2010 Go to last post
  9. problem: kdump and kexec

    I have spent about 7 days to find out that the crash reports is stored in /var/crash for Ubuntu. So now I don't think Ubuntu is suitable for me to...

    Started by wolaile, 05-17-2010
    • Replies: 2
    • Views: 1,180
    05-18-2010 Go to last post
  10. Kernel crashed, but no oops information!

    I have tried for several days, and I have googled hard, but I can't find the results. So now let me describe my problem as follows: I have...

    Started by wolaile, 05-16-2010
    2 Pages
    1 2
    • Replies: 12
    • Views: 2,602
    05-18-2010 Go to last post
  11. Registering with the USB HID CLASS Driver

    Hi All, I've a typical requirement for presenter hid device. ============= User Space ____________________________

    Started by sunilpillai_stg, 05-17-2010
    • Replies: 0
    • Views: 2,173
    05-17-2010 Go to last post
  12. Declare_wait_queue_head

    Hi, In my driver, I am using DECLARE_WAIT_QUEUE_HEAD to create a wait queue and static DECLARE_WORK(io_work, io_read); to declare work queue. ...

    Started by charlie_arya, 05-17-2010
    • Replies: 0
    • Views: 1,882
    05-17-2010 Go to last post
  13. segment register

    what is significance of segment register? does the linux kernel update this register during context switch? please reply...

    Started by arunalapati, 05-17-2010
    • Replies: 0
    • Views: 1,072
    05-17-2010 Go to last post
  14. timing on the kernel question

    Hey, 2 questions which are kinda related: 1) Are there any functions that give the utime and stime in the task_struct for a specific thread? 2)...

    Started by blah32, 05-16-2010
    • Replies: 0
    • Views: 658
    05-16-2010 Go to last post
  15. printing call stack of user thread

    Hi, Is there any way to print the user stack of the thread which is getting killed ? What i\I want to do is following: 1. Send a Kill signal to...

    Started by biswarup, 05-13-2010
    • Replies: 6
    • Views: 8,397
    05-15-2010 Go to last post
  16. ptrace self & child threads by choice

    I have a very specific requirement. I need to monitor a live process & get the stack of "some" of the threads belonging to my process (from the...

    Started by calvin_kp, 05-15-2010
    • Replies: 0
    • Views: 1,726
    05-15-2010 Go to last post
  17. Question USB stops serial port from working correctly

    Hi I am using linux 2.6.20 from ltib-mpc8313erdb-20070824 on my development board having MPC8313 powerpc processor. Whenever I plug-in the USB...

    Started by charlie_arya, 05-13-2010
    • Replies: 2
    • Views: 1,146
    05-14-2010 Go to last post
  18. low performance issue with 2.6.32.9

    Hi I am running Linux 2.6.32.9 on MPC8313E powerpc. I ahve upgraded this from 2.6.29 and with this kernel it was working fine. But with the...

    Started by charlie_arya, 05-10-2010
    • Replies: 6
    • Views: 1,717
    05-13-2010 Go to last post
  19. Question insmod error

    hi all, I am porting my driver as a module in linux 2.6. when i insert the module by giving insmod . I am getting this message. ...

    Started by vidya, 05-07-2010
    2 Pages
    1 2
    • Replies: 10
    • Views: 5,770
    05-12-2010 Go to last post
  20. Kernel Panic

    I have written a Linux kernel module (in Linux 2.4, Red Hat 9) which does the followings: It takes srcIP, sourceport, destIP, destport...

    Started by divyashree, 05-12-2010
    • Replies: 1
    • Views: 754
    05-12-2010 Go to last post

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