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Forum: Kernel

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

  1. got struck with device driver calculations orelly book

    Hi in the below code can anybody explain why this calculation is required heilighted in red colour,please dont hesitate to explain i will be happy...

    Started by brahma, 06-02-2008
    • Replies: 3
    • Views: 1,017
    06-03-2008 Go to last post
  2. Reg: sock buffer commited space

    I am trying to get the commited space for a socket.At kernel level it is given by sock->sk->sk_rmem_alloc.Its working fine for TCP,UDP,RAW and...

    Started by mukeshy, 06-02-2008
    • Replies: 0
    • Views: 806
    06-02-2008 Go to last post
  3. multitasking

    I am writing this paper on multitasking in the linux kernel. Can anyone give any pointers??

    Started by lucianvibz, 05-28-2008
    • Replies: 2
    • Views: 966
    06-02-2008 Go to last post
  4. Read this if you have an NVIDIA graphics card

    Hello, If you want to install the shiny new 2.6.25 kernel and you have an NVIDIA graphics card, you might want to take note that, for the time...

    Started by Manchunian, 04-19-2008
    3 Pages
    1 2 3
    • Replies: 21
    • Views: 3,523
    06-02-2008 Go to last post
  5. Rewind in VFS

    Hello, I'm new in this forum I just need some help, In the Linux Kernel's VFS you have vfs_read, vfs_write and vfs_llseek to replace the famous...

    Started by LabakTheOnslaught, 06-02-2008
    • Replies: 0
    • Views: 811
    06-02-2008 Go to last post
  6. How much memory usable to add a new process before paging starts?

    I want to add 1 more large process to my production linux server. Using command like vmstat, free, etc can show RAM used respectively by user apps...

    Started by bababobo, 05-31-2008
    • Replies: 1
    • Views: 878
    06-01-2008 Go to last post
  7. Processor time spent on Network stack

    Dear all, Can anyone help me out in finding the processor time spent on the kernel network stack ? I have a TCP/IP offload Engine...

    Started by matrixkarthik, 05-31-2008
    • Replies: 1
    • Views: 1,439
    05-31-2008 Go to last post
  8. "Error informing the kernal about modifications to /dev/sda16 -- Invalid Argument"

    For some reason I have trouble when partitioning/formating my hard disk in debian. From a Debian live CD gparted gives a message "Error informing...

    Started by BubbaT, 05-31-2008
    • Replies: 0
    • Views: 1,650
    05-31-2008 Go to last post
  9. segment register (segment selector)

    What I would like to know is : 1) how the value of segment register is filled? by who ? my understanding is when compile generates the segments...

    Started by matt_kleviar, 05-31-2008
    • Replies: 0
    • Views: 2,320
    05-31-2008 Go to last post
  10. HDD or motherboard error ?

    Hello, New computer Centos 5.0 with all updates. Kernel version: 2.6.18-8.1.14.el5. Hdd: WD800JD. Show somethnig like below and hanging...

    Started by rutekp, 10-12-2007
    • Replies: 1
    • Views: 23,985
    05-30-2008 Go to last post
  11. mapping struct pages to physical address

    #define virt_to_page(kaddr) (mem_map + (__pa(KADDR) >> PAGE_SHIFT)) 1) why do we need it at te first point ? 2) why does it only talk bout kernel...

    Started by matt_kleviar, 05-28-2008
    • Replies: 2
    • Views: 6,771
    05-29-2008 Go to last post
  12. mem_map

    mem_map stores struct pages for whole physical memory in the system. but actually it is used by only kernel virtual address which are directly...

    Started by matt_kleviar, 05-28-2008
    • Replies: 0
    • Views: 2,181
    05-28-2008 Go to last post
  13. Kernel 2.4.31 issue

    Hi, I am running kernel 2.4.31 on my dsl modem. When some packet is received on the wan interface of modem, it forwards the packet to PC...

    Started by mdua, 05-28-2008
    • Replies: 0
    • Views: 805
    05-28-2008 Go to last post
  14. Questions about skb->nfcache and somthing about netflter?

    Hi everyone: In kernel-2.4, the struct sk_buff has a member“nfcache", when should we use it? I find in kernel 2.6 this variable has been deleted....

    Started by zhoufanking, 05-28-2008
    • Replies: 0
    • Views: 1,020
    05-28-2008 Go to last post
  15. How to understand in_dev_put()and in_dev_get()?

    Hi,everybody! I'm wondering how to understand the in_dev_get() and in_dev_put() functions in "linux/inetdevice.h". What do them mean? Should them...

    Started by zhoufanking, 05-23-2008
    • Replies: 1
    • Views: 3,727
    05-28-2008 Go to last post
  16. getting on with linux kernel

    hello everyone i am new to linux and i am looking to get started with linux kernel. i have currently installed ubuntu 7.10 but i have got dvd of...

    Started by bilal_jan, 05-26-2008
    • Replies: 2
    • Views: 928
    05-26-2008 Go to last post
  17. bluetooth support in initrd

    Hi! I'm working on this idea of mine where I want to extract a key file from my cell phone using bluetooth, this file will then unlock my root...

    Started by sygard, 05-26-2008
    • Replies: 0
    • Views: 1,037
    05-26-2008 Go to last post
  18. device drivers

    1) Do the linux device drivers reside in user space ? 2) if not, then how can they be a part of kernel address space ? 3) how do we integrate...

    Started by matt_kleviar, 05-25-2008
    • Replies: 2
    • Views: 891
    05-26-2008 Go to last post
  19. Understanding linux 0.01

    On a whim I decided to download linux 0.01 from here. My idea was to try to have a read through the code to try to understand how a kernel works. ...

    Started by smolloy, 05-23-2008
    • Replies: 4
    • Views: 3,387
    05-26-2008 Go to last post
  20. vmalloc()

    1) the addressed returned by Vmalloc() is mapped by kernel in user space (user page tables), right ? it is never a part of kernel page table, correct...

    Started by matt_kleviar, 05-25-2008
    • Replies: 0
    • Views: 4,431
    05-25-2008 Go to last post

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