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Forum: Kernel

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

  1. request_firmware times out

    Hi, In a new embedded system we're developing, one of the boards in the system has a DSP which has DDR2, but no flash or EEPROM memory. The DSP...

    Started by jherrin, 07-19-2013
    • Replies: 1
    • Views: 499
    07-20-2013 Go to last post
  2. Angry /proc/sys/vm/flush_mmap_pages missing in 3.9 kernel, how to get it?

    Hi I am using memory mapped files in java which is just a wrapper for the Linux kernel mmap feature, however performance is bad under heavy writes...

    Started by UNDERNET, 07-18-2013
    • Replies: 4
    • Views: 866
    07-20-2013 Go to last post
  3. UART maximum speed

    Hi everybody, does linux support uart baud rate above B4000000? If so how to set it (i.e. if i want to set 10Mps)? My hardware supports up to...

    Started by fdaniii, 07-17-2013
    • Replies: 2
    • Views: 506
    07-18-2013 Go to last post
  4. Netlink multicast

    Hi there! I need assistance with netlink multicast. I have to throw one netlink message from singe userspace application to multiple kernel...

    Started by stream13, 07-16-2013
    • Replies: 0
    • Views: 379
    07-16-2013 Go to last post
  5. Exclamation NOR flash corruption when deleting files on NAND flash for JFFS2 fs

    Hi, I have a mtd partitions on NOR and NAND flash. /proc/mtd mtd0 -- NOR Flash mtd1 -- NOR Flash mtd2 -- NOR Flash mtd3 -- Nand Flash...

    Started by amrut-kulkarni, 07-15-2013
    • Replies: 0
    • Views: 571
    07-15-2013 Go to last post
  6. USB Class driver changes ???

    Hi, Is there any code changes in USB Class driver ,USB Core and USB Host Controller Driver ,when a 4G USB is switched to Modem mode. if there are...

    Started by nitya, 07-10-2013
    • Replies: 0
    • Views: 291
    07-10-2013 Go to last post
  7. Exclamation Multiple "init" in ps command

    I use 2.6.12 kernel. ps command shows 2 init processes. the chile init process have ppid as 1. Why 2 init processes are in list? Is it normal...

    Started by elementm, 03-28-2013
    • Replies: 1
    • Views: 446
    06-29-2013 Go to last post
  8. Kernel Version and RT patch version

    I am wondering the relationship between the kernel version and RT patch version - Latest stable version at kernel.org is "Linux-3.6.8" -...

    Started by jkapcio, 12-03-2012
    • Replies: 1
    • Views: 748
    06-27-2013 Go to last post
  9. CPU frequency files missing in file system

    Hello there What I trying to do is this. I am creating an android application that monitors the CPU activities and judges it by collecting...

    Started by vigneshiscool, 06-25-2013
    • Replies: 1
    • Views: 734
    06-26-2013 Go to last post
  10. kernel-linux-mount

    when file system is in a different medium (like a USB-stick) for which the kernel modules, I can reject the mount process?

    Started by willste8, 06-13-2013
    • Replies: 3
    • Views: 473
    06-22-2013 Go to last post
  11. a pheonomenon related to linux kernel networking

    I encountered a strange problem, my problem is detailed in this link networking - delivering a packet through tun file descriptor leads to...

    Started by esolve, 06-12-2013
    • Replies: 1
    • Views: 318
    06-18-2013 Go to last post
  12. Need to test LDD3 examples

    hi, i am almost fresh in embedded Linux, i want to test LDD3 examples, for that i install fedora 4 in my VM, i am unable to compile the kernel, i...

    Started by sukibeli, 06-18-2013
    • Replies: 0
    • Views: 385
    06-18-2013 Go to last post
  13. Staging platform device probe around pca9548 mux instantiation

    I am writing platform device drivers to handle the creation of I2C devices on pluggable boards in our system. The system is x86 based so device tree...

    Started by tkavanagh, 06-10-2013
    • Replies: 0
    • Views: 665
    06-10-2013 Go to last post
  14. Getting access to a ro MTD

    I've got several embedded linux devices out at customer locations in the field. They can be accessed two ways: A USB to Serial connection SSH ...

    Started by qwertygeek, 05-24-2013
    • Replies: 3
    • Views: 434
    06-09-2013 Go to last post
  15. I2c_del_adapter hangs on wait for completion

    Hello, I'm fairly new to linux kernel development so I apologize for any stupid questions I may ask. I have written an i2c adapter driver, an...

    Started by tkavanagh, 06-04-2013
    • Replies: 2
    • Views: 409
    06-06-2013 Go to last post
  16. Contributing to linux kernel

    Hello, I have a knowledge of Intel X86 Assembly and C languages and I always wanted to contribute to Linux kernel, but it always had been a...

    Started by arnas, 06-04-2013
    • Replies: 3
    • Views: 420
    06-05-2013 Go to last post
  17. How to hook iptable configuration events at the kernel ?

    I'd like to hook the event at the KERNEL when the following command is executed: iptables -A PREROUTING -t nat -i eth0 -j DNAT --to-destination...

    Started by dudigmail, 06-04-2013
    • Replies: 0
    • Views: 274
    06-04-2013 Go to last post
  18. Crypto CBC doesn't send IV.

    Hi, I'm writing a kernel driver for a blkcipher. It does CBC and ciphering at one stage. I can see packets going trough IPSec tunnel, but can't...

    Started by gglowack, 06-04-2013
    • Replies: 0
    • Views: 481
    06-04-2013 Go to last post
  19. Change OS quantum

    Hello, I just would like to ask how I can change OS quantum (time slice) in Linux? For example, smaller value makes context switch be more...

    Started by jeffwang6668, 05-30-2013
    • Replies: 7
    • Views: 488
    06-03-2013 Go to last post
  20. Help with find out if are these memory leaks?

    Hi, I'm developing custom kernel for Android smartphone. I've already made some tweaks and now I want to check if are there any bugs in kernel....

    Started by cnyk, 05-26-2013
    • Replies: 1
    • Views: 323
    06-02-2013 Go to last post

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