Everything about UNIX kernels: development, configuration, compilation, design, etc.
2
votes
0answers
27 views
Making a recovery partition in embedded Linux
I have an Atmel SAM9X system running Angstrom. I am trying to make a recovery partition so when a user holds a button during boot up the recovery partition boots up.
I have modified the bootstrap so ...
6
votes
1answer
54 views
How can I mount filesystems with > 4KB block sizes?
I have a 3TB hard disk pulled out of a WD Mybook Live NAS. The partition table is as follows:
Model: ATA WDC WD30EZRS-11J (scsi)
Disk /dev/sdb: 3001GB
Sector size (logical/physical): 512B/4096B
...
1
vote
2answers
38 views
Does linux modules/drivers belong to kernal space or user space
Some articles say that modules/drivers belong to kernel space as it take part in forming the kernel; (reference: http://www.freesoftwaremagazine.com/articles/drivers_linux)
While others say that ...
0
votes
1answer
23 views
ixgbe: increase rx performance
I have an Intel 82598EB 10GBE NIC.
I need to receive traffic without packet loss.
Data rate is 4-5 Gbps, packet size is 1500-9600 bytes.
I had already configured smb and irq affinity.
I also tried ...
0
votes
0answers
33 views
microphones on apple macbookair1,1
I'm running linux ubuntu 12,04 on a mba. I can't make the microphones (neither external nor internal) work.
Speaking with some wise guys, it seems there is a problem with linux kernel trying to ...
0
votes
0answers
15 views
PID Grabbing Via LSM Hooks
I am grabbing the LSM hooks in my own created module and showing into the securityfs psuedo filesystem which is showing correctly.
The path where these hooks are showing is
...
3
votes
1answer
41 views
How to measure the clock pulse of my computer manually?
My PC has two processors, and I know that each one runs at 1.86 GHz. I have just read about clock cycles and I only have a (very) rough understanding, so I apologize beforehand if my question is so ...
0
votes
0answers
22 views
ARM Linux Page Table Entry format — unused bits? [migrated]
I need to use two bits of the PTE to store a custom "state" value that my kernel module will use when intercepting page protection faults.
I am developing on a Galaxy Nexus which has an ARM Cortex ...
0
votes
1answer
33 views
Enable kernel module for VPN
I'm trying to turn on modules for VPN so I followed this tutorial to compile new ubuntu kernel 3.8.6 .
But the features I've turned on using make menuconfig seem not to be enabled.
(the features I ...
0
votes
0answers
12 views
Kernel module with included local sources [migrated]
Say I have the following structure:
.\
|_ foo.c
|_ inc\
|_ foo_helper.c
|_ foo_helper.h
I want to obtain foo.ko. foo.c should #include <foo_helper.h>. Also, a debug message with ...
2
votes
2answers
82 views
what is pts/0 and (:0.0) in linux by type who am i
When I type the command:
[root@degeneration Desktop]# who am i
root pts/0 2013-04-12 15:08 (:0.0)
What is pts/0 and what is meant by (:0.0)?
0
votes
2answers
23 views
can't update with this error messg
I got this message:
not enough free disk space.... The upgrade needs a total of 31.8 M
free space on disk '/boot'. Please free at least an additional 31.8 M
of disk space on '/boot'. Empty ...
10
votes
1answer
135 views
Can entropy consumption at program start be prevented?
I use Knoppix (or other Live CDs/DVDs) as a secure environment for creating valuable crypto keys. Unfortunately entropy is a limited resource in such environments. I just noticed that each program ...
0
votes
2answers
89 views
What are “kernel data structures”?
While reading about the Linux kernel I came across the notion of kernel data structures. I tried to find more information via Google, but couldn't find anything.
What are kernel data structures?
...
2
votes
1answer
68 views
Would someone please explain lspci -vv output?
I have the following output from running lspci -vv -s 00:00 on my single board computer running linux.
07:05.0 RAID bus controller: Adaptec AAC-RAID (Rocket) (rev 03)
Subsystem: Adaptec ASR-2230S + ...
