how to determine which interrupts enable and which desable?

Login or Register to Ask a Question and Join Our Community

how to determine which interrupts enable and which desable?

Tags

de, enable, linux

Login to Discuss or Reply to this Discussion in Our Community

Operating Systems Linux how to determine which interrupts enable and which desable?

09-23-2008

Registered User

1, 0

Join Date: Aug 2007

Last Activity: 23 September 2008, 5:08 AM EDT

Posts: 1

Thanks Given: 0

Thanked 0 Times in 0 Posts

how to determine which interrupts enable and which desable?

hi all.

How can i determine which interrupts are enabled in my machine (x86). I mean
how can i access information about this through my pic/apic, or
how can i see, which interrupt enable? Maybe i can do it through /proc, or /sys?
I writing driver and i think, that i incorrect initialize it, but i wanna be sure,
that interrupt can reach cpu and not stuck in my interrupt controller.

I know that there are /proc/interrupts that don't show intr if now int_handler is installed
and /proc/stat, but i need information from my apic controller, interrupt mask...

In dos, as i know, i can access to 0x21 (or 0x20, i'm not familiar with it) and put
there my interrupt mask and then i can be sure, that my interrupt will be reached
to the cpu...

I have x86, linux 2.6.18.

English is not my native language, so sorry for any gramma
and other errors.
Thanks for advice.

Last edited by kolya; 09-23-2008 at 06:08 AM..

kolya

View Public Profile for kolya

Find all posts by kolya

Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. Infrastructure Monitoring

CPU - Interrupts distribution

Hi Gurus, I have a situation runing my ETL tools on the below server. The throughput while processing data is coming very low. When i tried to analyse the CPU stats i got colleceted the mpstat. Server Physical Host Name *********com IP**.***.** OS Type Linux OS Classlinux red hat...

2. Linux

Convert ssRawInterrupts into Interrupts Per Sec

am doing performance monitoring to our server through snmp. i need to convert the interrupts raw value (ssRawInterrupts) in UCD-SNMP-MIB to per sec (Interrupts/Sec). What is the exact formula to find the above one. Guide me please. Thanks in advance.

3. Programming

Getting notified in user-space on interrupts

Hi, I'm working on an AMD opteron running Linux 2.6.28.6 I want to preload a module specific register (MSR) with a value to have it overflow after a number of a specific event counts. As I understand, when the counter in the register overflows, an interrupt will be generated and handled by the...

4. Programming

SIGCHLD interrupts its own handler

Hi. I have a program whose job it is to manage 15 child processes. Sometimes these children die (sometimes deliberately other times with a SEGV). This causes a SIGCHLD to be sent to my program which uses waitpid() in the signal handler to gather information and, in most cases, restart the child....

5. UNIX for Dummies Questions & Answers

about concept of Interrupts.

Hi all, I am new here ,i want to know about interrupts in detail.What r Interrupts .how they r handeled. Thanx in adavnce.

6. UNIX for Dummies Questions & Answers

Traps and Interrupts

Well, I don't know where exactly to ask this doubt so I'm asking in the newbie section. I was reading about traps and interrupts when I thought of traps as something that cease the control of the OS from the user and interrupts that cease the control yet provide support for multitasking. Am I right...

7. UNIX for Advanced & Expert Users

Interrupts problems

Hi, My machine is a Unixware 7.1.3 is a files server, and I had never problem with that machine, but since two days, the machine presents slows problems, i think that the problem is te device interrupts, I had checked all and I dont found it any problem. Any idea? Thanks, (sorry my...

8. UNIX for Dummies Questions & Answers

catching interrupts

hey i have been facing a problem,can you tell me if we can catch ctrl d in unix i have tried and sucessfully catched and disabled ctrl-c and ctrl -z but am not sure if we can do the same for CTRL-D, so got any clue mail on he forum or ...i mean c programming in Unix thats what i am working on

9. Filesystems, Disks and Memory

Does unix use interrupts?

I'm a freshman here and I have a simple question. Does unix use interrupts which is like Dos? Are they the same? Thx.:cool:

Login or Register to Ask a Question