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Old 06-08-2011, 02:04 AM   #1
numan252
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how to determine that loadable kernel module is multithreaded


I want to find out whether a loadable kernel module is multi-threaded or not. Is there any utility or procedure to determine it?
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Old 06-09-2011, 07:39 PM   #2
kbp
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Disclaimer: Not a pro in this area

A multithreaded binary usually needs to provide some sort of locking mechanism - mutexes, semaphores etc

Try this one .. adjust patterns as neccessary (assumes $module is loaded):
Code:
objdump -x $(modinfo $module | grep filename | awk '{ print $2 }') | egrep -i "spin|lock|mutex"
It may be more comprehensive to look/grep through the source for any critical sections.
 
  


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