We cannot sleep in interrupt context so semaphores and mutex can't be

Can we use semaphore or mutex or spin lock in interrupt
context in linux kernel ?

Question Posted / achilles

Answer Posted / achilles

We cannot sleep in interrupt context so semaphores and mutex
can't be used.
Spinlocks can be used for locking in interrupt context.

Is This Answer Correct ?

31 Yes

6 No

Please Help Members By Posting Answers For Below Questions

Tell me what is top half & bottom half of a kernel?

760

What is watchdog timer?

847

What are the different types of embedded systems?

811

What do you do to stay abreast of the latest technologies and tools?

835

What are recursive functions? Can we make them in line?

780

Tell me what is null pointer and what is its use?

798

What is a 'volatile' variable?

798

Tell me why embedded system is useful?

788

What is difference between binary semaphore and mutex?

865

What elements of oo design are most prone to abuse? How would you mitigate that?

931

What is the function of simple thread poll in embedded system?

810

what is meant by a forward reference in c?

770

Tell me what is the function of dma controlled in embedded system?

800

If your database was under a lot of strain, what are the first few things you might consider to speed it up?

799

Tell me can include files be nested?

782