protect common resources in kernel

[Choupani]

Dears,
I'm working on kernel in FreeBSD-9. I need to protect a 
common resource (for example a queue). 
There are 4 points for access (read/write) this common resource as bellows:
1. ether_input() – hardware interrupt
2. ip_input() & ip_output() – software interrupt
3. dev_ioctl() – local io control in our own kernel module
4. another kernel thread

Which scenario is proper to use for this purpose:

1. kernel mutex (MTX_DEF)
2. kernel mutex (MTX_SPIN)
3. kernel share/exclusive lock
4. kernel reader/writer lock



--
View this message in context: http://freebsd.1045724.n5.nabble.com/protect-common-resources-in-kernel-tp5766007.html
Sent from the freebsd-net mailing list archive at Nabble.com.