Hi Everybody,
what is "nested irq disables" in irq.h? In
interrupt enable handler it checks for the depth of an interrupt(what
is that?). Can anybody help?

Apart from these, I am wondering what are the different fields in
/proc/meminfo. A sample output is:

# > cat /proc/interrupts
2: 1270 MIPS serial
3: 747 MIPS eth0
4: 0 MIPS linux-kernel-bde
7: 332894 MIPS timer

What does the 2nd coloumn indicate?