displayintr(ADM)

displayintr -- show distribution of interrupt handlers on an SMP system

Syntax

/etc/displayintr [ -c CPU ] [ -n name ]

Description

displayintr shows the distribution of device driver interrupt handlers between the CPUs of an SMP system.

displayintr understands the following options:

-c CPU: Specify the initial processor to be used in the output. The default is to use the base processor (CPU 1).
-n name: Specify an alternative name for the executable kernel. The default name is /unix.

For each CPU, displayintr shows the names of the interrupt handler routines associated with each interrupt vector number, and one or more of the following code letters to indicate its capabilities:

F: Fixed; the interrupt handler is always associated with this CPU.
M: Movable; the interrupt handler can be associated with a different CPU at system startup.
S: Sharable; the interrupt handler can share the interrupt vector with another handler.

Exit values

Upon successful completion, the program exits with status 0. On error, the exit value is non-zero.

Examples

The following example shows that the interrupt handlers ida0intr and ida0intr are movable from CPU 2 and that they are sharing the same interrupt vector:

   Vec no  CPU number
           1               2
   0       clock    (F)    clock    (F)
   1       cnintr   (F)
   4       siointr  (F)
   6       flintr   (F)
   10                      ida0intr (SM)
                           ida1intr (SM)
   13      ci__intr (F)    ci__intr (F)

Standards conformance