NAME
diag0 — diagnostic interface to I/O subsystem
DESCRIPTION
diag0
is the diagnostic pseudo-driver
used by the on-line diagnostic subsystem.
The kernel sends diagnostic events here
for logging by the diagnostic subsystem.
The diagnostic subsystem also sends diagnostic requests
to the kernel via
diag0.
WARNINGS
If the diagnostic subsystem
does not read diagnostic events from
diag0
as fast as they are logged by the kernel,
a warning message
Warning: DIAG0 -- message queue full
appears on the console.
AUTHOR
diag0
was developed by HP.
FILES
- /stand/vmunix
- /dev/diag0
- /dev/diag/diag0
- /dev/diag
directory containing diagnostic device files
SEE ALSO
sysdiag(1M),
diaginit(1M).
Online Diagnostic Subsystem
manuals.
