Understanding the Diagnostic Subsystem for AIX

Diagnostic Kernel Extension

This section describes the use of and programming interfaces to the Diagnostic Kernel Extension (PDIAGEX) and device configuration services. The pdiag_ calls are contained in /usr/lib/libpdiag.a. The pdiag_dd_ calls are contained in /usr/lib/drivers/pdiagex kernel extension.

The following topics are discussed in detail:

• Overview
• Device Configuration
• Loading PDIAGEX
• Second-Level Interrupt Handlers
• Programming Interfaces for libpdiag.a
• Programming Interfaces for PDIAGEX
• Data Dictionary