Removes from the kernel the registration of a High Availability Event Handler.
#include <sys/high_avail.h>
int register_HA_handler (ha_handler)
ha_handler_ext_t * ha_handler;
The unregister_HA_handler kernel service cancels an unconfigured kernel extensions that have registered a high availability event handler, done by the register_HA_handler kernel service, so that the kernel extension can be unloaded.
Failure to do so may cause a system crash when a high availability event
such as a processor deallocation is initiated due to some hardware fault.
The unregister_HA_handler kernel service can be called from the process environment only.
An extension may register the same HAEH N times (N > 1). Although this is considered an incorrect behaviour, no error is reported. The given HAEH will be invoked N times for each HA event. This handler has to be unregistered as many times as it was registered.
| 0 | Indicates a successful operation. |
A non-zero value indicates an error.
The register_HA_handler kernel service.
The RAS Kernel Services in the AIX 5L Version 5.2 Kernel Extensions and Device Support Programming Concepts.