Content-type: text/html Man page of ddi_in_panic

ddi_in_panic

Section: Kernel Functions for Drivers (9F)
Updated: 23 Jun 1997
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NAME

ddi_in_panic - determine if system is in panic state  

SYNOPSIS

#include <sys/ddi.h>
#include <sys/sunddi.h>

int ddi_in_panic(void);  

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).  

DESCRIPTION

Drivers controlling devices on which the system may write a kernel crash dump in the event of a panic can call ddi_in_panic() to determine if the system is panicking.

When the system is panicking, the calls of functions scheduled by timeout(9F) and ddi_trigger_softintr(9F) will never occur. Neither can delay(9F) be relied upon, since it is implemented via timeout(9F).

Drivers that need to enforce a time delay such as SCSI bus reset delay time must busy-wait when the system is panicking.  

RETURN VALUES

ddi_in_panic() returns 1 if the system is in panic, or 0 otherwise.  

CONTEXT

ddi_in_panic() may be called from any context.  

SEE ALSO

dump(9E), delay(9F), ddi_trigger_softintr(9F), timeout(9F)

Writing Device Drivers


 

Index

NAME
SYNOPSIS
INTERFACE LEVEL
DESCRIPTION
RETURN VALUES
CONTEXT
SEE ALSO

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