fbt(7D) 							      Devices								   fbt(7D)

NAME

       fbt - DTrace function boundary tracing provider

DESCRIPTION

       The fbt driver is a DTrace dynamic tracing provider that performs dynamic instrumentation at function boundaries in the Solaris kernel.

       The  function  is the fundamental unit of program text. In a well-designed system, the function performs a discrete and well-defined opera-
       tion on a specified object or series of like objects. Most functions are  implemented  by  themselves  calling  functions  on  encapsulated
       objects,  but  some  functions --so-called "leaf functions" -- are implemented without making further function calls. The Function Boundary
       Tracing fbt provider contains a mechanism for instrumenting the vast majority of functions in the kernel and offering  the  instrumentation
       as a set of DTrace probes.

       The  fbt  driver is not a public interface and you access the instrumentation offered by this provider through DTrace. Refer to the Solaris
       Dynamic Tracing Guide for a description of the public documented interfaces available for the DTrace facility and the probes offered by the
       fbt provider.

ATTRIBUTES

       See attributes(5) for a description of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWdtrp			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Private			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       dtrace(1M), attributes(5), dtrace(7D)

       Solaris Dynamic Tracing Guide

SunOS 5.10							    4 Sep 2003								   fbt(7D)