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+.TH modcalls.d 1m  "$Date:: 2007-08-05 #$" "USER COMMANDS"
+.SH NAME
+modcalls.d \- kernel function calls by module. Uses DTrace.
+.SH SYNOPSIS
+.B modcalls.d
+.SH DESCRIPTION
+modcalls.d is a DTrace OneLiner to a report of the number of 
+kernel function calls by module.
+
+This script may be useful to determine whether drivers are "thinking" when
+troubleshooting driver issues.
+
+Docs/oneliners.txt and Docs/Examples/oneliners_examples.txt
+in the DTraceToolkit contain this as a oneliner that can be cut-n-paste
+to run.
+
+Since this uses DTrace, only the root user or users with the
+dtrace_kernel privilege can run this command.
+.SH OS
+Any
+.SH STABILITY
+stable - while this script uses the unstable fbt provider, it does so
+in a stable way.
+.SH EXAMPLES
+.TP
+This samples until Ctrl\-C is hit.
+# 
+.B modcalls.d
+.PP
+.SH FIELDS
+.TP
+first field
+This is the module name, or kernel driver name. if a name is
+unfamiliar to you there may be a man page to explain what it is.
+.TP
+second field
+This is the number of function calls by this module.
+.PP
+.SH DOCUMENTATION
+See the DTraceToolkit for further documentation under the 
+Docs directory. The DTraceToolkit docs may include full worked
+examples with verbose descriptions explaining the output.
+.SH EXIT
+modcalls.d will sample until Ctrl\-C is hit.
+.SH AUTHOR
+Brendan Gregg
+[Sydney, Australia]
+.SH SEE ALSO
+dtrace(1M)
+