K 10
svn:author
V 7
asomers
K 8
svn:date
V 27
2019-02-28T19:27:54.617281Z
K 7
svn:log
V 686
fuse(4): convert debug printfs into dtrace probes

fuse(4) was heavily instrumented with debug printf statements that could
only be enabled with compile-time flags.  They fell into three basic groups:

1) Totally redundant with dtrace FBT probes.  These I deleted.
2) Print textual information, usually error messages.  These I converted to
   SDT probes of the form fuse:fuse:FILE:trace.  They work just like the old
   printf statements except they can be enabled at runtime with dtrace.
   They can be filtered by FILE and/or by priority.
3) More complicated probes that print detailed information.  These I
   converted into ad-hoc SDT probes.

Sponsored by:	The FreeBSD Foundation

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