[Bug tapsets/17690] New: probe nfs.proc3.rename no longer valid

["dsmith at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=17690

            Bug ID: 17690
           Summary: probe nfs.proc3.rename no longer valid
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tapsets
          Assignee: systemtap at sourceware dot org
          Reporter: dsmith at redhat dot com

Under newer kernels, the nfs.proc3.rename probe is broken:

====
# stap -ve 'probe nfs.proc3.rename {}'
Pass 1: parsed user script and 109 library script(s) using
216584virt/32080res/2984shr/29532data kb, in 210usr/50sys/255real ms.
semantic error: while resolving probe point: identifier 'nfs' at <input>:1:7
        source: probe nfs.proc3.rename {}
====

This is because the kernel switched to an asynchronous rename method then
finally removed the old code that systemtap probed in this commit:

====
commit 33912be816d96e204ed7a93690552daa39c08ea9                                 
Author: Jeff Layton <jlayton@redhat.com>                                        
Date:   Mon Mar 17 07:06:57 2014 -0400                                          

    nfs: remove synchronous rename code                                         

    Now that nfs_rename uses the async infrastructure, we can remove this.      
====

This commit is first present in kernel 3.15.

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