[Bug testsuite/16570] New: the syscall.exp and nd_syscall.exp testcases take too long

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

https://sourceware.org/bugzilla/show_bug.cgi?id=16570

            Bug ID: 16570
           Summary: the syscall.exp and nd_syscall.exp testcases take too
                    long
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: testsuite
          Assignee: systemtap at sourceware dot org
          Reporter: dsmith at redhat dot com

I've been adding more C testcases for the syscall/nd_syscall testsuite. I've
noticed that these testcases take a long time to run. On a recent debug x86_64
kernel, the syscall testsuite took over 38 minutes to run.

>From some debugging, the majority of that time is spent compiling and
recompiling the test module. Even using a cached module, it takes a lot of time
to process the sys.stp/nd_sys.stp scripts since they probe every syscall.

Compiling the module once, then using staprun to load the resulting module
should speed these tests up.

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