perf tests shell: Fix check for libtracevent support

Test “Use vfs_getname probe to get syscall args filenames” fails in
environment with missing libtraceevent support as below:

  82: Use vfs_getname probe to get syscall args filenames             :
  --- start ---
  test child forked, pid 304726
  Recording open file:
  event syntax error: 'probe:vfs_getname*'
                       \___ unsupported tracepoint

  libtraceevent is necessary for tracepoint support
  Run 'perf list' for a list of valid events

   Usage: perf record [<options>] [<command>]
      or: perf record [<options>] -- <command> [<options>]

      -e, --event <event>   event selector. use 'perf list' to list available events
  test child finished with -1
  ---- end ----
  Use vfs_getname probe to get syscall args filenames: FAILED!

The environment has debuginfo but is missing the libtraceevent devel.

Hence perf is compiled without libtraceevent support.  The test tries to
add probe “probe:vfs_getname” and then uses it with “perf record”.  This
fails at function “parse_events_add_tracepoint" due to missing
libtraceevent.

Similarly "probe libc's inet_pton & backtrace it with ping" test slso
fails with same reason.

Add a function in 'perf test shell' library to check if perf record with
—dry-run reports any error on missing support for libtraceevent. Update
both the tests to use this new function “skip_no_probe_record_support”
before proceeding With using probe point via perf builtin record.

With the change,

  82: Use vfs_getname probe to get syscall args filenames             :
  --- start ---
  test child forked, pid 305014
  Recording open file:
  libtraceevent is necessary for tracepoint support
  test child finished with -2
  ---- end ----
  Use vfs_getname probe to get syscall args filenames: Skip

   81: probe libc's inet_pton & backtrace it with ping                 :
  --- start ---
  test child forked, pid 305036
  libtraceevent is necessary for tracepoint support
  test child finished with -2
  ---- end ----
  probe libc's inet_pton & backtrace it with ping: Skip

Signed-off-by: Athira Rajeev <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Disha Goel <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Madhavan Srinivasan <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Nageswara R Sastry <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: [email protected],
Cc: [email protected]
Link: http://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

0 files changed, 0 insertions, 0 deletions