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Commit 60c1afbf authored by Masami Hiramatsu's avatar Masami Hiramatsu Committed by Steven Rostedt
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selftests: ftrace: Add a testcase for function filter glob match 

Add function filter glob matching test case.
This checks whether the kernel supports glob matching
(front match, end match, middle match, side match,
character class and '?').

Here is the test result.
  -----
  ./ftracetest test.d/ftrace/func-filter-glob.tc
  === Ftrace unit tests ===
  [1] ftrace - function glob filters	[PASS]

  # of passed:  1
  # of failed:  0
  # of unresolved:  0
  # of untested:  0
  # of unsupported:  0
  # of xfailed:  0
  # of undefined(test bug):  0
  -----

Link: http://lkml.kernel.org/r/147928407589.22982.16364174511117104303.stgit@devbox



Signed-off-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 62197529

tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc

0 → 100644
+49 −0
Original line number Diff line number Diff line 
#!/bin/sh

# description: ftrace - function glob filters



# Make sure that function glob matching filter works.



if ! grep -q function available_tracers; then

    echo "no function tracer configured"

    exit_unsupported

fi



disable_tracing

clear_trace



# filter by ?, schedule is always good

if ! echo "sch?dule" > set_ftrace_filter; then

    # test for powerpc 64

    if ! echo ".sch?dule" > set_ftrace_filter; then

	fail "can not enable schedule filter"

    fi

    cat set_ftrace_filter | grep '^.schedule$'

else

    cat set_ftrace_filter | grep '^schedule$'

fi



ftrace_filter_check() { # glob grep

  echo "$1" > set_ftrace_filter

  cut -f1 -d" " set_ftrace_filter > $TMPDIR/actual

  cut -f1 -d" " available_filter_functions | grep "$2" > $TMPDIR/expected

  DIFF=`diff $TMPDIR/actual $TMPDIR/expected`

  test -z "$DIFF"

}



# filter by *, front match

ftrace_filter_check '*schedule' '^.*schedule$'



# filter by *, middle match

ftrace_filter_check '*schedule*' '^.*schedule.*$'



# filter by *, end match

ftrace_filter_check 'schedule*' '^schedule.*$'



# filter by *, both side match

ftrace_filter_check 'sch*ule' '^sch.*ule$'



# filter by char class.

ftrace_filter_check '[Ss]y[Ss]_*' '^[Ss]y[Ss]_.*$'



echo > set_ftrace_filter

enable_tracing