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| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-04-18 18:32:21 +0200 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-04-18 18:46:11 +0200 |
| commit | 9ed19c7695670d00455c1de4682d5c7f14618689 (patch) | |
| tree | a4e464cae11cfdae058461768145de08321cdac7 /tools/testing/selftests/ftrace/test.d | |
| parent | selftests: ftrace: Add a testcase for function PID filter (diff) | |
| download | linux-9ed19c7695670d00455c1de4682d5c7f14618689.tar.xz linux-9ed19c7695670d00455c1de4682d5c7f14618689.zip | |
selftests: ftrace: Add check for function-fork before running pid filter test
Have the func-filter-pid test check for the function-fork option before
testing it. It can still test the pid filtering, but will stop before
testing the function-fork option for children inheriting the pids.
This allows the test to be added before the function-fork feature, but after
a bug fix that triggers one of the bugs the test can cause.
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'tools/testing/selftests/ftrace/test.d')
| -rw-r--r-- | tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc index cd552f44c3b4..bab5ff7c607e 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc @@ -19,10 +19,19 @@ if [ ! -f set_ftrace_filter ]; then exit_unsupported fi +do_function_fork=1 + +if [ ! -f options/function-fork ]; then + do_function_fork=0 + echo "no option for function-fork found. Option will not be tested." +fi + read PID _ < /proc/self/stat -# default value of function-fork option -orig_value=`grep function-fork trace_options` +if [ $do_function_fork -eq 1 ]; then + # default value of function-fork option + orig_value=`grep function-fork trace_options` +fi do_reset() { reset_tracer @@ -31,6 +40,10 @@ do_reset() { echo > set_ftrace_filter echo > set_ftrace_pid + if [ $do_function_fork -eq 0 ]; then + return + fi + echo $orig_value > trace_options } @@ -53,8 +66,10 @@ do_test() { echo $PID > set_ftrace_pid echo function > current_tracer - # don't allow children to be traced - echo nofunction-fork > trace_options + if [ $do_function_fork -eq 1 ]; then + # don't allow children to be traced + echo nofunction-fork > trace_options + fi enable_tracing yield @@ -70,6 +85,10 @@ do_test() { disable_tracing clear_trace + if [ $do_function_fork -eq 0 ]; then + return + fi + # allow children to be traced echo function-fork > trace_options |