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selftests/ftrace: Add function_graph tracer to func-filter-pid test

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The function tracer is tested to see if pid filtering works. Add a test to
test function_graph tracer as well, but only if the function_graph tracer
is enabled for the top level or instance.

Link: https://lore.kernel.org/linux-trace-kernel/20240603190825.083048115@goodmis.org

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Florent Revest <revest@chromium.org>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Cc: bpf <bpf@vger.kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alan Maguire <alan.maguire@oracle.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Guo Ren <guoren@kernel.org>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Google) 2024-06-03 15:07:30 -04:00
parent fe835e3ca4
commit 35b944a997
1 changed files with 22 additions and 5 deletions
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27
tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc
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@ -14,6 +14,11 @@ if [ ! -f options/function-fork ]; then
echo "no option for function-fork found. Option will not be tested."
fi
if [ ! -f options/funcgraph-proc ]; then
do_funcgraph_proc=0
echo "no option for function-fork found. Option will not be tested."
fi
read PID _ < /proc/self/stat
if [ $do_function_fork -eq 1 ]; then
@ -21,12 +26,18 @@ if [ $do_function_fork -eq 1 ]; then
orig_value=`grep function-fork trace_options`
fi
if [ $do_funcgraph_proc -eq 1 ]; then
orig_value2=`cat options/funcgraph-proc`
fi
do_reset() {
if [ $do_function_fork -eq 0 ]; then
return
if [ $do_function_fork -eq 1 ]; then
echo $orig_value > trace_options
fi
echo $orig_value > trace_options
if [ $do_funcgraph_proc -eq 1 ]; then
echo $orig_value2 > options/funcgraph-proc
fi
}
fail() { # msg
@ -36,13 +47,15 @@ fail() { # msg
}
do_test() {
TRACER=$1
disable_tracing
echo do_execve* > set_ftrace_filter
echo $FUNCTION_FORK >> set_ftrace_filter
echo $PID > set_ftrace_pid
echo function > current_tracer
echo $TRACER > current_tracer
if [ $do_function_fork -eq 1 ]; then
# don't allow children to be traced
@ -82,7 +95,11 @@ do_test() {
fi
}
do_test
do_test function
if grep -s function_graph available_tracers; then
do_test function_graph
fi
do_reset
exit 0