perf test: Update ftrace test to use --graph-opts

I found it failed on machines with limited memory because 16M byte
per-cpu buffer is too big.  The reason it added the option is not to
miss tracing data.  Thus we can limit the data size by reducing the
function call depth instead of increasing the buffer size to handle the
whole data.

As it used the same option in the test_ftrace_trace() and it was able
to find the sleep function, it should work with the profile subcommand.

Get rid of other grep commands which might be affected by the depth
change.

Reported-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Link: https://lore.kernel.org/r/20250107224352.1128669-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/tests/shell/ftrace.sh b/tools/perf/tests/shell/ftrace.sh
index 2df05052c324a21ca58f6a66b7c55c68db4bab7a..c243731d2fbf67aa750dd33f90a48a2559a1e164 100755 (executable)
--- a/tools/perf/tests/shell/ftrace.sh
+++ b/tools/perf/tests/shell/ftrace.sh
@@ -67,11 +67,8 @@ test_ftrace_latency() {
 
 test_ftrace_profile() {
     echo "perf ftrace profile test"
-    perf ftrace profile -m 16M sleep 0.1 > "${output}"
+    perf ftrace profile --graph-opts depth=5 sleep 0.1 > "${output}"
     grep ^# "${output}"
-    grep sleep "${output}"
-    grep schedule "${output}"
-    grep execve "${output}"
     time_re="[[:space:]]+1[[:digit:]]{5}\.[[:digit:]]{3}"
     # 100283.000 100283.000 100283.000          1   __x64_sys_clock_nanosleep
     # Check for one *clock_nanosleep line with a Count of just 1 that takes a bit more than 0.1 seconds