perf test: Add basic callgraph test to record testing

Give some basic perf record callgraph coverage.

Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20250628015553.1270748-1-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

tools/perf/tests/shell/record.sh

@@ -12,8 +12,10 @@ shelldir=$(dirname "$0")
 . "${shelldir}"/lib/perf_has_symbol.sh
 
 testsym="test_loop"
+testsym2="brstack"
 
 skip_test_missing_symbol ${testsym}
+skip_test_missing_symbol ${testsym2}
 
 err=0
 perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
@@ -359,6 +361,33 @@ test_precise_max() {
   fi
 }
 
+test_callgraph() {
+  echo "Callgraph test"
+
+  case $(uname -m)
+  in s390x)
+       cmd_flags="--call-graph dwarf -e cpu-clock";;
+     *)
+       cmd_flags="-g";;
+  esac
+
+  if ! perf record -o "${perfdata}" $cmd_flags perf test -w brstack
+  then
+    echo "Callgraph test [Failed missing output]"
+    err=1
+    return
+  fi
+
+  if ! perf report -i "${perfdata}" 2>&1 | grep "${testsym2}"
+  then
+    echo "Callgraph test [Failed missing symbol]"
+    err=1
+    return
+  fi
+
+  echo "Callgraph test [Success]"
+}
+
 # raise the limit of file descriptors to minimum
 if [[ $default_fd_limit -lt $min_fd_limit ]]; then
        ulimit -Sn $min_fd_limit
@@ -374,6 +403,7 @@ test_uid
 test_leader_sampling
 test_topdown_leader_sampling
 test_precise_max
+test_callgraph
 
 # restore the default value
 ulimit -Sn $default_fd_limit