linux-kernel - [PATCH v1] perf test: Add basic callgraph test to record testing

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Message-ID: <20250619002443.100301-1-irogers@google.com>
Date: Wed, 18 Jun 2025 17:24:43 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, James Clark <james.clark@...aro.org>, 
	Thomas Richter <tmricht@...ux.ibm.com>, Dapeng Mi <dapeng1.mi@...ux.intel.com>, 
	Chun-Tse Shao <ctshao@...gle.com>, linux-perf-users@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: [PATCH v1] perf test: Add basic callgraph test to record testing

Give some basic perf record callgraph coverage.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/tests/shell/record.sh | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
index 2022a4f739be..603fa6b79b5d 100755
--- a/tools/perf/tests/shell/record.sh
+++ b/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 +361,23 @@ test_precise_max() {
   fi
 }
 
+test_callgraph() {
+  echo "Callgraph test"
+  if ! perf record -o "${perfdata}" -g perf test -w brstack
+  then
+    echo "Callgraph test [Failed missing output]"
+    err=1
+    return
+  fi
+  if ! perf report -i "${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 +393,7 @@ test_uid
 test_leader_sampling
 test_topdown_leader_sampling
 test_precise_max
+test_callgraph
 
 # restore the default value
 ulimit -Sn $default_fd_limit
-- 
2.50.0.rc2.701.gf1e915cc24-goog