[v2,07/12] perf tests record: Add basic uid filtering test

Commit Message

Ian Rogers April 10, 2025, 5:36 p.m. UTC

Based on the system-wide test with changes around how failure is
handled as BPF permissions are a bigger issue than perf event
paranoia.

Signed-off-by: Ian Rogers <[e-mail]>
---
 tools/perf/tests/shell/record.sh | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

Patch

diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
index 05d91a663fda..308916f9c292 100755
--- a/tools/perf/tests/shell/record.sh
+++ b/tools/perf/tests/shell/record.sh
@@ -231,6 +231,31 @@  test_cgroup() {
   echo "Cgroup sampling test [Success]"
 }
 
+test_uid() {
+  echo "Uid sampling test"
+  if ! perf record -aB --synth=no --uid "$(id -u)" -o "${perfdata}" ${testprog} \
+    > "${script_output}" 2>&1
+  then
+    if grep -q "libbpf.*EPERM" "${script_output}"
+    then
+      echo "Uid sampling [Skipped permissions]"
+      return
+    else
+      echo "Uid sampling [Failed to record]"
+      err=1
+      # cat "${script_output}"
+      return
+    fi
+  fi
+  if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
+  then
+    echo "Uid sampling [Failed missing output]"
+    err=1
+    return
+  fi
+  echo "Uid sampling test [Success]"
+}
+
 test_leader_sampling() {
   echo "Basic leader sampling test"
   if ! perf record -o "${perfdata}" -e "{cycles,cycles}:Su" -- \
@@ -324,6 +349,7 @@  test_system_wide
 test_workload
 test_branch_counter
 test_cgroup
+test_uid
 test_leader_sampling
 test_topdown_leader_sampling
 test_precise_max