linux-kernel - [PATCH v4 05/10] perf tests record: Add basic uid filtering test

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Message-ID: <20250604174545.2853620-6-irogers@google.com>
Date: Wed,  4 Jun 2025 10:45:39 -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>, 
	Dapeng Mi <dapeng1.mi@...ux.intel.com>, Thomas Richter <tmricht@...ux.ibm.com>, 
	Veronika Molnarova <vmolnaro@...hat.com>, Chun-Tse Shao <ctshao@...gle.com>, Leo Yan <leo.yan@....com>, 
	Hao Ge <gehao@...inos.cn>, Howard Chu <howardchu95@...il.com>, 
	Weilin Wang <weilin.wang@...el.com>, Levi Yun <yeoreum.yun@....com>, 
	"Dr. David Alan Gilbert" <linux@...blig.org>, Gautam Menghani <gautam@...ux.ibm.com>, 
	Tengda Wu <wutengda@...weicloud.com>, linux-perf-users@...r.kernel.org, 
	linux-kernel@...r.kernel.org, bpf@...r.kernel.org
Subject: [PATCH v4 05/10] perf tests record: Add basic uid filtering test

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 <irogers@...gle.com>
---
 tools/perf/tests/shell/record.sh | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
index 587f62e34414..2022a4f739be 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" -- \
@@ -345,6 +370,7 @@ test_system_wide
 test_workload
 test_branch_counter
 test_cgroup
+test_uid
 test_leader_sampling
 test_topdown_leader_sampling
 test_precise_max
-- 
2.50.0.rc0.604.gd4ff7b7c86-goog