linux-kernel - [PATCH v5 9/9] perf test: Add precise_max subtest to the perf record shell test

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241016062359.264929-10-namhyung@kernel.org>
Date: Tue, 15 Oct 2024 23:23:59 -0700
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Kan Liang <kan.liang@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-perf-users@...r.kernel.org,
	Ravi Bangoria <ravi.bangoria@....com>,
	Mark Rutland <mark.rutland@....com>,
	James Clark <james.clark@....com>,
	Kajol Jain <kjain@...ux.ibm.com>,
	Thomas Richter <tmricht@...ux.ibm.com>,
	Atish Patra <atishp@...shpatra.org>,
	Palmer Dabbelt <palmer@...osinc.com>,
	Mingwei Zhang <mizhang@...gle.com>
Subject: [PATCH v5 9/9] perf test: Add precise_max subtest to the perf record shell test

It's a very simply test just to run with cycles:P and instructions:P
events.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/tests/shell/record.sh | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
index 8d6366d96883edb3..b23e83a099f84a65 100755
--- a/tools/perf/tests/shell/record.sh
+++ b/tools/perf/tests/shell/record.sh
@@ -271,6 +271,30 @@ test_topdown_leader_sampling() {
   echo "Topdown leader sampling test [Success]"
 }
 
+test_precise_max() {
+  echo "precise_max attribute test"
+  if ! perf stat -e "cycles,instructions" true 2> /dev/null
+  then
+    echo "precise_max attribute [Skipped no hardware events]"
+    return
+  fi
+  # Just to make sure it doesn't fail
+  if ! perf record -o "${perfdata}" -e "cycles:P" true 2> /dev/null
+  then
+    echo "precise_max attribute [Failed cycles:P event]"
+    err=1
+    return
+  fi
+  # On AMD, cycles and instructions events are treated differently
+  if ! perf record -o "${perfdata}" -e "instructions:P" true 2> /dev/null
+  then
+    echo "precise_max attribute [Failed instructions:P event]"
+    err=1
+    return
+  fi
+  echo "precise_max attribute test [Success]"
+}
+
 # raise the limit of file descriptors to minimum
 if [[ $default_fd_limit -lt $min_fd_limit ]]; then
        ulimit -Sn $min_fd_limit
@@ -284,6 +308,7 @@ test_branch_counter
 test_cgroup
 test_leader_sampling
 test_topdown_leader_sampling
+test_precise_max
 
 # restore the default value
 ulimit -Sn $default_fd_limit
-- 
2.47.0.rc1.288.g06298d1525-goog