BM/PMU: Add PMU C-state test case

BM/pmu/pmu_cstate_tests.sh

@@ -0,0 +1,112 @@
+#!/usr/bin/env bash
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2026 Intel Corporation
+#
+# File:         pmu_cstate_tests.sh
+#
+# Description:  PMU CSTATE test script
+#
+#
+
+cd "$(dirname "$0")" 2>/dev/null || exit 1
+source ../.env
+: "${CASE_NAME:=""}"
+
+usage() {
+  cat <<__EOF
+  usage: ./${0##*/} [-t TESTCASE_ID] [-H]
+  -t  TEST CASE ID
+  -H  show this
+__EOF
+}
+
+# Server platforms support different core cstate and package cstate
+perf_cstate_list_server() {
+    local cpu_family=""
+    cpu_family=$(lscpu | grep "^CPU family:" | awk '{print $3}')
+    local cpu_model=""
+    cpu_model=$(lscpu | grep Model: | awk '{print $2}')
+
+    tc_out=$(turbostat -q --show idle sleep 1 2>&1)
+    [[ -n "$tc_out" ]] || block_test "Did not get turbostat log"
+    test_print_trc "turbostat tool output: $tc_out"
+    tc_out_cstate_list=$(echo "$tc_out" | grep -E "^Busy%")
+
+    # Check core cstate perf event
+    perf_cstates=$(perf list | grep cstate | grep "Kernel PMU event")
+    [[ -n "$perf_cstates" ]] || block_test "Did not get cstate events by perf list"
+    test_print_trc "perf list shows cstate events: $perf_cstates"
+    perf_core_cstate_num=$(perf list | grep "Kernel PMU event" | grep -c cstate_core)
+    for ((i = 1; i <= perf_core_cstate_num; i++)); do
+        perf_core_cstate=$(perf list | grep cstate_core | grep "Kernel PMU event" | sed -n "$i, 1p")
+        if [[ $perf_core_cstate =~ c1 ]] && [[ $tc_out_cstate_list =~ CPU%c1 ]]; then
+            test_print_trc "$perf_core_cstate is supported and aligned with turbostat"
+        elif [[ $perf_core_cstate =~ c6 ]] && [[ $tc_out_cstate_list =~ CPU%c6 ]]; then
+            test_print_trc "$perf_core_cstate is supported and aligned with turbostat"
+        else
+            die "perf list shows unexpected core_cstate event."
+        fi
+    done
+
+    # Check pkgc2 and pkgc6 perf event
+    perf_pkg_cstate_num=$(perf list | grep "Kernel PMU event" | grep -c cstate_pkg)
+    for ((i = 1; i <= perf_pkg_cstate_num; i++)); do
+        perf_pkg_cstate=$(perf list | grep cstate_pkg | grep "Kernel PMU event" | sed -n "$i, 1p")
+        if [[ $perf_pkg_cstate =~ c2 ]] && [[ $tc_out_cstate_list =~ Pkg%pc2 ]]; then
+            test_print_trc "$perf_pkg_cstate is supported and aligned with turbostat"
+        elif [[ $perf_pkg_cstate =~ c6 ]] && [[ $tc_out_cstate_list =~ Pkg%pc6 ]]; then
+            test_print_trc "$perf_pkg_cstate is supported and aligned with turbostat"
+        else
+            die "perf list shows unexpected pkg_cstate event."
+        fi
+    done
+    # Check module c6 perf event for Atom core servers
+    # Model ID: 175 is SRF, 221 is CWF
+    # Family ID 19, Model ID 1: DMR
+    if [[ $cpu_model -eq 175 ]] || [[ $cpu_model -eq 221 ]] || [[ $cpu_model -eq 1 && $cpu_family -eq 19 ]]; then
+        perf_mc6=$(perf list | grep cstate_module | grep "Kernel PMU event")
+        if [[ -n $perf_mc6 ]]; then
+            test_print_trc "perf list shows cstate_module event: $perf_mc6"
+            if [[ $perf_mc6 =~ c6 ]] && [[ $tc_out_cstate_list =~ Mod%c6 ]]; then
+                test_print_trc "$perf_mc6 is supported and aligned with turbostat."
+            else
+                die "$perf_mc6 is not aligned with turbostat."
+            fi
+        else
+            die "perf list does not show cstate_module event."
+        fi
+    fi
+}
+
+pmu_cstate_test() {
+  case $TEST_SCENARIO in
+    cstate_event_list)
+      perf_cstate_list_server
+      ;;
+    esac
+  return 0
+}
+
+while getopts :t:H arg; do
+  case $arg in
+    t)
+      TEST_SCENARIO=$OPTARG
+      ;;
+    H)
+      usage && exit 0
+      ;;
+    \?)
+      usage
+      die "Invalid Option -$OPTARG"
+      ;;
+    :)
+      usage
+      die "Option -$OPTARG requires an argument."
+      ;;
+  esac
+done
+
+pmu_cstate_test
+# Call teardown for passing case
+exec_teardown

BM/pmu/tests-cwf

@@ -41,3 +41,4 @@ pmu_tests.sh -t zbit
 pmu_tests.sh -t counting
 pmu_tests.sh -t sampling
 pmu_tests.sh -t counting_multi
+pmu_cstate_tests.sh -t cstate_event_list

BM/pmu/tests-dmr

@@ -36,3 +36,4 @@ pmu_tests.sh -t arch_pebs_basic_group
 pmu_tests.sh -t rdpmc_user_disable_0
 pmu_tests.sh -t rdpmc_user_disable_1
 pmu_tests.sh -t rdpmc_user_disable_2
+pmu_cstate_tests.sh -t cstate_event_list

BM/pmu/tests-gnr

@@ -22,3 +22,4 @@ apebs_tests.sh -t ip_1 -w 1
 apebs_tests.sh -t ip_2 -w 1
 apebs_tests.sh -t data_src -w 1
 pmu_tests.sh -t timed_pebs_msr
+pmu_cstate_tests.sh -t cstate_event_list