[LTP] [PATCH v2] thermal: add new test group

Piotr Kubaj
2025-11-14T18:02:49Z

This is a new test for checking thermal interrupt events.
stress-ng is used because genload doesn't seem to generate enough load.

Signed-off-by: Piotr Kubaj <piotr.kubaj@intel.com>
---
runtest/thermal | 2 +
scenario_groups/default | 1 +
testcases/kernel/Makefile | 1 +
testcases/kernel/thermal/Makefile | 11 +++
testcases/kernel/thermal/thermal01.sh | 101 ++++++++++++++++++++++++++
5 files changed, 116 insertions(+)
create mode 100644 runtest/thermal
create mode 100644 testcases/kernel/thermal/Makefile
create mode 100755 testcases/kernel/thermal/thermal01.sh

diff --git a/runtest/thermal b/runtest/thermal
new file mode 100644
index 000000000..804ef7d79
--- /dev/null
+++ b/runtest/thermal
@@ -0,0 +1,2 @@
+#THERMAL
+thermal_interrupt_events thermal01.sh
diff --git a/scenario_groups/default b/scenario_groups/default
index 0e76b2bee..ffdd7ff25 100644
--- a/scenario_groups/default
+++ b/scenario_groups/default
@@ -26,3 +26,4 @@ crypto
kernel_misc
uevent
watchqueue
+thermal
diff --git a/testcases/kernel/Makefile b/testcases/kernel/Makefile
index 98fd45a9d..ac816e4e8 100644
--- a/testcases/kernel/Makefile
+++ b/testcases/kernel/Makefile
@@ -36,6 +36,7 @@ SUBDIRS += connectors \
sched \
security \
sound \
+ thermal \
tracing \
uevents \
watchqueue \
diff --git a/testcases/kernel/thermal/Makefile b/testcases/kernel/thermal/Makefile
new file mode 100644
index 000000000..789db430d
--- /dev/null
+++ b/testcases/kernel/thermal/Makefile
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) 2025, Intel Corporation. All rights reserved.
+# Author:Piotr Kubaj <piotr.kubaj@intel.com>
+
+top_srcdir ?= ../../..
+
+include $(top_srcdir)/include/mk/env_pre.mk
+
+INSTALL_TARGETS := thermal01.sh
+
+include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/kernel/thermal/thermal01.sh b/testcases/kernel/thermal/thermal01.sh
new file mode 100755
index 000000000..138c30ee7
--- /dev/null
+++ b/testcases/kernel/thermal/thermal01.sh
@@ -0,0 +1,101 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2025 Intel - http://www.intel.com/
+#
+# ---
+# doc
+# Tests the CPU package thermal sensor interface for Intel platforms.
+#
+# It works by checking the initial count of thermal interrupts. Then it
+# decreases the threshold for sending a thermal interrupt to just above
+# the current temperature and runs a workload on the CPU. Finally, it restores
+# the original thermal threshold and checks whether the number of thermal
+# interrupts increased.
+# ---
+#
+# ---
+# env
+# {
+# "needs_root": true,
+# "supported_archs": ["x86", "x86_64"],
+# "needs_cmds": ["stress-ng"]
+# }
+# ---
+
+export LTP_TIMEOUT_MUL=6
+
+. tst_loader.sh
+
+thermal_zone_numbers=""
+temp=""
+temp_high=""
+status=0
+
+tst_test()
+{
+ line=$(grep "Thermal event interrupts" /proc/interrupts)
+ if [ $? -eq 0 ]; then
+ interrupt_array_init=$(echo "$line" | tr -d "a-zA-Z:" | awk '{$1=$1;print}')
+ echo "Initial values of thermal interrupt counters: $interrupt_array_init"
+ num=$(nproc)
+ echo "Number of logical cores: $num"
+ else
+ tst_brk TCONF "Thermal event interrupts is not found."
+ fi
+
+ # Below we check for the thermal_zone which uses x86_pkg_temp driver
+ thermal_zone_numbers=$(grep -l x86_pkg_temp /sys/class/thermal/thermal_zone*/type | sed 's/[^0-9]//g' | tr -t '\n' ' ')
+ echo "x86_pkg_temp thermal zones: $thermal_zone_numbers"
+
+ if [ -z $thermal_zone_numbers ]; then
+ tst_brk TCONF "No x86_pkg_temp thermal zones found"
+ fi
+ for i in $thermal_zone_numbers; do
+ echo "Currently testing x86_pkg_temp thermal_zone$i"
+ TEMP=/sys/class/thermal/thermal_zone$i/temp
+ temp=$(cat "$TEMP")
+ echo "thermal_zone$i current temperature is $temp"
+ if [ "$(echo "$temp <= 0" | bc)" -eq 1 ]; then
+ tst_brk TBROK "Unexpected zone temperature value $temp"
+ fi
+ trip=$(cat /sys/class/thermal/thermal_zone$i/trip_point_1_temp)
+ # Setting trip_point_1_temp for termal_zone$i to $temp + 10 (0.001°C)
+ temp_high=$(( temp + 10 ))
+ echo $temp_high > /sys/class/thermal/thermal_zone$i/trip_point_1_temp
+ run_time=30
+ sleep_time=10
+ while [ $sleep_time -gt 0 ]; do
+ stress-ng --matrix 0 --timeout $run_time
+ temp_cur=$(cat "$TEMP")
+ echo "temp_cur: $temp_cur"
+ [ $temp_cur -gt $temp_high ] && break
+ sleep $sleep_time
+ run_time=$(( run_time - 3 ))
+ sleep_time=$(( sleep_time - 1 ))
+ done
+ [ $temp_cur -gt $temp_high ] || tst_res TFAIL "Zone temperature is not rising as expected"
+
+ # Restore the original trip_point_1_temp value
+ echo $trip > /sys/class/thermal/thermal_zone$i/trip_point_1_temp
+
+ # Check whether thermal interrupts count actually increased
+ interrupt_array_later=$(grep "Thermal event interrupts" /proc/interrupts | \
+ tr -d "a-zA-Z:" | awk '{$1=$1;print}')
+ echo "Current values of thermal interrupt counters: $interrupt_array_later"
+ for j in $(seq 1 "$num"); do
+ interrupt_later=$(echo "$interrupt_array_later" | cut -d " " -f "$j")
+ interrupt_init=$(echo "$interrupt_array_init" | cut -d " " -f "$j")
+ if [ $interrupt_later -le $interrupt_init ]; then
+ status=1
+ fi
+ done
+ done
+
+ if [ $status -eq 0 ]; then
+ tst_res TPASS "x86 package thermal interrupt triggered"
+ else
+ tst_res TFAIL "x86 package thermal interrupt did not trigger"
+ fi
+}
+
+. tst_run.sh
--
2.47.3

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