Day24 - Hybrid Mode Stress Test

Objective

Validate:

• Polling behavior
• IRQ behavior
• Hybrid mode switching
• Race condition stability

---

Environment

• Raspberry Pi 5
• hwmon interface

Example path:

/sys/class/hwmon/hwmonX/

---

Test Script

#!/bin/bash

HWMON=$1

POLL="$HWMON/polling_enable"
IRQ="$HWMON/irq_enable"
STATUS="$HWMON/debug_status"

echo "[INFO] Start hybrid stress test"

# Test 1: mode switching
echo "[TEST] mode switching"

echo 0 > $POLL
echo 0 > $IRQ
sleep 1
cat $STATUS

echo 1 > $POLL
sleep 1
cat $STATUS

echo 0 > $POLL
echo 1 > $IRQ
sleep 1
cat $STATUS

echo 1 > $POLL
echo 1 > $IRQ
sleep 1
cat $STATUS

# Test 2: rapid toggle
echo "[TEST] rapid toggle"

for i in {1..20}; do
    echo 1 > $POLL
    sleep 0.2
    echo 0 > $POLL
    sleep 0.2
done

cat $STATUS

# Test 3: hybrid stress
echo "[TEST] hybrid stress"

for i in {1..30}; do
    echo 1 > $POLL
    echo 1 > $IRQ
    sleep 0.2

    echo 0 > $POLL
    sleep 0.2

    echo 1 > $POLL
    echo 0 > $IRQ
    sleep 0.2
done

cat $STATUS

echo "[DONE]"

---

Verification Checklist

• polling_enable=0 → poll_count stops
• irq_enable=0 → irq_count stops
• mode reflects configuration
• last_source is reasonable
• no kernel crash or hang