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lava: improve testcase signal emission on serial console #449

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lava: improve testcase signal emission on serial console #449

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12 changes: 9 additions & 3 deletions Runner/utils/send-to-lava.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -28,10 +28,16 @@ else
echo "[WARNING] Result file missing: $RESULT_FILE" >&2
fi

# Emit signals in one clean atomic flush
# Emit signals using shell builtin printf.
# Do not use cat. Do not touch printk/dmesg.
if [ -s "$SIGNAL_FILE" ]; then
sleep 1 # small delay to let dmesg calm
cat "$SIGNAL_FILE"
while IFS= read -r signal_line || [ -n "$signal_line" ]; do
[ -n "$signal_line" ] || continue

# Blank lines help if previous console output did not end cleanly.
# The signal itself is still emitted only once.
printf '\n%s\n\n' "$signal_line"
done < "$SIGNAL_FILE"
fi

# Cleanup
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