BFE Engineering
42fb386f60
Replace every em dash with real punctuation (rewrites, not hyphen swaps) in docs, code comments, scripts, configs, and the port records; convert en dashes, curly quotes, ellipsis glyphs, arrows, and section signs to ASCII; drop machine-writing tell phrases from living docs. ADR titles now use a colon. The M2 bring-up DTS model string carried an em dash into the patch series and its record echoes; fixed at both, and the full series re-verified to apply cleanly onto pristine 6.18.46. One comment in freshness.h deliberately names the em dash glyph the UI renders as the unknown mark; that is data, kept as prose naming it. Verified: cargo tests (sim, config-lint, rs485-bridge), shellcheck, both driver MC/DC harnesses, patches-apply.
93 lines
3.1 KiB
Bash
Executable File
93 lines
3.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Clock-sanity scenario (issue #3 regression guard): boot the VM, run the
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# musl-static clockprobe in the guest, and assert the vDSO monotonic RATE
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# matches the kernel's /proc/uptime within 1%. Under QEMU -M virt this passes
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# on the current kernel (measured 0.99963): a regression here means the
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# generic vDSO path broke. The RV1106 *board* leg of issue #3 is a separate,
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# bench-only measurement; this scenario cannot see board-specific CNTFRQ or
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# CNTVOFF misprogramming.
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#
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# FAILS CLOSED on missing prerequisites.
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#
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# Usage: clock-sanity.sh <zImage>
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set -euo pipefail
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HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" # qemu/tests/
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QDIR="$(cd "$HERE/.." && pwd)" # qemu/
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ZIMAGE="${1:-}"
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if [ -z "$ZIMAGE" ] || [ ! -f "$ZIMAGE" ]; then
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echo "FATAL: usage: $0 <zImage>" >&2
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exit 1
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fi
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command -v qemu-system-arm >/dev/null || {
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echo "FATAL: qemu-system-arm not on PATH: see qemu/README.md" >&2
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exit 1
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}
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command -v arm-linux-gnueabihf-gcc >/dev/null || {
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echo "FATAL: arm-linux-gnueabihf-gcc needed to cross-build the probe" >&2
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exit 1
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}
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# Build the probe for the guest (static musl armv7) and stage it as payload.
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( cd "$HERE/clockprobe" && \
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CARGO_TARGET_ARMV7_UNKNOWN_LINUX_MUSLEABIHF_LINKER=arm-linux-gnueabihf-gcc \
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cargo build -q --release --target armv7-unknown-linux-musleabihf )
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install -m 0755 "$HERE/clockprobe/target/armv7-unknown-linux-musleabihf/release/clockprobe" \
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"$QDIR/payload/clockprobe"
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WORK="$(mktemp -d /tmp/wqc.XXXXXX)"
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QEMU_PID=""
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cleanup() {
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if [ -n "$QEMU_PID" ]; then kill "$QEMU_PID" 2>/dev/null || true; fi
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rm -rf "$WORK"
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}
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trap cleanup EXIT
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bash "$QDIR/mkinitramfs.sh"
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bash "$QDIR/mkimage.sh"
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for _attempt in 1 2 3; do
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PORT=$((22000 + RANDOM % 20000))
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: > "$WORK/console.log"
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{ sleep 40; printf '/usr/bin/clockprobe\n'; sleep 16; printf 'poweroff -f\n'; sleep 8; } | \
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bash "$QDIR/run.sh" --kernel "$ZIMAGE" --shell \
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--ssh-port "$PORT" --http-port $((PORT + 1)) --api-port $((PORT + 2)) \
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> "$WORK/console.log" 2>&1 &
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QEMU_PID=$!
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sleep 3
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kill -0 "$QEMU_PID" 2>/dev/null && break
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if grep -aq 'Could not set up host forwarding' "$WORK/console.log"; then
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echo "== hostfwd port collision on base $PORT, retrying"
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QEMU_PID=""
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continue
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fi
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echo "FATAL: VM died at launch:" >&2
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tail -20 "$WORK/console.log" >&2
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exit 1
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done
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if [ -z "$QEMU_PID" ] || ! kill -0 "$QEMU_PID" 2>/dev/null; then
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echo "FATAL: could not launch the VM after 3 port attempts" >&2
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exit 1
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fi
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wait "$QEMU_PID" || true
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grep -a 'CLOCKPROBE' "$WORK/console.log" || {
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echo "FATAL: probe never ran; console tail:" >&2
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tail -25 "$WORK/console.log" >&2
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exit 1
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}
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python3 - "$WORK/console.log" <<'EOF'
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import re, sys
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text = open(sys.argv[1], errors="replace").read()
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m = re.search(r"ratio_mono=([0-9.]+) ratio_raw=([0-9.]+)", text)
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if not m:
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sys.exit("FATAL: no ratio line in console output")
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mono, raw = float(m.group(1)), float(m.group(2))
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ok = abs(mono - 1.0) < 0.01 and abs(raw - 1.0) < 0.01
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print(f"clock-sanity: ratio_mono={mono} ratio_raw={raw} -> {'PASS' if ok else 'FAIL'}")
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sys.exit(0 if ok else 1)
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EOF
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echo "CLOCK-SANITY-PASS"
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