53 lines
1.8 KiB
Bash
Executable File
53 lines
1.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Kaisa：对 hda_link_dma_hw_params / snd_hdac_ext_bus_link_set_stream_id / sof_ipc3_pcm_hw_params
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# 做 function_graph 追踪（需 root、CONFIG_FUNCTION_GRAPH、debugfs 已挂载）。
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# 用法：sudo ./scripts/collect-hda-link-ftrace.sh [plughw:0,3]
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# 产出：/tmp/hda_link_ftrace_<ts>.txt；请复制到 audio_topology/collected/
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# 详见 patches/ubuntu-hwe-6.17/STREAM_PCM_PARAMS_CHROME_UBUNTU_NOTES.md §6.1
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set -euo pipefail
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if [[ "${EUID:-}" -ne 0 ]]; then
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echo "请使用 sudo 运行。" >&2
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exit 1
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fi
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PLUG="${1:-plughw:0,3}"
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TRACING="${TRACING:-/sys/kernel/tracing}"
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if [[ ! -d "$TRACING" ]]; then
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TRACING="/sys/kernel/debug/tracing"
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fi
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if [[ ! -d "$TRACING" ]]; then
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echo "未找到 tracing（$TRACING）。请确认 CONFIG_FTRACE。" >&2
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exit 1
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fi
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TS=$(date +%Y%m%d_%H%M%S)
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KR=$(uname -r)
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OUT="/tmp/hda_link_ftrace_${KR}_${TS}.txt"
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echo "tracing dir: $TRACING"
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echo 0 > "$TRACING/tracing_on" 2>/dev/null || true
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echo function_graph > "$TRACING/current_tracer"
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echo 'hda_link_dma_hw_params' > "$TRACING/set_ftrace_filter"
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echo 'snd_hdac_ext_bus_link_set_stream_id' >> "$TRACING/set_ftrace_filter"
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echo 'sof_ipc3_pcm_hw_params' >> "$TRACING/set_ftrace_filter"
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echo 1 > "$TRACING/options/funcgraph-proc" 2>/dev/null || true
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: > "$TRACING/trace"
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echo 1 > "$TRACING/tracing_on"
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echo "播放: speaker-test -D $PLUG -c 2 -t wav -l 1 (约 8s)"
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timeout 10 speaker-test -D "$PLUG" -c 2 -t wav -l 1 >/dev/null 2>&1 || true
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echo 0 > "$TRACING/tracing_on"
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{
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echo "### uname -r: $KR"
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echo "### plughw: $PLUG"
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echo "### ftrace filter:"
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cat "$TRACING/set_ftrace_filter" 2>/dev/null || true
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echo "### trace:"
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cat "$TRACING/trace"
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} > "$OUT"
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echo "已写入: $OUT ($(wc -l < "$OUT") 行)"
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echo "复制到仓库: cp $OUT /path/to/chromebox_10th_audio_driver/audio_topology/collected/"
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