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https://github.com/cirosantilli/linux-kernel-module-cheat.git
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f5065183a8
This lead to a re-factoring of count boot instructions, since trace2line relies on the same tracing mechanism. Also, now that we have common factored, I've decided to put the traces on the out dir, to concentrate all outputs in a single place, and allow easy switching between archs.
24 lines
1.0 KiB
Bash
Executable File
24 lines
1.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -eu
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. common
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arch=x86_64
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while getopts a: OPT; do
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case "$OPT" in
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a)
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arch="$OPTARG"
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;;
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esac
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done
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set_common_vars "$arch" false
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time ./run -a "$arch" -e 'init=/poweroff.out' -- -trace exec_tb,file="${lkmc_out_dir}/trace.bin"
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time ./qemu/scripts/simpletrace.py "${out_dir}/build/host-qemu-custom/trace-events-all" "${lkmc_out_dir}/trace.bin" >"${lkmc_out_dir}/trace.txt"
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# Instruction count.
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# We could put this on a separate script, but it just adds more arch boilerplate to a new script.
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# So let's just leave it here for now since it did not add a significant processing time.
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echo "instruction count all: $(wc -l "${lkmc_out_dir}/trace.txt" | cut -d' ' -f1)"
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entry_addr=$("${out_dir}"/host/bin/*-buildroot-*-readelf -h "${out_dir}/build/linux-custom/vmlinux" | grep 'Entry point address' | sed -E 's/.*: *//')
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echo "entry address: ${entry_addr}"
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sed "/${entry_addr}/q" "${lkmc_out_dir}/trace.txt" >"${lkmc_out_dir}/trace-boot.txt"
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echo "instruction count firmware: $(wc -l "${lkmc_out_dir}/trace-boot.txt" | cut -d' ' -f1)"
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