mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-23 02:05:57 +01:00
74b51fc044
The update is required to include 3c3ca64b5f0dd9eef7b1ce1c65cc6e8e9147dd38 otherwise baremetal does not on VExpress. baremetal: create a baremetal setup with crosstool-ng buildroot: improve directory location: move out/dl inside out/buildroot/download, and add a new out/buildroot/build level tagline: generalize, deliver more value than howto, since now howtos are starting to multiply rename all top scripts to separate words with hyphen more consistently, e.g. run-gdb instead of rungdb getvar: list all variables gem5: make m5out section to focus all releated information at Prevent m5term Text file busy when rebuilding gem5 while it is running.
27 lines
1.0 KiB
Bash
Executable File
27 lines
1.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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# https://github.com/cirosantilli/linux-kernel-module-cheat#gem5-run-benchmark
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set -eu
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root_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
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outfile="${root_dir}/out/gem5-bench-dhrystone.txt"
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arch=aarch64
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cmd="./run -a '$arch' --gem5 --eval-busybox '/gem5.sh'"
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# These cache sizes roughly match the ARM Cortex A75
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# https://en.wikipedia.org/wiki/ARM_Cortex-A75
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restore='-l 1 -- --cpu-type=HPI --restore-with-cpu=HPI --caches --l2cache --l1d_size=64kB --l1i_size=64kB --l2_size=256kB'
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# Generate a checkpoint after Linux boots, using the faster and less detailed CPU.
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# The boot takes a while, be patient young Padawan.
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eval "$cmd"
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printf 'n cycles\n' > "$outfile"
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for n in 1000 10000 100000; do
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# Restore the most recent checkpoint taken with the more detailed and slower HPI CPU,
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# and run the benchmark with different parameters. We skip the boot completely, saving time!
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eval "${cmd} --gem5-readfile 'dhrystone ${n}' ${restore}" &>/dev/null
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printf "${n} " >> "$outfile"
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./gem5-stat -a "$arch" >> "$outfile"
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done
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