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#!/bin/bash
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# If already installed, just return
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command -v perf && {
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echo "perf is already installed."
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return 0
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}
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[[ "$(whoami)" != "root" ]] && {
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echo "Expected to run as root"
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return 1
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}
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# Under WSL2, perf has to be installed from source
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if grep --silent 'WSL2' <(uname -r); then
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echo "WSL detected. perf must be built from source"
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sudo apt-get install flex bison python3-dev liblzma-dev libnuma-dev zlib1g libperl-dev libgtk2.0-dev libslang2-dev systemtap-sdt-dev libelf-dev binutils-dev libbabeltrace-dev libdw-dev libunwind-dev libiberty-dev --yes
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git clone --depth 1 https://github.com/microsoft/WSL2-Linux-Kernel ~/WSL2-Linux-Kernel
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make -Wno-error -j8 -C ~/WSL2-Linux-Kernel/tools/perf
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sudo cp ~/WSL2-Linux-Kernel/tools/perf/perf /usr/local/bin
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rm -rf ~/WSL2-Linux-Kernel
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else
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apt-get install "linux-tools-$(uname -r)" linux-tools-generic -y
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fi
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