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#!/bin/bash
# Copyright © 2016-2017 Inria. All rights reserved.
# See COPYING in top-level directory.
# This tool exports a topology as a Linux sysfs filesystem inside the
# output directory given as the first argument.
# The goal is to test the Linux import code back from there.
#
# It may be used to export from XML by setting HWLOC_XMLFILE=file.xml in the environment,
# or from synthetic by setting HWLOC_SYNTHETIC="node:4 core:4 pu:2".
#
# The export isn't complete. It lacks /proc/cpuinfo and several other files (see below).
# But at least it takes care of generating the annoying files (bitmasks for each cpu and node).
if test "x$1" = "x"; then
echo "Missing output directory argument."
exit 1
fi
outdir="$1"
Ppus=$(hwloc-calc -I pu --po --sep " " root)
for Ppu in $Ppus; do
Lpu=$(hwloc-calc --pi --lo -I pu pu:$Ppu)
echo "Exporting PU L#${Lpu} = P#${Ppu}..."
mkdir -p "$outdir/sys/devices/system/cpu/cpu${Ppu}/topology"
Lcore=$(hwloc-calc -I core pu:$Lpu)
Pcore=$(hwloc-calc --po -I core pu:$Lpu)
if test "x$Lcore" != x; then
echo " Adding core L#${Lcore} = P#${Pcore}..."
echo $Pcore > "$outdir/sys/devices/system/cpu/cpu${Ppu}/topology/core_id"
hwloc-calc core:$Lcore | sed -e 's/0x//g' -e 's/,,/,00000000,/g' > "$outdir/sys/devices/system/cpu/cpu${Ppu}/topology/thread_siblings"
# FIXME: thread_siblings_list isn't used so far
else
echo " No core."
fi
Lpack=$(hwloc-calc -I pack pu:$Lpu)
Ppack=$(hwloc-calc --po -I pack pu:$Lpu)
if test "x$Lpack" != x; then
echo " Adding package L#${Lpack} = P#${Ppack}..."
echo $Ppack > "$outdir/sys/devices/system/cpu/cpu${Ppu}/topology/physical_package_id"
hwloc-calc pack:$Lpack | sed -e 's/0x//g' -e 's/,,/,00000000,/g' > "$outdir/sys/devices/system/cpu/cpu${Ppu}/topology/core_siblings"
# FIXME: core_siblings_list isn't used so far
else
echo "No package."
fi
Lnumas=$(hwloc-calc -I numanode pu:$Lpu --sep " ")
if test "x$Lnumas" != x; then
# 2.0 with always NUMA node but possibly multiple of them
for Lnuma in $Lnumas; do
Pnuma=$(hwloc-calc --po -I numanode numa:$Lnuma)
echo " Adding NUMAnode L#${Lnuma} = P#${Pnuma}..."
mkdir -p "$outdir/sys/devices/system/node/node${Pnuma}"
hwloc-calc numanode:$Lnuma | sed -e 's/0x//g' -e 's/,,/,00000000,/g' > "$outdir/sys/devices/system/node/node${Pnuma}/cpumap"
bytes=$(hwloc-info numanode:$Lnuma | sed -rn -e 's/^ local memory = //p')
echo "Node $Pnuma MemTotal: "$((bytes/1024))" kB" > "$outdir/sys/devices/system/node/node${Pnuma}/meminfo"
done
else
# 1.x with single local NUMA node but possibly none
echo " Adding single NUMAnode L#0 = P#0..."
mkdir -p "$outdir/sys/devices/system/node/node0"
hwloc-calc all | sed -e 's/0x//g' -e 's/,,/,00000000,/g' > "$outdir/sys/devices/system/node/node0/cpumap"
bytes=$(hwloc-info root | sed -rn -e 's/^ local memory = //p')
echo "Node 0 MemTotal: "$((bytes/1024))" kB" > "$outdir/sys/devices/system/node/node0/meminfo"
fi
# FIXME: symlinks between cpu and node aren't needed so far
cachetypes=$(hwloc-info --ancestors pu:$Lpu | sed -nre 's/^ full type = //p' | grep -i Cache)
index=0
for cachetype in $cachetypes; do
mkdir -p "$outdir/sys/devices/system/cpu/cpu${Ppu}/cache/index${index}"
hwloc-info --ancestor $cachetype pu:${Lpu} | sed -rn -e 's/^ cpuset = //p' | sed -e 's/0x//g' -e 's/,,/,00000000,/g' > "$outdir/sys/devices/system/cpu/cpu${Ppu}/cache/index${index}/shared_cpu_map"
hwloc-info --ancestor $cachetype pu:${Lpu} | sed -rn -e 's/^ attr cache depth = //p' > "$outdir/sys/devices/system/cpu/cpu${Ppu}/cache/index${index}/level"
hwloc-info --ancestor $cachetype pu:${Lpu} | sed -rn -e 's/^ attr cache type = //p' > "$outdir/sys/devices/system/cpu/cpu${Ppu}/cache/index${index}/type"
bytes=$(hwloc-info --ancestor $cachetype pu:${Lpu} | sed -rn -e 's/^ attr cache size = //p')
echo $((bytes/1024))K > "$outdir/sys/devices/system/cpu/cpu${Ppu}/cache/index${index}/size"
hwloc-info --ancestor $cachetype pu:${Lpu} | sed -rn -e 's/^ attr cache line size = //p' > "$outdir/sys/devices/system/cpu/cpu${Ppu}/cache/index${index}/coherency_line_size"
ways=$(hwloc-info --ancestor $cachetype pu:${Lpu} | sed -rn -e 's/^ attr cache ways = //p')
echo 1 > "$outdir/sys/devices/system/cpu/cpu${Ppu}/cache/index${index}/physical_line_partition"
echo $((bytes/ways)) > "$outdir/sys/devices/system/cpu/cpu${Ppu}/cache/index${index}/number_of_sets"
echo $ways > "$outdir/sys/devices/system/cpu/cpu${Ppu}/cache/index${index}/ways_of_associativity"
index=$((index+1))
done
done
# FIXME: /sys/devices/system/cpu/{online,offline,possible,present,kernel_max}
# command-line tools look for /proc to autoguess that -i means fake fsroot
mkdir -p "$outdir/proc"
# FIXME: /proc/cpuinfo
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