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#!/bin/sh
#
# Copyright (C) 2026 Danilo M. <danix@danix.xyz>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# gpu.sh: VRAM and engine cycles summed once per xe client id, units
# honoured, other drivers ignored; nothing at all when no xe client is found.
set -e
dir=$(dirname "$0")
tmp=$(mktemp)
trap 'rm -f "$tmp"' EXIT
printf '%s\n' \
"/proc/1/fdinfo/7:drm-driver: xe" \
"/proc/1/fdinfo/7:drm-client-id: 38" \
"/proc/1/fdinfo/7:drm-resident-vram0: 1024 KiB" \
"/proc/1/fdinfo/7:drm-cycles-rcs: 30" \
"/proc/1/fdinfo/7:drm-total-cycles-rcs: 1000" \
"/proc/1/fdinfo/10:drm-driver: xe" \
"/proc/1/fdinfo/10:drm-client-id: 38" \
"/proc/1/fdinfo/10:drm-resident-vram0: 1024 KiB" \
"/proc/1/fdinfo/10:drm-cycles-rcs: 30" \
"/proc/1/fdinfo/10:drm-total-cycles-rcs: 1000" \
"/proc/2/fdinfo/5:drm-driver: xe" \
"/proc/2/fdinfo/5:drm-client-id: 40" \
"/proc/2/fdinfo/5:drm-resident-vram0: 2 MiB" \
"/proc/2/fdinfo/5:drm-cycles-ccs: 7" \
"/proc/2/fdinfo/5:drm-total-cycles-ccs: 900" \
"/proc/3/fdinfo/4:drm-driver: amdgpu" \
"/proc/3/fdinfo/4:drm-client-id: 1" \
"/proc/3/fdinfo/4:drm-resident-vram0: 9 GiB" > "$tmp"
got=$(sh "$dir/gpu.sh" "$tmp")
[ "$got" = "$((1024 * 1024 + 2 * 1024 * 1024)) 30 1000 7 900" ] || { echo "gpu: got '$got'"; exit 1; }
: > "$tmp"
got=$(sh "$dir/gpu.sh" "$tmp")
[ -z "$got" ] || { echo "empty: got '$got'"; exit 1; }
echo ok
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