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45cd84bd7a
The test opens any DRM devices so that the shell has fdinfo files containing the DRM data. The test then uses perf stat to make sure the events can be read. Signed-off-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20250624231837.179536-4-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
78 lines
1.4 KiB
Bash
Executable file
78 lines
1.4 KiB
Bash
Executable file
#!/bin/bash
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# DRM PMU
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# SPDX-License-Identifier: GPL-2.0
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set -e
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output=$(mktemp /tmp/perf.drm_pmu.XXXXXX.txt)
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cleanup() {
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rm -f "${output}"
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trap - EXIT TERM INT
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}
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trap_cleanup() {
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echo "Unexpected signal in ${FUNCNAME[1]}"
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cleanup
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exit 1
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}
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trap trap_cleanup EXIT TERM INT
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# Array to store file descriptors and device names
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declare -A device_fds
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# Open all devices and store file descriptors. Opening the device will create a
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# /proc/$$/fdinfo file containing the DRM statistics.
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fd_count=3 # Start with file descriptor 3
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for device in /dev/dri/*
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do
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if [[ ! -c "$device" ]]
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then
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continue
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fi
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major=$(stat -c "%Hr" "$device")
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if [[ "$major" != 226 ]]
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then
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continue
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fi
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echo "Opening $device"
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eval "exec $fd_count<\"$device\""
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echo "fdinfo for: $device (FD: $fd_count)"
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cat "/proc/$$/fdinfo/$fd_count"
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echo
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device_fds["$device"]="$fd_count"
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fd_count=$((fd_count + 1))
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done
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if [[ ${#device_fds[@]} -eq 0 ]]
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then
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echo "No DRM devices found [Skip]"
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cleanup
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exit 2
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fi
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# For each DRM event
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err=0
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for p in $(perf list --raw-dump drm-)
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do
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echo -n "Testing perf stat of $p. "
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perf stat -e "$p" --pid=$$ true > "$output" 2>&1
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if ! grep -q "$p" "$output"
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then
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echo "Missing DRM event in: [Failed]"
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cat "$output"
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err=1
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else
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echo "[OK]"
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fi
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done
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# Close all file descriptors
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for fd in "${device_fds[@]}"; do
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eval "exec $fd<&-"
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done
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# Finished
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cleanup
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exit $err
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