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fa246a1d06
Split run.sh into separate scripts (setup.sh, run.sh, cleanup.sh) to
enable multi-device testing, and prepare for VFIO selftests
automatically detecting which devices to use for testing by storing
device metadata on the filesystem.
- setup.sh takes one or more BDFs as arguments and sets up each device.
Metadata about each device is stored on the filesystem in the
directory:
${TMPDIR:-/tmp}/vfio-selftests-devices
Within this directory is a directory for each BDF, and then files in
those directories that cleanup.sh uses to cleanup the device.
- run.sh runs a selftest by passing it the BDFs of all set up devices.
- cleanup.sh takes zero or more BDFs as arguments and cleans up each
device. If no BDFs are provided, it cleans up all devices.
This split enables multi-device testing by allowing multiple BDFs to be
set up and passed into tests:
For example:
$ tools/testing/selftests/vfio/scripts/setup.sh <BDF1> <BDF2>
$ tools/testing/selftests/vfio/scripts/setup.sh <BDF3>
$ tools/testing/selftests/vfio/scripts/run.sh echo
<BDF1> <BDF2> <BDF3>
$ tools/testing/selftests/vfio/scripts/cleanup.sh
In the future, VFIO selftests can automatically detect set up devices by
inspecting ${TMPDIR:-/tmp}/vfio-selftests-devices. This will avoid the
need for the run.sh script.
Reviewed-by: Alex Mastro <amastro@fb.com>
Tested-by: Alex Mastro <amastro@fb.com>
Reviewed-by: Raghavendra Rao Ananta <rananta@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20251126231733.3302983-3-dmatlack@google.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
49 lines
992 B
Bash
Executable File
49 lines
992 B
Bash
Executable File
# SPDX-License-Identifier: GPL-2.0-or-later
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set -e
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source $(dirname -- "${BASH_SOURCE[0]}")/lib.sh
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function main() {
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local device_bdf
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local device_dir
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local numvfs
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local driver
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if [ $# = 0 ]; then
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echo "usage: $0 segment:bus:device.function ..." >&2
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exit 1
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fi
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for device_bdf in "$@"; do
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test -d /sys/bus/pci/devices/${device_bdf}
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device_dir=${DEVICES_DIR}/${device_bdf}
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if [ -d "${device_dir}" ]; then
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echo "${device_bdf} has already been set up, exiting."
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exit 0
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fi
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mkdir -p ${device_dir}
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numvfs=$(get_sriov_numvfs ${device_bdf})
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if [ "${numvfs}" ]; then
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set_sriov_numvfs ${device_bdf} 0
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echo ${numvfs} > ${device_dir}/sriov_numvfs
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fi
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driver=$(get_driver ${device_bdf})
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if [ "${driver}" ]; then
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unbind ${device_bdf} ${driver}
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echo ${driver} > ${device_dir}/driver
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fi
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set_driver_override ${device_bdf} vfio-pci
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touch ${device_dir}/driver_override
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bind ${device_bdf} vfio-pci
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touch ${device_dir}/vfio-pci
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done
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}
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main "$@"
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