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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 ${TMPDIR:-/tmp}/vfio-selftests-devices. This will avoid the
need for the run.sh script.
Reviewed-by: Alex Mastro <amastro@fb.com>
Tested-by: Alex Mastro <amastro@fb.com>
Reviewed-by: Raghavendra Rao Ananta <rananta@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20251126231733.3302983-3-dmatlack@google.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
43 lines
964 B
Bash
Executable File
43 lines
964 B
Bash
Executable File
# SPDX-License-Identifier: GPL-2.0-or-later
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readonly DEVICES_DIR="${TMPDIR:-/tmp}/vfio-selftests-devices"
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function write_to() {
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# Unfortunately set -x does not show redirects so use echo to manually
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# tell the user what commands are being run.
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echo "+ echo \"${2}\" > ${1}"
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echo "${2}" > ${1}
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}
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function get_driver() {
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if [ -L /sys/bus/pci/devices/${1}/driver ]; then
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basename $(readlink -m /sys/bus/pci/devices/${1}/driver)
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fi
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}
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function bind() {
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write_to /sys/bus/pci/drivers/${2}/bind ${1}
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}
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function unbind() {
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write_to /sys/bus/pci/drivers/${2}/unbind ${1}
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}
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function set_sriov_numvfs() {
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write_to /sys/bus/pci/devices/${1}/sriov_numvfs ${2}
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}
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function get_sriov_numvfs() {
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if [ -f /sys/bus/pci/devices/${1}/sriov_numvfs ]; then
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cat /sys/bus/pci/devices/${1}/sriov_numvfs
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fi
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}
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function set_driver_override() {
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write_to /sys/bus/pci/devices/${1}/driver_override ${2}
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}
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function clear_driver_override() {
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set_driver_override ${1} ""
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}
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