Re: [PATCH HID for-next v1 1/9] selftests: hid: add vmtest.sh

10 Jan 2023

On Tue, Jan 10, 2023 at 1:43 AM Benjamin Tissoires
benjamin.tissoires@redhat.com wrote:
...
On Mon, Jan 9, 2023 at 6:56 PM sdf@google.com wrote:
...
On 01/09, Stanislav Fomichev wrote:
...
On 01/06, Benjamin Tissoires wrote:
...
Similar-ish in many points from the script in selftests/bpf, with a few
differences:

relies on boot2container instead of a plain qemu image (meaning that
we can take any container in a registry as a base)
runs in the hid selftest dir, and such uses the test program from

there
...

the working directory to store the config is in
tools/selftests/hid/results

Signed-off-by: Benjamin Tissoires benjamin.tissoires@redhat.com
...
Sorry, I've completely missed this. I wasn't on CC and assumed
that was some sort of a repost. Going through the changes right now.
Hmmm, or maybe I shouldn't? This seems to be bases on some other tree;
can't find tools/testing/selftests/hid/Makefile (from patch #2) in neither
bpf nor bpf-next.
These changes are based on
https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git/ branch
for-6.3/hid-bpf, so going through the HID tree, not the bpf one.
I Cce-ed the bpf mailing list for visibility, in case I made an
obvious error, but this doesn't impact bpf core, so reviews are
appreciated, but not mandatory from the bpf side of things :)
Cool, thanks, in this case I'm not feeling guilty about missing it on Friday :-)
...
...
Alexei/Daniel/Andrii, what's the process with these series?
...
One question here: is it worth it extending bpf/vmtest.sh instead
to support boot2container? Why new script with a bunch of copy-paste
is a better deal?
Good question. There were a few things that made me copy/paste part of
the script:

the bpf one is relying on the bpf rootfs image that, as a subsystem

maintainer of another subsystem than bpf don't control

the bpf one is hardcoding which program to launch, and I want another one
the bpf one is in a different directory which would feel weird to

call when running selftests/hid

I want a minimum control over the script so that a change in the bpf

tree doesn't accidentally break the hid tree
I think using the boot2container initramfs solves the rootfs issue,
because the initramfs is generic and just consists of a script around
podman to start a container. This way I can run the test suite on any
distribution without having to build any distro image. I should also
be able to start a scratch container without anything in it given that
the only thing that matters is the binary we start as a command
(though we won't be able to start a shell in the target VM).
Solving the second and third point could probably be done by
encapsulating the call to bpf/vmtest.sh from hid.
But for the fourth point, I believe that the bpf script is not generic
enough to be reused by other subsystems as it relies on the bpf CI,
mostly to generate the rootfs.
Also note that boot2container is a little bit more verbose in terms of
logs, as it's not just a plain qemu boot to a known rootfs, but it
starts podman and another container at the end to gather the results.
[..]
...
So maybe a solution would be to add a vmtest make target at the
selftests root directory, that would be generic enough to be run in
any subsystem. There are a few other users of qemu in selftests, but
each of them has a slightly different use of qemu.
Agreed, that seems like the ideal place to put it. Maybe we can unify
them all at some point. And maybe the bpf subsystem can also benefit
by simplifying our images, idk.
(but, obviously, not willing to block your changes, this is all "nice
to have" category)
...
Also, FWIW, boot2container is currently only providing initramfs for
x86_64 and arm64. Thus, using boot2container now for bpf means that we
would drop s390x, which is probably not the best move forward. We can
surely extend the targets, but not sure what plans Martin has on this
side.
Noted. Although I have no background on why we run s390x and whether
we really want to continue to run it..
...
For reference, boot2container project:
https://gitlab.freedesktop.org/mupuf/boot2container/
Cheers,
Benjamin
...
...
...

tools/testing/selftests/hid/.gitignore    |   1 +
 tools/testing/selftests/hid/config.common | 241 ++++++++++++++++++
 tools/testing/selftests/hid/config.x86_64 |   4 +
 tools/testing/selftests/hid/vmtest.sh     | 284 ++++++++++++++++++++++
 4 files changed, 530 insertions(+)
 create mode 100644 tools/testing/selftests/hid/config.common
 create mode 100644 tools/testing/selftests/hid/config.x86_64
 create mode 100755 tools/testing/selftests/hid/vmtest.sh

diff --git a/tools/testing/selftests/hid/.gitignore
b/tools/testing/selftests/hid/.gitignore
...
index a462ca6ab2c0..995af0670f69 100644
--- a/tools/testing/selftests/hid/.gitignore
+++ b/tools/testing/selftests/hid/.gitignore
@@ -2,3 +2,4 @@ bpftool
 *.skel.h
 /tools
 hid_bpf
+results
diff --git a/tools/testing/selftests/hid/config.common
b/tools/testing/selftests/hid/config.common
...
new file mode 100644
index 000000000000..0617275d93cc
--- /dev/null
+++ b/tools/testing/selftests/hid/config.common
@@ -0,0 +1,241 @@
+CONFIG_9P_FS_POSIX_ACL=y
+CONFIG_9P_FS_SECURITY=y
+CONFIG_9P_FS=y
+CONFIG_AUDIT=y
+CONFIG_BINFMT_MISC=y
+CONFIG_BLK_CGROUP_IOLATENCY=y
+CONFIG_BLK_CGROUP=y
+CONFIG_BLK_DEV_BSGLIB=y
+CONFIG_BLK_DEV_IO_TRACE=y
+CONFIG_BLK_DEV_RAM_SIZE=16384
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_THROTTLING=y
+CONFIG_BONDING=y
+CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
+CONFIG_BOOTTIME_TRACING=y
+CONFIG_BSD_DISKLABEL=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_CFS_BANDWIDTH=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_CGROUP_DEBUG=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_HUGETLB=y
+CONFIG_CGROUP_NET_CLASSID=y
+CONFIG_CGROUP_NET_PRIO=y
+CONFIG_CGROUP_PERF=y
+CONFIG_CGROUP_PIDS=y
+CONFIG_CGROUP_RDMA=y
+CONFIG_CGROUP_SCHED=y
+CONFIG_CGROUPS=y
+CONFIG_CGROUP_WRITEBACK=y
+CONFIG_CMA_AREAS=7
+CONFIG_CMA=y
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_STAT=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPUSETS=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CRYPTO_BLAKE2B=y
+CONFIG_CRYPTO_DEV_VIRTIO=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_XXHASH=y
+CONFIG_DCB=y
+CONFIG_DEBUG_ATOMIC_SLEEP=y
+CONFIG_DEBUG_CREDENTIALS=y
+CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DEFAULT_FQ_CODEL=y
+CONFIG_DEFAULT_RENO=y
+CONFIG_DEFAULT_SECURITY_DAC=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_DEVTMPFS=y
+CONFIG_DMA_CMA=y
+CONFIG_DNS_RESOLVER=y
+CONFIG_EFI_STUB=y
+CONFIG_EFI=y
+CONFIG_EXPERT=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_EXT4_FS=y
+CONFIG_FAIL_FUNCTION=y
+CONFIG_FAULT_INJECTION_DEBUG_FS=y
+CONFIG_FAULT_INJECTION=y
+CONFIG_FB_MODE_HELPERS=y
+CONFIG_FB_TILEBLITTING=y
+CONFIG_FB_VESA=y
+CONFIG_FB=y
+CONFIG_FONT_8x16=y
+CONFIG_FONT_MINI_4x6=y
+CONFIG_FONTS=y
+CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
+CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_FUSE_FS=y
+CONFIG_FW_LOADER_USER_HELPER=y
+CONFIG_GART_IOMMU=y
+CONFIG_GENERIC_PHY=y
+CONFIG_HARDLOCKUP_DETECTOR=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_HPET=y
+CONFIG_HUGETLBFS=y
+CONFIG_HUGETLB_PAGE=y
+CONFIG_HWPOISON_INJECT=y
+CONFIG_HZ_1000=y
+CONFIG_INET=y
+CONFIG_INTEL_POWERCLAMP=y
+CONFIG_IP6_NF_FILTER=y
+CONFIG_IP6_NF_IPTABLES=y
+CONFIG_IP6_NF_NAT=y
+CONFIG_IP6_NF_TARGET_MASQUERADE=y
+CONFIG_IP_ADVANCED_ROUTER=y
+CONFIG_IP_MROUTE=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_MULTIPLE_TABLES=y
+CONFIG_IP_NF_FILTER=y
+CONFIG_IP_NF_IPTABLES=y
+CONFIG_IP_NF_NAT=y
+CONFIG_IP_NF_TARGET_MASQUERADE=y
+CONFIG_IP_PIMSM_V1=y
+CONFIG_IP_PIMSM_V2=y
+CONFIG_IP_ROUTE_MULTIPATH=y
+CONFIG_IP_ROUTE_VERBOSE=y
+CONFIG_IPV6_MIP6=y
+CONFIG_IPV6_ROUTE_INFO=y
+CONFIG_IPV6_ROUTER_PREF=y
+CONFIG_IPV6_SEG6_LWTUNNEL=y
+CONFIG_IPV6_SUBTREES=y
+CONFIG_IRQ_POLL=y
+CONFIG_JUMP_LABEL=y
+CONFIG_KARMA_PARTITION=y
+CONFIG_KEXEC=y
+CONFIG_KPROBES=y
+CONFIG_KSM=y
+CONFIG_LEGACY_VSYSCALL_NONE=y
+CONFIG_LOG_BUF_SHIFT=21
+CONFIG_LOG_CPU_MAX_BUF_SHIFT=0
+CONFIG_LOGO=y
+CONFIG_LSM="selinux,bpf,integrity"
+CONFIG_MAC_PARTITION=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MCORE2=y
+CONFIG_MEMCG=y
+CONFIG_MEMORY_FAILURE=y
+CONFIG_MINIX_SUBPARTITION=y
+CONFIG_MODULES=y
+CONFIG_NAMESPACES=y
+CONFIG_NET_9P_VIRTIO=y
+CONFIG_NET_9P=y
+CONFIG_NET_ACT_BPF=y
+CONFIG_NET_CLS_CGROUP=y
+CONFIG_NETDEVICES=y
+CONFIG_NET_EMATCH=y
+CONFIG_NETFILTER_NETLINK_LOG=y
+CONFIG_NETFILTER_NETLINK_QUEUE=y
+CONFIG_NETFILTER_XTABLES=y
+CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=y
+CONFIG_NETFILTER_XT_MATCH_BPF=y
+CONFIG_NETFILTER_XT_MATCH_COMMENT=y
+CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y
+CONFIG_NETFILTER_XT_MATCH_MARK=y
+CONFIG_NETFILTER_XT_MATCH_MULTIPORT=y
+CONFIG_NETFILTER_XT_MATCH_STATISTIC=y
+CONFIG_NETFILTER_XT_NAT=y
+CONFIG_NETFILTER_XT_TARGET_MASQUERADE=y
+CONFIG_NET_IPGRE_BROADCAST=y
+CONFIG_NET_L3_MASTER_DEV=y
+CONFIG_NETLABEL=y
+CONFIG_NET_SCH_DEFAULT=y
+CONFIG_NET_SCHED=y
+CONFIG_NET_SCH_FQ_CODEL=y
+CONFIG_NET_TC_SKB_EXT=y
+CONFIG_NET_VRF=y
+CONFIG_NET=y
+CONFIG_NF_CONNTRACK=y
+CONFIG_NF_NAT_MASQUERADE=y
+CONFIG_NF_NAT=y
+CONFIG_NLS_ASCII=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_DEFAULT="utf8"
+CONFIG_NO_HZ=y
+CONFIG_NR_CPUS=128
+CONFIG_NUMA_BALANCING=y
+CONFIG_NUMA=y
+CONFIG_NVMEM=y
+CONFIG_OSF_PARTITION=y
+CONFIG_OVERLAY_FS_INDEX=y
+CONFIG_OVERLAY_FS_METACOPY=y
+CONFIG_OVERLAY_FS_XINO_AUTO=y
+CONFIG_OVERLAY_FS=y
+CONFIG_PACKET=y
+CONFIG_PANIC_ON_OOPS=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_PCI_IOV=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI=y
+CONFIG_PHYSICAL_ALIGN=0x1000000
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PREEMPT=y
+CONFIG_PRINTK_TIME=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROFILING=y
+CONFIG_PROVE_LOCKING=y
+CONFIG_PTP_1588_CLOCK=y
+CONFIG_RC_DEVICES=y
+CONFIG_RC_LOOPBACK=y
+CONFIG_RCU_CPU_STALL_TIMEOUT=60
+CONFIG_SCHED_STACK_END_CHECK=y
+CONFIG_SCHEDSTATS=y
+CONFIG_SECURITY_NETWORK=y
+CONFIG_SECURITY_SELINUX=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_DETECT_IRQ=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_MANY_PORTS=y
+CONFIG_SERIAL_8250_NR_UARTS=32
+CONFIG_SERIAL_8250_RSA=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_NONSTANDARD=y
+CONFIG_SERIO_LIBPS2=y
+CONFIG_SGI_PARTITION=y
+CONFIG_SMP=y
+CONFIG_SOCK_CGROUP_DATA=y
+CONFIG_SOLARIS_X86_PARTITION=y
+CONFIG_SUN_PARTITION=y
+CONFIG_SYNC_FILE=y
+CONFIG_SYSVIPC=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_TASKSTATS=y
+CONFIG_TASK_XACCT=y
+CONFIG_TCP_CONG_ADVANCED=y
+CONFIG_TCP_MD5SIG=y
+CONFIG_TLS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TMPFS=y
+CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
+CONFIG_TRANSPARENT_HUGEPAGE=y
+CONFIG_TUN=y
+CONFIG_UNIXWARE_DISKLABEL=y
+CONFIG_UNIX=y
+CONFIG_USER_NS=y
+CONFIG_VALIDATE_FS_PARSER=y
+CONFIG_VETH=y
+CONFIG_VIRT_DRIVERS=y
+CONFIG_VIRTIO_BALLOON=y
+CONFIG_VIRTIO_BLK=y
+CONFIG_VIRTIO_CONSOLE=y
+CONFIG_VIRTIO_FS=y
+CONFIG_VIRTIO_NET=y
+CONFIG_VIRTIO_PCI=y
+CONFIG_VLAN_8021Q=y
+CONFIG_XFRM_SUB_POLICY=y
+CONFIG_XFRM_USER=y
+CONFIG_ZEROPLUS_FF=y
diff --git a/tools/testing/selftests/hid/config.x86_64
b/tools/testing/selftests/hid/config.x86_64
...
new file mode 100644
index 000000000000..a8721f403c21
--- /dev/null
+++ b/tools/testing/selftests/hid/config.x86_64
@@ -0,0 +1,4 @@
+CONFIG_X86_ACPI_CPUFREQ=y
+CONFIG_X86_CPUID=y
+CONFIG_X86_MSR=y
+CONFIG_X86_POWERNOW_K8=y
diff --git a/tools/testing/selftests/hid/vmtest.sh
b/tools/testing/selftests/hid/vmtest.sh
...
new file mode 100755
index 000000000000..90f34150f257
--- /dev/null
+++ b/tools/testing/selftests/hid/vmtest.sh
@@ -0,0 +1,284 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0



+set -u
+set -e



+# This script currently only works for x86_64
+ARCH="$(uname -m)"
+case "${ARCH}" in
+x86_64)

QEMU_BINARY=qemu-system-x86_64
BZIMAGE="arch/x86/boot/bzImage"
;;

+*)

echo "Unsupported architecture"
exit 1
;;

+esac
+DEFAULT_COMMAND="./hid_bpf"
+SCRIPT_DIR="$(dirname $(realpath $0))"
+OUTPUT_DIR="$SCRIPT_DIR/results"
+KCONFIG_REL_PATHS=("${SCRIPT_DIR}/config" "${SCRIPT_DIR}/config.common" "${SCRIPT_DIR}/config.${ARCH}")
...
+B2C_URL="https://gitlab.freedesktop.org/mupuf/boot2container/-/raw/master/vm2c.py"
...
+NUM_COMPILE_JOBS="$(nproc)"
+LOG_FILE_BASE="$(date +"hid_selftests.%Y-%m-%d_%H-%M-%S")"
+LOG_FILE="${LOG_FILE_BASE}.log"
+EXIT_STATUS_FILE="${LOG_FILE_BASE}.exit_status"
+CONTAINER_IMAGE="registry.fedoraproject.org/fedora:36"



+usage()
+{

cat <<EOF

+Usage: $0 [-i] [-s] [-d <output_dir>] -- [<command>]



+<command> is the command you would normally run when you are in
+tools/testing/selftests/bpf. e.g:


$0 -- ./hid_bpf


+If no command is specified and a debug shell (-s) is not requested,
+"${DEFAULT_COMMAND}" will be run by default.



+If you build your kernel using KBUILD_OUTPUT= or O= options, these
+can be passed as environment variables to the script:


O=<kernel_build_path> $0 -- ./hid_bpf


+or


KBUILD_OUTPUT=<kernel_build_path> $0 -- ./hid_bpf


+Options:


-u)             Update the boot2container script to a newer version.
-d)             Update the output directory (default: ${OUTPUT_DIR})
-j)             Number of jobs for compilation, similar to -j in make
              (default: ${NUM_COMPILE_JOBS})


-s)             Instead of powering off the VM, start an interactive
              shell. If <command> is specified, the shell runs after


              the command finishes executing



+EOF
+}



+download()
+{

local file="$1"

echo "Downloading $file..." >&2
curl -Lsf "$file" -o "${@:2}"

+}



+recompile_kernel()
+{

local kernel_checkout="$1"
local make_command="$2"

cd "${kernel_checkout}"

${make_command} olddefconfig
${make_command}

+}



+update_selftests()
+{

local kernel_checkout="$1"
local selftests_dir="${kernel_checkout}/tools/testing/selftests/hid"

cd "${selftests_dir}"
${make_command}

+}



+run_vm()
+{

local b2c="$1"
local kernel_bzimage="$2"
local command="$3"
local post_command=""

if ! which "${QEMU_BINARY}" &> /dev/null; then
      cat <<EOF



+Could not find ${QEMU_BINARY}
+Please install qemu or set the QEMU_BINARY environment variable.
+EOF

      exit 1


fi

# alpine (used in post-container requires the PATH to have /bin
export PATH=$PATH:/bin

if [[ "${debug_shell}" != "yes" ]]
then
      touch ${OUTPUT_DIR}/${LOG_FILE}


      command="mount bpffs -t bpf /sys/fs/bpf/; set -o pipefail ;



${command} 2>&1 | tee ${OUTPUT_DIR}/${LOG_FILE}"
...

      post_command="cat ${OUTPUT_DIR}/${LOG_FILE}"


else
      command="mount bpffs -t bpf /sys/fs/bpf/; ${command}"


fi

set +e
$b2c --command "${command}" \
   --kernel ${kernel_bzimage} \


   --workdir ${OUTPUT_DIR} \


   --image ${CONTAINER_IMAGE}



echo $? > ${OUTPUT_DIR}/${EXIT_STATUS_FILE}

set -e

${post_command}

+}



+is_rel_path()
+{

local path="$1"

[[ ${path:0:1} != "/" ]]

+}



+do_update_kconfig()
+{

local kernel_checkout="$1"
local kconfig_file="$2"

rm -f "$kconfig_file" 2> /dev/null

for config in "${KCONFIG_REL_PATHS[@]}"; do
      local kconfig_src="${config}"


      cat "$kconfig_src" >> "$kconfig_file"


done

+}



+update_kconfig()
+{

local kernel_checkout="$1"
local kconfig_file="$2"

if [[ -f "${kconfig_file}" ]]; then
      local local_modified="$(stat -c %Y "${kconfig_file}")"



      for config in "${KCONFIG_REL_PATHS[@]}"; do


              local kconfig_src="${config}"


              local src_modified="$(stat -c %Y "${kconfig_src}")"


              # Only update the config if it has been updated after the


              # previously cached config was created. This avoids


              # unnecessarily compiling the kernel and selftests.


              if [[ "${src_modified}" -gt "${local_modified}" ]]; then


                      do_update_kconfig "$kernel_checkout" "$kconfig_file"


                      # Once we have found one outdated configuration


                      # there is no need to check other ones.


                      break


              fi


      done


else
      do_update_kconfig "$kernel_checkout" "$kconfig_file"


fi

+}



+main()
+{

local script_dir="$(cd -P -- "$(dirname -- "${BASH_SOURCE[0]}")" &&

pwd -P)"
...

local kernel_checkout=$(realpath "${script_dir}"/../../../../)
# By default the script searches for the kernel in the checkout

directory but
...

# it also obeys environment variables O= and KBUILD_OUTPUT=
local kernel_bzimage="${kernel_checkout}/${BZIMAGE}"
local command="${DEFAULT_COMMAND}"
local update_b2c="no"
local debug_shell="no"

while getopts ':hsud:j:' opt; do
      case ${opt} in


      u)


              update_b2c="yes"


              ;;


      d)


              OUTPUT_DIR="$OPTARG"


              ;;


      j)


              NUM_COMPILE_JOBS="$OPTARG"


              ;;


      s)


              command="/bin/sh"


              debug_shell="yes"


              ;;


      h)


              usage


              exit 0


              ;;


      \? )


              echo "Invalid Option: -$OPTARG"


              usage


              exit 1


              ;;


      : )


              echo "Invalid Option: -$OPTARG requires an argument"


              usage


              exit 1


              ;;


      esac


done
shift $((OPTIND -1))

# trap 'catch "$?"' EXIT

if [[ "${debug_shell}" == "no" ]]; then
      if [[ $# -eq 0 ]]; then


              echo "No command specified, will run ${DEFAULT_COMMAND} in the vm"


      else


              command="$@"



              if [[ "${command}" == "/bin/bash" || "${command}" == "bash" ]]


              then


                      debug_shell="yes"


              fi


      fi


fi

local kconfig_file="${OUTPUT_DIR}/latest.config"
local make_command="make -j ${NUM_COMPILE_JOBS}

KCONFIG_CONFIG=${kconfig_file}"
...


# Figure out where the kernel is being built.
# O takes precedence over KBUILD_OUTPUT.
if [[ "${O:=""}" != "" ]]; then
      if is_rel_path "${O}"; then


              O="$(realpath "${PWD}/${O}")"


      fi


      kernel_bzimage="${O}/${BZIMAGE}"


      make_command="${make_command} O=${O}"


elif [[ "${KBUILD_OUTPUT:=""}" != "" ]]; then
      if is_rel_path "${KBUILD_OUTPUT}"; then


              KBUILD_OUTPUT="$(realpath "${PWD}/${KBUILD_OUTPUT}")"


      fi


      kernel_bzimage="${KBUILD_OUTPUT}/${BZIMAGE}"


      make_command="${make_command} KBUILD_OUTPUT=${KBUILD_OUTPUT}"


fi

local b2c="${OUTPUT_DIR}/vm2c.py"

echo "Output directory: ${OUTPUT_DIR}"

mkdir -p "${OUTPUT_DIR}"
update_kconfig "${kernel_checkout}" "${kconfig_file}"

recompile_kernel "${kernel_checkout}" "${make_command}"

if [[ "${update_b2c}" == "no" && ! -f "${b2c}" ]]; then
      echo "vm2c script not found in ${b2c}"


      update_b2c="yes"


fi

if [[ "${update_b2c}" == "yes" ]]; then
      download $B2C_URL $b2c


      chmod +x $b2c


fi

update_selftests "${kernel_checkout}" "${make_command}"
run_vm $b2c "${kernel_bzimage}" "${command}"
if [[ "${debug_shell}" != "yes" ]]; then
      echo "Logs saved in ${OUTPUT_DIR}/${LOG_FILE}"


fi

exit $(cat ${OUTPUT_DIR}/${EXIT_STATUS_FILE})

+}



+main "$@"
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Re: [PATCH HID for-next v1 1/9] selftests: hid: add vmtest.sh

+main "$@"