Re: [PATCH 1/1] kernel-selftest: add it

[Dengke Du <dengke.du@windriver.com>]

Please ignore this, thanks!


On 2018年07月06日 15:51, Dengke Du wrote:
> The framework for kernel-selftest, this framework contains many aspect,
> such as bpf, we should enable bpf kernel feature, this enable bpf syscall.
>
> How to test?
>      On target, enter directory: /opt/kselftest/bpf/, run "./test_align 0 11"
> this command test all the bpf align testcases.
>
> Results:
>      Test   0: mov ... PASS
>      Test   1: shift ... PASS
>      Test   2: addsub ... PASS
>      Test   3: mul ... PASS
>      Test   4: unknown shift ... PASS
>      Test   5: unknown mul ... PASS
>      Test   6: packet const offset ... PASS
>      Test   7: packet variable offset ... PASS
>      Test   8: packet variable offset 2 ... PASS
>      Test   9: dubious pointer arithmetic ... PASS
>      Test  10: variable subtraction ... PASS
>      Test  11: pointer variable subtraction ... PASS
>      Results: 12 pass 0 fail
>
> Signed-off-by: Dengke Du <dengke.du@windriver.com>
> ---
>   .../kernel-selftest/kernel-selftest.bb             | 94 ++++++++++++++++++++++
>   meta/recipes-kernel/linux/linux-yocto.inc          |  1 +
>   2 files changed, 95 insertions(+)
>   create mode 100644 meta/recipes-kernel/kernel-selftest/kernel-selftest.bb
>
> diff --git a/meta/recipes-kernel/kernel-selftest/kernel-selftest.bb b/meta/recipes-kernel/kernel-selftest/kernel-selftest.bb
> new file mode 100644
> index 0000000..c976e7b
> --- /dev/null
> +++ b/meta/recipes-kernel/kernel-selftest/kernel-selftest.bb
> @@ -0,0 +1,94 @@
> +SUMMARY = "Kernel selftest for Linux"
> +DESCRIPTION = "Kernel selftest for Linux"
> +LICENSE = "GPLv2"
> +
> +DEPENDS = " \
> +    elfutils \
> +    libcap \
> +    libcap-ng \
> +    fuse \
> +    util-linux \
> +    rsync-native \
> +"
> +
> +do_configure[depends] += "virtual/kernel:do_shared_workdir"
> +
> +inherit linux-kernel-base kernel-arch
> +
> +do_populate_lic[depends] += "virtual/kernel:do_patch"
> +
> +inherit kernelsrc
> +
> +S = "${WORKDIR}/${BP}"
> +
> +# The LDFLAGS is required or some old kernels fails due missing
> +# symbols and this is preferred than requiring patches to every old
> +# supported kernel.
> +LDFLAGS="-ldl -lutil"
> +
> +EXTRA_OEMAKE = '\
> +    CROSS_COMPILE=${TARGET_PREFIX} \
> +    ARCH=${ARCH} \
> +    CC="${CC}" \
> +    AR="${AR}" \
> +    LD="${LD}" \
> +    EXTRA_CFLAGS="-ldw" \
> +    ${PACKAGECONFIG_CONFARGS} \
> +'
> +
> +EXTRA_OEMAKE += "\
> +    'DESTDIR=${D}' \
> +    'prefix=${prefix}' \
> +    'bindir=${bindir}' \
> +    'sharedir=${datadir}' \
> +    'sysconfdir=${sysconfdir}' \
> +    'sharedir=${@os.path.relpath(datadir, prefix)}' \
> +    'mandir=${@os.path.relpath(mandir, prefix)}' \
> +    'infodir=${@os.path.relpath(infodir, prefix)}' \
> +"
> +
> +KERNEL_SELFTEST_SRC ?= "Makefile \
> +             include \
> +             tools \
> +"
> +
> +# Add bpf selftest now, other can be added later.
> +do_compile () {
> +	# Linux kernel build system is expected to do the right thing
> +	unset CFLAGS
> +	oe_runmake -C ${S}/tools/testing/selftests/bpf
> +}
> +
> +# On target, enter /opt/kselftest/bpf directory, run "./test_align 0 11"
> +# The test_align testcase test the bpf instruction set, the testcase defined here:
> +# https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/tree/tools/testing/selftests/bpf/test_align.c#n47
> +do_install () {
> +	# Linux kernel build system is expected to do the right thing
> +	unset CFLAGS
> +	mkdir -p ${D}/opt/kselftest/bpf
> +	install -m 0755 ${B}/tools/testing/selftests/bpf/test_align ${D}/opt/kselftest/bpf/
> +}
> +
> +do_configure[prefuncs] += "copy_perf_source_from_kernel remove_clang_related"
> +python copy_perf_source_from_kernel() {
> +    sources = (d.getVar("KERNEL_SELFTEST_SRC") or "").split()
> +    src_dir = d.getVar("STAGING_KERNEL_DIR")
> +    dest_dir = d.getVar("S")
> +    bb.utils.mkdirhier(dest_dir)
> +    for s in sources:
> +        src = oe.path.join(src_dir, s)
> +        dest = oe.path.join(dest_dir, s)
> +        if os.path.isdir(src):
> +            oe.path.copytree(src, dest)
> +        else:
> +            bb.utils.copyfile(src, dest)
> +}
> +
> +remove_clang_related() {
> +	sed -i -e '/test_pkt_access/d' -e '/test_pkt_md_access/d' ${S}/tools/testing/selftests/bpf/Makefile
> +}
> +
> +PACKAGE_ARCH = "${MACHINE_ARCH}"
> +
> +INHIBIT_PACKAGE_DEBUG_SPLIT="1"
> +FILES_${PN} += "/opt/kselftest/bpf/*"
> diff --git a/meta/recipes-kernel/linux/linux-yocto.inc b/meta/recipes-kernel/linux/linux-yocto.inc
> index 1ebfb60..362d6d8 100644
> --- a/meta/recipes-kernel/linux/linux-yocto.inc
> +++ b/meta/recipes-kernel/linux/linux-yocto.inc
> @@ -72,3 +72,4 @@ addtask kernel_configcheck after do_configure before do_compile
>   
>   # enable kernel-sample for oeqa/runtime/cases's ksample.py test
>   KERNEL_FEATURES_append_qemuall=" features/kernel-sample/kernel-sample.scc"
> +KERNEL_FEATURES_append = " ${@bb.utils.contains('DISTRO_FEATURES', 'ptest', 'features/bpf/bpf.scc', '', d)}"