kernel-selftest: Add a recipe on kernel selftest

The recipe builds the framework for kernel-selftest. Now, it just
contains two sets of testcase, bpf and vm. We will append more to
this recipe.

The following kernel config fragments must be manually enabled,
i.e. in local.conf, to use this test suite.
KERNEL_FEATURES_append += "features/bpf/bpf.scc \
                        cfg/debug-kselftest.scc \
                   features/hugetlb/hugetlb.scc \
"

Signed-off-by: Hongzhi.Song <hongzhi.song@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-kernel/kernel-selftest/kernel-selftest.bb

@@ -0,0 +1,104 @@
+SUMMARY = "Kernel selftest for Linux"
+DESCRIPTION = "Kernel selftest for Linux"
+LICENSE = "GPLv2"
+
+LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7 \
+"
+
+# for musl libc
+SRC_URI_libc-musl += "file://userfaultfd.patch \
+                      file://0001-bpf-test_progs.c-add-support-for-musllibc.patch \
+"
+
+PACKAGECONFIG ??= "bpf vm"
+
+PACKAGECONFIG[bpf] = ",,elfutils libcap libcap-ng rsync-native,"
+PACKAGECONFIG[vm] = ",,,libgcc bash"
+
+do_patch[depends] += "virtual/kernel:do_shared_workdir"
+
+inherit linux-kernel-base kernel-arch
+
+do_populate_lic[depends] += "virtual/kernel:do_patch"
+
+S = "${WORKDIR}/${BP}"
+
+# now we just test bpf and vm
+# we will append other kernel selftest in the future
+TEST_LIST = "bpf \
+             vm \
+"
+
+EXTRA_OEMAKE = '\
+    CROSS_COMPILE=${TARGET_PREFIX} \
+    ARCH=${ARCH} \
+    CC="${CC}" \
+    AR="${AR}" \
+    LD="${LD}" \
+'
+
+EXTRA_OEMAKE += "\
+    'DESTDIR=${D}' \
+"
+
+KERNEL_SELFTEST_SRC ?= "Makefile \
+                        include \
+                        tools \
+                        scripts \
+                        arch \
+			COPYING \
+"
+
+python __anonymous () {
+    import re
+
+    var = d.getVar('TARGET_CC_ARCH')
+    pattern = '_FORTIFY_SOURCE=[^0]'
+
+    if re.search(pattern, var):
+        d.appendVar('TARGET_CC_ARCH', " -O")
+}
+
+do_compile() {
+    for i in ${TEST_LIST}
+    do
+        oe_runmake -C ${S}/tools/testing/selftests/${i}
+    done
+}
+
+do_install() {
+    for i in ${TEST_LIST}
+    do
+        oe_runmake -C ${S}/tools/testing/selftests/${i} INSTALL_PATH=${D}/usr/kernel-selftest/${i} install
+    done
+
+    chown root:root  -R ${D}/usr/kernel-selftest
+}
+
+do_configure() {
+    :
+}
+
+do_patch[prefuncs] += "copy_kselftest_source_from_kernel remove_clang_related"
+python copy_kselftest_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} += "/usr/kernel-selftest"