[oe] [meta-oe][PATCH v5 1/1] kernel-selftest: Add a recipe on kernel selftest
Khem Raj
raj.khem at gmail.com
Mon Aug 13 18:34:11 UTC 2018
Can you rebase this on top of current master please ?
On Mon, Aug 13, 2018 at 3:28 AM Hongzhi.Song <hongzhi.song at windriver.com> wrote:
>
> 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 at windriver.com>
> ---
> .../kernel-selftest/kernel-selftest.bb | 105 ++++++
> ...bpf-test_progs.c-add-support-for-musllibc.patch | 25 ++
> ...-swap.h-micro-define-to-support-musl-libc.patch | 26 ++
> .../kernel-selftest/kernel-selftest/COPYING | 356 +++++++++++++++++++++
> .../kernel-selftest/userfaultfd.patch | 322 +++++++++++++++++++
> 5 files changed, 834 insertions(+)
> create mode 100644 meta-oe/recipes-kernel/kernel-selftest/kernel-selftest.bb
> create mode 100644 meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/0001-bpf-test_progs.c-add-support-for-musllibc.patch
> create mode 100644 meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/0001-swap.h-micro-define-to-support-musl-libc.patch
> create mode 100644 meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/COPYING
> create mode 100644 meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/userfaultfd.patch
>
> diff --git a/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest.bb b/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest.bb
> new file mode 100644
> index 000000000..e09831f76
> --- /dev/null
> +++ b/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest.bb
> @@ -0,0 +1,105 @@
> +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_unrelated"
> +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_unrelated() {
> + sed -i -e '/test_pkt_access/d' -e '/test_pkt_md_access/d' -e '/sockmap_verdict_prog/d' ${S}/tools/testing/selftests/bpf/Makefile
> + sed -i '/llc/d' ${S}/tools/testing/selftests/bpf/Makefile
> +}
> +
> +PACKAGE_ARCH = "${MACHINE_ARCH}"
> +
> +INHIBIT_PACKAGE_DEBUG_SPLIT="1"
> +FILES_${PN} += "/usr/kernel-selftest"
> diff --git a/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/0001-bpf-test_progs.c-add-support-for-musllibc.patch b/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/0001-bpf-test_progs.c-add-support-for-musllibc.patch
> new file mode 100644
> index 000000000..5f2542681
> --- /dev/null
> +++ b/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/0001-bpf-test_progs.c-add-support-for-musllibc.patch
> @@ -0,0 +1,25 @@
> +From a2e6b8fde28b743b69990a4e16c296e099631ed4 Mon Sep 17 00:00:00 2001
> +From: "Hongzhi.Song" <hongzhi.song at windriver.com>
> +Date: Mon, 23 Jul 2018 00:56:19 -0700
> +Subject: [PATCH] bpf: test_progs.c add support for musllibc
> +
> +Signed-off-by: Hongzhi.Song <hongzhi.song at windriver.com>
> +---
> + tools/testing/selftests/bpf/test_progs.c | 1 +
> + 1 file changed, 1 insertion(+)
> +
> +diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
> +index 11ee25c..21b27b7 100644
> +--- a/tools/testing/selftests/bpf/test_progs.c
> ++++ b/tools/testing/selftests/bpf/test_progs.c
> +@@ -4,6 +4,7 @@
> + * modify it under the terms of version 2 of the GNU General Public
> + * License as published by the Free Software Foundation.
> + */
> ++#define __always_inline __inline __attribute__ ((__always_inline__))
> + #include <stdio.h>
> + #include <unistd.h>
> + #include <errno.h>
> +--
> +2.11.0
> +
> diff --git a/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/0001-swap.h-micro-define-to-support-musl-libc.patch b/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/0001-swap.h-micro-define-to-support-musl-libc.patch
> new file mode 100644
> index 000000000..e2245fc4c
> --- /dev/null
> +++ b/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/0001-swap.h-micro-define-to-support-musl-libc.patch
> @@ -0,0 +1,26 @@
> +From c21dfb0dfdfec281479e267ad7fe9a8d4ba15a70 Mon Sep 17 00:00:00 2001
> +From: "Hongzhi.Song" <hongzhi.song at windriver.com>
> +Date: Tue, 17 Jul 2018 23:47:48 -0700
> +Subject: [PATCH] add micro define to support musl libc
> +
> +Signed-off-by: Hongzhi.Song <hongzhi.song at windriver.com>
> +---
> + recipe-sysroot/usr/include/linux/swab.h | 2 ++
> + 1 file changed, 2 insertions(+)
> +
> +diff --git a/recipe-sysroot/usr/include/linux/swab.h b/recipe-sysroot/usr/include/linux/swab.h
> +index afb7eb7..33efa10 100644
> +--- a/recipe-sysroot/usr/include/linux/swab.h
> ++++ b/recipe-sysroot/usr/include/linux/swab.h
> +@@ -6,6 +6,8 @@
> +
> + #include <asm/swab.h>
> +
> ++#define __always_inline __inline __attribute__ ((__always_inline__))
> ++
> + /*
> + * casts are necessary for constants, because we never know how for sure
> + * how U/UL/ULL map to __u16, __u32, __u64. At least not in a portable way.
> +--
> +2.11.0
> +
> diff --git a/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/COPYING b/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/COPYING
> new file mode 100644
> index 000000000..ca442d313
> --- /dev/null
> +++ b/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/COPYING
> @@ -0,0 +1,356 @@
> +
> + NOTE! This copyright does *not* cover user programs that use kernel
> + services by normal system calls - this is merely considered normal use
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> + Foundation, but the instance of code that it refers to (the Linux
> + kernel) is copyrighted by me and others who actually wrote it.
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> + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
> + This is free software, and you are welcome to redistribute it
> + under certain conditions; type `show c' for details.
> +
> +The hypothetical commands `show w' and `show c' should show the appropriate
> +parts of the General Public License. Of course, the commands you use may
> +be called something other than `show w' and `show c'; they could even be
> +mouse-clicks or menu items--whatever suits your program.
> +
> +You should also get your employer (if you work as a programmer) or your
> +school, if any, to sign a "copyright disclaimer" for the program, if
> +necessary. Here is a sample; alter the names:
> +
> + Yoyodyne, Inc., hereby disclaims all copyright interest in the program
> + `Gnomovision' (which makes passes at compilers) written by James Hacker.
> +
> + <signature of Ty Coon>, 1 April 1989
> + Ty Coon, President of Vice
> +
> +This General Public License does not permit incorporating your program into
> +proprietary programs. If your program is a subroutine library, you may
> +consider it more useful to permit linking proprietary applications with the
> +library. If this is what you want to do, use the GNU Library General
> +Public License instead of this License.
> diff --git a/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/userfaultfd.patch b/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/userfaultfd.patch
> new file mode 100644
> index 000000000..bed20510e
> --- /dev/null
> +++ b/meta-oe/recipes-kernel/kernel-selftest/kernel-selftest/userfaultfd.patch
> @@ -0,0 +1,322 @@
> +From c7b375747cffb627d02543d946b28525455d7d46 Mon Sep 17 00:00:00 2001
> +From: "Hongzhi.Song" <hongzhi.song at windriver.com>
> +Date: Fri, 13 Jul 2018 06:06:19 -0700
> +Subject: [PATCH] vm: add some funtions to support musl libc
> +
> +Signed-off-by: Hongzhi.Song <hongzhi.song at windriver.com>
> +---
> + tools/testing/selftests/vm/userfaultfd.c | 298 +++++++++++++++++++++++++++++++
> + 1 file changed, 298 insertions(+)
> +
> +diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c
> +index de2f9ec..dc73021 100644
> +--- a/tools/testing/selftests/vm/userfaultfd.c
> ++++ b/tools/testing/selftests/vm/userfaultfd.c
> +@@ -71,6 +71,304 @@
> +
> + #ifdef __NR_userfaultfd
> +
> ++/* Linear congruential. */
> ++#define TYPE_0 0
> ++#define BREAK_0 8
> ++#define DEG_0 0
> ++#define SEP_0 0
> ++
> ++/* x**7 + x**3 + 1. */
> ++#define TYPE_1 1
> ++#define BREAK_1 32
> ++#define DEG_1 7
> ++#define SEP_1 3
> ++
> ++/* x**15 + x + 1. */
> ++#define TYPE_2 2
> ++#define BREAK_2 64
> ++#define DEG_2 15
> ++#define SEP_2 1
> ++
> ++/* x**31 + x**3 + 1. */
> ++#define TYPE_3 3
> ++#define BREAK_3 128
> ++#define DEG_3 31
> ++#define SEP_3 3
> ++
> ++/* x**63 + x + 1. */
> ++#define TYPE_4 4
> ++#define BREAK_4 256
> ++#define DEG_4 63
> ++#define SEP_4 1
> ++
> ++/* Array versions of the above information to make code run faster.
> ++ Relies on fact that TYPE_i == i. */
> ++
> ++#define MAX_TYPES 5 /* Max number of types above. */
> ++
> ++#define __set_errno(val) (errno = (val))
> ++
> ++struct random_data
> ++ {
> ++ int32_t *fptr; /* Front pointer. */
> ++ int32_t *rptr; /* Rear pointer. */
> ++ int32_t *state; /* Array of state values. */
> ++ int rand_type; /* Type of random number generator. */
> ++ int rand_deg; /* Degree of random number generator. */
> ++ int rand_sep; /* Distance between front and rear. */
> ++ int32_t *end_ptr; /* Pointer behind state table. */
> ++ };
> ++
> ++struct random_poly_info
> ++{
> ++ int seps[MAX_TYPES];
> ++ int degrees[MAX_TYPES];
> ++};
> ++
> ++static const struct random_poly_info random_poly_info =
> ++{
> ++ { SEP_0, SEP_1, SEP_2, SEP_3, SEP_4 },
> ++ { DEG_0, DEG_1, DEG_2, DEG_3, DEG_4 }
> ++};
> ++
> ++/* If we are using the trivial TYPE_0 R.N.G., just do the old linear
> ++ congruential bit. Otherwise, we do our fancy trinomial stuff, which is the
> ++ same in all the other cases due to all the global variables that have been
> ++ set up. The basic operation is to add the number at the rear pointer into
> ++ the one at the front pointer. Then both pointers are advanced to the next
> ++ location cyclically in the table. The value returned is the sum generated,
> ++ reduced to 31 bits by throwing away the "least random" low bit.
> ++ Note: The code takes advantage of the fact that both the front and
> ++ rear pointers can't wrap on the same call by not testing the rear
> ++ pointer if the front one has wrapped. Returns a 31-bit random number. */
> ++
> ++int random_r (struct random_data *buf, int32_t *result)
> ++{
> ++ int32_t *state;
> ++
> ++ if (buf == NULL || result == NULL)
> ++ goto fail;
> ++
> ++ state = buf->state;
> ++
> ++ if (buf->rand_type == TYPE_0)
> ++ {
> ++ int32_t val = ((state[0] * 1103515245U) + 12345U) & 0x7fffffff;
> ++ state[0] = val;
> ++ *result = val;
> ++ }
> ++ else
> ++ {
> ++ int32_t *fptr = buf->fptr;
> ++ int32_t *rptr = buf->rptr;
> ++ int32_t *end_ptr = buf->end_ptr;
> ++ uint32_t val;
> ++
> ++ val = *fptr += (uint32_t) *rptr;
> ++ /* Chucking least random bit. */
> ++ *result = val >> 1;
> ++ ++fptr;
> ++ if (fptr >= end_ptr)
> ++ {
> ++ fptr = state;
> ++ ++rptr;
> ++ }
> ++ else
> ++ {
> ++ ++rptr;
> ++ if (rptr >= end_ptr)
> ++ rptr = state;
> ++ }
> ++ buf->fptr = fptr;
> ++ buf->rptr = rptr;
> ++ }
> ++ return 0;
> ++
> ++ fail:
> ++ __set_errno (EINVAL);
> ++ return -1;
> ++}
> ++
> ++/* Initialize the random number generator based on the given seed. If the
> ++ type is the trivial no-state-information type, just remember the seed.
> ++ Otherwise, initializes state[] based on the given "seed" via a linear
> ++ congruential generator. Then, the pointers are set to known locations
> ++ that are exactly rand_sep places apart. Lastly, it cycles the state
> ++ information a given number of times to get rid of any initial dependencies
> ++ introduced by the L.C.R.N.G. Note that the initialization of randtbl[]
> ++ for default usage relies on values produced by this routine. */
> ++int srandom_r (unsigned int seed, struct random_data *buf)
> ++{
> ++ int type;
> ++ int32_t *state;
> ++ long int i;
> ++ int32_t word;
> ++ int32_t *dst;
> ++ int kc;
> ++
> ++ if (buf == NULL)
> ++ goto fail;
> ++ type = buf->rand_type;
> ++ if ((unsigned int) type >= MAX_TYPES)
> ++ goto fail;
> ++
> ++ state = buf->state;
> ++ /* We must make sure the seed is not 0. Take arbitrarily 1 in this case. */
> ++ if (seed == 0)
> ++ seed = 1;
> ++ state[0] = seed;
> ++ if (type == TYPE_0)
> ++ goto done;
> ++
> ++ dst = state;
> ++ word = seed;
> ++ kc = buf->rand_deg;
> ++ for (i = 1; i < kc; ++i)
> ++ {
> ++ /* This does:
> ++ state[i] = (16807 * state[i - 1]) % 2147483647;
> ++ but avoids overflowing 31 bits. */
> ++ long int hi = word / 127773;
> ++ long int lo = word % 127773;
> ++ word = 16807 * lo - 2836 * hi;
> ++ if (word < 0)
> ++ word += 2147483647;
> ++ *++dst = word;
> ++ }
> ++
> ++ buf->fptr = &state[buf->rand_sep];
> ++ buf->rptr = &state[0];
> ++ kc *= 10;
> ++ while (--kc >= 0)
> ++ {
> ++ int32_t discard;
> ++ (void) random_r (buf, &discard);
> ++ }
> ++
> ++ done:
> ++ return 0;
> ++
> ++ fail:
> ++ return -1;
> ++}
> ++
> ++/* Initialize the state information in the given array of N bytes for
> ++ future random number generation. Based on the number of bytes we
> ++ are given, and the break values for the different R.N.G.'s, we choose
> ++ the best (largest) one we can and set things up for it. srandom is
> ++ then called to initialize the state information. Note that on return
> ++ from srandom, we set state[-1] to be the type multiplexed with the current
> ++ value of the rear pointer; this is so successive calls to initstate won't
> ++ lose this information and will be able to restart with setstate.
> ++ Note: The first thing we do is save the current state, if any, just like
> ++ setstate so that it doesn't matter when initstate is called.
> ++ Returns 0 on success, non-zero on failure. */
> ++int initstate_r (unsigned int seed, char *arg_state, size_t n,
> ++ struct random_data *buf)
> ++{
> ++ if (buf == NULL)
> ++ goto fail;
> ++
> ++ int32_t *old_state = buf->state;
> ++ if (old_state != NULL)
> ++ {
> ++ int old_type = buf->rand_type;
> ++ if (old_type == TYPE_0)
> ++ old_state[-1] = TYPE_0;
> ++ else
> ++ old_state[-1] = (MAX_TYPES * (buf->rptr - old_state)) + old_type;
> ++ }
> ++
> ++ int type;
> ++ if (n >= BREAK_3)
> ++ type = n < BREAK_4 ? TYPE_3 : TYPE_4;
> ++ else if (n < BREAK_1)
> ++ {
> ++ if (n < BREAK_0)
> ++ goto fail;
> ++
> ++ type = TYPE_0;
> ++ }
> ++ else
> ++ type = n < BREAK_2 ? TYPE_1 : TYPE_2;
> ++
> ++ int degree = random_poly_info.degrees[type];
> ++ int separation = random_poly_info.seps[type];
> ++
> ++ buf->rand_type = type;
> ++ buf->rand_sep = separation;
> ++ buf->rand_deg = degree;
> ++ int32_t *state = &((int32_t *) arg_state)[1]; /* First location. */
> ++ /* Must set END_PTR before srandom. */
> ++ buf->end_ptr = &state[degree];
> ++
> ++ buf->state = state;
> ++
> ++ srandom_r (seed, buf);
> ++
> ++ state[-1] = TYPE_0;
> ++ if (type != TYPE_0)
> ++ state[-1] = (buf->rptr - state) * MAX_TYPES + type;
> ++
> ++ return 0;
> ++
> ++ fail:
> ++ __set_errno (EINVAL);
> ++ return -1;
> ++}
> ++
> ++/* Restore the state from the given state array.
> ++ Note: It is important that we also remember the locations of the pointers
> ++ in the current state information, and restore the locations of the pointers
> ++ from the old state information. This is done by multiplexing the pointer
> ++ location into the zeroth word of the state information. Note that due
> ++ to the order in which things are done, it is OK to call setstate with the
> ++ same state as the current state
> ++ Returns 0 on success, non-zero on failure. */
> ++int setstate_r (char *arg_state, struct random_data *buf)
> ++{
> ++ int32_t *new_state = 1 + (int32_t *) arg_state;
> ++ int type;
> ++ int old_type;
> ++ int32_t *old_state;
> ++ int degree;
> ++ int separation;
> ++
> ++ if (arg_state == NULL || buf == NULL)
> ++ goto fail;
> ++
> ++ old_type = buf->rand_type;
> ++ old_state = buf->state;
> ++ if (old_type == TYPE_0)
> ++ old_state[-1] = TYPE_0;
> ++ else
> ++ old_state[-1] = (MAX_TYPES * (buf->rptr - old_state)) + old_type;
> ++
> ++ type = new_state[-1] % MAX_TYPES;
> ++ if (type < TYPE_0 || type > TYPE_4)
> ++ goto fail;
> ++
> ++ buf->rand_deg = degree = random_poly_info.degrees[type];
> ++ buf->rand_sep = separation = random_poly_info.seps[type];
> ++ buf->rand_type = type;
> ++
> ++ if (type != TYPE_0)
> ++ {
> ++ int rear = new_state[-1] / MAX_TYPES;
> ++ buf->rptr = &new_state[rear];
> ++ buf->fptr = &new_state[(rear + separation) % degree];
> ++ }
> ++ buf->state = new_state;
> ++ /* Set end_ptr too. */
> ++ buf->end_ptr = &new_state[degree];
> ++
> ++ return 0;
> ++
> ++ fail:
> ++ __set_errno (EINVAL);
> ++ return -1;
> ++}
> ++
> + static unsigned long nr_cpus, nr_pages, nr_pages_per_cpu, page_size;
> +
> + #define BOUNCE_RANDOM (1<<0)
> +--
> +2.11.0
> +
> --
> 2.11.0
>
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