This reverts commit a5c6bc590094a1a73cf6fa3f505e1945d2bf2461.
The general approach described in commit e076eaca5906 ("selftests: break
the dependency upon local header files") was taken one step too far
here: it should not have been extended to include the syscall numbers.
This is because doing so would require per-arch support in
tools/include/uapi, and no such support exists.
This revert fixes two separate reports of test failures, from Dave
Hansen[1], and Li Wang[2]. An excerpt of Dave's report:
Before this commit (a5c6bc590094a1a73cf6fa3f505e1945d2bf2461) things
are fine. But after, I get:
running PKEY tests for unsupported CPU/OS
An excerpt of Li's report:
I just found that mlock2_() return a wrong value in mlock2-test
[1] https://lore.kernel.org/dc585017-6740-4cab-a536-b12b37a7582d@xxxxxxxxx
[2] https://lore.kernel.org/CAEemH2eW=UMu9+turT2jRie7+6ewUazXmA6kL+VBo3cGDGU6RA@xxxxxxxxxxxxxx
Fixes: a5c6bc590094 ("selftests/mm: remove local __NR_* definitions")
Cc: stable@xxxxxxxxxxxxxxx
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Li Wang <liwang@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Jeff Xu <jeffxu@xxxxxxxxxxxx>
Cc: Andrei Vagin <avagin@xxxxxxxxxx>
Cc: Axel Rasmussen <axelrasmussen@xxxxxxxxxx>
Cc: Christian Brauner <brauner@xxxxxxxxxx>
Cc: Kees Cook <kees@xxxxxxxxxx>
Cc: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Cc: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
---
tools/testing/selftests/mm/hugepage-mremap.c | 2 +-
tools/testing/selftests/mm/ksm_functional_tests.c | 8 +++++++-
tools/testing/selftests/mm/memfd_secret.c | 14 +++++++++++++-
tools/testing/selftests/mm/mkdirty.c | 8 +++++++-
tools/testing/selftests/mm/mlock2.h | 1 -
tools/testing/selftests/mm/protection_keys.c | 2 +-
tools/testing/selftests/mm/uffd-common.c | 4 ++++
tools/testing/selftests/mm/uffd-stress.c | 15 ++++++++++++++-
tools/testing/selftests/mm/uffd-unit-tests.c | 14 +++++++++++++-
9 files changed, 60 insertions(+), 8 deletions(-)
diff --git a/tools/testing/selftests/mm/hugepage-mremap.c b/tools/testing/selftests/mm/hugepage-mremap.c
index ada9156cc497..c463d1c09c9b 100644
--- a/tools/testing/selftests/mm/hugepage-mremap.c
+++ b/tools/testing/selftests/mm/hugepage-mremap.c
@@ -15,7 +15,7 @@
#define _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
-#include <asm-generic/unistd.h>
+#include <unistd.h>
#include <sys/mman.h>
#include <errno.h>
#include <fcntl.h> /* Definition of O_* constants */
diff --git a/tools/testing/selftests/mm/ksm_functional_tests.c b/tools/testing/selftests/mm/ksm_functional_tests.c
index 66b4e111b5a2..b61803e36d1c 100644
--- a/tools/testing/selftests/mm/ksm_functional_tests.c
+++ b/tools/testing/selftests/mm/ksm_functional_tests.c
@@ -11,7 +11,7 @@
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
-#include <asm-generic/unistd.h>
+#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
@@ -369,6 +369,7 @@ static void test_unmerge_discarded(void)
munmap(map, size);
}
+#ifdef __NR_userfaultfd
static void test_unmerge_uffd_wp(void)
{
struct uffdio_writeprotect uffd_writeprotect;
@@ -429,6 +430,7 @@ static void test_unmerge_uffd_wp(void)
unmap:
munmap(map, size);
}
+#endif
/* Verify that KSM can be enabled / queried with prctl. */
static void test_prctl(void)
@@ -684,7 +686,9 @@ int main(int argc, char **argv)
exit(test_child_ksm());
}
+#ifdef __NR_userfaultfd
tests++;
+#endif
ksft_print_header();
ksft_set_plan(tests);
@@ -696,7 +700,9 @@ int main(int argc, char **argv)
test_unmerge();
test_unmerge_zero_pages();
test_unmerge_discarded();
+#ifdef __NR_userfaultfd
test_unmerge_uffd_wp();
+#endif
test_prot_none();
diff --git a/tools/testing/selftests/mm/memfd_secret.c b/tools/testing/selftests/mm/memfd_secret.c
index 74c911aa3aea..9a0597310a76 100644
--- a/tools/testing/selftests/mm/memfd_secret.c
+++ b/tools/testing/selftests/mm/memfd_secret.c
@@ -17,7 +17,7 @@
#include <stdlib.h>
#include <string.h>
-#include <asm-generic/unistd.h>
+#include <unistd.h>
#include <errno.h>
#include <stdio.h>
#include <fcntl.h>
@@ -28,6 +28,8 @@
#define pass(fmt, ...) ksft_test_result_pass(fmt, ##__VA_ARGS__)
#define skip(fmt, ...) ksft_test_result_skip(fmt, ##__VA_ARGS__)
+#ifdef __NR_memfd_secret
+
#define PATTERN 0x55
static const int prot = PROT_READ | PROT_WRITE;
@@ -332,3 +334,13 @@ int main(int argc, char *argv[])
ksft_finished();
}
+
+#else /* __NR_memfd_secret */
+
+int main(int argc, char *argv[])
+{
+ printf("skip: skipping memfd_secret test (missing __NR_memfd_secret)\n");
+ return KSFT_SKIP;
+}
+
+#endif /* __NR_memfd_secret */
diff --git a/tools/testing/selftests/mm/mkdirty.c b/tools/testing/selftests/mm/mkdirty.c
index af2fce496912..09feeb453646 100644
--- a/tools/testing/selftests/mm/mkdirty.c
+++ b/tools/testing/selftests/mm/mkdirty.c
@@ -9,7 +9,7 @@
*/
#include <fcntl.h>
#include <signal.h>
-#include <asm-generic/unistd.h>
+#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
@@ -265,6 +265,7 @@ static void test_pte_mapped_thp(void)
munmap(mmap_mem, mmap_size);
}
+#ifdef __NR_userfaultfd
static void test_uffdio_copy(void)
{
struct uffdio_register uffdio_register;
@@ -322,6 +323,7 @@ static void test_uffdio_copy(void)
munmap(dst, pagesize);
free(src);
}
+#endif /* __NR_userfaultfd */
int main(void)
{
@@ -334,7 +336,9 @@ int main(void)
thpsize / 1024);
tests += 3;
}
+#ifdef __NR_userfaultfd
tests += 1;
+#endif /* __NR_userfaultfd */
ksft_print_header();
ksft_set_plan(tests);
@@ -364,7 +368,9 @@ int main(void)
if (thpsize)
test_pte_mapped_thp();
/* Placing a fresh page via userfaultfd may set the PTE dirty. */
+#ifdef __NR_userfaultfd
test_uffdio_copy();
+#endif /* __NR_userfaultfd */
err = ksft_get_fail_cnt();
if (err)
diff --git a/tools/testing/selftests/mm/mlock2.h b/tools/testing/selftests/mm/mlock2.h
index 1e5731bab499..4417eaa5cfb7 100644
--- a/tools/testing/selftests/mm/mlock2.h
+++ b/tools/testing/selftests/mm/mlock2.h
@@ -3,7 +3,6 @@
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
-#include <asm-generic/unistd.h>
static int mlock2_(void *start, size_t len, int flags)
{
diff --git a/tools/testing/selftests/mm/protection_keys.c b/tools/testing/selftests/mm/protection_keys.c
index a4683f2476f2..35565af308af 100644
--- a/tools/testing/selftests/mm/protection_keys.c
+++ b/tools/testing/selftests/mm/protection_keys.c
@@ -42,7 +42,7 @@
#include <sys/wait.h>
#include <sys/stat.h>
#include <fcntl.h>
-#include <asm-generic/unistd.h>
+#include <unistd.h>
#include <sys/ptrace.h>
#include <setjmp.h>
diff --git a/tools/testing/selftests/mm/uffd-common.c b/tools/testing/selftests/mm/uffd-common.c
index 717539eddf98..7ad6ba660c7d 100644
--- a/tools/testing/selftests/mm/uffd-common.c
+++ b/tools/testing/selftests/mm/uffd-common.c
@@ -673,7 +673,11 @@ int uffd_open_dev(unsigned int flags)
int uffd_open_sys(unsigned int flags)
{
+#ifdef __NR_userfaultfd
return syscall(__NR_userfaultfd, flags);
+#else
+ return -1;
+#endif
}
int uffd_open(unsigned int flags)
diff --git a/tools/testing/selftests/mm/uffd-stress.c b/tools/testing/selftests/mm/uffd-stress.c
index a4b83280998a..944d559ade21 100644
--- a/tools/testing/selftests/mm/uffd-stress.c
+++ b/tools/testing/selftests/mm/uffd-stress.c
@@ -33,10 +33,11 @@
* pthread_mutex_lock will also verify the atomicity of the memory
* transfer (UFFDIO_COPY).
*/
-#include <asm-generic/unistd.h>
+
#include "uffd-common.h"
uint64_t features;
+#ifdef __NR_userfaultfd
#define BOUNCE_RANDOM (1<<0)
#define BOUNCE_RACINGFAULTS (1<<1)
@@ -471,3 +472,15 @@ int main(int argc, char **argv)
nr_pages, nr_pages_per_cpu);
return userfaultfd_stress();
}
+
+#else /* __NR_userfaultfd */
+
+#warning "missing __NR_userfaultfd definition"
+
+int main(void)
+{
+ printf("skip: Skipping userfaultfd test (missing __NR_userfaultfd)\n");
+ return KSFT_SKIP;
+}
+
+#endif /* __NR_userfaultfd */
diff --git a/tools/testing/selftests/mm/uffd-unit-tests.c b/tools/testing/selftests/mm/uffd-unit-tests.c
index 9ff71fa1f9bf..74c8bc02b506 100644
--- a/tools/testing/selftests/mm/uffd-unit-tests.c
+++ b/tools/testing/selftests/mm/uffd-unit-tests.c
@@ -5,11 +5,12 @@
* Copyright (C) 2015-2023 Red Hat, Inc.
*/
-#include <asm-generic/unistd.h>
#include "uffd-common.h"
#include "../../../../mm/gup_test.h"
+#ifdef __NR_userfaultfd
+
/* The unit test doesn't need a large or random size, make it 32MB for now */
#define UFFD_TEST_MEM_SIZE (32UL << 20)
@@ -1558,3 +1559,14 @@ int main(int argc, char *argv[])
return ksft_get_fail_cnt() ? KSFT_FAIL : KSFT_PASS;
}
+#else /* __NR_userfaultfd */
+
+#warning "missing __NR_userfaultfd definition"
+
+int main(void)
+{
+ printf("Skipping %s (missing __NR_userfaultfd)\n", __file__);
+ return KSFT_SKIP;
+}
+
+#endif /* __NR_userfaultfd */
base-commit: 5c2b80714a515d35d52772c931ca4581f4646bac
--
2.48.1
