[PATCH v3 1/6] selftests/mm: mseal, self_elf: fix missing __NR_mseal

[John Hubbard <jhubbard@nvidia.com>]

The selftests/mm build isn't exactly "broken", according to the current
documentation, which still claims that one must run "make headers",
before building the kselftests. However, according to the new plan to
get rid of that requirement [1], they are future-broken: attempting to
build selftests/mm *without* first running "make headers" will fail due
to not finding __NR_mseal.

Therefore, include asm-generic/unistd.h, which has all of the system
call numbers that are needed, abstracted across the various CPU arches.

[1] commit e076eaca5906 ("selftests: break the dependency upon local
header files")

Fixes: 4926c7a52de7 ("selftest mm/mseal memory sealing")
Cc: Jeff Xu <jeffxu@chromium.org>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
 tools/testing/selftests/mm/mseal_test.c | 2 +-
 tools/testing/selftests/mm/seal_elf.c   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/mm/mseal_test.c b/tools/testing/selftests/mm/mseal_test.c
index 41998cf1dcf5..58c888529f42 100644
--- a/tools/testing/selftests/mm/mseal_test.c
+++ b/tools/testing/selftests/mm/mseal_test.c
@@ -3,7 +3,7 @@
 #include <linux/mman.h>
 #include <sys/mman.h>
 #include <stdint.h>
-#include <unistd.h>
+#include <asm-generic/unistd.h>
 #include <string.h>
 #include <sys/time.h>
 #include <sys/resource.h>
diff --git a/tools/testing/selftests/mm/seal_elf.c b/tools/testing/selftests/mm/seal_elf.c
index f2babec79bb6..27bf2f84231d 100644
--- a/tools/testing/selftests/mm/seal_elf.c
+++ b/tools/testing/selftests/mm/seal_elf.c
@@ -2,7 +2,7 @@
 #define _GNU_SOURCE
 #include <sys/mman.h>
 #include <stdint.h>
-#include <unistd.h>
+#include <asm-generic/unistd.h>
 #include <string.h>
 #include <sys/time.h>
 #include <sys/resource.h>
-- 
2.45.2