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authorMichael Ellerman <mpe@ellerman.id.au>2015-09-22 14:58:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-09-22 15:09:53 -0700
commit56ed8f169e225dce1f9e40f6eee2e2dabe7d06fc (patch)
tree6ecc1d7d2eaec950afcc43130565fa0daecce574
parent67f6a029b2ccf3399783a0ff2f812666f290d94f (diff)
downloadop-kernel-dev-56ed8f169e225dce1f9e40f6eee2e2dabe7d06fc.zip
op-kernel-dev-56ed8f169e225dce1f9e40f6eee2e2dabe7d06fc.tar.gz
userfaultfd: selftest: only warn if __NR_userfaultfd is undefined
If __NR_userfaultfd is not yet defined by the arch, warn but still build and run the userfaultfd selftest successfully. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Thierry Reding <treding@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--tools/testing/selftests/vm/userfaultfd.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c
index a9e0b91..0671ae1 100644
--- a/tools/testing/selftests/vm/userfaultfd.c
+++ b/tools/testing/selftests/vm/userfaultfd.c
@@ -66,9 +66,7 @@
#include <pthread.h>
#include <linux/userfaultfd.h>
-#ifndef __NR_userfaultfd
-#error "missing __NR_userfaultfd definition"
-#endif
+#ifdef __NR_userfaultfd
static unsigned long nr_cpus, nr_pages, nr_pages_per_cpu, page_size;
@@ -631,3 +629,15 @@ 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 0;
+}
+
+#endif /* __NR_userfaultfd */
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