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Commit 56ed8f16 authored by Michael Ellerman's avatar Michael Ellerman Committed by Linus Torvalds
Browse files

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: default avatarMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: default avatarAndrea 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 67f6a029

tools/testing/selftests/vm/userfaultfd.c

+13 −3
Original line number Original line Diff line number Diff line
@@ -66,9 +66,7 @@ 
#include <pthread.h>

#include <pthread.h>

#include <linux/userfaultfd.h>

#include <linux/userfaultfd.h>





#ifndef __NR_userfaultfd

#ifdef __NR_userfaultfd

#error "missing __NR_userfaultfd definition"

#endif





static unsigned long nr_cpus, nr_pages, nr_pages_per_cpu, page_size;

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);

	       nr_pages, nr_pages_per_cpu);

	return userfaultfd_stress();

	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 */