From: John Hubbard jhubbard@nvidia.com

[ Upstream commit 6f24c8d30d08f270b54f4c2cb9b08dfccbe59c57 ]

Even though gup_benchmark.c has code to handle the -w command-line option, the "w" is not part of the getopt string. It looks as if it has been missing the whole time.

On my machine, this leads naturally to the following predictable result:

$ sudo ./gup_benchmark -w ./gup_benchmark: invalid option -- 'w'

...which is fixed with this commit.

Link: http://lkml.kernel.org/r/20191014184639.1512873-2-jhubbard@nvidia.com Signed-off-by: John Hubbard jhubbard@nvidia.com Acked-by: Kirill A. Shutemov kirill.shutemov@linux.intel.com Cc: Keith Busch keith.busch@intel.com Cc: Shuah Khan shuah@kernel.org Cc: Christoph Hellwig hch@infradead.org Cc: "Aneesh Kumar K . V" aneesh.kumar@linux.ibm.com Cc: Ira Weiny ira.weiny@intel.com Cc: Christoph Hellwig hch@lst.de Cc: kbuild test robot lkp@intel.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/vm/gup_benchmark.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/vm/gup_benchmark.c b/tools/testing/selftests/vm/gup_benchmark.c index c0534e298b512..cb3fc09645c48 100644 --- a/tools/testing/selftests/vm/gup_benchmark.c +++ b/tools/testing/selftests/vm/gup_benchmark.c @@ -37,7 +37,7 @@ int main(int argc, char **argv) char *file = "/dev/zero"; char *p;

- while ((opt = getopt(argc, argv, "m:r:n:f:tTLUSH")) != -1) { + while ((opt = getopt(argc, argv, "m:r:n:f:tTLUwSH")) != -1) { switch (opt) { case 'm': size = atoi(optarg) * MB;