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Commit 3821b76c authored by Keith Busch's avatar Keith Busch Committed by Linus Torvalds
Browse files

tools/testing/selftests/vm/gup_benchmark.c: add MAP_HUGETLB option 

Add a new option '-H' to the gup benchmark to help understand how hugetlb
mapping pages compare with the default.

Link: http://lkml.kernel.org/r/20181010195605.10689-6-keith.busch@intel.com


Signed-off-by: default avatarKeith Busch <keith.busch@intel.com>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 0dd8666a

tools/testing/selftests/vm/gup_benchmark.c

+4 −1
Original line number Diff line number Diff line
@@ -36,7 +36,7 @@ int main(int argc, char **argv) 
	char *file = "/dev/zero";

	char *p;



	while ((opt = getopt(argc, argv, "m:r:n:f:tTLUS")) != -1) {

	while ((opt = getopt(argc, argv, "m:r:n:f:tTLUSH")) != -1) {

		switch (opt) {

		case 'm':

			size = atoi(optarg) * MB;
@@ -69,6 +69,9 @@ int main(int argc, char **argv) 
			flags &= ~MAP_PRIVATE;

			flags |= MAP_SHARED;

			break;

		case 'H':

			flags |= MAP_HUGETLB;

			break;

		default:

			return -1;

		}