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/[email protected] Signed-off-by: Keith Busch <[email protected]> Reviewed-by: Andrew Morton <[email protected]> Cc: Kirill Shutemov <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Dan Williams <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
dbaluta · Oct 26, 2018 · 3821b76 · 3821b76
1 parent 0dd8666
commit 3821b76
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/tools/testing/selftests/vm/gup_benchmark.c b/tools/testing/selftests/vm/gup_benchmark.c
@@ -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;
 		}