KVM: selftests: Add backing src parameter to dirty_log_perf_test

Add a parameter to control the backing memory type for
dirty_log_perf_test so that the test can be run with hugepages.

To: [email protected]
CC: Peter Xu <[email protected]>
CC: Andrew Jones <[email protected]>
CC: Thomas Huth <[email protected]>
Signed-off-by: Ben Gardon <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>

1 files changed, 29 insertions, 0 deletions

diff --git a/tools/testing/selftests/kvm/lib/test_util.c b/tools/testing/selftests/kvm/lib/test_util.c
index 5f87ed32caf5..906c955384e2 100644
--- a/tools/testing/selftests/kvm/lib/test_util.c
+++ b/tools/testing/selftests/kvm/lib/test_util.c
@@ -10,6 +10,7 @@
 #include <limits.h>
 #include <stdlib.h>
 #include <time.h>
+#include "linux/kernel.h"
 
 #include "test_util.h"
 
@@ -109,3 +110,31 @@ void print_skip(const char *fmt, ...)
 	va_end(ap);
 	puts(", skipping test");
 }
+
+const struct vm_mem_backing_src_alias backing_src_aliases[] = {
+	{"anonymous", VM_MEM_SRC_ANONYMOUS,},
+	{"anonymous_thp", VM_MEM_SRC_ANONYMOUS_THP,},
+	{"anonymous_hugetlb", VM_MEM_SRC_ANONYMOUS_HUGETLB,},
+};
+
+void backing_src_help(void)
+{
+	int i;
+
+	printf("Available backing src types:\n");
+	for (i = 0; i < ARRAY_SIZE(backing_src_aliases); i++)
+		printf("\t%s\n", backing_src_aliases[i].name);
+}
+
+enum vm_mem_backing_src_type parse_backing_src_type(const char *type_name)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(backing_src_aliases); i++)
+		if (!strcmp(type_name, backing_src_aliases[i].name))
+			return backing_src_aliases[i].type;
+
+	backing_src_help();
+	TEST_FAIL("Unknown backing src type: %s", type_name);
+	return -1;
+}