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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: Keith Busch <keith.busch@intel.com>
Reviewed-by: Andrew 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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Keith Busch 2018-10-26 15:10:12 -07:00 committed by Linus Torvalds
parent 0dd8666afb
commit 3821b76c3c
1 changed files with 4 additions and 1 deletions
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5
tools/testing/selftests/vm/gup_benchmark.c
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@ -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;
}