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| author | Keith Busch <keith.busch@intel.com> | 2018-10-26 15:10:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-26 16:38:15 -0700 |
| commit | 3821b76c3cdb5f2c5ef1b082de79829e8ff50a7d (patch) | |
| tree | 40d7816b202d8873420e932c83585cf0339163f6 | |
| parent | 0dd8666afb99c71d124e0c2abf1ad7d934a242a0 (diff) | |
| download | linux-3821b76c3cdb5f2c5ef1b082de79829e8ff50a7d.tar.bz2 | |
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>
| -rw-r--r-- | tools/testing/selftests/vm/gup_benchmark.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/testing/selftests/vm/gup_benchmark.c b/tools/testing/selftests/vm/gup_benchmark.c index 5c8e4cb1441a..880b96fc80d4 100644 --- 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; } |