diff options
Diffstat (limited to 'mm/gup_test.h')
| -rw-r--r-- | mm/gup_test.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/mm/gup_test.h b/mm/gup_test.h new file mode 100644 index 0000000000..5b37b54e8b --- /dev/null +++ b/mm/gup_test.h @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef __GUP_TEST_H +#define __GUP_TEST_H + +#include <linux/types.h> + +#define GUP_FAST_BENCHMARK _IOWR('g', 1, struct gup_test) +#define PIN_FAST_BENCHMARK _IOWR('g', 2, struct gup_test) +#define PIN_LONGTERM_BENCHMARK _IOWR('g', 3, struct gup_test) +#define GUP_BASIC_TEST _IOWR('g', 4, struct gup_test) +#define PIN_BASIC_TEST _IOWR('g', 5, struct gup_test) +#define DUMP_USER_PAGES_TEST _IOWR('g', 6, struct gup_test) +#define PIN_LONGTERM_TEST_START _IOW('g', 7, struct pin_longterm_test) +#define PIN_LONGTERM_TEST_STOP _IO('g', 8) +#define PIN_LONGTERM_TEST_READ _IOW('g', 9, __u64) + +#define GUP_TEST_MAX_PAGES_TO_DUMP 8 + +#define GUP_TEST_FLAG_DUMP_PAGES_USE_PIN 0x1 + +struct gup_test { + __u64 get_delta_usec; + __u64 put_delta_usec; + __u64 addr; + __u64 size; + __u32 nr_pages_per_call; + __u32 gup_flags; + __u32 test_flags; + /* + * Each non-zero entry is the number of the page (1-based: first page is + * page 1, so that zero entries mean "do nothing") from the .addr base. + */ + __u32 which_pages[GUP_TEST_MAX_PAGES_TO_DUMP]; +}; + +#define PIN_LONGTERM_TEST_FLAG_USE_WRITE 1 +#define PIN_LONGTERM_TEST_FLAG_USE_FAST 2 + +struct pin_longterm_test { + __u64 addr; + __u64 size; + __u32 flags; +}; + +#endif /* __GUP_TEST_H */ |