mm/gup_test.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 #ifndef __GUP_TEST_H
   3 #define __GUP_TEST_H
   4
   5 #include <linux/types.h>
   6
   7 #define GUP_FAST_BENCHMARK      _IOWR('g', 1, struct gup_test)
   8 #define PIN_FAST_BENCHMARK      _IOWR('g', 2, struct gup_test)
   9 #define PIN_LONGTERM_BENCHMARK  _IOWR('g', 3, struct gup_test)
  10 #define GUP_BASIC_TEST          _IOWR('g', 4, struct gup_test)
  11 #define PIN_BASIC_TEST          _IOWR('g', 5, struct gup_test)
  12 #define DUMP_USER_PAGES_TEST    _IOWR('g', 6, struct gup_test)
  13 #define PIN_LONGTERM_TEST_START _IOW('g', 7, struct pin_longterm_test)
  14 #define PIN_LONGTERM_TEST_STOP  _IO('g', 8)
  15 #define PIN_LONGTERM_TEST_READ  _IOW('g', 9, __u64)
  16
  17 #define GUP_TEST_MAX_PAGES_TO_DUMP              8
  18
  19 #define GUP_TEST_FLAG_DUMP_PAGES_USE_PIN        0x1
  20
  21 struct gup_test {
  22         __u64 get_delta_usec;
  23         __u64 put_delta_usec;
  24         __u64 addr;
  25         __u64 size;
  26         __u32 nr_pages_per_call;
  27         __u32 gup_flags;
  28         __u32 test_flags;
  29         /*
  30          * Each non-zero entry is the number of the page (1-based: first page is
  31          * page 1, so that zero entries mean "do nothing") from the .addr base.
  32          */
  33         __u32 which_pages[GUP_TEST_MAX_PAGES_TO_DUMP];
  34 };
  35
  36 #define PIN_LONGTERM_TEST_FLAG_USE_WRITE        1
  37 #define PIN_LONGTERM_TEST_FLAG_USE_FAST         2
  38
  39 struct pin_longterm_test {
  40         __u64 addr;
  41         __u64 size;
  42         __u32 flags;
  43 };
  44
  45 #endif  /* __GUP_TEST_H */