kernel-generic_io_acct.m4

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    1 dnl #
    2 dnl # Check for generic io accounting interface.
    3 dnl #
    4 AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_IO_ACCT], [
    5         ZFS_LINUX_TEST_SRC([bdev_io_acct], [
    6                 #include <linux/blkdev.h>
    7         ], [
    8                 struct block_device *bdev = NULL;
    9                 struct bio *bio = NULL;
   10                 unsigned long passed_time = 0;
   11                 unsigned long start_time;
   12 
   13                 start_time = bdev_start_io_acct(bdev, bio_sectors(bio),
   14                     bio_op(bio), passed_time);
   15                 bdev_end_io_acct(bdev, bio_op(bio), start_time);
   16         ])
   17 
   18         ZFS_LINUX_TEST_SRC([disk_io_acct], [
   19                 #include <linux/blkdev.h>
   20         ], [
   21                 struct gendisk *disk = NULL;
   22                 struct bio *bio = NULL;
   23                 unsigned long start_time;
   24 
   25                 start_time = disk_start_io_acct(disk, bio_sectors(bio), bio_op(bio));
   26                 disk_end_io_acct(disk, bio_op(bio), start_time);
   27         ])
   28 
   29         ZFS_LINUX_TEST_SRC([bio_io_acct], [
   30                 #include <linux/blkdev.h>
   31         ], [
   32                 struct bio *bio = NULL;
   33                 unsigned long start_time;
   34 
   35                 start_time = bio_start_io_acct(bio);
   36                 bio_end_io_acct(bio, start_time);
   37         ])
   38 
   39         ZFS_LINUX_TEST_SRC([generic_acct_3args], [
   40                 #include <linux/bio.h>
   41 
   42                 void (*generic_start_io_acct_f)(int, unsigned long,
   43                     struct hd_struct *) = &generic_start_io_acct;
   44                 void (*generic_end_io_acct_f)(int, struct hd_struct *,
   45                     unsigned long) = &generic_end_io_acct;
   46         ], [
   47                 generic_start_io_acct(0, 0, NULL);
   48                 generic_end_io_acct(0, NULL, 0);
   49         ])
   50 
   51         ZFS_LINUX_TEST_SRC([generic_acct_4args], [
   52                 #include <linux/bio.h>
   53 
   54                 void (*generic_start_io_acct_f)(struct request_queue *, int,
   55                     unsigned long, struct hd_struct *) = &generic_start_io_acct;
   56                 void (*generic_end_io_acct_f)(struct request_queue *, int,
   57                     struct hd_struct *, unsigned long) = &generic_end_io_acct;
   58         ], [
   59                 generic_start_io_acct(NULL, 0, 0, NULL);
   60                 generic_end_io_acct(NULL, 0, NULL, 0);
   61         ])
   62 ])
   63 
   64 AC_DEFUN([ZFS_AC_KERNEL_GENERIC_IO_ACCT], [
   65         dnl #
   66         dnl # 5.19 API,
   67         dnl #
   68         dnl # disk_start_io_acct() and disk_end_io_acct() have been replaced by
   69         dnl # bdev_start_io_acct() and bdev_end_io_acct().
   70         dnl #
   71         AC_MSG_CHECKING([whether generic bdev_*_io_acct() are available])
   72         ZFS_LINUX_TEST_RESULT([bdev_io_acct], [
   73                 AC_MSG_RESULT(yes)
   74                 AC_DEFINE(HAVE_BDEV_IO_ACCT, 1, [bdev_*_io_acct() available])
   75         ], [
   76                 AC_MSG_RESULT(no)
   77 
   78                 dnl #
   79                 dnl # 5.12 API,
   80                 dnl #
   81                 dnl # bio_start_io_acct() and bio_end_io_acct() became GPL-exported
   82                 dnl # so use disk_start_io_acct() and disk_end_io_acct() instead
   83                 dnl #
   84                 AC_MSG_CHECKING([whether generic disk_*_io_acct() are available])
   85                 ZFS_LINUX_TEST_RESULT([disk_io_acct], [
   86                         AC_MSG_RESULT(yes)
   87                         AC_DEFINE(HAVE_DISK_IO_ACCT, 1, [disk_*_io_acct() available])
   88                 ], [
   89                         AC_MSG_RESULT(no)
   90 
   91                         dnl #
   92                         dnl # 5.7 API,
   93                         dnl #
   94                         dnl # Added bio_start_io_acct() and bio_end_io_acct() helpers.
   95                         dnl #
   96                         AC_MSG_CHECKING([whether generic bio_*_io_acct() are available])
   97                         ZFS_LINUX_TEST_RESULT([bio_io_acct], [
   98                                 AC_MSG_RESULT(yes)
   99                                 AC_DEFINE(HAVE_BIO_IO_ACCT, 1, [bio_*_io_acct() available])
  100                         ], [
  101                                 AC_MSG_RESULT(no)
  102 
  103                                 dnl #
  104                                 dnl # 4.14 API,
  105                                 dnl #
  106                                 dnl # generic_start_io_acct/generic_end_io_acct now require
  107                                 dnl # request_queue to be provided. No functional changes,
  108                                 dnl # but preparation for inflight accounting.
  109                                 dnl #
  110                                 AC_MSG_CHECKING([whether generic_*_io_acct wants 4 args])
  111                                 ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_4args],
  112                                     [generic_start_io_acct], [block/bio.c], [
  113                                         AC_MSG_RESULT(yes)
  114                                         AC_DEFINE(HAVE_GENERIC_IO_ACCT_4ARG, 1,
  115                                             [generic_*_io_acct() 4 arg available])
  116                                 ], [
  117                                         AC_MSG_RESULT(no)
  118 
  119                                         dnl #
  120                                         dnl # 3.19 API addition
  121                                         dnl #
  122                                         dnl # torvalds/linux@394ffa50 allows us to increment
  123                                         dnl # iostat counters without generic_make_request().
  124                                         dnl #
  125                                         AC_MSG_CHECKING(
  126                                             [whether generic_*_io_acct wants 3 args])
  127                                         ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_3args],
  128                                             [generic_start_io_acct], [block/bio.c], [
  129                                                 AC_MSG_RESULT(yes)
  130                                                 AC_DEFINE(HAVE_GENERIC_IO_ACCT_3ARG, 1,
  131                                                     [generic_*_io_acct() 3 arg available])
  132                                         ], [
  133                                                 AC_MSG_RESULT(no)
  134                                         ])
  135                                 ])
  136                         ])
  137                 ])
  138         ])
  139 ])

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/config/kernel-generic_io_acct.m4

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/config/kernel-generic_io_acct.m4