1dnl # 2dnl # Check for generic io accounting interface. 3dnl # 4AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_IO_ACCT], [ 5 ZFS_LINUX_TEST_SRC([bio_io_acct], [ 6 #include <linux/blkdev.h> 7 ], [ 8 struct bio *bio = NULL; 9 unsigned long start_time; 10 11 start_time = bio_start_io_acct(bio); 12 bio_end_io_acct(bio, start_time); 13 ]) 14 15 ZFS_LINUX_TEST_SRC([generic_acct_3args], [ 16 #include <linux/bio.h> 17 18 void (*generic_start_io_acct_f)(int, unsigned long, 19 struct hd_struct *) = &generic_start_io_acct; 20 void (*generic_end_io_acct_f)(int, struct hd_struct *, 21 unsigned long) = &generic_end_io_acct; 22 ], [ 23 generic_start_io_acct(0, 0, NULL); 24 generic_end_io_acct(0, NULL, 0); 25 ]) 26 27 ZFS_LINUX_TEST_SRC([generic_acct_4args], [ 28 #include <linux/bio.h> 29 30 void (*generic_start_io_acct_f)(struct request_queue *, int, 31 unsigned long, struct hd_struct *) = &generic_start_io_acct; 32 void (*generic_end_io_acct_f)(struct request_queue *, int, 33 struct hd_struct *, unsigned long) = &generic_end_io_acct; 34 ], [ 35 generic_start_io_acct(NULL, 0, 0, NULL); 36 generic_end_io_acct(NULL, 0, NULL, 0); 37 ]) 38]) 39 40AC_DEFUN([ZFS_AC_KERNEL_GENERIC_IO_ACCT], [ 41 dnl # 42 dnl # 5.7 API, 43 dnl # 44 dnl # Added bio_start_io_acct() and bio_end_io_acct() helpers. 45 dnl # 46 AC_MSG_CHECKING([whether generic bio_*_io_acct() are available]) 47 ZFS_LINUX_TEST_RESULT([bio_io_acct], [ 48 AC_MSG_RESULT(yes) 49 AC_DEFINE(HAVE_BIO_IO_ACCT, 1, [bio_*_io_acct() available]) 50 ], [ 51 AC_MSG_RESULT(no) 52 53 dnl # 54 dnl # 4.14 API, 55 dnl # 56 dnl # generic_start_io_acct/generic_end_io_acct now require 57 dnl # request_queue to be provided. No functional changes, 58 dnl # but preparation for inflight accounting. 59 dnl # 60 AC_MSG_CHECKING([whether generic_*_io_acct wants 4 args]) 61 ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_4args], 62 [generic_start_io_acct], [block/bio.c], [ 63 AC_MSG_RESULT(yes) 64 AC_DEFINE(HAVE_GENERIC_IO_ACCT_4ARG, 1, 65 [generic_*_io_acct() 4 arg available]) 66 ], [ 67 AC_MSG_RESULT(no) 68 69 dnl # 70 dnl # 3.19 API addition 71 dnl # 72 dnl # torvalds/linux@394ffa50 allows us to increment 73 dnl # iostat counters without generic_make_request(). 74 dnl # 75 AC_MSG_CHECKING( 76 [whether generic_*_io_acct wants 3 args]) 77 ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_3args], 78 [generic_start_io_acct], [block/bio.c], [ 79 AC_MSG_RESULT(yes) 80 AC_DEFINE(HAVE_GENERIC_IO_ACCT_3ARG, 1, 81 [generic_*_io_acct() 3 arg available]) 82 ], [ 83 AC_MSG_RESULT(no) 84 ]) 85 ]) 86 ]) 87]) 88