diff options
Diffstat (limited to 'sys/contrib/openzfs/config/kernel-generic_io_acct.m4')
-rw-r--r-- | sys/contrib/openzfs/config/kernel-generic_io_acct.m4 | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/config/kernel-generic_io_acct.m4 b/sys/contrib/openzfs/config/kernel-generic_io_acct.m4 new file mode 100644 index 000000000000..423b3e5a3521 --- /dev/null +++ b/sys/contrib/openzfs/config/kernel-generic_io_acct.m4 @@ -0,0 +1,64 @@ +dnl # +dnl # Check for generic io accounting interface. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_IO_ACCT], [ + ZFS_LINUX_TEST_SRC([generic_acct_3args], [ + #include <linux/bio.h> + + void (*generic_start_io_acct_f)(int, unsigned long, + struct hd_struct *) = &generic_start_io_acct; + void (*generic_end_io_acct_f)(int, struct hd_struct *, + unsigned long) = &generic_end_io_acct; + ], [ + generic_start_io_acct(0, 0, NULL); + generic_end_io_acct(0, NULL, 0); + ]) + + ZFS_LINUX_TEST_SRC([generic_acct_4args], [ + #include <linux/bio.h> + + void (*generic_start_io_acct_f)(struct request_queue *, int, + unsigned long, struct hd_struct *) = &generic_start_io_acct; + void (*generic_end_io_acct_f)(struct request_queue *, int, + struct hd_struct *, unsigned long) = &generic_end_io_acct; + ], [ + generic_start_io_acct(NULL, 0, 0, NULL); + generic_end_io_acct(NULL, 0, NULL, 0); + ]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_GENERIC_IO_ACCT], [ + dnl # + dnl # 3.19 API addition + dnl # + dnl # torvalds/linux@394ffa50 allows us to increment iostat + dnl # counters without generic_make_request(). + dnl # + AC_MSG_CHECKING([whether generic IO accounting wants 3 args]) + ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_3args], + [generic_start_io_acct], [block/bio.c], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_GENERIC_IO_ACCT_3ARG, 1, + [generic_start_io_acct()/generic_end_io_acct() available]) + ], [ + AC_MSG_RESULT(no) + + dnl # + dnl # Linux 4.14 API, + dnl # + dnl # generic_start_io_acct/generic_end_io_acct now require + dnl # request_queue to be provided. No functional changes, + dnl # but preparation for inflight accounting. + dnl # + AC_MSG_CHECKING([whether generic IO accounting wants 4 args]) + ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_4args], + [generic_start_io_acct], [block/bio.c], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_GENERIC_IO_ACCT_4ARG, 1, + [generic_start_io_acct()/generic_end_io_acct() ] + [4 arg available]) + ], [ + AC_MSG_RESULT(no) + ]) + ]) +]) |