54 lines
1.8 KiB
Plaintext
54 lines
1.8 KiB
Plaintext
dnl #
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dnl # 3.19 API addition
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dnl #
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dnl # torvalds/linux@394ffa503bc40e32d7f54a9b817264e81ce131b4 allows us to
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dnl # increment iostat counters without generic_make_request().
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_GENERIC_IO_ACCT_3ARG], [
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AC_MSG_CHECKING([whether 3 arg generic IO accounting symbols are available])
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ZFS_LINUX_TRY_COMPILE_SYMBOL([
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#include <linux/bio.h>
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void (*generic_start_io_acct_f)(int, unsigned long,
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struct hd_struct *) = &generic_start_io_acct;
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void (*generic_end_io_acct_f)(int, struct hd_struct *,
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unsigned long) = &generic_end_io_acct;
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], [
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generic_start_io_acct(0, 0, NULL);
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generic_end_io_acct(0, NULL, 0);
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], [generic_start_io_acct], [block/bio.c], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_GENERIC_IO_ACCT_3ARG, 1,
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[generic_start_io_acct()/generic_end_io_acct() available])
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], [
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # Linux 4.14 API,
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dnl #
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dnl # generic_start_io_acct/generic_end_io_acct now require request_queue to be
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dnl # provided. No functional changes, but preparation for inflight accounting
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_GENERIC_IO_ACCT_4ARG], [
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AC_MSG_CHECKING([whether 4 arg generic IO accounting symbols are available])
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ZFS_LINUX_TRY_COMPILE_SYMBOL([
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#include <linux/bio.h>
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void (*generic_start_io_acct_f)(struct request_queue *, int,
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unsigned long, struct hd_struct *) = &generic_start_io_acct;
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void (*generic_end_io_acct_f)(struct request_queue *, int,
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struct hd_struct *, unsigned long) = &generic_end_io_acct;
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], [
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generic_start_io_acct(NULL, 0, 0, NULL);
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generic_end_io_acct(NULL, 0, NULL, 0);
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], [generic_start_io_acct], [block/bio.c], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_GENERIC_IO_ACCT_4ARG, 1,
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[generic_start_io_acct()/generic_end_io_acct() 4 arg available])
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], [
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AC_MSG_RESULT(no)
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])
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])
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