+# LIBCFS_TCP_SOCK_SET_NODELAY
+#
+# kernel 4.18.0-293.el8
+# tcp_sock_set_nodelay() was added
+AC_DEFUN([LIBCFS_TCP_SOCK_SET_NODELAY], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if 'tcp_sock_set_nodelay()' exists],
+tcp_sock_set_nodelay_exists, [
+ #include <linux/tcp.h>
+],[
+ tcp_sock_set_nodelay(NULL);
+],[
+ AC_DEFINE(HAVE_TCP_SOCK_SET_NODELAY, 1,
+ ['tcp_sock_set_nodelay()' exists])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_TCP_SOCK_SET_NODELAY
+
+#
+# LIBCFS_TCP_SOCK_SET_KEEPIDLE
+#
+# kernel 4.18.0-293.el8
+# tcp_sock_set_keepidle() was added
+AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPIDLE], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if 'tcp_sock_set_keepidle()' exists],
+tcp_sock_set_keepidle_exists, [
+ #include <linux/tcp.h>
+],[
+ tcp_sock_set_keepidle(NULL, 0);
+],[
+ AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPIDLE, 1,
+ ['tcp_sock_set_keepidle()' exists])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_TCP_SOCK_SET_KEEPIDLE
+
+#
+# LIBCFS_TCP_SOCK_SET_QUICKACK
+# kernel v5.7-rc6-2504-gddd061b8daed
+# tcp: add tcp_sock_set_quickack
+#
+AC_DEFUN([LIBCFS_TCP_SOCK_SET_QUICKACK], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if 'tcp_sock_set_quickack()' exists],
+tcp_sock_set_quickack_exists, [
+ #include <linux/tcp.h>
+],[
+ tcp_sock_set_quickack(NULL, 0);
+],[
+ AC_DEFINE(HAVE_TCP_SOCK_SET_QUICKACK, 1,
+ ['tcp_sock_set_quickack()' exists])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_TCP_SOCK_SET_QUICKACK
+
+#
+# LIBCFS_TCP_SOCK_SET_KEEPINTVL
+# v5.7-rc6-2508-gd41ecaac903c
+# tcp: add tcp_sock_set_keepintvl
+#
+AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPINTVL], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if 'tcp_sock_set_keepintvl()' exists],
+tcp_sock_set_keepintvl_exists, [
+ #include <linux/tcp.h>
+],[
+ tcp_sock_set_keepintvl(NULL, 0);
+],[
+ AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPINTVL, 1,
+ ['tcp_sock_set_keepintvl()' exists])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_TCP_SOCK_SET_KEEPINTVL
+
+#
+# LIBCFS_TCP_SOCK_SET_KEEPCNT
+# v5.7-rc6-2509-g480aeb9639d6
+# tcp: add tcp_sock_set_keepcnt
+#
+AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPCNT], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if 'tcp_sock_set_keepcnt()' exists],
+tcp_sock_set_keepcnt_exists, [
+ #include <linux/tcp.h>
+],[
+ tcp_sock_set_keepcnt(NULL, 0);
+],[
+ AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPCNT, 1,
+ ['tcp_sock_set_keepcnt()' exists])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_TCP_SOCK_SET_KEEPCNT
+
+#
+# LIBCFS_XARRAY_SUPPORT
+#
+# 4.19-rc5 kernel commit 3159f943aafdbacb2f94c38fdaadabf2bbde2a14
+# replaced the radix tree implementation with Xarrays. This change
+# introduced functionaly needed for general Xarray support
+#
+AC_DEFUN([LIBCFS_XARRAY_SUPPORT], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if page cache uses Xarray],
+xarray_support, [
+ #include <linux/xarray.h>
+],[
+ xa_is_value(NULL);
+],[
+ AC_DEFINE(HAVE_XARRAY_SUPPORT, 1,
+ [kernel Xarray implementation lacks 'xa_is_value'])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_XARRAY_SUPPORT
+
+#
+# Kernel version 4.19-rc6 commit 4a19edb60d0203cd5bf95a8b46ea8f63fd41194c
+# added extended ACK handling to Netlink dump handlers
+#
+AC_DEFUN([LIBCFS_NL_DUMP_EXT_ACK], [
+LB_CHECK_COMPILE([if Netlink dump handlers support ext_ack],
+netlink_dump_ext_ack, [
+ #include <net/netlink.h>
+],[
+ struct netlink_callback *cb = NULL;
+ cb->extack = NULL;
+],[
+ AC_DEFINE(HAVE_NL_DUMP_WITH_EXT_ACK, 1,
+ [netlink_ext_ack is handled for Netlink dump handlers])
+])
+]) # LIBCFS_NL_DUMP_EXT_ACK
+
+#
+# LIBCFS_HAVE_IOV_ITER_TYPE
+#
+# kernel 4.20 commit 00e23707442a75b404392cef1405ab4fd498de6b
+# iov_iter: Use accessor functions to access an iterator's type and direction.
+#
+AC_DEFUN([LIBCFS_HAVE_IOV_ITER_TYPE], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if iov_iter_type exists],
+macro_iov_iter_type_exists, [
+ #include <linux/uio.h>
+],[
+ struct iov_iter iter = { };
+ enum iter_type type = iov_iter_type(&iter);
+ (void)type;
+],[
+ AC_DEFINE(HAVE_IOV_ITER_TYPE, 1,
+ [if iov_iter_type exists])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_HAVE_IOV_ITER_TYPE
+
+#
+# LIBCFS_GET_REQUEST_KEY_AUTH
+#
+# kernel 5.0 commit 822ad64d7e46a8e2c8b8a796738d7b657cbb146d
+# keys: Fix dependency loop between construction record and auth key
+#
+# Added <keys/request_key_auth-type.h> and get_request_key_auth()
+# which was propagated to stable
+#
+AC_DEFUN([LIBCFS_GET_REQUEST_KEY_AUTH], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if get_request_key_auth() is available],
+get_request_key_auth_exported, [
+ #include <linux/key.h>
+ #include <linux/keyctl.h>
+ #include <keys/request_key_auth-type.h>
+],[
+ struct key *ring;
+ const struct key *key = NULL;
+ struct request_key_auth *rka = get_request_key_auth(key);
+
+ ring = key_get(rka->dest_keyring);
+],[
+ AC_DEFINE(HAVE_GET_REQUEST_KEY_AUTH, 1,
+ [get_request_key_auth() is available])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_GET_REQUEST_KEY_AUTH
+
+#
+# LIBCFS_LOOKUP_USER_KEY
+#
+# kernel 5.3 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740
+# signal: Remove task parameter from force_sig
+#
+AC_DEFUN([LIBCFS_LOOKUP_USER_KEY], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if lookup_user_key() is available],
+lookup_user_key_exported, [
+ #include <linux/key.h>
+ #include <linux/keyctl.h>
+],[
+ lookup_user_key(KEY_SPEC_USER_KEYRING, 0, 0);
+],[
+ AC_DEFINE(HAVE_LOOKUP_USER_KEY, 1,
+ [lookup_user_key() is available])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_LOOKUP_USER_KEY
+
+#
+# LIBCFS_FORCE_SIG_WITH_TASK
+#
+# kernel 5.3 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740
+# signal: Remove task parameter from force_sig
+#
+AC_DEFUN([LIBCFS_FORCE_SIG_WITH_TASK], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if force_sig has task parameter],
+force_sig_with_task, [
+ #include <linux/sched/signal.h>
+],[
+ force_sig(SIGINT, NULL);
+],[
+ AC_DEFINE(HAVE_FORCE_SIG_WITH_TASK, 1,
+ [force_sig() has task parameter])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_FORCE_SIG_WITH_TASK
+
+#
+# LIBCFS_CACHE_DETAIL_WRITERS
+#
+# kernel v5.3-rc2-1-g64a38e840ce5
+# SUNRPC: Track writers of the 'channel' file to improve cache_listeners_exist
+#
+AC_DEFUN([LIBCFS_CACHE_DETAIL_WRITERS], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if struct cache_detail has writers],
+cache_detail_writers_atomic, [
+ #include <linux/sunrpc/cache.h>
+
+ static struct cache_detail rsi_cache;
+],[
+ atomic_set(&rsi_cache.writers, 0);
+],[
+ AC_DEFINE(HAVE_CACHE_DETAIL_WRITERS, 1,
+ [struct cache_detail has writers])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_CACHE_DETAIL_WRITERS
+
+#
+# LIBCFS_GENL_DUMPIT_INFO
+#
+# kernel v5.4-rc1 commit bf813b0afeae2f012f0e527a526c1b78ca21ad82
+# expanded struct genl_dumpit_info to include struct genl_family.
+#
+AC_DEFUN([LIBCFS_GENL_DUMPIT_INFO], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if struct genl_dumpit_info has family field],
+genl_dumpit_info, [
+ #include <net/genetlink.h>
+],[
+ static struct genl_dumpit_info info;
+
+ info.family = NULL;
+],[
+ AC_DEFINE(HAVE_GENL_DUMPIT_INFO, 1,
+ [struct genl_dumpit_info has family field])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_GENL_DUMPIT_INFO
+
+#
+# LIBCFS_KALLSYMS_LOOKUP
+#
+# kernel v5.6-11591-g0bd476e6c671
+# kallsyms: unexport kallsyms_lookup_name() and kallsyms_on_each_symbol()
+AC_DEFUN([LIBCFS_KALLSYMS_LOOKUP], [
+LB_CHECK_EXPORT([kallsyms_lookup_name], [kernel/kallsyms.c],
+ [AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1,
+ [kallsyms_lookup_name is exported by kernel])])
+]) # LIBCFS_KALLSYMS_LOOKUP
+
+#
+# v5.5-8862-gd56c0d45f0e2
+# proc: decouple proc from VFS with "struct proc_ops"
+#
+AC_DEFUN([LIBCFS_SRC_HAVE_PROC_OPS], [
+ LB2_LINUX_TEST_SRC([proc_ops], [
+ #include <linux/proc_fs.h>
+
+ static struct proc_ops *my_proc;
+ ],[
+ my_proc->proc_lseek = NULL;
+ ],[-Werror])
+]) # LIBCFS_SRC_HAVE_PROC_OPS
+AC_DEFUN([LIBCFS_HAVE_PROC_OPS], [
+ AC_MSG_CHECKING([if struct proc_ops exists])
+ LB2_LINUX_TEST_RESULT([proc_ops], [
+ AC_DEFINE(HAVE_PROC_OPS, 1,
+ [struct proc_ops exists])
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+]) # LIBCFS_HAVE_PROC_OPS
+
+#
+# LIBCFS_VMALLOC_2ARGS
+#
+# kernel v5.8-rc1~201^2~19
+# mm: remove the pgprot argument to __vmalloc
+AC_DEFUN([LIBCFS_VMALLOC_2ARGS], [
+LB_CHECK_COMPILE([if __vmalloc has 2 args],
+vmalloc_2args, [
+ #include <linux/vmalloc.h>
+],[
+ __vmalloc(0, 0);
+],[
+ AC_DEFINE(HAVE_VMALLOC_2ARGS, 1,
+ [__vmalloc only takes 2 args.])
+])
+]) # LIBCFS_VMALLOC_2ARGS
+
+#
+# LIBCFS_HAVE_NR_UNSTABLE_NFS
+#
+# kernel v5.8-rc1~201^2~75
+# mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead
+#
+AC_DEFUN([LIBCFS_HAVE_NR_UNSTABLE_NFS], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if NR_UNSTABLE_NFS still in use],
+nr_unstable_nfs_exists, [
+ #include <linux/mm.h>
+
+ int i;
+],[
+ i = NR_UNSTABLE_NFS;
+],[
+ AC_DEFINE(HAVE_NR_UNSTABLE_NFS, 1,
+ [NR_UNSTABLE_NFS is still in use.])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_HAVE_NR_UNSTABLE_NFS
+
+#
+# LIBCFS_HAVE_MMAP_LOCK
+#
+# kernel v5.8-rc1~83^2~24
+# mmap locking API: rename mmap_sem to mmap_lock
+#
+AC_DEFUN([LIBCFS_HAVE_MMAP_LOCK], [
+LB_CHECK_COMPILE([if mmap_lock API is available],
+mmap_write_lock, [
+ #include <linux/mm.h>
+],[
+ mmap_write_lock(NULL);
+],[
+ AC_DEFINE(HAVE_MMAP_LOCK, 1,
+ [mmap_lock API is available.])
+])
+]) # LIBCFS_HAVE_MMAP_LOCK
+
+#
+# LIBCFS_KERNEL_SETSOCKOPT
+#
+# kernel v5.8-rc1~165^2~59^2
+# net: remove kernel_setsockopt
+AC_DEFUN([LIBCFS_KERNEL_SETSOCKOPT], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if kernel_setsockopt still in use],
+kernel_setsockopt_exists, [
+ #include <linux/net.h>
+],[
+ kernel_setsockopt(NULL, 0, 0, NULL, 0);
+],[
+ AC_DEFINE(HAVE_KERNEL_SETSOCKOPT, 1,
+ [kernel_setsockopt still in use])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_KERNEL_SETSOCKOPT
+
+#
+# LIBCFS_SEC_RELEASE_SECCTX
+#
+# kernel linux-hwe-5.8 (5.8.0-22.23~20.04.1)
+# LSM: Use lsmcontext in security_release_secctx
+AC_DEFUN([LIBCFS_SEC_RELEASE_SECCTX], [
+LB_CHECK_COMPILE([if security_release_secctx has 1 arg],
+security_release_secctx_1arg, [
+ #include <linux/security.h>
+],[
+ security_release_secctx(NULL);
+],[
+ AC_DEFINE(HAVE_SEC_RELEASE_SECCTX_1ARG, 1,
+ [security_release_secctx has 1 arg.])
+])
+]) # LIBCFS_SEC_RELEASE_SECCTX
+
+#
+# LIBCFS_HAVE_KFREE_SENSITIVE
+#
+# kernel v5.10-rc1~3
+# mm: remove kzfree() compatibility definition
+#
+AC_DEFUN([LIBCFS_HAVE_KFREE_SENSITIVE], [
+LB_CHECK_COMPILE([if kfree_sensitive() is available],
+kfree_sensitive_exists, [
+ #include <linux/slab.h>
+
+],[
+ kfree_sensitive(NULL);
+],[
+ AC_DEFINE(HAVE_KFREE_SENSITIVE, 1,
+ [kfree_sensitive() is available.])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_HAVE_KFREE_SENSITIVE
+
+#
+# LIBCFS_HAVE_CRYPTO_SHA2_HEADER
+#
+# Kernel v5.10-rc1-114-ga24d22b225ce
+# crypto: sha - split sha.h into sha1.h and sha2.h
+#
+AC_DEFUN([LIBCFS_HAVE_CRYPTO_SHA2_HEADER], [
+LB_CHECK_LINUX_HEADER([crypto/sha2.h], [
+ AC_DEFINE(HAVE_CRYPTO_SHA2_HEADER, 1,
+ [crypto/sha2.h is present])])
+]) # LIBCFS_HAVE_CRYPTO_SHA2_HEADER
+
+#
+# LIBCFS_HAVE_LIST_CMP_FUNC_T
+#
+# kernel 5.10.70 commit 4f0f586bf0c898233d8f316f471a21db2abd522d
+# treewide: Change list_sort to use const pointers
+AC_DEFUN([LIBCFS_HAVE_LIST_CMP_FUNC_T], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror -Wno-unused-variable"
+LB_CHECK_COMPILE([if list_cmp_func_t type is defined],
+list_cmp_func_t, [
+ #include <linux/list_sort.h>
+],[
+ list_cmp_func_t cmp;
+],[
+ AC_DEFINE(HAVE_LIST_CMP_FUNC_T, 1,
+ [list_cmp_func_t type is defined])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_HAVE_LIST_CMP_FUNC_T
+
+#
+# LIBCFS_NLA_STRSCPY
+#
+# Kernel version 5.10-rc3 commit 872f690341948b502c93318f806d821c56772c42
+# replaced nla_strlcpy() with nla_strscpy().
+#
+AC_DEFUN([LIBCFS_SRC_NLA_STRSCPY], [
+ LB2_LINUX_TEST_SRC([nla_strscpy], [
+ #include <net/netlink.h>
+ ],[
+ if (nla_strscpy(NULL, NULL, 0) < 0)
+ return -EINVAL;
+ ],[
+ ],[])
+])
+AC_DEFUN([LIBCFS_NLA_STRSCPY], [
+ AC_MSG_CHECKING([if 'nla_strscpy()' exists])
+ LB2_LINUX_TEST_RESULT([nla_strscpy], [
+ AC_DEFINE(HAVE_NLA_STRSCPY, 1,
+ ['nla_strscpy' is available])
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+]) # LIBCFS_NLA_STRSCPY
+
+#
+# LIBCFS_HAVE_CIPHER_HEADER
+#
+# Kernel 5.12 commit 0eb76ba29d16df2951d37c54ca279c4e5630b071
+# crypto: remove cipher routines from public crypto API
+#
+AC_DEFUN([LIBCFS_HAVE_CIPHER_HEADER], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_LINUX_HEADER([crypto/internal/cipher.h], [
+ AC_DEFINE(HAVE_CIPHER_H, 1,
+ [crypto/internal/cipher.h is present])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_HAVE_CIPHER_HEADER
+
+#
+# LIBCFS_HAVE_TASK_RUNNING
+#
+# Kernel 5.13-rc6 commit b03fbd4ff24c5f075e58eb19261d5f8b3e40d
+# introduced task_is_running() macro.
+#
+AC_DEFUN([LIBCFS_HAVE_TASK_IS_RUNNING], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if task_is_running() is defined],
+task_is_running, [
+ #include <linux/sched.h>
+],[
+ if (task_is_running(current))
+ schedule();
+],[
+ AC_DEFINE(HAVE_TASK_IS_RUNNING, 1,
+ [task_is_running() is defined])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_HAVE_TASK_IS_RUNNING
+
+#
+# LIBCFS_LINUX_STDARG_HEADER
+#
+# Kernel 5.14-rc5 commit c0891ac15f0428ffa81b2e818d416bdf3cb74ab6
+# isystem: ship and use stdarg.h
+#
+AC_DEFUN([LIBCFS_LINUX_STDARG_HEADER], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_LINUX_HEADER([linux/stdarg.h], [
+ AC_DEFINE(HAVE_LINUX_STDARG_HEADER, 1, [linux/stdarg.h is present])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_LINUX_STDARG_HEADER
+
+#
+# LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
+#
+# Kernel 5.14 commit f39650de687e35766572ac89dbcd16a5911e2f0a
+# kernel.h: split out panic and oops helpers
+#
+AC_DEFUN([LIBCFS_HAVE_PANIC_NOTIFIER_HEADER], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_LINUX_HEADER([linux/panic_notifier.h], [
+ AC_DEFINE(HAVE_PANIC_NOTIFIER_H, 1,
+ [linux/panic_notifier.h is present])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
+
+#
+# LIBCFS_PARAM_SET_UINT_MINMAX
+#
+# Kernel 5.15-rc1 commit 2a14c9ae15a38148484a128b84bff7e9ffd90d68
+# moved param_set_uint_minmax to common code
+#
+AC_DEFUN([LIBCFS_PARAM_SET_UINT_MINMAX],[
+LB_CHECK_COMPILE([does function 'param_set_uint_minmax' exist],
+param_set_uint_minmax, [
+ #include <linux/moduleparam.h>
+],[
+ param_set_uint_minmax(NULL, NULL, 0, 0);
+],[
+ AC_DEFINE(HAVE_PARAM_SET_UINT_MINMAX, 1,
+ ['param_set_uint_minmax' is available])
+])
+]) # LIBCFS_PARAM_SET_UINT_MINMAX
+
+AC_DEFUN([LIBCFS_PROG_LINUX_SRC], [
+ # 5.6
+ LIBCFS_SRC_HAVE_PROC_OPS
+ # 5.10
+ LIBCFS_SRC_NLA_STRSCPY
+
+ AC_MSG_CHECKING([for available kernel interfaces to libcfs])
+ LB2_LINUX_TEST_COMPILE_ALL([libcfs])
+ AC_MSG_RESULT([done])
+])
+AC_DEFUN([LIBCFS_PROG_LINUX_RESULTS], [
+ # 5.6
+ LIBCFS_HAVE_PROC_OPS
+ # 5.10
+ LIBCFS_NLA_STRSCPY
+])
+
+#
+# LIBCFS_LINUX_BLK_INTEGRITY_HEADER
+#
+# Kernel 5.15-rc6 commit fe45e630a1035aea94c29016f2598bbde149bbe3
+# block: move integrity handling out of <linux/blkdev.h>
+#
+AC_DEFUN([LIBCFS_LINUX_BLK_INTEGRITY_HEADER], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_LINUX_HEADER([linux/blk-integrity.h], [
+ AC_DEFINE(HAVE_LINUX_BLK_INTEGRITY_HEADER, 1,
+ [linux/blk-integrity.h is present])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_LINUX_BLK_INTEGRITY_HEADER
+
+#