fi
])
-#
-# LIBCFS_STRUCT_PAGE_LIST
-#
-# 2.6.4 no longer has page->list
-#
-AC_DEFUN([LIBCFS_STRUCT_PAGE_LIST],
-[AC_MSG_CHECKING([if struct page has a list field])
-LB_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
-],[
- struct page page;
- &page.list;
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_PAGE_LIST, 1, [struct page has a list field])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LIBCFS_STRUCT_SIGHAND
-#
-# red hat 2.4 adds sighand to struct task_struct
-#
-AC_DEFUN([LIBCFS_STRUCT_SIGHAND],
-[AC_MSG_CHECKING([if task_struct has a sighand field])
-LB_LINUX_TRY_COMPILE([
- #include <linux/sched.h>
-],[
- struct task_struct p;
- p.sighand = NULL;
-],[
- AC_DEFINE(CONFIG_RH_2_4_20, 1, [this kernel contains Red Hat 2.4.20 patches])
- AC_MSG_RESULT([yes])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LIBCFS_FUNC_CPU_ONLINE
-#
-# cpu_online is different in rh 2.4, vanilla 2.4, and 2.6
-#
-AC_DEFUN([LIBCFS_FUNC_CPU_ONLINE],
-[AC_MSG_CHECKING([if kernel defines cpu_online()])
-LB_LINUX_TRY_COMPILE([
- #include <linux/sched.h>
-],[
- cpu_online(0);
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_CPU_ONLINE, 1, [cpu_online found])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LIBCFS_TYPE_GFP_T
-#
-# check if gfp_t is typedef-ed
-#
-AC_DEFUN([LIBCFS_TYPE_GFP_T],
-[AC_MSG_CHECKING([if kernel defines gfp_t])
-LB_LINUX_TRY_COMPILE([
- #include <linux/gfp.h>
-],[
- return sizeof(gfp_t);
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_GFP_T, 1, [gfp_t found])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LIBCFS_TYPE_CPUMASK_T
-#
-# same goes for cpumask_t
-#
-AC_DEFUN([LIBCFS_TYPE_CPUMASK_T],
-[AC_MSG_CHECKING([if kernel defines cpumask_t])
-LB_LINUX_TRY_COMPILE([
- #include <linux/sched.h>
-],[
- return sizeof (cpumask_t);
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_CPUMASK_T, 1, [cpumask_t found])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LIBCFS_FUNC_SHOW_TASK
-#
-# we export show_task(), but not all kernels have it (yet)
-#
-AC_DEFUN([LIBCFS_FUNC_SHOW_TASK],
-[LB_CHECK_SYMBOL_EXPORT([show_task],
-[kernel/ksyms.c kernel/sched.c],[
-AC_DEFINE(HAVE_SHOW_TASK, 1, [show_task is exported])
-],[
-])
-])
-
-# check userland & kernel __u64 type
-AC_DEFUN([LIBCFS_U64_LONG_LONG],
-[AC_MSG_CHECKING([u64 is long long type])
-tmp_flags="$CFLAGS"
-CFLAGS="$CFLAGS -Werror"
-AC_COMPILE_IFELSE([
- #include <linux/types.h>
- #include <linux/stddef.h>
- int main(void) {
- unsigned long long *data1;
- __u64 *data2 = NULL;
-
- data1 = data2;
- return 0;
- }
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_USER__U64_LONG_LONG, 1,
- [__u64 is long long type])
-],[
- AC_MSG_RESULT([no])
-])
-CFLAGS="$tmp_flags"
+# check kernel __u64 type
+AC_DEFUN([LIBCFS_U64_LONG_LONG_LINUX],
+[
AC_MSG_CHECKING([kernel __u64 is long long type])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="$EXTRA_KCFLAGS -Werror"
#include <linux/types.h>
#include <linux/stddef.h>
],[
- unsigned long long *data1;
- __u64 *data2 = NULL;
+ unsigned long long *data;
- data1 = data2;
+ data = (__u64*)sizeof(data);
],[
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_KERN__U64_LONG_LONG, 1,
EXTRA_KCFLAGS="$tmp_flags"
])
-# check if task_struct with rcu memeber
-AC_DEFUN([LIBCFS_TASK_RCU],
-[AC_MSG_CHECKING([if task_struct has a rcu field])
-LB_LINUX_TRY_COMPILE([
- #include <linux/sched.h>
-],[
- struct task_struct tsk;
-
- tsk.rcu.next = NULL;
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_TASK_RCU, 1,
- [task_struct has rcu field])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
# LIBCFS_TASKLIST_LOCK
# 2.6.18 remove tasklist_lock export
AC_DEFUN([LIBCFS_TASKLIST_LOCK],
])
])
+# LIBCFS_DIGEST_SETKEY_FLAGS
+# digest_alg.dia_setkey takes 4 args (2.6.18)
+#
+AC_DEFUN([LIBCFS_DIGEST_SETKEY_FLAGS],
+[AC_MSG_CHECKING([if kernel dia_setkey takes 4 args])
+LB_LINUX_TRY_COMPILE([
+ #include <linux/err.h>
+ #include <linux/crypto.h>
+],[
+ struct digest_alg alg;
+
+ alg.dia_setkey(NULL, NULL, 0, NULL);
+],[
+ AC_MSG_RESULT([yes])
+ AC_DEFINE(HAVE_DIGEST_SETKEY_FLAGS, 1, [kernel dia_setkey takes 4 args])
+],[
+ AC_MSG_RESULT([no])
+])
+])
+
# 2.6.19 API changes
# kmem_cache_destroy(cachep) return void instead of
# int
LB_LINUX_TRY_COMPILE([
#include <linux/slab.h>
],[
- int i = kmem_cache_destroy(NULL);
+ int i __attribute__ ((unused));
+ i = kmem_cache_destroy(NULL);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_KMEM_CACHE_DESTROY_INT, 1,
])
])
-# 2.6.19 API change
-#panic_notifier_list use atomic_notifier operations
-#
-AC_DEFUN([LIBCFS_ATOMIC_PANIC_NOTIFIER],
-[AC_MSG_CHECKING([panic_notifier_list is atomic])
-LB_LINUX_TRY_COMPILE([
- #include <linux/notifier.h>
- #include <linux/kernel.h>
-],[
- struct atomic_notifier_head panic_notifier_list;
-],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ATOMIC_PANIC_NOTIFIER, 1,
- [panic_notifier_list is atomic_notifier_head])
-],[
- AC_MSG_RESULT(NO)
-])
-])
-
-# since 2.6.19 nlmsg_multicast() needs 5 argument.
-AC_DEFUN([LIBCFS_NLMSG_MULTICAST],
-[AC_MSG_CHECKING([nlmsg_multicast needs 5 argument])
+# check cpumask_size (2.6.28)
+AC_DEFUN([LIBCFS_CPUMASK_SIZE],
+[AC_MSG_CHECKING([whether have cpumask_size()])
LB_LINUX_TRY_COMPILE([
- #include <net/netlink.h>
+ #include <linux/cpumask.h>
],[
- nlmsg_multicast(NULL, NULL, 0, 0, 0);
+ int size = cpumask_size();
],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_NLMSG_MULTICAST_5ARGS, 1,
- [nlmsg_multicast needs 5 argument])
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_CPUMASK_SIZE, 1, [have cpumask_size()])
],[
- AC_MSG_RESULT(NO)
+ AC_MSG_RESULT(NO)
])
])
+# check cpu topology functions
#
-# LIBCFS_NETLINK
-#
-# If we have netlink.h, and nlmsg_new takes 2 args (2.6.19)
-#
-AC_DEFUN([LIBCFS_NETLINK],
-[AC_MSG_CHECKING([if netlink.h can be compiled])
+# topology_core_cpumask (2.6.29, not on all archs)
+# topology_core_siblings (not on all archs)
+# topology_thread_cpumask (2.6.29, not on all archs)
+# topology_thread_siblings (not on all archs)
+# cpumask_of_node/node_to_cpumask (not always exported)
+AC_DEFUN([LIBCFS_CPU_TOPOLOGY],
+[AC_MSG_CHECKING([whether have topology.h])
LB_LINUX_TRY_COMPILE([
- #include <net/netlink.h>
+ #include <linux/topology.h>
],[],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_NETLINK, 1, [net/netlink.h found])
-
- AC_MSG_CHECKING([if nlmsg_new takes a 2nd argument])
- LB_LINUX_TRY_COMPILE([
- #include <net/netlink.h>
- ],[
- nlmsg_new(100, GFP_KERNEL);
- ],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_NETLINK_NL2, 1, [nlmsg_new takes 2 args])
- ],[
- AC_MSG_RESULT([no])
- ])
+ AC_DEFINE(HAVE_CPU_TOPOLOGY, 1, [have CPU topology])
+ AC_MSG_RESULT(yes)
+
+ AC_MSG_CHECKING([whether have topology_core_cpumask])
+ LB_LINUX_TRY_COMPILE([
+ #include <linux/topology.h>
+ ],[
+ cpumask_t *mask = topology_core_cpumask(0);
+ ],[
+ AC_DEFINE(HAVE_TOPOLOGY_CORE_CPUMASK, 1,
+ [have topology_core_cpumask])
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+
+ AC_MSG_CHECKING([whether have topology_core_siblings])
+ LB_LINUX_TRY_COMPILE([
+ #include <linux/topology.h>
+ ],[
+ cpumask_t mask = topology_core_siblings(0);
+ ],[
+ AC_DEFINE(HAVE_TOPOLOGY_CORE_SIBLINGS, 1,
+ [have topology_core_siblings])
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+
+ AC_MSG_CHECKING([whether have topology_thread_cpumask])
+ LB_LINUX_TRY_COMPILE([
+ #include <linux/topology.h>
+ ],[
+ cpumask_t *mask = topology_thread_cpumask(0);
+ ],[
+ AC_DEFINE(HAVE_TOPOLOGY_THREAD_CPUMASK, 1,
+ [have topology_thread_cpumask])
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+
+ AC_MSG_CHECKING([whether have topology_thread_siblings])
+ LB_LINUX_TRY_COMPILE([
+ #include <linux/topology.h>
+ ],[
+ cpumask_t mask = topology_thread_siblings(0);
+ ],[
+ AC_DEFINE(HAVE_TOPOLOGY_THREAD_SIBLINGS, 1,
+ [have topology_thread_siblings])
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+
+ AC_MSG_CHECKING([whether OFED backports have cpumask_of_node])
+ # Some OFED has cpumask_of_node backports defined in
+ # its private include/linux/cpumask.h. However, it is
+ # defined conflictingly with kernel's cpumask_of_node.
+ if test -f $OFED_BACKPORT_PATH/linux/cpumask.h; then
+ grep -q cpumask_of_node $OFED_BACKPORT_PATH/linux/cpumask.h 2>/dev/null
+ rc=$?
+ if test $rc -eq 0; then
+ AC_DEFINE(HAVE_OFED_CPUMASK_OF_NODE, 1, [have cpumask_of_node])
+ AC_MSG_RESULT(yes)
+ else
+ AC_MSG_RESULT(no)
+ fi
+ fi
+
+ AC_MSG_CHECKING([whether have cpumask_of_node])
+ LB_LINUX_TRY_COMPILE([
+ #include <linux/topology.h>
+ ],[
+ cpumask_t *mask = cpumask_of_node(0);
+ ],[
+ AC_DEFINE(HAVE_CPUMASK_OF_NODE, 1, [have cpumask_of_node])
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+
+ AC_MSG_CHECKING([whether have cpumask_copy])
+ LB_LINUX_TRY_COMPILE([
+ #include <linux/cpumask.h>
+ ],[
+ cpumask_copy(NULL, NULL);
+ ],[
+ AC_DEFINE(HAVE_CPUMASK_COPY, 1, [have cpumask_copy])
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+
+ AC_MSG_CHECKING([whether have node_to_cpumask])
+ LB_LINUX_TRY_COMPILE([
+ #include <linux/topology.h>
+ ],[
+ cpumask_t mask = node_to_cpumask(0);
+ ],[
+ AC_DEFINE(HAVE_NODE_TO_CPUMASK, 1, [have node_to_cpumask])
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_RESULT(no)
+ ])
],[
- AC_MSG_RESULT([no])
+ AC_MSG_RESULT(NO)
])
])
+
# 2.6.20 API change INIT_WORK use 2 args and not
# store data inside
AC_DEFUN([LIBCFS_3ARGS_INIT_WORK],
LB_LINUX_TRY_COMPILE([
#include <linux/workqueue.h>
],[
- struct work_struct work;
+ struct work_struct work __attribute__ ((unused));
INIT_WORK(&work, NULL, NULL);
],[
LB_LINUX_TRY_COMPILE([
#include <linux/sysctl.h>
],[
- return register_sysctl_table(NULL,0);
+ register_sysctl_table(NULL,0);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1,
])
])
-# 2.6.21 marks kmem_cache_t deprecated and uses struct kmem_cache
-# instead
-AC_DEFUN([LIBCFS_KMEM_CACHE],
-[AC_MSG_CHECKING([check kernel has struct kmem_cache])
-tmp_flags="$EXTRA_KCFLAGS"
-EXTRA_KCFLAGS="-Werror"
-LB_LINUX_TRY_COMPILE([
- #include <linux/slab.h>
- typedef struct kmem_cache cache_t;
-],[
- cache_t *cachep = NULL;
-
- kmem_cache_alloc(cachep, 0);
-],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_KMEM_CACHE, 1,
- [kernel has struct kmem_cache])
-],[
- AC_MSG_RESULT(NO)
-])
-EXTRA_KCFLAGS="$tmp_flags"
-])
-
# 2.6.23 lost dtor argument
AC_DEFUN([LIBCFS_KMEM_CACHE_CREATE_DTOR],
[AC_MSG_CHECKING([check kmem_cache_create has dtor argument])
])
])
-# 2.6.24
-AC_DEFUN([LIBCFS_NETLINK_CBMUTEX],
-[AC_MSG_CHECKING([for mutex in netlink_kernel_create])
+#2.6.23 has new shrinker API
+AC_DEFUN([LC_REGISTER_SHRINKER],
+[AC_MSG_CHECKING([if kernel has register_shrinker])
LB_LINUX_TRY_COMPILE([
- #include <linux/netlink.h>
-],[
- struct mutex *lock = NULL;
-
- netlink_kernel_create(0, 0, NULL, lock, NULL);
+ #include <linux/mm.h>
],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_NETLINK_CBMUTEX, 1,
- [netlink_kernel_create want mutex for callback])
+ register_shrinker(NULL);
+], [
+ AC_MSG_RESULT([yes])
+ AC_DEFINE(HAVE_REGISTER_SHRINKER, 1,
+ [kernel has register_shrinker])
],[
- AC_MSG_RESULT(NO)
+ AC_MSG_RESULT([no])
])
])
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SCATTERLIST_SETPAGE, 1,
- [struct scatterlist has page member])
+ [struct scatterlist has no page member])
],[
AC_MSG_RESULT(NO)
])
])
-# from 2.6.24 please use sg_init_table
+# 2.6.24-rc1 sg_init_table
AC_DEFUN([LIBCFS_SCATTERLIST_INITTABLE],
-[AC_MSG_CHECKING([if sg_init_table is defined])
+[AC_MSG_CHECKING([for sg_init_table])
LB_LINUX_TRY_COMPILE([
- #include <linux/scatterlist.h>
+ #include <asm/types.h>
+ #include <linux/scatterlist.h>
],[
- sg_init_table(NULL,0);
+ sg_init_table(NULL,0);
],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_SCATTERLIST_INITTABLE, 1,
- [sg_init_table is defined])
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_SCATTERLIST_INITTABLE, 1,
+ [scatterlist has sg_init_table])
],[
- AC_MSG_RESULT(NO)
+ AC_MSG_RESULT(NO)
])
])
-# 2.6.24
+# 2.6.24
AC_DEFUN([LIBCFS_NETWORK_NAMESPACE],
[AC_MSG_CHECKING([for network stack has namespaces])
LB_LINUX_TRY_COMPILE([
#include <net/net_namespace.h>
],[
- struct net *net = &init_net;
+ struct net *net __attribute__ ((unused));
+ net = &init_net;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_INIT_NET, 1,
])
])
-
-# 2.6.24
-AC_DEFUN([LIBCFS_NETLINK_NETNS],
-[AC_MSG_CHECKING([for netlink support net ns])
-LB_LINUX_TRY_COMPILE([
- #include <linux/netlink.h>
-],[
- struct net *net = NULL;
- struct mutex *lock = NULL;
-
- netlink_kernel_create(net, 0, 0, NULL,
- lock,
- NULL);
-],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_NETLINK_NS, 1,
- [netlink is support network namespace])
-# XXX
-# for now - if kernel have netlink ns - he uses cbmutex
- AC_DEFINE(HAVE_NETLINK_CBMUTEX, 1,
- [netlink_kernel_create want mutex for callback])
-
-],[
- AC_MSG_RESULT(NO)
-])
-])
-
-# ~2.6.24
-AC_DEFUN([LIBCFS_NL_BROADCAST_GFP],
-[AC_MSG_CHECKING([for netlink_broadcast is want to have gfp parameter])
-LB_LINUX_TRY_COMPILE([
- #include <linux/netlink.h>
-],[
- gfp_t gfp = GFP_KERNEL;
-
- netlink_broadcast(NULL, NULL, 0, 0, gfp);
-],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_NL_BROADCAST_GFP, 1,
- [netlink brouacast is want to have gfp paramter])
-],[
- AC_MSG_RESULT(NO)
-])
-])
-
#
# LIBCFS_FUNC_DUMP_TRACE
#
#
AC_DEFUN([LIBCFS_FUNC_DUMP_TRACE],
[LB_CHECK_SYMBOL_EXPORT([dump_trace],
-[kernel/ksyms.c arch/${LINUX_ARCH%_64}/kernel/traps_64.c],[
+[kernel/ksyms.c arch/${LINUX_ARCH%_64}/kernel/traps_64.c arch/x86/kernel/dumpstack_32.c arch/x86/kernel/dumpstack_64.c],[
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Werror"
AC_MSG_CHECKING([whether we can really use dump_trace])
LB_LINUX_TRY_COMPILE([
struct task_struct;
struct pt_regs;
- void print_addr(void *data, unsigned long addr, int reliable);
#include <asm/stacktrace.h>
],[
- struct stacktrace_ops ops;
-
- ops.address = print_addr;
+ ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_TRACE_ADDRESS_RELIABLE, 1,
AC_MSG_RESULT(no)
],[
])
+ AC_MSG_CHECKING([whether stacktrace_ops.warning is exist])
+ LB_LINUX_TRY_COMPILE([
+ struct task_struct;
+ struct pt_regs;
+ #include <asm/stacktrace.h>
+ ],[
+ ((struct stacktrace_ops *)0)->warning(NULL, NULL);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_STACKTRACE_WARNING, 1, [stacktrace_ops.warning is exist])
+ ],[
+ AC_MSG_RESULT(no)
+ ],[
+ ])
+ AC_MSG_CHECKING([dump_trace want address])
+ LB_LINUX_TRY_COMPILE([
+ struct task_struct;
+ struct pt_regs;
+ #include <asm/stacktrace.h>
+ ],[
+ dump_trace(NULL, NULL, NULL, 0, NULL, NULL);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_DUMP_TRACE_ADDRESS, 1,
+ [dump_trace want address argument])
+ ],[
+ AC_MSG_RESULT(no)
+ ],[
+ ])
+
EXTRA_KCFLAGS="$tmp_flags"
])
])
LB_LINUX_TRY_COMPILE([
#include <asm/semaphore.h>
],[
- struct semaphore s;
-
+ struct semaphore s __attribute__ ((unused));
+
atomic_read(&s.count);
],[
AC_MSG_RESULT(yes)
],[
uid_t uid;
- uid = current_uid();
+ uid = current_uid() + sizeof(uid);
],[
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_CRED_WRAPPERS, 1, [task's cred wrappers found])
])
])
+# LIBCFS_STRUCT_SHASH_ALG
+# struct shash_alg was introduced in 2.6.29
+#
+AC_DEFUN([LIBCFS_STRUCT_SHASH_ALG],
+[AC_MSG_CHECKING([if kernel has struct shash_alg])
+LB_LINUX_TRY_COMPILE([
+ #include <linux/err.h>
+ #include <crypto/internal/hash.h>
+],[
+ struct shash_alg foo;
+],[
+ AC_MSG_RESULT([yes])
+ AC_DEFINE(HAVE_STRUCT_SHASH_ALG, 1, [kernel has struct shash_alg])
+],[
+ AC_MSG_RESULT([no])
+])
+])
+
+
#
# LIBCFS_FUNC_UNSHARE_FS_STRUCT
#
LB_LINUX_TRY_COMPILE([
#include <linux/compat.h>
],[
- int i = is_compat_task();
+ int i __attribute__ ((unused));
+ i = is_compat_task();
],[
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_IS_COMPAT_TASK, 1, [is_compat_task() is available])
])
#
+# LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
+#
+# 2.6.32-30.el6 adds a new 'walk_stack' field in 'struct stacktrace_ops'
+#
+AC_DEFUN([LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK],
+[AC_MSG_CHECKING([if 'struct stacktrace_ops' has 'walk_stack' field])
+LB_LINUX_TRY_COMPILE([
+ #include <asm/stacktrace.h>
+],[
+ ((struct stacktrace_ops *)0)->walk_stack(NULL, NULL, 0, NULL, NULL, NULL, NULL);
+],[
+ AC_MSG_RESULT([yes])
+ AC_DEFINE(STACKTRACE_OPS_HAVE_WALK_STACK, 1, ['struct stacktrace_ops' has 'walk_stack' field])
+],[
+ AC_MSG_RESULT([no])
+])
+])
+
+AC_DEFUN([LIBCFS_HAVE_OOM_H],
+[LB_CHECK_FILE([$LINUX/include/linux/oom.h], [
+ AC_DEFINE(HAVE_LINUX_OOM_H, 1,
+ [kernel has include/oom.h])
+],[
+ AC_MSG_RESULT([no])
+])
+])
+
+AC_DEFUN([LIBCFS_HAVE_KEYTYPE_H],
+[LB_CHECK_FILE([$LINUX/include/linux/key-type.h], [
+ AC_DEFINE(HAVE_LINUX_KEYTYPE_H, 1,
+ [kernel has include/key-type.h])
+],[
+ AC_MSG_RESULT([no])
+])
+])
+
+#
+# check set_mems_allowed
+# 2.6.31 adds function set_mems_allowed in cpuset.h
+#
+AC_DEFUN([LIBCFS_HAVE_SET_MEMS_ALLOWED],
+[AC_MSG_CHECKING([whether have set_mems_allowed()])
+LB_LINUX_TRY_COMPILE([
+ #include <linux/cpuset.h>
+],[
+ nodemask_t mask;
+
+ set_mems_allowed(mask);
+],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_SET_MEMS_ALLOWED, 1, [have set_mems_allowed()])
+],[
+ AC_MSG_RESULT(NO)
+])
+])
+
+
+#
+# RHEL6/2.6.32 want to have pointer to shrinker self pointer in handler function
+#
+AC_DEFUN([LC_SHRINKER_WANT_SHRINK_PTR],
+[AC_MSG_CHECKING([shrinker want self pointer in handler])
+LB_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+],[
+ struct shrinker *tmp = NULL;
+ tmp->shrink(tmp, 0, 0);
+],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_SHRINKER_WANT_SHRINK_PTR, 1,
+ [shrinker want self pointer in handler])
+],[
+ AC_MSG_RESULT(no)
+])
+])
+
+# 2.6.18 store oom parameters in task struct.
+# 2.6.32 store oom parameters in signal struct
+AC_DEFUN([LIBCFS_OOMADJ_IN_SIG],
+[AC_MSG_CHECKING([kernel store oom parameters in task])
+LB_LINUX_TRY_COMPILE([
+ #include <linux/sched.h>
+],[
+ ((struct signal_struct *)0)->oom_adj = 0;
+],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_OOMADJ_IN_SIG, 1,
+ [kernel store a oom parameters in signal struct])
+],[
+ AC_MSG_RESULT(no)
+])
+])
+
+#
+# 2.6.33 no longer has ctl_name & strategy field in struct ctl_table.
+#
+AC_DEFUN([LIBCFS_SYSCTL_CTLNAME],
+[AC_MSG_CHECKING([if ctl_table has a ctl_name field])
+LB_LINUX_TRY_COMPILE([
+ #include <linux/sysctl.h>
+],[
+ struct ctl_table ct;
+ ct.ctl_name = sizeof(ct);
+],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_SYSCTL_CTLNAME, 1,
+ [ctl_table has ctl_name field])
+],[
+ AC_MSG_RESULT(no)
+])
+])
+
+#
+# LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE
+#
+# 2.6.34 adds __add_wait_queue_exclusive
+#
+AC_DEFUN([LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE],
+[AC_MSG_CHECKING([if __add_wait_queue_exclusive exists])
+LB_LINUX_TRY_COMPILE([
+ #include <linux/wait.h>
+],[
+ wait_queue_head_t queue;
+ wait_queue_t wait;
+
+ __add_wait_queue_exclusive(&queue, &wait);
+],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE___ADD_WAIT_QUEUE_EXCLUSIVE, 1,
+ [__add_wait_queue_exclusive exists])
+],[
+ AC_MSG_RESULT(no)
+])
+])
+
+#
+# 2.6.35 kernel has sk_sleep function
+#
+AC_DEFUN([LC_SK_SLEEP],
+[AC_MSG_CHECKING([if kernel has sk_sleep])
+LB_LINUX_TRY_COMPILE([
+ #include <net/sock.h>
+],[
+ sk_sleep(NULL);
+],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_SK_SLEEP, 1, [kernel has sk_sleep])
+],[
+ AC_MSG_RESULT(no)
+])
+])
+
+#
+# FC15 2.6.40-5 backported the "shrink_control" parameter to the memory
+# pressure shrinker from Linux 3.0
+#
+AC_DEFUN([LC_SHRINK_CONTROL],
+[AC_MSG_CHECKING([shrink_control is present])
+LB_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+],[
+ struct shrink_control tmp = {0};
+ tmp.nr_to_scan = sizeof(tmp);
+],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_SHRINK_CONTROL, 1,
+ [shrink_control is present])
+],[
+ AC_MSG_RESULT(no)
+])
+])
+
+#
# LIBCFS_PROG_LINUX
#
# LNet linux kernel checks
#
AC_DEFUN([LIBCFS_PROG_LINUX],
[
-LIBCFS_FUNC_CPU_ONLINE
-LIBCFS_TYPE_GFP_T
-LIBCFS_TYPE_CPUMASK_T
LIBCFS_CONFIG_PANIC_DUMPLOG
-LIBCFS_STRUCT_PAGE_LIST
-LIBCFS_STRUCT_SIGHAND
-LIBCFS_FUNC_SHOW_TASK
-LIBCFS_U64_LONG_LONG
-LIBCFS_TASK_RCU
+LIBCFS_U64_LONG_LONG_LINUX
# 2.6.18
LIBCFS_TASKLIST_LOCK
LIBCFS_HAVE_IS_COMPAT_TASK
+LIBCFS_DIGEST_SETKEY_FLAGS
# 2.6.19
-LIBCFS_NETLINK
-LIBCFS_NLMSG_MULTICAST
LIBCFS_KMEM_CACHE_DESTROY_INT
-LIBCFS_ATOMIC_PANIC_NOTIFIER
# 2.6.20
LIBCFS_3ARGS_INIT_WORK
# 2.6.21
LIBCFS_2ARGS_REGISTER_SYSCTL
-LIBCFS_KMEM_CACHE
# 2.6.23
LIBCFS_KMEM_CACHE_CREATE_DTOR
-LIBCFS_NETLINK_CBMUTEX
+LC_REGISTER_SHRINKER
# 2.6.24
LIBCFS_SYSCTL_UNNUMBERED
LIBCFS_SCATTERLIST_SETPAGE
LIBCFS_SCATTERLIST_INITTABLE
-LIBCFS_NL_BROADCAST_GFP
LIBCFS_NETWORK_NAMESPACE
-LIBCFS_NETLINK_NETNS
LIBCFS_FUNC_DUMP_TRACE
+LIBCFS_HAVE_KEYTYPE_H
# 2.6.26
LIBCFS_SEM_COUNT
# 2.6.27
LIBCFS_CRED_WRAPPERS
+# 2.6.28
+LIBCFS_CPUMASK_SIZE
# 2.6.29
LIBCFS_STRUCT_CRED_IN_TASK
+LIBCFS_CPU_TOPOLOGY
+LIBCFS_STRUCT_SHASH_ALG
# 2.6.30
LIBCFS_FUNC_UNSHARE_FS_STRUCT
LIBCFS_SOCK_MAP_FD_2ARG
+# 2.6.31
+LIBCFS_HAVE_SET_MEMS_ALLOWED
+# 2.6.32
+LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
+LC_SHRINKER_WANT_SHRINK_PTR
+LIBCFS_HAVE_OOM_H
+LIBCFS_OOMADJ_IN_SIG
+# 2.6.33
+LIBCFS_SYSCTL_CTLNAME
+# 2.6.34
+LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE
+# 2.6.35
+LC_SK_SLEEP
+# 2.6.40 fc15
+LC_SHRINK_CONTROL
])
#
# lnet/utils/wirecheck.c
AC_CHECK_FUNCS([strnlen])
+# lnet/libcfs/user-prim.c, missing for RHEL5 and earlier userspace
+AC_CHECK_FUNCS([strlcpy])
+
+# libcfs/libcfs/user-prim.c, missing for RHEL5 and earlier userspace
+AC_CHECK_FUNCS([strlcat])
+
AC_CHECK_TYPE([umode_t],
[AC_DEFINE(HAVE_UMODE_T, 1, [umode_t is defined])],
[],
[],
[#include <asm/types.h>])
+# check userland __u64 type
+AC_MSG_CHECKING([userspace __u64 is long long type])
+tmp_flags="$CFLAGS"
+CFLAGS="$CFLAGS -Werror"
+AC_COMPILE_IFELSE([
+ #include <stdio.h>
+ #include <linux/types.h>
+ #include <linux/stddef.h>
+ int main(void) {
+ unsigned long long *data1;
+ __u64 *data2 = NULL;
+
+ data1 = data2;
+ data2 = data1;
+ return 0;
+ }
+],[
+ AC_MSG_RESULT([yes])
+ AC_DEFINE(HAVE_USER__U64_LONG_LONG, 1,
+ [__u64 is long long type])
+],[
+ AC_MSG_RESULT([no])
+])
+CFLAGS="$tmp_flags"
+
# -------- Check for required packages --------------
fi
AC_SUBST(LIBEFENCE)
-# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_pthread.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-# AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-#
-# DESCRIPTION
-#
-# This macro figures out how to build C programs using POSIX threads. It
-# sets the PTHREAD_LIBS output variable to the threads library and linker
-# flags, and the PTHREAD_CFLAGS output variable to any special C compiler
-# flags that are needed. (The user can also force certain compiler
-# flags/libs to be tested by setting these environment variables.)
-#
-# Also sets PTHREAD_CC to any special C compiler that is needed for
-# multi-threaded programs (defaults to the value of CC otherwise). (This
-# is necessary on AIX to use the special cc_r compiler alias.)
-#
-# NOTE: You are assumed to not only compile your program with these flags,
-# but also link it with them as well. e.g. you should link with
-# $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
-#
-# If you are only building threads programs, you may wish to use these
-# variables in your default LIBS, CFLAGS, and CC:
-#
-# LIBS="$PTHREAD_LIBS $LIBS"
-# CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-# CC="$PTHREAD_CC"
-#
-# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
-# has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to that name
-# (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
-#
-# ACTION-IF-FOUND is a list of shell commands to run if a threads library
-# is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it
-# is not found. If ACTION-IF-FOUND is not specified, the default action
-# will define HAVE_PTHREAD.
-#
-# Please let the authors know if this macro fails on any platform, or if
-# you have any other suggestions or comments. This macro was based on work
-# by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help
-# from M. Frigo), as well as ac_pthread and hb_pthread macros posted by
-# Alejandro Forero Cuervo to the autoconf macro repository. We are also
-# grateful for the helpful feedback of numerous users.
-#
-# LICENSE
-#
-# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
-#
-# This program is free software: you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by the
-# Free Software Foundation, either version 3 of the License, or (at your
-# option) any later version.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
-# Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program. If not, see <http://www.gnu.org/licenses/>.
-#
-# As a special exception, the respective Autoconf Macro's copyright owner
-# gives unlimited permission to copy, distribute and modify the configure
-# scripts that are the output of Autoconf when processing the Macro. You
-# need not follow the terms of the GNU General Public License when using
-# or distributing such scripts, even though portions of the text of the
-# Macro appear in them. The GNU General Public License (GPL) does govern
-# all other use of the material that constitutes the Autoconf Macro.
-#
-# This special exception to the GPL applies to versions of the Autoconf
-# Macro released by the Autoconf Archive. When you make and distribute a
-# modified version of the Autoconf Macro, you may extend this special
-# exception to the GPL to apply to your modified version as well.
-
-#serial 8
-
-AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
-AC_DEFUN([AX_PTHREAD], [
-AC_REQUIRE([AC_CANONICAL_HOST])
-AC_LANG_SAVE
-AC_LANG_C
-ax_pthread_ok=no
-
-# We used to check for pthread.h first, but this fails if pthread.h
-# requires special compiler flags (e.g. on True64 or Sequent).
-# It gets checked for in the link test anyway.
-
-# First of all, check if the user has set any of the PTHREAD_LIBS,
-# etcetera environment variables, and if threads linking works using
-# them:
-if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
- save_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
- save_LIBS="$LIBS"
- LIBS="$PTHREAD_LIBS $LIBS"
- AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
- AC_TRY_LINK_FUNC(pthread_join, ax_pthread_ok=yes)
- AC_MSG_RESULT($ax_pthread_ok)
- if test x"$ax_pthread_ok" = xno; then
- PTHREAD_LIBS=""
- PTHREAD_CFLAGS=""
- fi
- LIBS="$save_LIBS"
- CFLAGS="$save_CFLAGS"
-fi
-
-# We must check for the threads library under a number of different
-# names; the ordering is very important because some systems
-# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
-# libraries is broken (non-POSIX).
-
-# Create a list of thread flags to try. Items starting with a "-" are
-# C compiler flags, and other items are library names, except for "none"
-# which indicates that we try without any flags at all, and "pthread-config"
-# which is a program returning the flags for the Pth emulation library.
-
-ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
-
-# The ordering *is* (sometimes) important. Some notes on the
-# individual items follow:
-
-# pthreads: AIX (must check this before -lpthread)
-# none: in case threads are in libc; should be tried before -Kthread and
-# other compiler flags to prevent continual compiler warnings
-# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
-# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
-# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
-# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
-# -pthreads: Solaris/gcc
-# -mthreads: Mingw32/gcc, Lynx/gcc
-# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
-# doesn't hurt to check since this sometimes defines pthreads too;
-# also defines -D_REENTRANT)
-# ... -mt is also the pthreads flag for HP/aCC
-# pthread: Linux, etcetera
-# --thread-safe: KAI C++
-# pthread-config: use pthread-config program (for GNU Pth library)
-
-case "${host_cpu}-${host_os}" in
- *solaris*)
-
- # On Solaris (at least, for some versions), libc contains stubbed
- # (non-functional) versions of the pthreads routines, so link-based
- # tests will erroneously succeed. (We need to link with -pthreads/-mt/
- # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
- # a function called by this macro, so we could check for that, but
- # who knows whether they'll stub that too in a future libc.) So,
- # we'll just look for -pthreads and -lpthread first:
-
- ax_pthread_flags="-pthreads pthread -mt -pthread $ax_pthread_flags"
- ;;
-
- *-darwin*)
- ax_pthread_flags="-pthread $ax_pthread_flags"
- ;;
-esac
-
-if test x"$ax_pthread_ok" = xno; then
-for flag in $ax_pthread_flags; do
-
- case $flag in
- none)
- AC_MSG_CHECKING([whether pthreads work without any flags])
- ;;
-
- -*)
- AC_MSG_CHECKING([whether pthreads work with $flag])
- PTHREAD_CFLAGS="$flag"
- ;;
-
- pthread-config)
- AC_CHECK_PROG(ax_pthread_config, pthread-config, yes, no)
- if test x"$ax_pthread_config" = xno; then continue; fi
- PTHREAD_CFLAGS="`pthread-config --cflags`"
- PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
- ;;
-
- *)
- AC_MSG_CHECKING([for the pthreads library -l$flag])
- PTHREAD_LIBS="-l$flag"
- ;;
- esac
-
- save_LIBS="$LIBS"
- save_CFLAGS="$CFLAGS"
- LIBS="$PTHREAD_LIBS $LIBS"
- CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
- # Check for various functions. We must include pthread.h,
- # since some functions may be macros. (On the Sequent, we
- # need a special flag -Kthread to make this header compile.)
- # We check for pthread_join because it is in -lpthread on IRIX
- # while pthread_create is in libc. We check for pthread_attr_init
- # due to DEC craziness with -lpthreads. We check for
- # pthread_cleanup_push because it is one of the few pthread
- # functions on Solaris that doesn't have a non-functional libc stub.
- # We try pthread_create on general principles.
- AC_TRY_LINK([#include <pthread.h>
- static void routine(void* a) {a=0;}
- static void* start_routine(void* a) {return a;}],
- [pthread_t th; pthread_attr_t attr;
- pthread_join(th, 0);
- pthread_attr_init(&attr);
- pthread_cleanup_push(routine, 0);
- pthread_create(&th,0,start_routine,0);
- pthread_cleanup_pop(0); ],
- [ax_pthread_ok=yes])
-
- LIBS="$save_LIBS"
- CFLAGS="$save_CFLAGS"
-
- AC_MSG_RESULT($ax_pthread_ok)
- if test "x$ax_pthread_ok" = xyes; then
- break;
- fi
-
- PTHREAD_LIBS=""
- PTHREAD_CFLAGS=""
-done
-fi
-# Various other checks:
-if test "x$ax_pthread_ok" = xyes; then
- save_LIBS="$LIBS"
- LIBS="$PTHREAD_LIBS $LIBS"
- save_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
- # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
- AC_MSG_CHECKING([for joinable pthread attribute])
- attr_name=unknown
- for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
- AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
- [attr_name=$attr; break])
- done
- AC_MSG_RESULT($attr_name)
- if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
- AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
- [Define to necessary symbol if this constant
- uses a non-standard name on your system.])
- fi
-
- AC_MSG_CHECKING([if more special flags are required for pthreads])
- flag=no
- case "${host_cpu}-${host_os}" in
- *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
- *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
- esac
- AC_MSG_RESULT(${flag})
- if test "x$flag" != xno; then
- PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
- fi
-
- LIBS="$save_LIBS"
- CFLAGS="$save_CFLAGS"
-
- # More AIX lossage: must compile with xlc_r or cc_r
- if test x"$GCC" != xyes; then
- AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
- else
- PTHREAD_CC=$CC
+# -------- check for -lpthread support ----
+AC_MSG_CHECKING([whether to use libpthread for libcfs library])
+AC_ARG_ENABLE([libpthread],
+ AC_HELP_STRING([--disable-libpthread],
+ [disable libpthread]),
+ [],[enable_libpthread=yes])
+if test "$enable_libpthread" = "yes" ; then
+ AC_CHECK_LIB([pthread], [pthread_create],
+ [ENABLE_LIBPTHREAD="yes"],
+ [ENABLE_LIBPTHREAD="no"])
+ if test "$ENABLE_LIBPTHREAD" = "yes" ; then
+ AC_MSG_RESULT([$ENABLE_LIBPTHREAD])
+ PTHREAD_LIBS="-lpthread"
+ AC_DEFINE([HAVE_LIBPTHREAD], 1, [use libpthread])
+ else
+ PTHREAD_LIBS=""
+ AC_MSG_RESULT([no libpthread is found])
fi
+ AC_SUBST(PTHREAD_LIBS)
else
- PTHREAD_CC="$CC"
-fi
-
-AC_SUBST(PTHREAD_LIBS)
-AC_SUBST(PTHREAD_CFLAGS)
-AC_SUBST(PTHREAD_CC)
-
-# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
-if test x"$ax_pthread_ok" = xyes; then
- ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
- :
-else
- ax_pthread_ok=no
- $2
+ AC_MSG_RESULT([no (disabled explicitly)])
+ ENABLE_LIBPTHREAD="no"
fi
-AC_LANG_RESTORE
-])dnl AX_PTHREAD
-
-AX_PTHREAD([[]])
+AC_SUBST(ENABLE_LIBPTHREAD)
])
git://git.whamcloud.com / fs / lustre-release.git / blobdiff