b=22375 Add walk_stack callback for dump_trace.

[fs/lustre-release.git] / libcfs / autoconf / lustre-libcfs.m4

diff --git a/libcfs/autoconf/lustre-libcfs.m4 b/libcfs/autoconf/lustre-libcfs.m4
index 49c5a21..e888679 100644 (file)
--- a/libcfs/autoconf/lustre-libcfs.m4
+++ b/libcfs/autoconf/lustre-libcfs.m4
@@ -60,46 +60,6 @@ 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
@@ -107,14 +67,14 @@ LB_LINUX_TRY_COMPILE([
 AC_DEFUN([LIBCFS_FUNC_CPU_ONLINE],
 [AC_MSG_CHECKING([if kernel defines cpu_online()])
 LB_LINUX_TRY_COMPILE([
-       #include <linux/sched.h>
+       #include <linux/sched.h>
 ],[
-       cpu_online(0);
+       cpu_online(0);
 ],[
-       AC_MSG_RESULT([yes])
-       AC_DEFINE(HAVE_CPU_ONLINE, 1, [cpu_online found])
+       AC_MSG_RESULT([yes])
+       AC_DEFINE(HAVE_CPU_ONLINE, 1, [cpu_online found])
 ],[
-       AC_MSG_RESULT([no])
+       AC_MSG_RESULT([no])
 ])
 ])
 
@@ -138,25 +98,6 @@ LB_LINUX_TRY_COMPILE([
 ])
 
 #
-# 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)
@@ -175,6 +116,7 @@ AC_DEFUN([LIBCFS_U64_LONG_LONG],
 tmp_flags="$CFLAGS"
 CFLAGS="$CFLAGS -Werror"
 AC_COMPILE_IFELSE([
+       #include <stdio.h>
        #include <linux/types.h>
        #include <linux/stddef.h>
        int main(void) {
@@ -452,22 +394,6 @@ LB_LINUX_TRY_COMPILE([
 ])
 ])
 
-# from 2.6.24 please use sg_init_table
-AC_DEFUN([LIBCFS_SCATTERLIST_INITTABLE],
-[AC_MSG_CHECKING([if sg_init_table is defined])
-LB_LINUX_TRY_COMPILE([
-        #include <linux/scatterlist.h>
-],[
-       sg_init_table(NULL,0);
-],[
-        AC_MSG_RESULT(yes)
-        AC_DEFINE(HAVE_SCATTERLIST_INITTABLE, 1,
-                  [sg_init_table is defined])
-],[
-        AC_MSG_RESULT(NO)
-])
-])
-
 # 2.6.24 
 AC_DEFUN([LIBCFS_NETWORK_NAMESPACE],
 [AC_MSG_CHECKING([for network stack has namespaces])
@@ -675,6 +601,54 @@ EXTRA_KCFLAGS="$tmp_flags"
 ])
 
 #
+# LIBCFS_HAVE_IS_COMPAT_TASK
+#
+# Added in 2.6.17, it wasn't until 2.6.29 that all
+# Linux architectures have is_compat_task()
+#
+AC_DEFUN([LIBCFS_HAVE_IS_COMPAT_TASK],
+[AC_MSG_CHECKING([if is_compat_task() is declared])
+LB_LINUX_TRY_COMPILE([
+        #include <linux/compat.h>
+],[
+        int i = is_compat_task();
+],[
+        AC_MSG_RESULT([yes])
+        AC_DEFINE(HAVE_IS_COMPAT_TASK, 1, [is_compat_task() is available])
+],[
+        AC_MSG_RESULT([no])
+])
+])
+
+#
+# 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>
+       unsigned long walkstack(struct thread_info *tinfo,
+                                           unsigned long *stack,
+                                           unsigned long bp,
+                                           const struct stacktrace_ops *ops,
+                                           void *data,
+                                           unsigned long *end,
+                                           int *graph);
+],[
+        struct stacktrace_ops ops;
+
+       ops.walk_stack = walkstack;
+],[
+        AC_MSG_RESULT([yes])
+        AC_DEFINE(STACKTRACE_OPS_HAVE_WALK_STACK, 1, ['struct stacktrace_ops' has 'walk_stack' field])
+],[
+        AC_MSG_RESULT([no])
+])
+])
+
+#
 # LIBCFS_PROG_LINUX
 #
 # LNet linux kernel checks
@@ -683,16 +657,14 @@ 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
 # 2.6.18
 LIBCFS_TASKLIST_LOCK
+LIBCFS_HAVE_IS_COMPAT_TASK
 # 2.6.19
 LIBCFS_NETLINK
 LIBCFS_NLMSG_MULTICAST
@@ -709,7 +681,6 @@ LIBCFS_NETLINK_CBMUTEX
 # 2.6.24
 LIBCFS_SYSCTL_UNNUMBERED
 LIBCFS_SCATTERLIST_SETPAGE
-LIBCFS_SCATTERLIST_INITTABLE
 LIBCFS_NL_BROADCAST_GFP
 LIBCFS_NETWORK_NAMESPACE
 LIBCFS_NETLINK_NETNS
@@ -723,6 +694,8 @@ LIBCFS_STRUCT_CRED_IN_TASK
 # 2.6.30
 LIBCFS_FUNC_UNSHARE_FS_STRUCT
 LIBCFS_SOCK_MAP_FD_2ARG
+# 2.6.32
+LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
 ])
 
 #