linux-2621-20070222

[openafs.git] / src / cf / linux-test4.m4

diff --git a/src/cf/linux-test4.m4 b/src/cf/linux-test4.m4
index 61b92c8..3002d93 100644 (file)
--- a/src/cf/linux-test4.m4
+++ b/src/cf/linux-test4.m4
@@ -1,3 +1,17 @@
+AC_DEFUN([LINUX_EXPORTS_TASKLIST_LOCK], [
+  AC_MSG_CHECKING([for exported tasklist_lock])
+  AC_CACHE_VAL([ac_cv_linux_exports_tasklist_lock], [
+    AC_TRY_KBUILD(
+[
+#include <linux/sched.h>],
+[
+extern rwlock_t tasklist_lock __attribute__((weak)); 
+],
+      ac_cv_linux_exports_tasklist_lock=yes,
+      ac_cv_linux_exports_tasklist_lock=no)])
+  AC_MSG_RESULT($ac_cv_linux_exports_tasklist_lock)])
+
+
 AC_DEFUN([LINUX_CONFIG_H_EXISTS], [
   AC_MSG_CHECKING([for linux/config.h existance])
   AC_CACHE_VAL([ac_cv_linux_config_h_exists], [
@@ -333,6 +347,18 @@ printk("%d\n", _tsk.parent);],
   AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_parent)])
 
 
+AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_TGID], [
+  AC_MSG_CHECKING([for tgid in struct task_struct])
+  AC_CACHE_VAL([ac_cv_linux_sched_struct_task_struct_has_tgid], [
+    AC_TRY_KBUILD(
+[#include <linux/sched.h>],
+[struct task_struct _tsk;
+printk("%d\n", _tsk.tgid);],
+      ac_cv_linux_sched_struct_task_struct_has_tgid=yes,
+      ac_cv_linux_sched_struct_task_struct_has_tgid=no)])
+  AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_tgid)])
+
+
 AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_REAL_PARENT], [
   AC_MSG_CHECKING([for real_parent in struct task_struct])
   AC_CACHE_VAL([ac_cv_linux_sched_struct_task_struct_has_real_parent], [
@@ -761,3 +787,26 @@ INIT_WORK(w,f,i);],
       ac_cv_linux_init_work_has_data=no)])
   AC_MSG_RESULT($ac_cv_linux_init_work_has_data)])
 
+
+AC_DEFUN([LINUX_FS_STRUCT_FOP_HAS_FLOCK], [
+  AC_MSG_CHECKING([for flock in struct file_operations])
+  AC_CACHE_VAL([ac_cv_linux_fs_struct_fop_has_flock], [
+    AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[struct file_operations _fop;
+_fop.flock(NULL, 0, NULL);],
+      ac_cv_linux_fs_struct_fop_has_flock=yes,
+      ac_cv_linux_fs_struct_fop_has_flock=no)])
+  AC_MSG_RESULT($ac_cv_linux_fs_struct_fop_has_flock)])
+
+AC_DEFUN([LINUX_REGISTER_SYSCTL_TABLE_NOFLAG], [
+  AC_MSG_CHECKING([whether register_sysctl_table has an insert_at_head flag argument])
+  AC_CACHE_VAL([ac_cv_linux_register_sysctl_table_noflag], [
+    AC_TRY_KBUILD(
+[#include <linux/sysctl.h>],
+[ctl_table *t;
+register_sysctl_table (t);],
+      ac_cv_linux_register_sysctl_table_noflag=yes,
+      ac_cv_linux_register_sysctl_table_noflag=no)])
+  AC_MSG_RESULT($ac_cv_linux_register_sysctl_table_noflag)])
+