fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / linux / vs_context.h

diff --git a/include/linux/vs_context.h b/include/linux/vs_context.h
index 5fcfa0f..fe3d6db 100644 (file)
--- a/include/linux/vs_context.h
+++ b/include/linux/vs_context.h
@@ -1,7 +1,9 @@
-#ifndef _VX_VS_CONTEXT_H
-#define _VX_VS_CONTEXT_H
+#ifndef _VS_CONTEXT_H
+#define _VS_CONTEXT_H
 
-#include <linux/kernel.h>
+#include "vserver/base.h"
+#include "vserver/context.h"
+#include "vserver/history.h"
 #include "vserver/debug.h"
 
 
@@ -170,29 +172,48 @@ static inline void __wakeup_vx_info(struct vx_info *vxi)
                wake_up_interruptible(&vxi->vx_wait);
 }
 
-extern void exit_vx_info(struct task_struct *, int);
-extern void exit_vx_info_early(struct task_struct *, int);
 
-static inline
-struct task_struct *vx_child_reaper(struct task_struct *p)
+#define enter_vx_info(v,s)     __enter_vx_info(v,s,__FILE__,__LINE__)
+
+static inline void __enter_vx_info(struct vx_info *vxi,
+       struct vx_info_save *vxis, const char *_file, int _line)
 {
-       struct vx_info *vxi = p->vx_info;
-       struct task_struct *reaper = child_reaper;
+       vxlprintk(VXD_CBIT(xid, 5), "enter_vx_info(%p[#%d],%p) %p[#%d,%p]",
+               vxi, vxi ? vxi->vx_id : 0, vxis, current,
+               current->xid, current->vx_info, _file, _line);
+       vxis->vxi = xchg(&current->vx_info, vxi);
+       vxis->xid = current->xid;
+       current->xid = vxi ? vxi->vx_id : 0;
+}
 
-       if (!vxi)
-               goto out;
+#define leave_vx_info(s)       __leave_vx_info(s,__FILE__,__LINE__)
+
+static inline void __leave_vx_info(struct vx_info_save *vxis,
+       const char *_file, int _line)
+{
+       vxlprintk(VXD_CBIT(xid, 5), "leave_vx_info(%p[#%d,%p]) %p[#%d,%p]",
+               vxis, vxis->xid, vxis->vxi, current,
+               current->xid, current->vx_info, _file, _line);
+       (void)xchg(&current->vx_info, vxis->vxi);
+       current->xid = vxis->xid;
+}
 
-       BUG_ON(!p->vx_info->vx_reaper);
 
-       /* child reaper for the guest reaper */
-       if (vxi->vx_reaper == p)
-               goto out;
+static inline void __enter_vx_admin(struct vx_info_save *vxis)
+{
+       vxis->vxi = xchg(&current->vx_info, NULL);
+       vxis->xid = xchg(&current->xid, (xid_t)0);
+}
 
-       reaper = vxi->vx_reaper;
-out:
-       return reaper;
+static inline void __leave_vx_admin(struct vx_info_save *vxis)
+{
+       (void)xchg(&current->xid, vxis->xid);
+       (void)xchg(&current->vx_info, vxis->vxi);
 }
 
+extern void exit_vx_info(struct task_struct *, int);
+extern void exit_vx_info_early(struct task_struct *, int);
+
 
 #else
 #warning duplicate inclusion