Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / sem.h

diff --git a/kernel/include/linux/sem.h b/kernel/include/linux/sem.h
new file mode 100644 (file)
index 0000000..976ce3a
--- /dev/null
+++ b/kernel/include/linux/sem.h
@@ -0,0 +1,52 @@
+#ifndef _LINUX_SEM_H
+#define _LINUX_SEM_H
+
+#include <linux/atomic.h>
+#include <linux/rcupdate.h>
+#include <linux/cache.h>
+#include <uapi/linux/sem.h>
+
+struct task_struct;
+
+/* One sem_array data structure for each set of semaphores in the system. */
+struct sem_array {
+       struct kern_ipc_perm    ____cacheline_aligned_in_smp
+                               sem_perm;       /* permissions .. see ipc.h */
+       time_t                  sem_ctime;      /* last change time */
+       struct sem              *sem_base;      /* ptr to first semaphore in array */
+       struct list_head        pending_alter;  /* pending operations */
+                                               /* that alter the array */
+       struct list_head        pending_const;  /* pending complex operations */
+                                               /* that do not alter semvals */
+       struct list_head        list_id;        /* undo requests on this array */
+       int                     sem_nsems;      /* no. of semaphores in array */
+       int                     complex_count;  /* pending complex operations */
+};
+
+#ifdef CONFIG_SYSVIPC
+
+struct sysv_sem {
+       struct sem_undo_list *undo_list;
+};
+
+extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk);
+extern void exit_sem(struct task_struct *tsk);
+
+#else
+
+struct sysv_sem {
+       /* empty */
+};
+
+static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk)
+{
+       return 0;
+}
+
+static inline void exit_sem(struct task_struct *tsk)
+{
+       return;
+}
+#endif
+
+#endif /* _LINUX_SEM_H */