-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*/
/*
#ifndef __LIBCFS_PRIM_H__
#define __LIBCFS_PRIM_H__
+#ifndef CFS_EXPORT_SYMBOL
+# define CFS_EXPORT_SYMBOL(s)
+#endif
+
/*
* Schedule
*/
-void cfs_schedule_timeout(cfs_task_state_t state, int64_t timeout);
+void cfs_schedule_timeout_and_set_state(cfs_task_state_t state,
+ int64_t timeout);
+void cfs_schedule_timeout(int64_t timeout);
void cfs_schedule(void);
void cfs_pause(cfs_duration_t ticks);
+int cfs_need_resched(void);
+void cfs_cond_resched(void);
/*
* Wait Queues
void cfs_waitq_init(cfs_waitq_t *waitq);
void cfs_waitlink_init(cfs_waitlink_t *link);
void cfs_waitq_add(cfs_waitq_t *waitq, cfs_waitlink_t *link);
-void cfs_waitq_add_exclusive(cfs_waitq_t *waitq,
+void cfs_waitq_add_exclusive(cfs_waitq_t *waitq,
cfs_waitlink_t *link);
+void cfs_waitq_add_exclusive_head(cfs_waitq_t *waitq,
+ cfs_waitlink_t *link);
void cfs_waitq_del(cfs_waitq_t *waitq, cfs_waitlink_t *link);
int cfs_waitq_active(cfs_waitq_t *waitq);
void cfs_waitq_signal(cfs_waitq_t *waitq);
/*
* Timer
*/
-typedef void (cfs_timer_func_t)(unsigned long);
+typedef void (cfs_timer_func_t)(ulong_ptr_t);
void cfs_init_timer(cfs_timer_t *t);
void cfs_timer_init(cfs_timer_t *t, cfs_timer_func_t *func, void *arg);
void cfs_timer_disarm(cfs_timer_t *t);
int cfs_timer_is_armed(cfs_timer_t *t);
cfs_time_t cfs_timer_deadline(cfs_timer_t *t);
+
+/*
+ * Memory
+ */
+#ifndef cfs_memory_pressure_get
+#define cfs_memory_pressure_get() (0)
+#endif
+#ifndef cfs_memory_pressure_set
+#define cfs_memory_pressure_set() do {} while (0)
+#endif
+#ifndef cfs_memory_pressure_clr
+#define cfs_memory_pressure_clr() do {} while (0)
+#endif
+
+static inline int cfs_memory_pressure_get_and_set(void)
+{
+ int old = cfs_memory_pressure_get();
+
+ if (!old)
+ cfs_memory_pressure_set();
+ return old;
+}
+
+static inline void cfs_memory_pressure_restore(int old)
+{
+ if (old)
+ cfs_memory_pressure_set();
+ else
+ cfs_memory_pressure_clr();
+ return;
+}
#endif