Add macros to replace direct uses of TASK_ flags
Matthew Wilcox [Thu, 6 Dec 2007 15:55:25 +0000 (10:55 -0500)]
With the changes to support TASK_KILLABLE, ->state becomes a bitmask, and
moving these tests to convenience macros will fix all the users.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>

include/linux/sched.h

index ac3d496..69233c7 100644 (file)
@@ -178,6 +178,22 @@ print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
 /* in tsk->state again */
 #define TASK_DEAD              64
 
+/* Convenience macros for the sake of wake_up */
+#define TASK_NORMAL            (TASK_INTERRUPTIBLE | TASK_UNINTERRUPTIBLE)
+#define TASK_ALL               (TASK_NORMAL | TASK_STOPPED | TASK_TRACED)
+
+/* get_task_state() */
+#define TASK_REPORT            (TASK_RUNNING | TASK_INTERRUPTIBLE | \
+                                TASK_UNINTERRUPTIBLE | TASK_STOPPED | \
+                                TASK_TRACED)
+
+#define task_is_traced(task)   ((task->state & TASK_TRACED) != 0)
+#define task_is_stopped(task)  ((task->state & TASK_STOPPED) != 0)
+#define task_is_stopped_or_traced(task)        \
+                       ((task->state & (TASK_STOPPED | TASK_TRACED)) != 0)
+#define task_contributes_to_load(task) \
+                               ((task->state & TASK_UNINTERRUPTIBLE) != 0)
+
 #define __set_task_state(tsk, state_value)             \
        do { (tsk)->state = (state_value); } while (0)
 #define set_task_state(tsk, state_value)               \