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-rw-r--r--include/linux/sched.h22
1 files changed, 17 insertions, 5 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index afe6c61f13e..c3ba31f210a 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -107,14 +107,26 @@ extern unsigned long nr_iowait(void);
#include <asm/processor.h>
+/*
+ * Task state bitmask. NOTE! These bits are also
+ * encoded in fs/proc/array.c: get_task_state().
+ *
+ * We have two separate sets of flags: task->state
+ * is about runnability, while task->exit_state are
+ * about the task exiting. Confusing, but this way
+ * modifying one set can't modify the other one by
+ * mistake.
+ */
#define TASK_RUNNING 0
#define TASK_INTERRUPTIBLE 1
#define TASK_UNINTERRUPTIBLE 2
-#define TASK_NONINTERACTIVE 4
-#define TASK_STOPPED 8
-#define TASK_TRACED 16
-#define EXIT_ZOMBIE 32
-#define EXIT_DEAD 64
+#define TASK_STOPPED 4
+#define TASK_TRACED 8
+/* in tsk->exit_state */
+#define EXIT_ZOMBIE 16
+#define EXIT_DEAD 32
+/* in tsk->state again */
+#define TASK_NONINTERACTIVE 64
#define __set_task_state(tsk, state_value) \
do { (tsk)->state = (state_value); } while (0)