procfs: treat parked tasks as sleeping for task state

[cascardo/linux.git] / fs / proc / array.c

diff --git a/fs/proc/array.c b/fs/proc/array.c
index fd02a9e..3f57dac 100644 (file)
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -126,6 +126,14 @@ static inline const char *get_task_state(struct task_struct *tsk)
 {
        unsigned int state = (tsk->state | tsk->exit_state) & TASK_REPORT;
 
+       /*
+        * Parked tasks do not run; they sit in __kthread_parkme().
+        * Without this check, we would report them as running, which is
+        * clearly wrong, so we report them as sleeping instead.
+        */
+       if (tsk->state == TASK_PARKED)
+               state = TASK_INTERRUPTIBLE;
+
        BUILD_BUG_ON(1 + ilog2(TASK_REPORT) != ARRAY_SIZE(task_state_array)-1);
 
        return task_state_array[fls(state)];