[PATCH] sched: tweak comment for sched_info_depart

["Michael S. Tsirkin" <mst@redhat.com>]

sched_info_depart seems to be only called from sched_info_switch,
so only on involuntary task switch.
Tweak comment to match.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 kernel/sched/stats.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/sched/stats.h b/kernel/sched/stats.h
index 891ccab..2e63fc7 100644
--- a/kernel/sched/stats.h
+++ b/kernel/sched/stats.h
@@ -115,8 +115,9 @@ static inline void sched_info_queued(struct rq *rq, struct task_struct *t)
 }
 
 /*
- * Called when a process ceases being the active-running process, either
- * voluntarily or involuntarily.  Now we can calculate how long we ran.
+ * Called when a process ceases being the active-running process involuntarily
+ * due, typically, to expiring its time slice (this may also be called when
+ * switching to the idle task).  Now we can calculate how long we ran.
  * Also, if the process is still in the TASK_RUNNING state, call
  * sched_info_queued() to mark that it has now again started waiting on
  * the runqueue.
-- 
MST