Patch "sched/cputime: Always set tsk->vtime_snap_whence after accounting vtime" has been added to the 4.12-stable tree

This is a note to let you know that I've just added the patch titled

    sched/cputime: Always set tsk->vtime_snap_whence after accounting vtime

to the 4.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
sched-cputime-always-set-tsk-vtime_snap_whence-after-accounting-vtime.patch
and it can be found in the queue-4.12 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Frederic Weisbecker <[email protected]>
Date: Thu, 29 Jun 2017 19:15:08 +0200
Subject: sched/cputime: Always set tsk->vtime_snap_whence after accounting vtime

From: Frederic Weisbecker <[email protected]>

commit 9fa57cf5a5c4aed1e45879b335fe433048709327 upstream.

Even though it doesn't have functional consequences, setting the task's new context state after we actually accounted the pending vtime from the old context state makes more sense from a review perspective.

vtime_user_exit() is the only function that doesn't follow that rule and that can bug the reviewer for a little while until he realizes there is no reason for this special case.

---
 kernel/sched/cputime.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -736,9 +736,9 @@ void vtime_user_enter(struct task_struct
 void vtime_user_exit(struct task_struct *tsk)
 {
 	write_seqcount_begin(&tsk->vtime_seqcount);
-	tsk->vtime_snap_whence = VTIME_SYS;
 	if (vtime_delta(tsk))
 		account_user_time(tsk, get_vtime_delta(tsk));
+	tsk->vtime_snap_whence = VTIME_SYS;
 	write_seqcount_end(&tsk->vtime_seqcount);
 }
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.12/sched-cputime-rename-vtime-fields.patch queue-4.12/vtime-sched-cputime-remove-vtime_account_user.patch queue-4.12/sched-cputime-accumulate-vtime-on-top-of-nsec-clocksource.patch queue-4.12/sched-cputime-move-the-vtime-task-fields-to-their-own-struct.patch queue-4.12/sched-cputime-always-set-tsk-vtime_snap_whence-after-accounting-vtime.patch