Messages in this thread Patch in this message | | | From | riel@redhat ... | Subject | [RFC PATCH 11/11] nohz,kvm,time: teach account_process_tick about guest time | Date | Wed, 24 Jun 2015 10:58:00 -0400 |
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From: Rik van Riel <riel@redhat.com>
When tick based accounting is run from a remote CPU, it is actually possible to encounter a task with PF_VCPU set. Make sure to account those as guest time.
Signed-off-by: Rik van Riel <riel@redhat.com> --- kernel/sched/cputime.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 593f97b0fe3c..6295679fe5f5 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -488,7 +488,9 @@ void account_process_tick(struct task_struct *p, int user_tick) if (steal_account_process_tick(cpu)) return; - if (user_tick) + if (p->flags & PF_VCPU) + account_guest_time(p, cputime_one_jiffy, one_jiffy_scaled); + else if (user_tick) account_user_time(p, cputime_one_jiffy, one_jiffy_scaled); else if ((p != rq->idle) || (irq_count() != HARDIRQ_OFFSET)) account_system_time(p, HARDIRQ_OFFSET, cputime_one_jiffy, -- 2.1.0
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