From: Kirill Tkhai <tkhai@yandex.ru>
To: linux-kernel@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Kirill Tkhai <ktkhai@parallels.com>
Subject: [PATCH 6/7] sched: Delete rq::skip_clock_update == -1
Date: Sat, 20 Sep 2014 20:51:46 +0400 [thread overview]
Message-ID: <20140920165146.16299.20907.stgit@localhost> (raw)
In-Reply-To: <20140920165116.16299.1381.stgit@localhost>
From: Kirill Tkhai <ktkhai@parallels.com>
Idle class task is always queued, so we can safely remove "-1" case here.
Signed-off-by: Kirill Tkhai <ktkhai@parallels.com>
---
kernel/sched/core.c | 2 +-
kernel/sched/rt.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index a40d6e1..7d0d023 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2812,7 +2812,7 @@ static void __sched __schedule(void)
switch_count = &prev->nvcsw;
}
- if (task_on_rq_queued(prev) || rq->skip_clock_update < 0)
+ if (task_on_rq_queued(prev))
update_rq_clock(rq);
next = pick_next_task(rq, prev);
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index de356b0..828eda0 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -835,7 +835,7 @@ static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun)
* lest wakeup -> unthrottle time accumulate.
*/
if (rt_rq->rt_nr_running && rq->curr == rq->idle)
- rq->skip_clock_update = -1;
+ rq->skip_clock_update = 0;
}
if (rt_rq->rt_time || rt_rq->rt_nr_running)
idle = 0;
next prev parent reply other threads:[~2014-09-20 16:51 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-20 16:51 [PATCH 1/7] sched/fair: Remove duplicate code from can_migrate_task() Kirill Tkhai
2014-09-20 16:51 ` [PATCH 2/7] sched: Fix picking a task switching on other cpu (__ARCH_WANT_UNLOCKED_CTXSW) Kirill Tkhai
2014-09-20 18:33 ` Peter Zijlstra
2014-09-20 18:54 ` Peter Zijlstra
2014-09-20 20:09 ` Kirill Tkhai
2014-09-20 20:19 ` Kirill Tkhai
2014-09-20 19:03 ` Peter Zijlstra
2014-09-20 16:51 ` [PATCH 3/7] sched: Use dl_bw_of() under RCU read lock Kirill Tkhai
2014-09-20 18:57 ` Peter Zijlstra
2014-09-20 19:25 ` Kirill Tkhai
2014-09-20 19:32 ` Peter Zijlstra
2014-09-20 16:51 ` [PATCH 4/7] sched: cleanup: Rename out_unlock to out_free_new_mask Kirill Tkhai
2014-09-20 16:51 ` [PATCH 5/7] sched: Use rq->rd in sched_setaffinity() under RCU read lock Kirill Tkhai
2014-09-20 18:59 ` Peter Zijlstra
2014-09-20 19:05 ` Kirill Tkhai
2014-09-20 19:18 ` Peter Zijlstra
2014-09-20 19:21 ` Kirill Tkhai
2014-09-20 16:51 ` Kirill Tkhai [this message]
2014-09-20 19:01 ` [PATCH 6/7] sched: Delete rq::skip_clock_update == -1 Peter Zijlstra
2014-09-21 4:37 ` Mike Galbraith
2014-09-20 16:51 ` [PATCH 7/7] sched/rt: Use resched_curr() in task_tick_rt() Kirill Tkhai
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