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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2015-11-04 20:17:10 +0300 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2016-03-02 18:43:04 +0300 |
| commit | 01d36d0ac390895e719d0dd8ab91ebbbf506d28e (patch) | |
| tree | 7b6b8d5b5bc7828db60cdbf9215565a32d1709c1 /kernel/sched/sched.h | |
| parent | 555e0c1ef7ff49ee5ac3a1eb12de4a2e4722f63d (diff) | |
| download | linux-01d36d0ac390895e719d0dd8ab91ebbbf506d28e.tar.xz | |
sched: Account rr tasks
In order to evaluate the scheduler tick dependency without probing
context switches, we need to know how much SCHED_RR and SCHED_FIFO tasks
are enqueued as those policies don't have the same preemption
requirements.
To prepare for that, let's account SCHED_RR tasks, we'll be able to
deduce SCHED_FIFO tasks as well from it and the total RT tasks in the
runqueue.
Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 10f16374df7f..f0abfce14044 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -450,6 +450,7 @@ static inline int rt_bandwidth_enabled(void) struct rt_rq { struct rt_prio_array active; unsigned int rt_nr_running; + unsigned int rr_nr_running; #if defined CONFIG_SMP || defined CONFIG_RT_GROUP_SCHED struct { int curr; /* highest queued rt task prio */ |