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| author | Peter Zijlstra (Intel) <peterz@infradead.org> | 2020-01-11 04:53:39 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-01-28 21:36:44 +0100 |
| commit | ebc0f83c78a2d26384401ecf2d2fa48063c0ee27 (patch) | |
| tree | 5549117417df46bf2e73150903f3856246eff870 /kernel/sched/core.c | |
| parent | 488603b815a7514c7009e6fc339d74ed4a30f343 (diff) | |
| download | linux-ebc0f83c78a2d26384401ecf2d2fa48063c0ee27.tar.bz2 | |
timers/nohz: Update NOHZ load in remote tick
The way loadavg is tracked during nohz only pays attention to the load
upon entering nohz. This can be particularly noticeable if full nohz is
entered while non-idle, and then the cpu goes idle and stays that way for
a long time.
Use the remote tick to ensure that full nohz cpus report their deltas
within a reasonable time.
[ swood: Added changelog and removed recheck of stopped tick. ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Scott Wood <swood@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/1578736419-14628-3-git-send-email-swood@redhat.com
Diffstat (limited to 'kernel/sched/core.c')
| -rw-r--r-- | kernel/sched/core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index cf8b33dc4513..4ff03c27779e 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3677,6 +3677,7 @@ static void sched_tick_remote(struct work_struct *work) if (cpu_is_offline(cpu)) goto out_unlock; + curr = rq->curr; update_rq_clock(rq); if (!is_idle_task(curr)) { @@ -3689,10 +3690,11 @@ static void sched_tick_remote(struct work_struct *work) } curr->sched_class->task_tick(rq, curr, 0); + calc_load_nohz_remote(rq); out_unlock: rq_unlock_irq(rq, &rf); - out_requeue: + /* * Run the remote tick once per second (1Hz). This arbitrary * frequency is large enough to avoid overload but short enough |