Messages in this thread Patch in this message | | | From | Alexey Dobriyan <> | Subject | [PATCH 4/4] sched: make multiple runqueue task counters 32-bit | Date | Thu, 22 Apr 2021 23:02:28 +0300 |
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Make
struct dl_rq::dl_nr_migratory struct dl_rq::dl_nr_running
struct rt_rq::rt_nr_boosted struct rt_rq::rt_nr_migratory struct rt_rq::rt_nr_total
struct rq::nr_uninterruptible
32-bit.
If total number of tasks can't exceed 2**32 (and less due to futex pid limits), then per-runqueue counters can't as well.
This patchset has been sponsored by REX Prefix Eradication Society.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> --- kernel/sched/loadavg.c | 2 +- kernel/sched/sched.h | 12 ++++++------ 2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/kernel/sched/loadavg.c b/kernel/sched/loadavg.c index d2a655643a02..aef8072cfebe 100644 --- a/kernel/sched/loadavg.c +++ b/kernel/sched/loadavg.c @@ -81,7 +81,7 @@ long calc_load_fold_active(struct rq *this_rq, long adjust) long nr_active, delta = 0; nr_active = this_rq->nr_running - adjust; - nr_active += (long)this_rq->nr_uninterruptible; + nr_active += (int)this_rq->nr_uninterruptible; if (nr_active != this_rq->calc_load_active) { delta = nr_active - this_rq->calc_load_active; diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 10a1522b1e30..730c81a54ed1 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -622,8 +622,8 @@ struct rt_rq { } highest_prio; #endif #ifdef CONFIG_SMP - unsigned long rt_nr_migratory; - unsigned long rt_nr_total; + unsigned int rt_nr_migratory; + unsigned int rt_nr_total; int overloaded; struct plist_head pushable_tasks; @@ -637,7 +637,7 @@ struct rt_rq { raw_spinlock_t rt_runtime_lock; #ifdef CONFIG_RT_GROUP_SCHED - unsigned long rt_nr_boosted; + unsigned int rt_nr_boosted; struct rq *rq; struct task_group *tg; @@ -654,7 +654,7 @@ struct dl_rq { /* runqueue is an rbtree, ordered by deadline */ struct rb_root_cached root; - unsigned long dl_nr_running; + unsigned int dl_nr_running; #ifdef CONFIG_SMP /* @@ -668,7 +668,7 @@ struct dl_rq { u64 next; } earliest_dl; - unsigned long dl_nr_migratory; + unsigned int dl_nr_migratory; int overloaded; /* @@ -946,7 +946,7 @@ struct rq { * one CPU and if it got migrated afterwards it may decrease * it on another CPU. Always updated under the runqueue lock: */ - unsigned long nr_uninterruptible; + unsigned int nr_uninterruptible; struct task_struct __rcu *curr; struct task_struct *idle; -- 2.30.2
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