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sched/fair: Remove cfs_rq::nr_spread_over and cfs_rq::exec_clock
nr_spread_over tracks the number of instances where the difference
between a scheduling entity's virtual runtime and the minimum virtual
runtime in the runqueue exceeds three times the scheduler latency,
indicating significant disparity in task scheduling.
Commit that removed its usage: 5e963f2bd: sched/fair: Commit to EEVDF
cfs_rq->exec_clock was used to account for time spent executing tasks.
Commit that removed its usage: 5d69eca542
sched: Unify runtime
accounting across classes
cfs_rq::nr_spread_over and cfs_rq::exec_clock are not used anymore in
eevdf. Remove them from struct cfs_rq.
Signed-off-by: Chuyi Zhou <zhouchuyi@bytedance.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Chengming Zhou <chengming.zhou@linux.dev>
Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com>
Acked-by: Vishal Chourasia <vishalc@linux.ibm.com>
Link: https://lore.kernel.org/r/20240717143342.593262-1-zhouchuyi@bytedance.com
This commit is contained in:
parent
0ec8d5aed4
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@ -641,8 +641,6 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
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SEQ_printf(m, "\n");
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SEQ_printf(m, "cfs_rq[%d]:\n", cpu);
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#endif
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SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "exec_clock",
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SPLIT_NS(cfs_rq->exec_clock));
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raw_spin_rq_lock_irqsave(rq, flags);
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root = __pick_root_entity(cfs_rq);
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@ -669,8 +667,6 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
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SPLIT_NS(right_vruntime));
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spread = right_vruntime - left_vruntime;
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SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread", SPLIT_NS(spread));
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SEQ_printf(m, " .%-30s: %d\n", "nr_spread_over",
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cfs_rq->nr_spread_over);
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SEQ_printf(m, " .%-30s: %d\n", "nr_running", cfs_rq->nr_running);
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SEQ_printf(m, " .%-30s: %d\n", "h_nr_running", cfs_rq->h_nr_running);
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SEQ_printf(m, " .%-30s: %d\n", "idle_nr_running",
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@ -599,7 +599,6 @@ struct cfs_rq {
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s64 avg_vruntime;
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u64 avg_load;
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u64 exec_clock;
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u64 min_vruntime;
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#ifdef CONFIG_SCHED_CORE
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unsigned int forceidle_seq;
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@ -619,10 +618,6 @@ struct cfs_rq {
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struct sched_entity *curr;
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struct sched_entity *next;
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#ifdef CONFIG_SCHED_DEBUG
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unsigned int nr_spread_over;
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#endif
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#ifdef CONFIG_SMP
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/*
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* CFS load tracking
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@ -1158,7 +1153,6 @@ struct rq {
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/* latency stats */
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struct sched_info rq_sched_info;
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unsigned long long rq_cpu_time;
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/* could above be rq->cfs_rq.exec_clock + rq->rt_rq.rt_runtime ? */
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/* sys_sched_yield() stats */
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unsigned int yld_count;
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