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| author | Swapnil Sapkal <swapnil.sapkal@amd.com> | 2024-12-20 06:32:21 +0000 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2024-12-20 15:31:17 +0100 |
| commit | 3b2a793ea70fd14136b442df31e53935e8095034 (patch) | |
| tree | 6bcad12037293191f246833fabdb909253d95aa1 /kernel/sched/stats.c | |
| parent | c3856c9ce6b8903909b61e8d2985a3c7ec7a78e8 (diff) | |
| download | linux-next-3b2a793ea70fd14136b442df31e53935e8095034.tar.gz linux-next-3b2a793ea70fd14136b442df31e53935e8095034.zip | |
sched: Report the different kinds of imbalances in /proc/schedstat
In /proc/schedstat, lb_imbalance reports the sum of imbalances
discovered in sched domains with each call to sched_balance_rq(), which is
not very useful because lb_imbalance does not mention whether the imbalance
is due to load, utilization, nr_tasks or misfit_tasks. Remove this field
from /proc/schedstat.
Currently there is no field in /proc/schedstat to report different types
of imbalances. Introduce new fields in /proc/schedstat to report the
total imbalances in load, utilization, nr_tasks or misfit_tasks.
Added fields to /proc/schedstat:
- lb_imbalance_load: Total imbalance due to load.
- lb_imbalance_util: Total imbalance due to utilization.
- lb_imbalance_task: Total imbalance due to number of tasks.
- lb_imbalance_misfit: Total imbalance due to misfit tasks.
Signed-off-by: Swapnil Sapkal <swapnil.sapkal@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Link: https://lore.kernel.org/r/20241220063224.17767-4-swapnil.sapkal@amd.com
Diffstat (limited to 'kernel/sched/stats.c')
| -rw-r--r-- | kernel/sched/stats.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/sched/stats.c b/kernel/sched/stats.c index eb0cdcd4d921..802bd9398a2e 100644 --- a/kernel/sched/stats.c +++ b/kernel/sched/stats.c @@ -141,11 +141,14 @@ static int show_schedstat(struct seq_file *seq, void *v) seq_printf(seq, "domain%d %*pb", dcount++, cpumask_pr_args(sched_domain_span(sd))); for (itype = 0; itype < CPU_MAX_IDLE_TYPES; itype++) { - seq_printf(seq, " %u %u %u %u %u %u %u %u", + seq_printf(seq, " %u %u %u %u %u %u %u %u %u %u %u", sd->lb_count[itype], sd->lb_balanced[itype], sd->lb_failed[itype], - sd->lb_imbalance[itype], + sd->lb_imbalance_load[itype], + sd->lb_imbalance_util[itype], + sd->lb_imbalance_task[itype], + sd->lb_imbalance_misfit[itype], sd->lb_gained[itype], sd->lb_hot_gained[itype], sd->lb_nobusyq[itype], |