The patch titled
sched-improve-migration-accuracy tidy
has been added to the -mm tree. Its filename is
sched-improve-migration-accuracy-tidy.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: sched-improve-migration-accuracy tidy
From: "Chen, Kenneth W" <kenneth.w.chen@xxxxxxxxx>
While we at it, let's clean up this hunk. task_hot is evaluated twice in
the more common case of nr_balance_failed <= cache_nice_tries. We should
only test/increment relevant stats for forced migration.
Signed-off-by: Ken Chen <kenneth.w.chen@xxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Ken Chen <kenneth.w.chen@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/sched.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)
diff -puN kernel/sched.c~sched-improve-migration-accuracy-tidy kernel/sched.c
--- a/kernel/sched.c~sched-improve-migration-accuracy-tidy
+++ a/kernel/sched.c
@@ -2106,8 +2106,13 @@ int can_migrate_task(struct task_struct
* 2) too many balance attempts have failed.
*/
- if (sd->nr_balance_failed > sd->cache_nice_tries)
+ if (sd->nr_balance_failed > sd->cache_nice_tries) {
+#ifdef CONFIG_SCHEDSTATS
+ if (task_hot(p, rq->most_recent_timestamp, sd))
+ schedstat_inc(sd, lb_hot_gained[idle]);
+#endif
return 1;
+ }
if (task_hot(p, rq->most_recent_timestamp, sd))
return 0;
@@ -2207,11 +2212,6 @@ skip_queue:
goto skip_bitmap;
}
-#ifdef CONFIG_SCHEDSTATS
- if (task_hot(tmp, busiest->most_recent_timestamp, sd))
- schedstat_inc(sd, lb_hot_gained[idle]);
-#endif
-
pull_task(busiest, array, tmp, this_rq, dst_array, this_cpu);
pulled++;
rem_load_move -= tmp->load_weight;
_
Patches currently in -mm which might be from kenneth.w.chen@xxxxxxxxx are
__unmap_hugepage_range-add-comment.patch
shared-page-table-for-hugetlb-page-v4.patch
htlb-forget-rss-with-pt-sharing.patch
sched-avoid-taking-rq-lock-in-wake_priority_sleeper.patch
sched-remove-staggering-of-load-balancing.patch
sched-disable-interrupts-for-locking-in-load_balance.patch
sched-extract-load-calculation-from-rebalance_tick.patch
sched-move-idle-status-calculation-into-rebalance_tick.patch
sched-use-softirq-for-load-balancing.patch
sched-call-tasklet-less-frequently.patch
sched-add-option-to-serialize-load-balancing.patch
sched-improve-migration-accuracy.patch
sched-improve-migration-accuracy-tidy.patch
mm-only-sched-add-a-few-scheduler-event-counters.patch
sched-optimize-activate_task-for-rt-task.patch
-
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