diff options
| author | Pavankumar Kondeti <pkondeti@codeaurora.org> | 2016-03-04 13:36:43 +0530 |
|---|---|---|
| committer | Joonwoo Park <joonwoop@codeaurora.org> | 2016-06-23 14:03:24 -0700 |
| commit | a68e39b7fd87886ebbf65cc0da4f5fb010a65f58 (patch) | |
| tree | d547ad9d8c8793fa658cd3d55d95f34be4ab2ff3 /include/linux | |
| parent | 7d1fabcef82e138c38c84144457a5e962381b0b1 (diff) | |
sched: break the forever prev_cpu selection preference
The select_best_cpu() algorithm selects the previous CPU as the target
CPU if the task did not sleep for more than 2 msec (controlled by
/proc/sys/kernel/sched_select_prev_cpu_us). The complete CPU search is
not done for a long time for tasks which sleeps for a short duration
in between the long execution slices. Enforce a 100 msec threshold since
the last selection time to run the complete algorithm.
CRs-Fixed: 984463
Change-Id: I329eecc6bae8f130cd5598f6cee8ca5a01391cca
[joonwoop@codeaurora.org: fixed conflict in bias_to_prev_cpu() and sched.h
where CONFIG_SCHED_QHMP used to be.]
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 61a5c00e66cd..06dd540192c7 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1482,6 +1482,7 @@ struct task_struct { u32 init_load_pct; u64 last_wake_ts; u64 last_switch_out_ts; + u64 last_cpu_selected_ts; struct related_thread_group *grp; struct list_head grp_list; u64 cpu_cycles; |