diff options
| author | Morten Rasmussen <Morten.Rasmussen@arm.com> | 2012-09-14 14:38:10 +0100 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2012-10-03 16:28:52 +0530 |
| commit | 45af042f60fa737a9448932e4198a7426a7b55db (patch) | |
| tree | 79a1a7511cc4e36ffc72defdeda69605b02ab18f /kernel/sched/sched.h | |
| parent | 9be8d471911354d3433eb6ffc77bc0819625705c (diff) | |
sched: Forced task migration on heterogeneous systems
This patch introduces forced task migration for moving suitable
currently running tasks between hmp_domains. Task behaviour is likely
to change over time. Tasks running in a less capable hmp_domain may
change to become more demanding and should therefore be migrated up.
They are unlikely go through the select_task_rq_fair() path anytime
soon and therefore need special attention.
This patch introduces a period check (SCHED_TICK) of the currently
running task on all runqueues and sets up a forced migration using
stop_machine_no_wait() if the task needs to be migrated.
Ideally, this should not be implemented by polling all runqueues.
Signed-off-by: Morten Rasmussen <Morten.Rasmussen@arm.com>
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 7432b9cc3e8..1f7f16cd205 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -425,6 +425,9 @@ struct rq { int active_balance; int push_cpu; struct cpu_stop_work active_balance_work; +#ifdef CONFIG_SCHED_HMP + struct task_struct *migrate_task; +#endif /* cpu of this runqueue: */ int cpu; int online; |