diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2024-05-27 14:06:50 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2024-07-29 12:22:36 +0200 |
| commit | 557a6bfc662c4d560f909b78adb1270c9862efa8 (patch) | |
| tree | 9a562bf3a4404f4583b8ee3f3755c0fd102f8cd7 /kernel/sched/sched.h | |
| parent | a741b82423f41501e301eb6f9820b45ca202e877 (diff) | |
sched/fair: Add trivial fair server
Use deadline servers to service fair tasks.
This patch adds a fair_server deadline entity which acts as a container
for fair entities and can be used to fix starvation when higher priority
(wrt fair) tasks are monopolizing CPU(s).
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Juri Lelli <juri.lelli@redhat.com>
Link: https://lore.kernel.org/r/b6b0bcefaf25391bcf5b6ecdb9f1218de402d42e.1716811044.git.bristot@kernel.org
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 8a071022bdec..7416bcd2a549 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -363,6 +363,8 @@ extern void dl_server_init(struct sched_dl_entity *dl_se, struct rq *rq, dl_server_has_tasks_f has_tasks, dl_server_pick_f pick); +extern void fair_server_init(struct rq *rq); + #ifdef CONFIG_CGROUP_SCHED extern struct list_head task_groups; @@ -1039,6 +1041,8 @@ struct rq { struct rt_rq rt; struct dl_rq dl; + struct sched_dl_entity fair_server; + #ifdef CONFIG_FAIR_GROUP_SCHED /* list of leaf cfs_rq on this CPU: */ struct list_head leaf_cfs_rq_list; |