diff mbox series

[v11,7/8] sched/core: Support latency priority with sched core

Message ID 20230223191041.577305-8-vincent.guittot@linaro.org
State New
Headers
Series Add latency priority for CFS class |

Commit Message

Vincent Guittot Feb. 23, 2023, 7:10 p.m. UTC 
  Take into account wakeup_latency_gran() when ordering the cfs threads.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
---
 kernel/sched/fair.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index dc7570f43ebe..125a6ff53378 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -11949,6 +11949,9 @@  bool cfs_prio_less(const struct task_struct *a, const struct task_struct *b,
 	delta = (s64)(sea->vruntime - seb->vruntime) +
 		(s64)(cfs_rqb->min_vruntime_fi - cfs_rqa->min_vruntime_fi);
 
+	/* Take into account latency offset */
+	delta -= wakeup_latency_gran(sea, seb);
+
 	return delta > 0;
 }
 #else