[PATCH 1/6] sched_ext: Introduce SCX_OPS_NODE_BUILTIN_IDLE
From: Andrea Righi
Date: Mon Dec 09 2024 - 18:03:06 EST
Add a flag (SCX_OPS_NODE_BUILTIN_IDLE) to toggle between a global flat
idle cpumask and multiple per-node CPU masks.
Signed-off-by: Andrea Righi <arighi@xxxxxxxxxx>
---
kernel/sched/ext.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index 71342f3719c1..3d13e7975abd 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -122,6 +122,12 @@ enum scx_ops_flags {
*/
SCX_OPS_SWITCH_PARTIAL = 1LLU << 3,
+ /*
+ * If set, enable per-node idle cpumasks. If clear, use a single global
+ * flat idle cpumask.
+ */
+ SCX_OPS_BUILTIN_IDLE_PER_NODE = 1LLU << 4,
+
/*
* CPU cgroup support flags
*/
@@ -131,6 +137,7 @@ enum scx_ops_flags {
SCX_OPS_ENQ_LAST |
SCX_OPS_ENQ_EXITING |
SCX_OPS_SWITCH_PARTIAL |
+ SCX_OPS_BUILTIN_IDLE_PER_NODE |
SCX_OPS_HAS_CGROUP_WEIGHT,
};
--
2.47.1