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-rw-r--r--include/linux/sched/ext.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/sched/ext.h b/include/linux/sched/ext.h
index 2129e18ada58..20b2343aa344 100644
--- a/include/linux/sched/ext.h
+++ b/include/linux/sched/ext.h
@@ -207,6 +207,15 @@ struct sched_ext_entity {
u64 core_sched_at; /* see scx_prio_less() */
#endif
+ /*
+ * Unique non-zero task ID assigned at fork. Persists across exec and
+ * is never reused. Lets BPF schedulers identify tasks without storing
+ * kernel pointers - arena-backed schedulers being one example. See
+ * scx_bpf_tid_to_task().
+ */
+ u64 tid;
+ struct rhash_head tid_hash_node; /* see SCX_OPS_TID_TO_TASK */
+
/* BPF scheduler modifiable fields */
/*