kern/thread: add round tracking for time-sharing threads

Now that there is per-thread work accounting, work scaling can occur less
frequently. Tracking rounds allows directly reusing the work of a thread
on insertion or removal.

1 files changed, 1 insertions, 0 deletions

diff --git a/kern/thread.h b/kern/thread.h
index cda20d0d..1a04716a 100644
--- a/kern/thread.h
+++ b/kern/thread.h
@@ -100,6 +100,7 @@ struct thread_ts_runq;
 struct thread_ts_ctx {
     struct list node;
     struct thread_ts_runq *ts_runq;
+    unsigned long round;
     unsigned short weight;
     unsigned short work;
 };