Messages in this thread Patch in this message | | | From | "Joel Fernandes (Google)" <> | Subject | [PATCH 02/10] sched/core: Clear prev->dl_server in CFS pick fast path | Date | Fri, 16 Feb 2024 13:31:00 -0500 |
| |
From: Youssef Esmat <youssefesmat@google.com>
In case the previous pick was a DL server pick, ->dl_server might be set. Clear it in the fast path as well.
Signed-off-by: Youssef Esmat <youssefesmat@google.com> Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org> --- kernel/sched/core.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 7f3a2596c1ed..63f41453b79e 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6036,6 +6036,13 @@ __pick_next_task(struct rq *rq, struct task_struct *prev, struct rq_flags *rf) p = pick_next_task_idle(rq); } + /* + * This is a normal CFS pick, but the previous could be a DL pick. + * Clear it as previous is no longer picked. + */ + if (prev->dl_server) + prev->dl_server = NULL; + /* * This is the fast path; it cannot be a DL server pick; * therefore even if @p == @prev, ->dl_server must be NULL. -- 2.34.1
| |