[PATCH] sched/core: Refactor task_flags check for worker sleeping

From: Wang Jinchao
Date: Sun Aug 20 2023 - 08:53:32 EST


Simplify the conditional logic for checking worker flags
by splitting the original compound `if` statement into
separate `if` and `else if` clauses. This modification not
only retains the previous functionality but also reduces a
single `if` check, improving code clarity and potentially
enhancing performance.

Signed-off-by: Wang Jinchao <wangjinchao@xxxxxxxxxxx>
---
kernel/sched/core.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index c52c2eba7c73..9621ee979b0b 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6745,12 +6745,10 @@ static inline void sched_submit_work(struct task_struct *tsk)
* If a worker goes to sleep, notify and ask workqueue whether it
* wants to wake up a task to maintain concurrency.
*/
- if (task_flags & (PF_WQ_WORKER | PF_IO_WORKER)) {
- if (task_flags & PF_WQ_WORKER)
- wq_worker_sleeping(tsk);
- else
- io_wq_worker_sleeping(tsk);
- }
+ if (task_flags & PF_WQ_WORKER)
+ wq_worker_sleeping(tsk);
+ else if (task_flags & PF_IO_WORKER)
+ io_wq_worker_sleeping(tsk);

/*
* spinlock and rwlock must not flush block requests. This will
--
2.40.0