From: Hao Xu <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>,
Pavel Begunkov <[email protected]>,
Ingo Molnar <[email protected]>,
Wanpeng Li <[email protected]>
Subject: [PATCH 08/19] io-wq: add IO_WORKER_F_SUBMIT and its friends
Date: Fri, 19 Aug 2022 23:27:27 +0800 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
From: Hao Xu <[email protected]>
Add IO_WORKER_F_SUBMIT to indicate that a uringlet worker is submitting
sqes and thus we should do some scheduling when it blocks.
Signed-off-by: Hao Xu <[email protected]>
---
io_uring/io-wq.c | 20 ++++++++++++++++++++
io_uring/io-wq.h | 1 +
2 files changed, 21 insertions(+)
diff --git a/io_uring/io-wq.c b/io_uring/io-wq.c
index 55f1063f24c7..7e58bb5857ee 100644
--- a/io_uring/io-wq.c
+++ b/io_uring/io-wq.c
@@ -393,6 +393,21 @@ static inline bool io_wq_is_uringlet(struct io_wq *wq)
return wq->private;
}
+static inline void io_worker_set_submit(struct io_worker *worker)
+{
+ worker->flags |= IO_WORKER_F_SUBMIT;
+}
+
+static inline void io_worker_clean_submit(struct io_worker *worker)
+{
+ worker->flags &= ~IO_WORKER_F_SUBMIT;
+}
+
+static inline bool io_worker_test_submit(struct io_worker *worker)
+{
+ return worker->flags & IO_WORKER_F_SUBMIT;
+}
+
static void io_wqe_dec_running(struct io_worker *worker)
{
struct io_wqe_acct *acct = io_wqe_get_acct(worker);
@@ -408,6 +423,9 @@ static void io_wqe_dec_running(struct io_worker *worker)
if (io_wq_is_uringlet(wq)) {
bool activated;
+ if (!io_worker_test_submit(worker))
+ return;
+
raw_spin_lock(&wqe->lock);
rcu_read_lock();
activated = io_wqe_activate_free_worker(wqe, acct);
@@ -688,7 +706,9 @@ static void io_wqe_worker_let(struct io_worker *worker)
do {
enum io_uringlet_state submit_state;
+ io_worker_set_submit(worker);
submit_state = wq->do_work(wq->private);
+ io_worker_clean_submit(worker);
if (submit_state == IO_URINGLET_SCHEDULED) {
empty_count = 0;
break;
diff --git a/io_uring/io-wq.h b/io_uring/io-wq.h
index 504a8a8e3fd8..1485e9009784 100644
--- a/io_uring/io-wq.h
+++ b/io_uring/io-wq.h
@@ -33,6 +33,7 @@ enum {
IO_WORKER_F_FREE = 4, /* worker on free list */
IO_WORKER_F_BOUND = 8, /* is doing bounded work */
IO_WORKER_F_SCHEDULED = 16, /* worker had been scheduled out before */
+ IO_WORKER_F_SUBMIT = 32, /* uringlet worker is submitting sqes */
};
typedef struct io_wq_work *(free_work_fn)(struct io_wq_work *);
--
2.25.1
next prev parent reply other threads:[~2022-08-19 15:29 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-19 15:27 [RFC 00/19] uringlet Hao Xu
2022-08-19 15:27 ` [PATCH 01/19] io_uring: change return value of create_io_worker() and io_wqe_create_worker() Hao Xu
2022-08-19 15:27 ` [PATCH 02/19] io_uring: add IORING_SETUP_URINGLET Hao Xu
2022-08-19 15:27 ` [PATCH 03/19] io_uring: make worker pool per ctx for uringlet mode Hao Xu
2022-08-19 15:27 ` [PATCH 04/19] io-wq: split io_wqe_worker() to io_wqe_worker_normal() and io_wqe_worker_let() Hao Xu
2022-08-19 15:27 ` [PATCH 05/19] io_uring: add io_uringler_offload() for uringlet mode Hao Xu
2022-08-19 15:27 ` [PATCH 06/19] io-wq: change the io-worker scheduling logic Hao Xu
2022-08-19 15:27 ` [PATCH 07/19] io-wq: move worker state flags to io-wq.h Hao Xu
2022-08-19 15:27 ` Hao Xu [this message]
2022-08-19 15:27 ` [PATCH 09/19] io-wq: add IO_WORKER_F_SCHEDULED and its friends Hao Xu
2022-08-19 15:27 ` [PATCH 10/19] io_uring: add io_submit_sqes_let() Hao Xu
2022-08-19 15:27 ` [PATCH 11/19] io_uring: don't allocate io-wq for a worker in uringlet mode Hao Xu
2022-08-19 15:27 ` [PATCH 12/19] io_uring: add uringlet worker cancellation function Hao Xu
2022-08-19 15:27 ` [PATCH 13/19] io-wq: add wq->owner for uringlet mode Hao Xu
2022-08-19 15:27 ` [PATCH 14/19] io_uring: modify issue_flags " Hao Xu
2022-08-19 15:27 ` [PATCH 15/19] io_uring: don't use inline completion cache if scheduled Hao Xu
2022-08-19 15:27 ` [PATCH 16/19] io_uring: release ctx->let when a ring exits Hao Xu
2022-08-19 15:27 ` [PATCH 17/19] io_uring: disable task plug for now Hao Xu
2022-08-19 15:27 ` [PATCH 18/19] io-wq: only do io_uringlet_end() at the first schedule time Hao Xu
2022-08-19 15:27 ` [PATCH 19/19] io_uring: wire up uringlet Hao Xu
2022-08-25 13:03 ` [RFC 00/19] uringlet Hao Xu
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