Split io_cqring_fill_event() into a couple of more targeted functions.
The first on is io_fill_cqe_aux() for completions that are not
associated with request completions and doing the ->cq_extra accounting.
Examples are additional CQEs from multishot poll and rsrc notifications.
The second is io_fill_cqe_req(), should be called when it's a normal
request completion. Nothing more to it at the moment, will be used in
later patches.
The last one is inlined __io_fill_cqe() for a finer grained control,
should be used with caution and in hottest places.
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
fs/io_uring.c | 58 ++++++++++++++++++++++++++-------------------------
1 file changed, 30 insertions(+), 28 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index e6ccdae189b0..1703130ae8df 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1078,8 +1078,8 @@ static void io_uring_try_cancel_requests(struct io_ring_ctx *ctx,
bool cancel_all);
static void io_uring_cancel_generic(bool cancel_all, struct io_sq_data *sqd);
-static bool io_cqring_fill_event(struct io_ring_ctx *ctx, u64 user_data,
- long res, unsigned int cflags);
+static void io_fill_cqe_req(struct io_kiocb *req, long res, unsigned int cflags);
+
static void io_put_req(struct io_kiocb *req);
static void io_put_req_deferred(struct io_kiocb *req);
static void io_dismantle_req(struct io_kiocb *req);
@@ -1491,7 +1491,7 @@ static void io_kill_timeout(struct io_kiocb *req, int status)
atomic_set(&req->ctx->cq_timeouts,
atomic_read(&req->ctx->cq_timeouts) + 1);
list_del_init(&req->timeout.list);
- io_cqring_fill_event(req->ctx, req->user_data, status, 0);
+ io_fill_cqe_req(req, status, 0);
io_put_req_deferred(req);
}
}
@@ -1760,8 +1760,8 @@ static bool io_cqring_event_overflow(struct io_ring_ctx *ctx, u64 user_data,
return true;
}
-static inline bool __io_cqring_fill_event(struct io_ring_ctx *ctx, u64 user_data,
- long res, unsigned int cflags)
+static inline bool __io_fill_cqe(struct io_ring_ctx *ctx, u64 user_data,
+ long res, unsigned int cflags)
{
struct io_uring_cqe *cqe;
@@ -1782,11 +1782,17 @@ static inline bool __io_cqring_fill_event(struct io_ring_ctx *ctx, u64 user_data
return io_cqring_event_overflow(ctx, user_data, res, cflags);
}
-/* not as hot to bloat with inlining */
-static noinline bool io_cqring_fill_event(struct io_ring_ctx *ctx, u64 user_data,
- long res, unsigned int cflags)
+static noinline void io_fill_cqe_req(struct io_kiocb *req, long res,
+ unsigned int cflags)
+{
+ __io_fill_cqe(req->ctx, req->user_data, res, cflags);
+}
+
+static noinline bool io_fill_cqe_aux(struct io_ring_ctx *ctx, u64 user_data,
+ long res, unsigned int cflags)
{
- return __io_cqring_fill_event(ctx, user_data, res, cflags);
+ ctx->cq_extra++;
+ return __io_fill_cqe(ctx, user_data, res, cflags);
}
static void io_req_complete_post(struct io_kiocb *req, long res,
@@ -1795,7 +1801,7 @@ static void io_req_complete_post(struct io_kiocb *req, long res,
struct io_ring_ctx *ctx = req->ctx;
spin_lock(&ctx->completion_lock);
- __io_cqring_fill_event(ctx, req->user_data, res, cflags);
+ __io_fill_cqe(ctx, req->user_data, res, cflags);
/*
* If we're the last reference to this request, add to our locked
* free_list cache.
@@ -2021,8 +2027,7 @@ static bool io_kill_linked_timeout(struct io_kiocb *req)
link->timeout.head = NULL;
if (hrtimer_try_to_cancel(&io->timer) != -1) {
list_del(&link->timeout.list);
- io_cqring_fill_event(link->ctx, link->user_data,
- -ECANCELED, 0);
+ io_fill_cqe_req(link, -ECANCELED, 0);
io_put_req_deferred(link);
return true;
}
@@ -2046,7 +2051,7 @@ static void io_fail_links(struct io_kiocb *req)
link->link = NULL;
trace_io_uring_fail_link(req, link);
- io_cqring_fill_event(link->ctx, link->user_data, res, 0);
+ io_fill_cqe_req(link, res, 0);
io_put_req_deferred(link);
link = nxt;
}
@@ -2063,8 +2068,7 @@ static bool io_disarm_next(struct io_kiocb *req)
req->flags &= ~REQ_F_ARM_LTIMEOUT;
if (link && link->opcode == IORING_OP_LINK_TIMEOUT) {
io_remove_next_linked(req);
- io_cqring_fill_event(link->ctx, link->user_data,
- -ECANCELED, 0);
+ io_fill_cqe_req(link, -ECANCELED, 0);
io_put_req_deferred(link);
posted = true;
}
@@ -2335,8 +2339,8 @@ static void __io_submit_flush_completions(struct io_ring_ctx *ctx)
for (i = 0; i < nr; i++) {
struct io_kiocb *req = state->compl_reqs[i];
- __io_cqring_fill_event(ctx, req->user_data, req->result,
- req->compl.cflags);
+ __io_fill_cqe(ctx, req->user_data, req->result,
+ req->compl.cflags);
}
io_commit_cqring(ctx);
spin_unlock(&ctx->completion_lock);
@@ -2454,8 +2458,8 @@ static void io_iopoll_complete(struct io_ring_ctx *ctx, unsigned int *nr_events,
continue;
}
- __io_cqring_fill_event(ctx, req->user_data, req->result,
- io_put_rw_kbuf(req));
+ __io_fill_cqe(ctx, req->user_data, req->result,
+ io_put_rw_kbuf(req));
(*nr_events)++;
if (req_ref_put_and_test(req))
@@ -5293,13 +5297,12 @@ static bool __io_poll_complete(struct io_kiocb *req, __poll_t mask)
}
if (req->poll.events & EPOLLONESHOT)
flags = 0;
- if (!io_cqring_fill_event(ctx, req->user_data, error, flags)) {
+ if (!(flags & IORING_CQE_F_MORE)) {
+ io_fill_cqe_req(req, error, flags);
+ } else if (!io_fill_cqe_aux(ctx, req->user_data, error, flags)) {
req->poll.done = true;
flags = 0;
}
- if (flags & IORING_CQE_F_MORE)
- ctx->cq_extra++;
-
return !(flags & IORING_CQE_F_MORE);
}
@@ -5627,9 +5630,9 @@ static bool io_poll_remove_one(struct io_kiocb *req)
do_complete = __io_poll_remove_one(req, io_poll_get_single(req), true);
if (do_complete) {
- io_cqring_fill_event(req->ctx, req->user_data, -ECANCELED, 0);
- io_commit_cqring(req->ctx);
req_set_fail(req);
+ io_fill_cqe_req(req, -ECANCELED, 0);
+ io_commit_cqring(req->ctx);
io_put_req_deferred(req);
}
return do_complete;
@@ -5924,7 +5927,7 @@ static int io_timeout_cancel(struct io_ring_ctx *ctx, __u64 user_data)
return PTR_ERR(req);
req_set_fail(req);
- io_cqring_fill_event(ctx, req->user_data, -ECANCELED, 0);
+ io_fill_cqe_req(req, -ECANCELED, 0);
io_put_req_deferred(req);
return 0;
}
@@ -8122,8 +8125,7 @@ static void __io_rsrc_put_work(struct io_rsrc_node *ref_node)
io_ring_submit_lock(ctx, lock_ring);
spin_lock(&ctx->completion_lock);
- io_cqring_fill_event(ctx, prsrc->tag, 0, 0);
- ctx->cq_extra++;
+ io_fill_cqe_aux(ctx, prsrc->tag, 0, 0);
io_commit_cqring(ctx);
spin_unlock(&ctx->completion_lock);
io_cqring_ev_posted(ctx);
--
2.33.0
