On 10/9/24 18:50, Jens Axboe wrote:
On 10/7/24 4:15 PM, David Wei wrote:
From: David Wei <davidhwei@xxxxxxxx>
...
diff --git a/io_uring/Makefile b/io_uring/Makefile
index 61923e11c767..1a1184f3946a 100644
--- a/io_uring/Makefile
+++ b/io_uring/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_IO_URING) += io_uring.o opdef.o kbuf.o rsrc.o notif.o \
epoll.o statx.o timeout.o fdinfo.o \
cancel.o waitid.o register.o \
truncate.o memmap.o
+obj-$(CONFIG_PAGE_POOL) += zcrx.o
obj-$(CONFIG_IO_WQ) += io-wq.o
obj-$(CONFIG_FUTEX) += futex.o
obj-$(CONFIG_NET_RX_BUSY_POLL) += napi.o
I wonder if this should be expressed a bit differently. Probably have a
CONFIG_IO_URING_ZCRX which depends on CONFIG_INET and CONFIG_PAGE_POOL.
And then you can also use that rather than doing:
#if defined(CONFIG_PAGE_POOL) && defined(CONFIG_INET)
in some spots. Not a big deal, it'll work as-is. And honestly should
probably cleanup the existing IO_WQ symbol while at it, so perhaps
better left for after the fact.
I should probably just add not selectable by user
CONFIG_IO_URING_ZCRX and make it depend on INET/etc.
+static int io_allocate_rbuf_ring(struct io_zcrx_ifq *ifq,
+ struct io_uring_zcrx_ifq_reg *reg)
+{
+ size_t off, size;
+ void *ptr;
+
+ off = sizeof(struct io_uring);
+ size = off + sizeof(struct io_uring_zcrx_rqe) * reg->rq_entries;
+
+ ptr = io_pages_map(&ifq->rqe_pages, &ifq->n_rqe_pages, size);
+ if (IS_ERR(ptr))
+ return PTR_ERR(ptr);
+
+ ifq->rq_ring = (struct io_uring *)ptr;
+ ifq->rqes = (struct io_uring_zcrx_rqe *)((char *)ptr + off);
+ return 0;
+}
No need to cast that ptr to char *.
I'll apply it and other small nits, thanks for the review
--
Pavel Begunkov
