From: Stefan Roesch <[email protected]>
To: [email protected], [email protected]
Cc: [email protected], [email protected], [email protected]
Subject: [PATCH v6 1/4] liburing: add api to set napi busy poll settings
Date: Fri, 3 Feb 2023 11:03:07 -0800 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
This adds two functions to manage the napi busy poll settings:
- io_uring_register_napi
- io_uring_unregister_napi
Signed-off-by: Stefan Roesch <[email protected]>
---
src/include/liburing.h | 3 +++
src/include/liburing/io_uring.h | 12 ++++++++++++
src/liburing.map | 3 +++
src/register.c | 12 ++++++++++++
4 files changed, 30 insertions(+)
diff --git a/src/include/liburing.h b/src/include/liburing.h
index 1f91983..13546c4 100644
--- a/src/include/liburing.h
+++ b/src/include/liburing.h
@@ -240,6 +240,9 @@ int io_uring_register_sync_cancel(struct io_uring *ring,
int io_uring_register_file_alloc_range(struct io_uring *ring,
unsigned off, unsigned len);
+int io_uring_register_napi(struct io_uring *ring, struct io_uring_napi *napi);
+int io_uring_unregister_napi(struct io_uring *ring, struct io_uring_napi *napi);
+
int io_uring_get_events(struct io_uring *ring);
int io_uring_submit_and_get_events(struct io_uring *ring);
diff --git a/src/include/liburing/io_uring.h b/src/include/liburing/io_uring.h
index 636a4c2..ab6c86e 100644
--- a/src/include/liburing/io_uring.h
+++ b/src/include/liburing/io_uring.h
@@ -518,6 +518,10 @@ enum {
/* register a range of fixed file slots for automatic slot allocation */
IORING_REGISTER_FILE_ALLOC_RANGE = 25,
+ /* set/clear busy poll settings */
+ IORING_REGISTER_NAPI = 26,
+ IORING_UNREGISTER_NAPI = 27,
+
/* this goes last */
IORING_REGISTER_LAST
};
@@ -640,6 +644,14 @@ struct io_uring_buf_reg {
__u64 resv[3];
};
+/* argument for IORING_(UN)REGISTER_NAPI */
+struct io_uring_napi {
+ __u32 busy_poll_to;
+ __u8 prefer_busy_poll;
+ __u8 pad[3];
+ __u64 resv;
+};
+
/*
* io_uring_restriction->opcode values
*/
diff --git a/src/liburing.map b/src/liburing.map
index 1dbe765..013dc4a 100644
--- a/src/liburing.map
+++ b/src/liburing.map
@@ -76,4 +76,7 @@ LIBURING_2.4 {
io_uring_enable_rings;
io_uring_register_restrictions;
+
+ io_uring_register_napi;
+ io_uring_unregister_napi;
} LIBURING_2.3;
diff --git a/src/register.c b/src/register.c
index ac4c9e3..966839b 100644
--- a/src/register.c
+++ b/src/register.c
@@ -342,3 +342,15 @@ int io_uring_register_file_alloc_range(struct io_uring *ring,
IORING_REGISTER_FILE_ALLOC_RANGE, &range,
0);
}
+
+int io_uring_register_napi(struct io_uring *ring, struct io_uring_napi *napi)
+{
+ return __sys_io_uring_register(ring->ring_fd,
+ IORING_REGISTER_NAPI, napi, 0);
+}
+
+int io_uring_unregister_napi(struct io_uring *ring, struct io_uring_napi *napi)
+{
+ return __sys_io_uring_register(ring->ring_fd,
+ IORING_UNREGISTER_NAPI, napi, 0);
+}
--
2.30.2
next prev parent reply other threads:[~2023-02-03 19:03 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-03 19:03 [PATCH v6 0/4] liburing: add api for napi busy poll Stefan Roesch
2023-02-03 19:03 ` Stefan Roesch [this message]
2023-02-03 20:19 ` [PATCH v6 1/4] liburing: add api to set napi busy poll settings Ammar Faizi
2023-02-03 21:06 ` Stefan Roesch
2023-02-03 19:03 ` [PATCH v6 2/4] liburing: add documentation for new napi busy polling Stefan Roesch
2023-02-03 19:03 ` [PATCH v6 3/4] liburing: add example programs for napi busy poll Stefan Roesch
2023-02-03 20:43 ` Ammar Faizi
2023-02-03 21:14 ` Stefan Roesch
2023-02-03 21:20 ` Ammar Faizi
2023-02-03 19:03 ` [PATCH v6 4/4] liburing: update changelog with new feature Stefan Roesch
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