From: Gavin Hu <gavin.hu@arm.com>
To: dev@dpdk.org
Cc: nd@arm.com, thomas@monjalon.net, jerinj@marvell.com,
hemant.agrawal@nxp.com, nipun.gupta@nxp.com,
Honnappa.Nagarahalli@arm.com, gavin.hu@arm.com,
olivier.matz@6wind.com
Subject: [dpdk-dev] [PATCH v10 1/2] ring: add reset API to flush the ring when not in use
Date: Wed, 17 Jul 2019 03:23:55 +0800 [thread overview]
Message-ID: <1563305036-21890-2-git-send-email-gavin.hu@arm.com> (raw)
In-Reply-To: <1563305036-21890-1-git-send-email-gavin.hu@arm.com>
In-Reply-To: <20181212062404.30243-1-gavin.hu@arm.com>
Currently, the flush is done by dequeuing the ring in a while loop. It is
much simpler to flush the queue by resetting the head and tail indices.
Signed-off-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
---
lib/librte_ring/rte_ring.c | 7 +++++++
lib/librte_ring/rte_ring.h | 17 +++++++++++++++++
lib/librte_ring/rte_ring_version.map | 7 +++++++
3 files changed, 31 insertions(+)
diff --git a/lib/librte_ring/rte_ring.c b/lib/librte_ring/rte_ring.c
index b30b2aa..d9b3080 100644
--- a/lib/librte_ring/rte_ring.c
+++ b/lib/librte_ring/rte_ring.c
@@ -63,6 +63,13 @@ rte_ring_get_memsize(unsigned count)
return sz;
}
+void
+rte_ring_reset(struct rte_ring *r)
+{
+ r->prod.head = r->cons.head = 0;
+ r->prod.tail = r->cons.tail = 0;
+}
+
int
rte_ring_init(struct rte_ring *r, const char *name, unsigned count,
unsigned flags)
diff --git a/lib/librte_ring/rte_ring.h b/lib/librte_ring/rte_ring.h
index e5a175c..2a9f768 100644
--- a/lib/librte_ring/rte_ring.h
+++ b/lib/librte_ring/rte_ring.h
@@ -669,6 +669,23 @@ rte_ring_dequeue(struct rte_ring *r, void **obj_p)
}
/**
+ * Flush a ring.
+ *
+ * This function flush all the elements in a ring
+ *
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * @warning
+ * Make sure the ring is not in use while calling this function.
+ *
+ * @param r
+ * A pointer to the ring structure.
+ */
+__rte_experimental
+void
+rte_ring_reset(struct rte_ring *r);
+
+/**
* Return the number of entries in a ring.
*
* @param r
diff --git a/lib/librte_ring/rte_ring_version.map b/lib/librte_ring/rte_ring_version.map
index d935efd..510c138 100644
--- a/lib/librte_ring/rte_ring_version.map
+++ b/lib/librte_ring/rte_ring_version.map
@@ -17,3 +17,10 @@ DPDK_2.2 {
rte_ring_free;
} DPDK_2.0;
+
+EXPERIMENTAL {
+ global:
+
+ rte_ring_reset;
+
+};
--
2.7.4
next prev parent reply other threads:[~2019-07-16 19:24 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-12 6:24 [PATCH v1 0/2] add rte_ring_reset and use it to flush a ring Gavin Hu
2018-12-12 6:24 ` [PATCH v1 1/2] ring: add rte_ring_reset api to flush the ring Gavin Hu
2018-12-12 6:24 ` [PATCH v1 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu
2018-12-12 6:47 ` [PATCH v2 0/2] add rte ring reset api and use it to flush a ring by hash Gavin Hu
2018-12-12 6:47 ` [PATCH v2 1/2] ring: add reset api to flush the ring when not in use Gavin Hu
2018-12-12 6:47 ` [PATCH v2 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu
2018-12-12 10:15 ` Bruce Richardson
2018-12-12 19:28 ` Mattias Rönnblom
2019-03-15 3:31 ` [PATCH v7 0/2] new ring reset api and use it by hash Gavin Hu
2019-03-15 3:31 ` [PATCH v7 1/2] ring: add reset API to flush the ring when not in use Gavin Hu
2019-03-29 14:17 ` Olivier Matz
2019-07-04 14:42 ` [dpdk-dev] " Thomas Monjalon
2019-07-12 9:32 ` Gavin Hu (Arm Technology China)
2019-07-12 9:53 ` Olivier Matz
2019-07-12 11:06 ` Gavin Hu (Arm Technology China)
2019-07-12 11:48 ` Olivier Matz
2019-07-12 15:07 ` Gavin Hu (Arm Technology China)
2019-07-12 15:40 ` Honnappa Nagarahalli
2019-07-12 16:01 ` Gavin Hu (Arm Technology China)
2019-07-16 8:47 ` Olivier Matz
2019-07-16 9:00 ` Olivier Matz
2019-03-15 3:31 ` [PATCH v7 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu
2019-07-12 9:26 ` [dpdk-dev] [PATCH v8 0/2] new ring reset api and use it by hash Gavin Hu
2019-07-12 9:26 ` [dpdk-dev] [PATCH v8 1/2] ring: add reset API to flush the ring when not in use Gavin Hu
2019-07-12 9:26 ` [dpdk-dev] [PATCH v8 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu
2019-07-12 15:54 ` [dpdk-dev] [PATCH v9 0/2] new ring reset api and use it by hash Gavin Hu
2019-07-12 15:54 ` [dpdk-dev] [PATCH v9 1/2] ring: add reset API to flush the ring when not in use Gavin Hu
2019-07-16 9:01 ` Olivier Matz
2019-07-16 11:31 ` Olivier Matz
2019-07-16 14:03 ` Gavin Hu (Arm Technology China)
2019-07-16 15:06 ` Thomas Monjalon
2019-07-16 19:25 ` Gavin Hu (Arm Technology China)
2019-07-12 15:54 ` [dpdk-dev] [PATCH v9 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu
2019-07-16 19:23 ` [dpdk-dev] [PATCH v10 0/2] new ring reset api and use it by hash Gavin Hu
2019-07-17 17:53 ` Thomas Monjalon
2019-07-16 19:23 ` Gavin Hu [this message]
2019-07-16 19:23 ` [dpdk-dev] [PATCH v10 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu
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