From: Jason Wang <jasowang@redhat.com>
To: mst@redhat.com, kvm@vger.kernel.org,
virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Jason Wang <jasowang@redhat.com>
Subject: [PATCH net-next 1/8] ptr_ring: introduce batch dequeuing
Date: Tue, 21 Mar 2017 12:04:40 +0800 [thread overview]
Message-ID: <1490069087-4783-2-git-send-email-jasowang@redhat.com> (raw)
In-Reply-To: <1490069087-4783-1-git-send-email-jasowang@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
include/linux/ptr_ring.h | 65 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 65 insertions(+)
diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h
index 6c70444..4771ded 100644
--- a/include/linux/ptr_ring.h
+++ b/include/linux/ptr_ring.h
@@ -247,6 +247,22 @@ static inline void *__ptr_ring_consume(struct ptr_ring *r)
return ptr;
}
+static inline int __ptr_ring_consume_batched(struct ptr_ring *r,
+ void **array, int n)
+{
+ void *ptr;
+ int i = 0;
+
+ while (i < n) {
+ ptr = __ptr_ring_consume(r);
+ if (!ptr)
+ break;
+ array[i++] = ptr;
+ }
+
+ return i;
+}
+
/*
* Note: resize (below) nests producer lock within consumer lock, so if you
* call this in interrupt or BH context, you must disable interrupts/BH when
@@ -297,6 +313,55 @@ static inline void *ptr_ring_consume_bh(struct ptr_ring *r)
return ptr;
}
+static inline int ptr_ring_consume_batched(struct ptr_ring *r,
+ void **array, int n)
+{
+ int ret;
+
+ spin_lock(&r->consumer_lock);
+ ret = __ptr_ring_consume_batched(r, array, n);
+ spin_unlock(&r->consumer_lock);
+
+ return ret;
+}
+
+static inline int ptr_ring_consume_batched_irq(struct ptr_ring *r,
+ void **array, int n)
+{
+ int ret;
+
+ spin_lock_irq(&r->consumer_lock);
+ ret = __ptr_ring_consume_batched(r, array, n);
+ spin_unlock_irq(&r->consumer_lock);
+
+ return ret;
+}
+
+static inline int ptr_ring_consume_batched_any(struct ptr_ring *r,
+ void **array, int n)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&r->consumer_lock, flags);
+ ret = __ptr_ring_consume_batched(r, array, n);
+ spin_unlock_irqrestore(&r->consumer_lock, flags);
+
+ return ret;
+}
+
+static inline int ptr_ring_consume_batched_bh(struct ptr_ring *r,
+ void **array, int n)
+{
+ int ret;
+
+ spin_lock_bh(&r->consumer_lock);
+ ret = __ptr_ring_consume_batched(r, array, n);
+ spin_unlock_bh(&r->consumer_lock);
+
+ return ret;
+}
+
/* Cast to structure type and call a function without discarding from FIFO.
* Function must return a value.
* Callers must take consumer_lock.
--
2.7.4
next prev parent reply other threads:[~2017-03-21 4:15 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-21 4:04 [PATCH net-next 0/8] vhost-net rx batching Jason Wang
2017-03-21 4:04 ` Jason Wang [this message]
2017-03-21 10:25 ` [PATCH net-next 1/8] ptr_ring: introduce batch dequeuing Sergei Shtylyov
2017-03-22 3:16 ` Jason Wang
2017-03-22 13:43 ` Michael S. Tsirkin
2017-03-23 5:33 ` Jason Wang
2017-03-21 4:04 ` [PATCH net-next 2/8] skb_array: " Jason Wang
2017-03-21 4:04 ` [PATCH net-next 3/8] tun: export skb_array Jason Wang
2017-03-21 4:04 ` [PATCH net-next 4/8] tap: " Jason Wang
2017-03-21 4:04 ` [PATCH net-next 5/8] tun: support receiving skb through msg_control Jason Wang
2017-03-21 4:04 ` [PATCH net-next 6/8] tap: support receiving skb from msg_control Jason Wang
2017-03-21 4:04 ` [PATCH net-next 7/8] vhost_net: try batch dequing from skb array Jason Wang
2017-03-22 14:16 ` Michael S. Tsirkin
2017-03-23 5:34 ` Jason Wang
2017-03-29 9:58 ` Jason Wang
2017-03-29 10:46 ` Pankaj Gupta
2017-03-29 10:53 ` Jason Wang
2017-03-29 21:47 ` Michael S. Tsirkin
2017-03-21 4:04 ` [PATCH net-next 8/8] vhost_net: use lockless peeking for skb array during busy polling Jason Wang
2017-03-29 12:07 ` Michael S. Tsirkin
2017-03-30 2:16 ` Jason Wang
2017-03-30 2:33 ` Michael S. Tsirkin
2017-03-30 3:53 ` Jason Wang
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