Re: [PATCH net-next 1/8] ptr_ring: introduce batch dequeuing

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Hello!

On 3/21/2017 7:04 AM, Jason Wang wrote:

Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
---
 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) {

   Hm, why not *for*?

+		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)
[...]

MBR, Sergei




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