[dpdk-dev] [RFC PATCH 6/6] mempool/bucket: implement block dequeue operation
Andrew Rybchenko
arybchenko at solarflare.com
Fri Nov 24 17:06:31 CET 2017
From: "Artem V. Andreev" <Artem.Andreev at oktetlabs.ru>
Signed-off-by: Artem V. Andreev <Artem.Andreev at oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
drivers/mempool/bucket/rte_mempool_bucket.c | 38 +++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/drivers/mempool/bucket/rte_mempool_bucket.c b/drivers/mempool/bucket/rte_mempool_bucket.c
index 4063d2c..ee5a6cf 100644
--- a/drivers/mempool/bucket/rte_mempool_bucket.c
+++ b/drivers/mempool/bucket/rte_mempool_bucket.c
@@ -315,6 +315,42 @@ bucket_dequeue(struct rte_mempool *mp, void **obj_table, unsigned int n)
return rc;
}
+static int
+bucket_dequeue_contig_blocks(struct rte_mempool *mp, void **first_obj_table,
+ unsigned int n)
+{
+ struct bucket_data *data = mp->pool_data;
+ const uint32_t header_size = data->header_size;
+ struct bucket_stack *cur_stack = data->buckets[rte_lcore_id()];
+ unsigned int n_buckets_from_stack = RTE_MIN(n, cur_stack->top);
+ struct bucket_header *hdr;
+ void **first_objp = first_obj_table;
+
+ bucket_adopt_orphans(data);
+
+ n -= n_buckets_from_stack;
+ while (n_buckets_from_stack-- > 0) {
+ hdr = bucket_stack_pop_unsafe(cur_stack);
+ *first_objp++ = (uint8_t *)hdr + header_size;
+ }
+ while (n-- > 0) {
+ if (unlikely(rte_ring_dequeue(data->shared_bucket_ring,
+ (void **)&hdr) != 0)) {
+ /* Return the already dequeued buckets */
+ while (first_objp-- != first_obj_table) {
+ bucket_stack_push(cur_stack,
+ (uint8_t *)*first_objp - header_size);
+ }
+ rte_errno = ENOBUFS;
+ return -rte_errno;
+ }
+ hdr->lcore_id = rte_lcore_id();
+ *first_objp++ = (uint8_t *)hdr + header_size;
+ }
+
+ return 0;
+}
+
static unsigned int
bucket_get_count(const struct rte_mempool *mp)
{
@@ -468,6 +504,7 @@ bucket_get_info(__rte_unused const struct rte_mempool *mp,
mp->trailer_size;
info->cluster_size = BUCKET_MEM_SIZE / chunk_size;
+ info->contig_block_size = info->cluster_size;
return 0;
}
@@ -515,6 +552,7 @@ static const struct rte_mempool_ops ops_bucket = {
.get_capabilities = bucket_get_capabilities,
.register_memory_area = bucket_register_memory_area,
.get_info = bucket_get_info,
+ .dequeue_contig_blocks = bucket_dequeue_contig_blocks,
};
--
2.7.4
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