[dpdk-dev] [PATCH v4 0/4] net/virtio: make virtqueue struct cache-friendly
Maxime Coquelin
maxime.coquelin at redhat.com
Tue Mar 16 10:38:21 CET 2021
This series optimizes the cache usage of virtqueue struct,
by making a "fake" mbuf being dynamically allocated in Rx
virtnet struct, by removing a useless virtuque pointer
into the virtnet structs and by moving a few fields
to pack holes.
With these 3 patches, the virtqueue struct size goes from
576 bytes (9 cachelines) to 248 bytes (4 cachelines).
Changes in v4:
==============
- Fix ARM build failure after rebase (0-day robot)
- Fix fake_mbuf freeing (David)
- Applied David R-by
Changes in v3:
==============
- Use rte_zmalloc_socket for fake mbuf alloc (David)
- Fix typos in commit messages
- Remove superfluous pointer check befor freeing (David)
- Fix checkpatch warnings
Changes in v2:
==============
- Rebase on latest main
- Improve error path in virtio_init_queue
- Fix various typos in commit messages
Maxime Coquelin (4):
net/virtio: remove reference to virtqueue in vrings
net/virtio: improve queue init error path
net/virtio: allocate fake mbuf in Rx queue
net/virtio: pack virtqueue struct
drivers/net/virtio/virtio_ethdev.c | 64 +++++++++++--------
drivers/net/virtio/virtio_rxtx.c | 37 +++++------
drivers/net/virtio/virtio_rxtx.h | 5 +-
drivers/net/virtio/virtio_rxtx_packed.c | 4 +-
drivers/net/virtio/virtio_rxtx_packed.h | 6 +-
drivers/net/virtio/virtio_rxtx_packed_avx.h | 4 +-
drivers/net/virtio/virtio_rxtx_packed_neon.h | 4 +-
drivers/net/virtio/virtio_rxtx_simple.h | 2 +-
.../net/virtio/virtio_rxtx_simple_altivec.c | 2 +-
drivers/net/virtio/virtio_rxtx_simple_neon.c | 2 +-
drivers/net/virtio/virtio_rxtx_simple_sse.c | 2 +-
.../net/virtio/virtio_user/virtio_user_dev.c | 4 +-
drivers/net/virtio/virtio_user_ethdev.c | 2 +-
drivers/net/virtio/virtqueue.h | 24 ++++---
14 files changed, 87 insertions(+), 75 deletions(-)
--
2.29.2
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