[dpdk-dev] [PATCH v4 0/3] mempool: user-owned mempool caches

[Olivier Matz]

Updated version of the user-owned cache patchset.  It applies on top of
the latest external mempool manager patches from David Hunt [1].

[1] http://dpdk.org/ml/archives/dev/2016-June/041479.html

v4 changes:

 * Fix compilation with shared libraries
 * Add a GOTO_ERR() macro to factorize code in test_mempool.c
 * Change title of patch 2 to conform to check-git-log.sh

v3 changes:

 * Deprecate specific mempool API calls instead of removing them.
 * Split deprecation into a separate commit to limit noise.
 * Fix cache flush by setting cache->len = 0 and make it inline.
 * Remove cache->size == 0 checks and ensure size != 0 at creation.
 * Fix tests to check if cache creation succeeded.
 * Fix tests to free allocated resources on error.

The mempool cache is only available to EAL threads as a per-lcore
resource. Change this so that the user can create and provide their own
cache on mempool get and put operations. This works with non-EAL threads
too.

Also, deprecate the explicit {mp,sp}_put and {mc,sc}_get calls and
re-route them through the new generic calls. Minor cleanup to pass the
mempool bit flags instead of using specific is_mp and is_mc. The old
cache-oblivious API calls use the per-lcore default local cache. The
mempool and mempool_perf tests are also updated to handle the
user-owned cache case.

Introduced API calls:

    rte_mempool_cache_create(size, socket_id)
    rte_mempool_cache_free(cache)
    rte_mempool_cache_flush(cache, mp)
    rte_mempool_default_cache(mp, lcore_id)

    rte_mempool_generic_put(mp, obj_table, n, cache, flags)
    rte_mempool_generic_get(mp, obj_table, n, cache, flags)

Deprecated API calls:

    rte_mempool_mp_put_bulk(mp, obj_table, n)
    rte_mempool_sp_put_bulk(mp, obj_table, n)
    rte_mempool_mp_put(mp, obj)
    rte_mempool_sp_put(mp, obj)
    rte_mempool_mc_get_bulk(mp, obj_table, n)
    rte_mempool_sc_get_bulk(mp, obj_table, n)
    rte_mempool_mc_get(mp, obj_p)
    rte_mempool_sc_get(mp, obj_p)


Lazaros Koromilas (3):
  mempool: deprecate specific get/put functions
  mempool: use bit flags to set multi consumers or producers
  mempool: allow for user-owned mempool caches

 app/test/test_mempool.c                    |  85 +++++++---
 app/test/test_mempool_perf.c               |  70 ++++++--
 lib/librte_mempool/rte_mempool.c           |  66 +++++++-
 lib/librte_mempool/rte_mempool.h           | 256 +++++++++++++++++++++--------
 lib/librte_mempool/rte_mempool_version.map |   4 +
 5 files changed, 371 insertions(+), 110 deletions(-)

-- 
2.8.1