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event/octeontx2: reduce chunk pool memory usage

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Reduce amount of memory used by chunk pool when the mempool used
is OCTEONTX2 NPA.
Previously, the number of chunks configured when NPA is used is
equal to the number of timers requested plus the number of buckets
and if the max timeout is long enough w.r.t. resolution requested
there will a large number of buckets which would cause high memory
usage.
Reduce the number of chunks when NPA is used to the number of timers
requested as buckets that are processed chunk lists are automatically
freed.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
This commit is contained in:
Pavan Nikhilesh 2021-03-23 14:14:37 +05:30 committed by Jerin Jacob
parent 703c02647b
commit 94f0159ba7
2 changed files with 11 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/event/octeontx2/otx2_tim_evdev.c
View File

@ -92,6 +92,8 @@ tim_chnk_pool_create(struct otx2_tim_ring *tim_ring,
if (cache_sz > RTE_MEMPOOL_CACHE_MAX_SIZE)
cache_sz = RTE_MEMPOOL_CACHE_MAX_SIZE;
cache_sz = cache_sz != 0 ? cache_sz : 2;
tim_ring->nb_chunks += (cache_sz * rte_lcore_count());
if (!tim_ring->disable_npa) {
tim_ring->chunk_pool = rte_mempool_create_empty(pool_name,
tim_ring->nb_chunks, tim_ring->chunk_sz,
@ -286,16 +288,15 @@ otx2_tim_ring_create(struct rte_event_timer_adapter *adptr)
}
}
tim_ring->nb_chunks = tim_ring->nb_timers / OTX2_TIM_NB_CHUNK_SLOTS(
tim_ring->chunk_sz);
tim_ring->nb_chunk_slots = OTX2_TIM_NB_CHUNK_SLOTS(tim_ring->chunk_sz);
if (tim_ring->disable_npa)
if (tim_ring->disable_npa) {
tim_ring->nb_chunks =
tim_ring->nb_timers /
OTX2_TIM_NB_CHUNK_SLOTS(tim_ring->chunk_sz);
tim_ring->nb_chunks = tim_ring->nb_chunks * tim_ring->nb_bkts;
else
tim_ring->nb_chunks = tim_ring->nb_chunks + tim_ring->nb_bkts;
/* Create buckets. */
} else {
tim_ring->nb_chunks = tim_ring->nb_timers;
}
tim_ring->nb_chunk_slots = OTX2_TIM_NB_CHUNK_SLOTS(tim_ring->chunk_sz);
tim_ring->bkt = rte_zmalloc("otx2_tim_bucket", (tim_ring->nb_bkts) *
sizeof(struct otx2_tim_bkt),
RTE_CACHE_LINE_SIZE);

2
drivers/event/octeontx2/otx2_tim_evdev.h
View File

@ -70,7 +70,7 @@
#define OTX2_TIM_MAX_BURST (RTE_CACHE_LINE_SIZE / \
OTX2_TIM_CHUNK_ALIGNMENT)
#define OTX2_TIM_NB_CHUNK_SLOTS(sz) (((sz) / OTX2_TIM_CHUNK_ALIGNMENT) - 1)
#define OTX2_TIM_MIN_CHUNK_SLOTS (0x1)
#define OTX2_TIM_MIN_CHUNK_SLOTS (0x8)
#define OTX2_TIM_MAX_CHUNK_SLOTS (0x1FFE)
#define OTX2_TIM_MIN_TMO_TKS (256)