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net/mlx5: DR, Sync chunks only during free

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When freeing chunks, we want to sync the steering
so that all the "hot" memory will be written to ICM
and all the chunks that are in the hot_list will be
actually destroyed.
When allocating from the pool, we don't have a need
to sync the steering, as we're not freeing anything,
and sync might just hurt the performance in terms of
flow-per-second offloaded.

Signed-off-by: Erez Shitrit <erezsh@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Yevgeny Kliteynik 2020-09-14 15:06:49 +03:00 committed by Saeed Mahameed
parent a00cd87880
commit 3eb1006a3b
1 changed files with 8 additions and 6 deletions
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14
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_icm_pool.c
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@ -332,10 +332,6 @@ static int dr_icm_handle_buddies_get_mem(struct mlx5dr_icm_pool *pool,
bool new_mem = false;
int err;
/* Check if we have chunks that are waiting for sync-ste */
if (dr_icm_pool_is_sync_required(pool))
dr_icm_pool_sync_all_buddy_pools(pool);
alloc_buddy_mem:
/* find the next free place from the buddy list */
list_for_each_entry(buddy_mem_pool, &pool->buddy_mem_list, list_node) {
@ -409,12 +405,18 @@ out:
void mlx5dr_icm_free_chunk(struct mlx5dr_icm_chunk *chunk)
{
struct mlx5dr_icm_buddy_mem *buddy = chunk->buddy_mem;
struct mlx5dr_icm_pool *pool = buddy->pool;
/* move the memory to the waiting list AKA "hot" */
mutex_lock(&buddy->pool->mutex);
mutex_lock(&pool->mutex);
list_move_tail(&chunk->chunk_list, &buddy->hot_list);
buddy->hot_memory_size += chunk->byte_size;
mutex_unlock(&buddy->pool->mutex);
/* Check if we have chunks that are waiting for sync-ste */
if (dr_icm_pool_is_sync_required(pool))
dr_icm_pool_sync_all_buddy_pools(pool);
mutex_unlock(&pool->mutex);
}
struct mlx5dr_icm_pool *mlx5dr_icm_pool_create(struct mlx5dr_domain *dmn,