Commit 1e826669 authored by Alexey Marchuk's avatar Alexey Marchuk Committed by Tomasz Zawadzki
Browse files

accel: Alloc tasks aligned on cache line 



This allows to avoid loading parts of adjacent
tasks into cache

Signed-off-by: default avatarAlexey Marchuk <alexeymar@nvidia.com>
Change-Id: Idd8c7ce606e936b3fc7231fd296c5f6452c74892
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/21126


Reviewed-by: default avatarBen Walker <ben@nvidia.com>
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarKonrad Sztyber <konrad.sztyber@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: default avatarJacek Kalwas <jacek.kalwas@intel.com>
Reviewed-by: default avatarJim Harris <jim.harris@samsung.com>
parent 58285d95

lib/accel/accel.c

+7 −3
Original line number Diff line number Diff line
@@ -2425,14 +2425,18 @@ accel_create_channel(void *io_device, void *ctx_buf) 
	struct spdk_accel_task_aux_data *accel_task_aux;

	struct spdk_accel_sequence *seq;

	struct accel_buffer *buf;

	size_t task_size_aligned;

	uint8_t *task_mem;

	uint32_t i = 0, j;

	int rc;



	accel_ch->task_pool_base = calloc(g_opts.task_count, g_max_accel_module_size);

	if (accel_ch->task_pool_base == NULL) {

	task_size_aligned = SPDK_ALIGN_CEIL(g_max_accel_module_size, SPDK_CACHE_LINE_SIZE);

	accel_ch->task_pool_base = aligned_alloc(SPDK_CACHE_LINE_SIZE,

				   g_opts.task_count * task_size_aligned);

	if (!accel_ch->task_pool_base) {

		return -ENOMEM;

	}

	memset(accel_ch->task_pool_base, 0, g_opts.task_count * task_size_aligned);



	accel_ch->seq_pool_base = aligned_alloc(SPDK_CACHE_LINE_SIZE,

						g_opts.sequence_count * sizeof(struct spdk_accel_sequence));
@@ -2461,7 +2465,7 @@ accel_create_channel(void *io_device, void *ctx_buf) 
		accel_task = (struct spdk_accel_task *)task_mem;

		accel_task->aux = NULL;

		STAILQ_INSERT_TAIL(&accel_ch->task_pool, accel_task, link);

		task_mem += g_max_accel_module_size;

		task_mem += task_size_aligned;

		accel_task_aux = &accel_ch->task_aux_data_base[i];

		SLIST_INSERT_HEAD(&accel_ch->task_aux_data_pool, accel_task_aux, link);

	}