[dpdk-dev] [PATCH v5 11/14] eventdev: move timer adapters memory to hugepage

[pbhagavatula at marvell.com]

From: Pavan Nikhilesh <pbhagavatula at marvell.com>

Move memory used by timer adapters to hugepage.
Allocate memory on the first adapter create or lookup to address
both primary and secondary process usecases.
This will prevent TLB misses if any and aligns to memory structure
of other subsystems.

Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>
---
 doc/guides/rel_notes/release_21_11.rst |  2 ++
 lib/eventdev/rte_event_timer_adapter.c | 36 ++++++++++++++++++++++++--
 2 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index 6442c79977..9694b32002 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -226,6 +226,8 @@ API Changes
   the crypto/security operation. This field will be used to communicate
   events such as soft expiry with IPsec in lookaside mode.
 
+* eventdev: Move memory used by timer adapters to hugepage. This will prevent
+  TLB misses if any and aligns to memory structure of other subsystems.
 
 ABI Changes
 -----------
diff --git a/lib/eventdev/rte_event_timer_adapter.c b/lib/eventdev/rte_event_timer_adapter.c
index ae55407042..894f532ef0 100644
--- a/lib/eventdev/rte_event_timer_adapter.c
+++ b/lib/eventdev/rte_event_timer_adapter.c
@@ -33,7 +33,7 @@ RTE_LOG_REGISTER_SUFFIX(evtim_logtype, adapter.timer, NOTICE);
 RTE_LOG_REGISTER_SUFFIX(evtim_buffer_logtype, adapter.timer, NOTICE);
 RTE_LOG_REGISTER_SUFFIX(evtim_svc_logtype, adapter.timer.svc, NOTICE);
 
-static struct rte_event_timer_adapter adapters[RTE_EVENT_TIMER_ADAPTER_NUM_MAX];
+static struct rte_event_timer_adapter *adapters;
 
 static const struct event_timer_adapter_ops swtim_ops;
 
@@ -138,6 +138,17 @@ rte_event_timer_adapter_create_ext(
 	int n, ret;
 	struct rte_eventdev *dev;
 
+	if (adapters == NULL) {
+		adapters = rte_zmalloc("Eventdev",
+				       sizeof(struct rte_event_timer_adapter) *
+					       RTE_EVENT_TIMER_ADAPTER_NUM_MAX,
+				       RTE_CACHE_LINE_SIZE);
+		if (adapters == NULL) {
+			rte_errno = ENOMEM;
+			return NULL;
+		}
+	}
+
 	if (conf == NULL) {
 		rte_errno = EINVAL;
 		return NULL;
@@ -312,6 +323,17 @@ rte_event_timer_adapter_lookup(uint16_t adapter_id)
 	int ret;
 	struct rte_eventdev *dev;
 
+	if (adapters == NULL) {
+		adapters = rte_zmalloc("Eventdev",
+				       sizeof(struct rte_event_timer_adapter) *
+					       RTE_EVENT_TIMER_ADAPTER_NUM_MAX,
+				       RTE_CACHE_LINE_SIZE);
+		if (adapters == NULL) {
+			rte_errno = ENOMEM;
+			return NULL;
+		}
+	}
+
 	if (adapters[adapter_id].allocated)
 		return &adapters[adapter_id]; /* Adapter is already loaded */
 
@@ -358,7 +380,7 @@ rte_event_timer_adapter_lookup(uint16_t adapter_id)
 int
 rte_event_timer_adapter_free(struct rte_event_timer_adapter *adapter)
 {
-	int ret;
+	int i, ret;
 
 	ADAPTER_VALID_OR_ERR_RET(adapter, -EINVAL);
 	FUNC_PTR_OR_ERR_RET(adapter->ops->uninit, -EINVAL);
@@ -382,6 +404,16 @@ rte_event_timer_adapter_free(struct rte_event_timer_adapter *adapter)
 	adapter->data = NULL;
 	adapter->allocated = 0;
 
+	ret = 0;
+	for (i = 0; i < RTE_EVENT_TIMER_ADAPTER_NUM_MAX; i++)
+		if (adapters[i].allocated)
+			ret = adapter[i].allocated;
+
+	if (!ret) {
+		rte_free(adapters);
+		adapters = NULL;
+	}
+
 	rte_eventdev_trace_timer_adapter_free(adapter);
 	return 0;
 }
-- 
2.17.1