eventdev/timer: move adapters memory to hugepage

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@marvell.com>

diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index d81c2f213c0990841aee7b92b07158e4f9ffc450..a0ad30927d50c8368403ef09feaf43cca07922d9 100644 (file)
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -363,6 +363,9 @@ API Changes
 
 * bbdev: Added device info related to data byte endianness processing.
 
+* eventdev: Moved 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 ae554070427918205971d564e934045b84448847..af76b77a19d6b00e6b15980fa0248e639bf82c69 100644 (file)
--- 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 = adapters[i].allocated;
+
+       if (!ret) {
+               rte_free(adapters);
+               adapters = NULL;
+       }
+
        rte_eventdev_trace_timer_adapter_free(adapter);
        return 0;
 }