[RFC,2/5] event/sw: support power monitor
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Commit Message
Currently sw eventdev pmd does not support ``rte_power_monitor`` api.
This patch adds support by adding monitor callback that is called
whenever we enter sleep state and need to check if it is time to
wake up.
Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>
---
drivers/event/sw/sw_evdev.c | 2 ++
drivers/event/sw/sw_evdev.h | 2 ++
drivers/event/sw/sw_evdev_worker.c | 27 +++++++++++++++++++++++++++
3 files changed, 31 insertions(+)
@@ -958,6 +958,8 @@ sw_probe(struct rte_vdev_device *vdev)
.port_unlink = sw_port_unlink,
.port_unlinks_in_progress = sw_port_unlinks_in_progress,
+ .get_monitor_addr = sw_event_get_monitor_addr,
+
.eth_rx_adapter_caps_get = sw_eth_rx_adapter_caps_get,
.timer_adapter_caps_get = sw_timer_adapter_caps_get,
@@ -312,6 +312,8 @@ int sw_xstats_reset(struct rte_eventdev *dev,
int16_t queue_port_id,
const uint64_t ids[],
uint32_t nb_ids);
+int sw_event_get_monitor_addr(void *port,
+ struct rte_power_monitor_cond *pmc);
int test_sw_eventdev(void);
@@ -10,6 +10,33 @@
#define PORT_ENQUEUE_MAX_BURST_SIZE 64
+static int
+sw_event_ring_monitor_callback(const uint64_t value,
+ const uint64_t arg[RTE_POWER_MONITOR_OPAQUE_SZ])
+{
+ /* Check if the head pointer has changed */
+ return value != arg[0];
+}
+
+int
+sw_event_get_monitor_addr(void *port, struct rte_power_monitor_cond *pmc)
+{
+ struct sw_port *p = (void *)port;
+ struct rte_event_ring *ev_ring = p->cq_worker_ring;
+ struct rte_ring *rng = &ev_ring->r;
+
+ /*
+ * Monitor event ring producer tail since if
+ * prod.tail moves there are events to dequeue
+ */
+ pmc->addr = &rng->prod.tail;
+ pmc->size = sizeof(rng->prod.tail);
+ pmc->opaque[0] = rng->prod.tail;
+ pmc->fn = sw_event_ring_monitor_callback;
+
+ return 0;
+}
+
static inline void
sw_event_release(struct sw_port *p, uint8_t index)
{