This commit shows how easy it is to enable a specific
DPDK component with a service callback, in order to get
CPU cycles for it.
The beauty of this method is that the service is unaware
of how much CPU time it is getting - the application can
decide how to split and slice cores and map them to the
registered services.
Signed-off-by: Harry van Haaren <harry.van.haa...@intel.com>
---
drivers/event/sw/sw_evdev.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/event/sw/sw_evdev.c b/drivers/event/sw/sw_evdev.c
index a31aaa6..f55cad9 100644
--- a/drivers/event/sw/sw_evdev.c
+++ b/drivers/event/sw/sw_evdev.c
@@ -38,6 +38,9 @@
#include <rte_ring.h>
#include <rte_errno.h>
+#include <rte_service_private.h>
+#include <rte_cycles.h>
+
#include "sw_evdev.h"
#include "iq_ring.h"
#include "event_ring.h"
@@ -695,6 +698,14 @@ set_credit_quanta(const char *key __rte_unused, const char
*value, void *opaque)
return 0;
}
+
+static int32_t sw_sched_service_func(void *args)
+{
+ struct rte_eventdev *dev = args;
+ sw_event_schedule(dev);
+ return 0;
+}
+
static int
sw_probe(struct rte_vdev_device *vdev)
{
@@ -806,6 +817,17 @@ sw_probe(struct rte_vdev_device *vdev)
sw->credit_update_quanta = credit_quanta;
sw->sched_quanta = sched_quanta;
+ /* register service with EAL */
+ struct rte_service_spec service;
+ memset(&service, 0, sizeof(struct rte_service_spec));
+ snprintf(service.name, sizeof(service.name), "%s_service", name);
+ service.socket_id = socket_id;
+ service.callback = sw_sched_service_func;
+ service.callback_userdata = (void *)dev;
+
+ int32_t ret = rte_service_register(&service);
+ printf("serivce register = %d, cb ud %p\n", ret, dev);
+
return 0;
}
--
2.7.4
