Re: [PATCH 6/6] service cores: enable event/sw with service

Date: Fri, 23 Jun 2017 10:06:19 +0100
From: Harry van Haaren <redacted>
To: dev@dpdk.org
CC: thomas@monjalon.net, jerin.jacob@caviumnetworks.com,
 keith.wiles@intel.com, bruce.richardson@intel.com, Harry van Haaren
 [off-list ref]
Subject: [PATCH 6/6] service cores: enable event/sw with service
X-Mailer: git-send-email 2.7.4

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 <redacted>
---
 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);