[dpdk-dev] [PATCH 3/6] service cores: EAL init changes

[Harry van Haaren]

This commit shows the changes required in rte_eal_init()
to transparently launch the service threads. The threads
are launched into the service worker functions here because
after rte_eal_init() the application is not gauranteed to
call any other DPDK API.

As the registration of services happens at initialization
time, the services that require CPU time are already available
when we reach the end of rte_eal_init().

Signed-off-by: Harry van Haaren <harry.van.haaren at intel.com>
---
 lib/librte_eal/linuxapp/eal/eal.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 7c78f2d..4d6ad0e 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -78,6 +78,7 @@
 #include <rte_version.h>
 #include <rte_atomic.h>
 #include <malloc_heap.h>
+#include <rte_service_private.h>
 
 #include "eal_private.h"
 #include "eal_thread.h"
@@ -939,6 +940,20 @@ rte_eal_init(int argc, char **argv)
 		return -1;
 	}
 
+	/* initialize service core threads and default service-core mapping */
+	struct rte_config *config = rte_eal_get_configuration();
+	uint32_t service_cores[RTE_MAX_LCORE];
+	int count = rte_service_core_list(service_cores, RTE_MAX_LCORE);
+	for (i = 0; i < count; i++) {
+		config->lcore_role[service_cores[i]] = ROLE_SERVICE;
+		rte_service_core_start(service_cores[i]);
+	}
+	ret = rte_service_init_default_mapping();
+	if (ret) {
+		rte_errno = ENOEXEC;
+		return -1;
+	}
+
 	rte_eal_mcfg_complete();
 
 	return fctret;
-- 
2.7.4