[dpdk-dev] [RFC 1/5] eal: reset lcore function pointer and argument

[Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>]

In the rte_eal_remote_launch function, the lcore function
pointer is checked for NULL. However, the pointer is never
reset to NULL. Reset the lcore function pointer and argument
after the worker has completed executing the lcore function.

Signed-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
---
 lib/librte_eal/freebsd/eal_thread.c | 2 ++
 lib/librte_eal/linux/eal_thread.c   | 2 ++
 lib/librte_eal/windows/eal_thread.c | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/lib/librte_eal/freebsd/eal_thread.c b/lib/librte_eal/freebsd/eal_thread.c
index 1dce9b04f..bbc3a8e98 100644
--- a/lib/librte_eal/freebsd/eal_thread.c
+++ b/lib/librte_eal/freebsd/eal_thread.c
@@ -126,6 +126,8 @@ eal_thread_loop(__rte_unused void *arg)
 		fct_arg = lcore_config[lcore_id].arg;
 		ret = lcore_config[lcore_id].f(fct_arg);
 		lcore_config[lcore_id].ret = ret;
+		lcore_config[lcore_id].f = NULL;
+		lcore_config[lcore_id].arg = NULL;
 		rte_wmb();
 		lcore_config[lcore_id].state = FINISHED;
 	}
diff --git a/lib/librte_eal/linux/eal_thread.c b/lib/librte_eal/linux/eal_thread.c
index 83c2034b9..8f3c0dafd 100644
--- a/lib/librte_eal/linux/eal_thread.c
+++ b/lib/librte_eal/linux/eal_thread.c
@@ -126,6 +126,8 @@ eal_thread_loop(__rte_unused void *arg)
 		fct_arg = lcore_config[lcore_id].arg;
 		ret = lcore_config[lcore_id].f(fct_arg);
 		lcore_config[lcore_id].ret = ret;
+		lcore_config[lcore_id].f = NULL;
+		lcore_config[lcore_id].arg = NULL;
 		rte_wmb();
 
 		/* when a service core returns, it should go directly to WAIT
diff --git a/lib/librte_eal/windows/eal_thread.c b/lib/librte_eal/windows/eal_thread.c
index 908e726d1..b69672fe0 100644
--- a/lib/librte_eal/windows/eal_thread.c
+++ b/lib/librte_eal/windows/eal_thread.c
@@ -110,6 +110,8 @@ eal_thread_loop(void *arg __rte_unused)
 		fct_arg = lcore_config[lcore_id].arg;
 		ret = lcore_config[lcore_id].f(fct_arg);
 		lcore_config[lcore_id].ret = ret;
+		lcore_config[lcore_id].f = NULL;
+		lcore_config[lcore_id].arg = NULL;
 		rte_wmb();
 
 		/* when a service core returns, it should go directly to WAIT
-- 
2.17.1