From: Jerin Jacob <jerinj@marvell.com>
Date: Wed, 5 Feb 2020 10:24:15 +0000 (+0530)
Subject: eal: store control thread CPU affinity in TLS
X-Git-Url: http://git.droids-corp.org/?p=dpdk.git;a=commitdiff_plain;h=a7f895740caa04ed3674ad5b054268d862bed83f

eal: store control thread CPU affinity in TLS

_cpuset TLS variable stores the CPU affinity of eal thread.
Populate the _cpuset TLS variable for control thread to

1) Make rte_thread_get_affinity() and eal_thread_dump_affinity
functional with control thread.
2) Quick access to cpu affinity.

Signed-off-by: Jerin Jacob <jerinj@marvell.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
---

diff --git a/lib/librte_eal/common/eal_common_thread.c b/lib/librte_eal/common/eal_common_thread.c
index 78581753c0..99fe1aa4ef 100644
--- a/lib/librte_eal/common/eal_common_thread.c
+++ b/lib/librte_eal/common/eal_common_thread.c
@@ -152,10 +152,14 @@ struct rte_thread_ctrl_params {
 static void *rte_thread_init(void *arg)
 {
 	int ret;
+	rte_cpuset_t *cpuset = &internal_config.ctrl_cpuset;
 	struct rte_thread_ctrl_params *params = arg;
 	void *(*start_routine)(void *) = params->start_routine;
 	void *routine_arg = params->arg;
 
+	/* Store cpuset in TLS for quick access */
+	memmove(&RTE_PER_LCORE(_cpuset), cpuset, sizeof(rte_cpuset_t));
+
 	ret = pthread_barrier_wait(&params->configured);
 	if (ret == PTHREAD_BARRIER_SERIAL_THREAD) {
 		pthread_barrier_destroy(&params->configured);