[dpdk-dev] [PATCH] eal: store control thread CPU affinity in TLS
jerinj at marvell.com
jerinj at marvell.com
Wed Feb 5 11:24:15 CET 2020
From: Jerin Jacob <jerinj at marvell.com>
_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 at marvell.com>
---
lib/librte_eal/common/eal_common_thread.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/lib/librte_eal/common/eal_common_thread.c b/lib/librte_eal/common/eal_common_thread.c
index 78581753c..99fe1aa4e 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(¶ms->configured);
if (ret == PTHREAD_BARRIER_SERIAL_THREAD) {
pthread_barrier_destroy(¶ms->configured);
--
2.24.1
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