From b206376438f1cb2ccd389f3be4e6b2e459c99ea9 Mon Sep 17 00:00:00 2001 From: David Marchand Date: Tue, 19 Feb 2019 21:38:13 +0100 Subject: [PATCH] eal: fix check when retrieving current CPU affinity pthread_getaffinity_np returns a >0 value when failing. This is mainly for the sake of correctness. The only case where it could fail is when passing an incorrect cpuset size wrt to the kernel. Fixes: 2eba8d21f3c9 ("eal: restrict cores auto detection") Cc: stable@dpdk.org Signed-off-by: David Marchand Reviewed-by: Anatoly Burakov Reviewed-by: Rami Rosen --- lib/librte_eal/common/eal_common_options.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c index 6c96f459c7..1f45f82f35 100644 --- a/lib/librte_eal/common/eal_common_options.c +++ b/lib/librte_eal/common/eal_common_options.c @@ -1343,10 +1343,9 @@ eal_auto_detect_cores(struct rte_config *cfg) unsigned int lcore_id; unsigned int removed = 0; rte_cpuset_t affinity_set; - pthread_t tid = pthread_self(); - if (pthread_getaffinity_np(tid, sizeof(rte_cpuset_t), - &affinity_set) < 0) + if (pthread_getaffinity_np(pthread_self(), sizeof(rte_cpuset_t), + &affinity_set)) CPU_ZERO(&affinity_set); for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) { -- 2.20.1