Imported Upstream version 17.05

[deb_dpdk.git] / lib / librte_eal / bsdapp / eal / eal_lcore.c

diff --git a/lib/librte_eal/bsdapp/eal/eal_lcore.c b/lib/librte_eal/bsdapp/eal/eal_lcore.c
index b8bfafd..bc584dd 100644 (file)
--- a/lib/librte_eal/bsdapp/eal/eal_lcore.c
+++ b/lib/librte_eal/bsdapp/eal/eal_lcore.c
@@ -53,12 +53,14 @@ eal_cpu_core_id(__rte_unused unsigned lcore_id)
 static int
 eal_get_ncpus(void)
 {
+       static int ncpu = -1;
        int mib[2] = {CTL_HW, HW_NCPU};
-       int ncpu;
        size_t len = sizeof(ncpu);
 
-       sysctl(mib, 2, &ncpu, &len, NULL, 0);
-       RTE_LOG(INFO, EAL, "Sysctl reports %d cpus\n", ncpu);
+       if (ncpu < 0) {
+               sysctl(mib, 2, &ncpu, &len, NULL, 0);
+               RTE_LOG(INFO, EAL, "Sysctl reports %d cpus\n", ncpu);
+       }
        return ncpu;
 }