From: Pallavi Kadam <pallavi.kadam@intel.com>
Date: Fri, 21 Jan 2022 00:17:49 +0000 (-0800)
Subject: eal/windows: set worker thread affinity at init
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=416c1bef9dbc9aed437f87e735500589d2e3d844;p=dpdk.git

eal/windows: set worker thread affinity at init

Sometimes OS tries to switch the core. So, bind the lcore thread
to a fixed core.
Implement affinity call on Windows similar to Linux.

Signed-off-by: Qiao Liu <qiao.liu@intel.com>
Signed-off-by: Pallavi Kadam <pallavi.kadam@intel.com>
Acked-by: Narcisa Vasile <navasile@linux.microsoft.com>
Acked-by: Ranjit Menon <ranjit.menon@intel.com>
Acked-by: Tal Shnaiderman <talshn@nvidia.com>
Tested-by: Idan Hackmon <idanhac@nvidia.com>
---

diff --git a/lib/eal/windows/eal.c b/lib/eal/windows/eal.c
index 67db7f099a..ca3c41aaa7 100644
--- a/lib/eal/windows/eal.c
+++ b/lib/eal/windows/eal.c
@@ -422,6 +422,10 @@ rte_eal_init(int argc, char **argv)
 		/* create a thread for each lcore */
 		if (eal_thread_create(&lcore_config[i].thread_id) != 0)
 			rte_panic("Cannot create thread\n");
+		ret = pthread_setaffinity_np(lcore_config[i].thread_id,
+			sizeof(rte_cpuset_t), &lcore_config[i].cpuset);
+		if (ret != 0)
+			RTE_LOG(DEBUG, EAL, "Cannot set affinity\n");
 	}
 
 	/* Initialize services so drivers can register services during probe. */