From e763e8c86d9f10761a75c2be8510a79f25d63831 Mon Sep 17 00:00:00 2001
From: Chunsheng Luo <luochunsheng@ustc.edu>
Date: Thu, 25 Jan 2024 23:54:56 +0800
Subject: [PATCH] libnuma: Fix unexpected output
 
When errno is 0, numa_error(__FILE__) will print "xx: Success",
which is not as expected
 
Signed-off-by: Chunsheng Luo <luochunsheng@ustc.edu>
Reported-by: Ajay Panyala
 
Conflict: NA
Reference:https://github.com/numactl/numactl/commit/e763e8c86d9f10761a75c2be8510a79f25d63831
---
 libnuma.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
 
diff --git a/libnuma.c b/libnuma.c
index 8b07ab0..e898297 100644
--- a/libnuma.c
+++ b/libnuma.c
@@ -1882,8 +1882,10 @@ static struct bitmask *__numa_preferred(void)
 			policy != MPOL_BIND)
 		return bmp;
 
-	if (numa_bitmask_weight(bmp) > 1)
+	if (numa_bitmask_weight(bmp) > 1) {
+		errno = EINVAL;
 		numa_error(__FILE__);
+	}
 
 	return bmp;
 }
@@ -1903,8 +1905,11 @@ int numa_preferred(void)
 static void __numa_set_preferred(struct bitmask *bmp)
 {
 	int nodes = numa_bitmask_weight(bmp);
-	if (nodes > 1)
+	if (nodes > 1) {
+		errno = EINVAL;
 		numa_error(__FILE__);
+	}
+
 	setpol(nodes ? MPOL_PREFERRED : MPOL_LOCAL, bmp);
 }
 
-- 
2.27.0