patches for DPDK stable branches
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From: Nick Connolly <nick.connolly@mayadata.io>
To: Anatoly Burakov <anatoly.burakov@intel.com>
Cc: dev@dpdk.org, Nick Connolly <nick.connolly@mayadata.io>,
	nicolas.dichtel@6wind.com, stable@dpdk.org
Subject: [dpdk-stable] [PATCH] mem: fix allocation failure on non-NUMA kernel
Date: Wed,  5 Aug 2020 13:26:40 +0100
Message-ID: <20200805122640.13884-1-nick.connolly@mayadata.io> (raw)

Running dpdk-helloworld on Linux with lib numa present,
but no kernel support for NUMA (CONFIG_NUMA=n) causes
ret_service_init() to fail with EAL: error allocating
rte services array.

alloc_seg() calls get_mempolicy to verify that the allocation
has happened on the correct socket, but receives ENOSYS from
the kernel and fails the allocation.

The allocated socket should only be verified if check_numa() is true.

Fixes: 2a96c88be83e ("mem: ease init in a docker container")
Cc: nicolas.dichtel@6wind.com
Cc: stable@dpdk.org
Signed-off-by: Nick Connolly <nick.connolly@mayadata.io>
---
 lib/librte_eal/linux/eal_memalloc.c | 28 +++++++++++++++++-----------
 1 file changed, 17 insertions(+), 11 deletions(-)

diff --git a/lib/librte_eal/linux/eal_memalloc.c b/lib/librte_eal/linux/eal_memalloc.c
index db60e7997..179757809 100644
--- a/lib/librte_eal/linux/eal_memalloc.c
+++ b/lib/librte_eal/linux/eal_memalloc.c
@@ -610,17 +610,23 @@ alloc_seg(struct rte_memseg *ms, void *addr, int socket_id,
 	}
 
 #ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES
-	ret = get_mempolicy(&cur_socket_id, NULL, 0, addr,
-			    MPOL_F_NODE | MPOL_F_ADDR);
-	if (ret < 0) {
-		RTE_LOG(DEBUG, EAL, "%s(): get_mempolicy: %s\n",
-			__func__, strerror(errno));
-		goto mapped;
-	} else if (cur_socket_id != socket_id) {
-		RTE_LOG(DEBUG, EAL,
-				"%s(): allocation happened on wrong socket (wanted %d, got %d)\n",
-			__func__, socket_id, cur_socket_id);
-		goto mapped;
+	if (check_numa()) {
+		ret = get_mempolicy(&cur_socket_id, NULL, 0, addr,
+					MPOL_F_NODE | MPOL_F_ADDR);
+		if (ret < 0) {
+			RTE_LOG(DEBUG, EAL, "%s(): get_mempolicy: %s\n",
+				__func__, strerror(errno));
+			goto mapped;
+		} else if (cur_socket_id != socket_id) {
+			RTE_LOG(DEBUG, EAL,
+					"%s(): allocation happened on wrong socket (wanted %d, got %d)\n",
+				__func__, socket_id, cur_socket_id);
+			goto mapped;
+		}
+	} else {
+		if (rte_socket_count() > 1)
+			RTE_LOG(DEBUG, EAL, "%s(): not checking socket for allocation (wanted %d)\n",
+					__func__, socket_id);
 	}
 #else
 	if (rte_socket_count() > 1)
-- 
2.25.1


             reply	other threads:[~2020-08-05 12:26 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-05 12:26 Nick Connolly [this message]
2020-08-05 13:42 ` Nicolas Dichtel
2020-08-05 14:20   ` Nick Connolly
2020-08-05 14:36     ` Nicolas Dichtel
2020-08-05 14:53       ` Nick Connolly
2020-08-05 15:13         ` Nicolas Dichtel
2020-08-05 15:21           ` Nick Connolly
2020-09-17 11:28             ` Burakov, Anatoly
2020-09-17 11:31 ` Burakov, Anatoly
2020-09-17 12:29   ` Nick Connolly
2020-09-17 12:57     ` Burakov, Anatoly
2020-09-17 13:05       ` Nick Connolly
2020-09-17 14:07         ` Burakov, Anatoly
2020-09-17 14:08           ` Nick Connolly
2020-09-17 14:18             ` Burakov, Anatoly
2020-09-17 14:19               ` Nick Connolly
2020-10-12 19:28 ` [dpdk-stable] [PATCH v2] " Nick Connolly
2020-10-13  7:59   ` Nicolas Dichtel
2020-10-13 12:01     ` David Marchand

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