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[v2,2/2] selftests/bpf: Select NUMA_NO_NODE to create map

Message ID cf1f61468b47425ecf3728689bc9636ddd1d910e.1738302337.git.skb99@linux.ibm.com (mailing list archive)
State New
Delegated to: BPF
Headers show
Series [v2,1/2] selftests/bpf: Define SYS_PREFIX for powerpc | expand

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Commit Message

Saket Kumar Bhaskar Jan. 31, 2025, 7:05 a.m. UTC 
On powerpc, a CPU does not necessarily originate from NUMA node 0.
This contrasts with architectures like x86, where CPU 0 is not
hot-pluggable, making NUMA node 0 a consistently valid node.
This discrepancy can lead to failures when creating a map on NUMA
node 0, which is initialized by default, if no CPUs are allocated
from NUMA node 0.

This patch fixes the issue by setting NUMA_NO_NODE (-1) for map
creation for this selftest.

Fixes: 96eabe7a40aa ("bpf: Allow selecting numa node during map creation")
Signed-off-by: Saket Kumar Bhaskar <skb99@linux.ibm.com>
---
 tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c | 5 +++++
 1 file changed, 5 insertions(+)

Comments

Yonghong Song Jan. 31, 2025, 11:21 p.m. UTC | #1 
On 1/30/25 11:05 PM, Saket Kumar Bhaskar wrote:
> On powerpc, a CPU does not necessarily originate from NUMA node 0.
> This contrasts with architectures like x86, where CPU 0 is not
> hot-pluggable, making NUMA node 0 a consistently valid node.
> This discrepancy can lead to failures when creating a map on NUMA
> node 0, which is initialized by default, if no CPUs are allocated
> from NUMA node 0.
>
> This patch fixes the issue by setting NUMA_NO_NODE (-1) for map
> creation for this selftest.
>
> Fixes: 96eabe7a40aa ("bpf: Allow selecting numa node during map creation")
> Signed-off-by: Saket Kumar Bhaskar <skb99@linux.ibm.com>

Acked-by: Yonghong Song <yonghong.song@linux.dev>
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c b/tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c
index cc184e442..67557cda2 100644
--- a/tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c
+++ b/tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c
@@ -6,6 +6,10 @@ 
 #include <test_progs.h>
 #include "bloom_filter_map.skel.h"
 
+#ifndef NUMA_NO_NODE
+#define NUMA_NO_NODE	(-1)
+#endif
+
 static void test_fail_cases(void)
 {
 	LIBBPF_OPTS(bpf_map_create_opts, opts);
@@ -69,6 +73,7 @@  static void test_success_cases(void)
 
 	/* Create a map */
 	opts.map_flags = BPF_F_ZERO_SEED | BPF_F_NUMA_NODE;
+	opts.numa_node = NUMA_NO_NODE;
 	fd = bpf_map_create(BPF_MAP_TYPE_BLOOM_FILTER, NULL, 0, sizeof(value), 100, &opts);
 	if (!ASSERT_GE(fd, 0, "bpf_map_create bloom filter success case"))
 		return;