linux-kernel - [PATCH bpf-next v3 2/3] selftests: xsk: Use hugepages when umem->frame_size > PAGE

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Message-Id: <20230406130205.49996-3-kal.conley@dectris.com>
Date:   Thu,  6 Apr 2023 15:02:04 +0200
From:   Kal Conley <kal.conley@...tris.com>
To:     Björn Töpel <bjorn@...nel.org>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        Mykola Lysenko <mykolal@...com>, Shuah Khan <shuah@...nel.org>
Cc:     Kal Conley <kal.conley@...tris.com>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH bpf-next v3 2/3] selftests: xsk: Use hugepages when umem->frame_size > PAGE_SIZE

HugeTLB UMEMs now support chunk_size > PAGE_SIZE. Set MAP_HUGETLB when
frame_size > PAGE_SIZE for future tests.

Signed-off-by: Kal Conley <kal.conley@...tris.com>
---
 tools/testing/selftests/bpf/xskxceiver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/xskxceiver.c b/tools/testing/selftests/bpf/xskxceiver.c
index 5a9691e942de..7eccf57a0ccc 100644
--- a/tools/testing/selftests/bpf/xskxceiver.c
+++ b/tools/testing/selftests/bpf/xskxceiver.c
@@ -1289,7 +1289,7 @@ static void thread_common_ops(struct test_spec *test, struct ifobject *ifobject)
 	void *bufs;
 	int ret;
 
-	if (ifobject->umem->unaligned_mode)
+	if (ifobject->umem->frame_size > sysconf(_SC_PAGESIZE) || ifobject->umem->unaligned_mode)
 		mmap_flags |= MAP_HUGETLB;
 
 	if (ifobject->shared_umem)
-- 
2.39.2