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Thu, 19 Mar 2026 16:07:54 +0000 (UTC) Received: from dell-per7425-02.rhts.eng.pek2.redhat.com (dell-per7425-02.rhts.eng.pek2.redhat.com [10.73.116.18]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 82A8C30001A1; Thu, 19 Mar 2026 16:07:45 +0000 (UTC) From: Chunyu Hu To: akpm@linux-foundation.org, david@kernel.org, shuah@kernel.org, linux-mm@kvack.org, ljs@kernel.org Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, chuhu@redhat.com, Li Wang Subject: [PATCH v4 5/5] selftests/mm: transhuge_stress: skip the test when thp not available Date: Fri, 20 Mar 2026 00:06:56 +0800 Message-ID: <20260319160656.1480279-6-chuhu@redhat.com> In-Reply-To: <20260319160656.1480279-1-chuhu@redhat.com> References: <20260319160656.1480279-1-chuhu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 X-Mimecast-MFC-PROC-ID: bgAWonkYxus9tOWKV3Mkjo3TonBAkS0yuQ48r_wqUM8_1773936474 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-Stat-Signature: 6n3gmbe4w945zzxonqsoz7qg5apiizeq X-Rspam-User: X-Rspamd-Queue-Id: 70CC240006 X-Rspamd-Server: rspam12 X-HE-Tag: 1773936481-930355 X-HE-Meta: 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 ql5bi5Uq RnfdRMOUoTFDXkGzVRj5n9zfIJDCiECoCG5jdQ9ddyjUe25pPlbPJDVv9wIckWLVHBtFfUGlBgwA2saapKMDTcmqb9lCqB6xdApwUohBGf2kqR7pyptFGMaduqmST7q9qBpjAp5p/CVtAxJejvDJuROCKVnEgefDqVqx6W/56CfUUYtiJNUuS9vCbUMwX3M0u5PvevZSzjbAnOGG8XeqGOGVpK4njkIgyjX+7xrOIzLAVMJYoqseD/EsjvqrEQ2AH4fjZ75JTt1RTFzRzqqD0iPKsXLWiamcU2HnXtWlmlcHV94L+7UqkveJAzUVPiGKSeDL4eG5E9DPXoSARroj8ZuCBvB7J2cv1nTNn1kEtciy/WNMNvGSKD3yhrUCrfQPTGBEk32WQJJdSkeq0A55FBpZArNWLjvugTjTFfe40GuClkh+ots3KN2qgTw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: The test requires thp, skip the test when thp is not available to avoid false positive. Tested with thp disabled kernel. Before the fix: # -------------------------------- # running ./transhuge-stress -d 20 # -------------------------------- # TAP version 13 # 1..1 # transhuge-stress: allocate 1453 transhuge pages, using 2907 MiB virtual memory and 11 MiB of ram # Bail out! MADV_HUGEPAGE# Planned tests != run tests (1 != 0) # # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0 # [FAIL] not ok 60 transhuge-stress -d 20 # exit=1 After the fix: # -------------------------------- # running ./transhuge-stress -d 20 # -------------------------------- # TAP version 13 # 1..0 # SKIP Transparent Hugepages not available # [SKIP] ok 5 transhuge-stress -d 20 # SKIP Acked-by: David Hildenbrand (Arm) Reviewed-by: Mike Rapoport (Microsoft) Reviewed-by: Lorenzo Stoakes (Oracle) Reviewed-by: Zi Yan CC: Li Wang Signed-off-by: Chunyu Hu --- V3 changes: - Add review by from Mike - Add acked-by from David V2 changes: - Move the exit chunk to the front of ksft_print_headers() as suggested by David. - Add reviewed by from Zi and Lorenzo --- tools/testing/selftests/mm/transhuge-stress.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/mm/transhuge-stress.c b/tools/testing/selftests/mm/transhuge-stress.c index bcad47c09518..7a9f1035099b 100644 --- a/tools/testing/selftests/mm/transhuge-stress.c +++ b/tools/testing/selftests/mm/transhuge-stress.c @@ -17,6 +17,7 @@ #include #include "vm_util.h" #include "kselftest.h" +#include "thp_settings.h" int backing_fd = -1; int mmap_flags = MAP_ANONYMOUS | MAP_NORESERVE | MAP_PRIVATE; @@ -37,6 +38,9 @@ int main(int argc, char **argv) ksft_print_header(); + if (!thp_is_enabled()) + ksft_exit_skip("Transparent Hugepages not available\n"); + ram = sysconf(_SC_PHYS_PAGES); if (ram > SIZE_MAX / psize() / 4) ram = SIZE_MAX / 4; -- 2.53.0