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Mon, 30 Mar 2026 15:16:18 +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-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 88E8F19560AB; Mon, 30 Mar 2026 15:16:09 +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 v7 7/7] selftests/mm: transhuge_stress: skip the test when thp not available Date: Mon, 30 Mar 2026 23:15:03 +0800 Message-ID: <20260330151503.670415-8-chuhu@redhat.com> In-Reply-To: <20260330151503.670415-1-chuhu@redhat.com> References: <20260330151503.670415-1-chuhu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Mimecast-MFC-PROC-ID: LZyO39DdXJeebaMNS5GUsCDkrnBrDgZgcoellGcftxk_1774883779 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: C2D3F14000D X-Stat-Signature: u63dpqgwf6hmro969n8q1hz8z4u3iqh8 X-Rspam-User: X-HE-Tag: 1774883785-127779 X-HE-Meta: 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 UfKczauZ +Sug1wPjetj4sXR8hQE4tPEqCp2ytp9QZQ6r8fhtQbneD3yA0Qil1PXD4e9sBC+c54gHX 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