From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3B43D3822AD; Mon, 6 Apr 2026 14:21:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775485315; cv=none; b=WHnR+sn7sIHo0+/ULxdp7d0XdiZA+g1UZ2jW0rE0sNwx7W6I/W6YbiW9TJcG/O2VR2QmdckGvvGcZrpHc8KNTPxkapIv/0RunXA9lD2hK9QREVnAqgLGj5oe1eFFJQyd7JhyflbWs49lrJ1JNi+IRNl+6jHlLD1YeP0Gt+Fo4Wo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775485315; c=relaxed/simple; bh=vCnjdXeTkcOgDXKHH4wTrbHB2ThXfy9k351DRlaWe10=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=aKdgwm7KUURuEESlX0I8FVLz0oXddgT/OSLXnMqafGDyGktyGScjWuhnSuiK2Q2GAI+0XckkM3WqHC2v1gxy2DzyvoI/iUiEoYpU1/Gr5ChonwVZMwHXZlsqEPt4mkwVuc2hgyTWptUihYceiADIUb4bY0wHOVusRyeAcTObess= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qz4ev3vM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="qz4ev3vM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D0450C2BCAF; Mon, 6 Apr 2026 14:21:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775485315; bh=vCnjdXeTkcOgDXKHH4wTrbHB2ThXfy9k351DRlaWe10=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qz4ev3vMyNDmP0KmG7lLNnA398L3h6LHlWRGk0c6u8ZflSN0OmjEc8kDVS6idFXjq UzbwnFHPTGjr7GRlO7RyMCKBMNVYo4/0duoqLb5m0yADaGftrIhpwUlkMGF7VYSpIw Vd9cCj1gk5awmow67SpPEsvmFXt0NKzCPzpEvf8FRrgCYMm51lx9GZcaCzQ+0Mg3Hc 17bLZVpV2NixENoYj6g/F7efFEHkcD1TOkLFqBAPWXTKh6Cdbf9yk21k/ttK+qy3HI 7QJRq7Qe8N5M1hNECEkA20Mg1RkFTcP9KWH6AQ4WlAvCtGcZmKR8P8NKYxOmDVrUWm ltJwvx8tz+d+A== From: Mike Rapoport To: Andrew Morton , David Hildenbrand Cc: Baolin Wang , Barry Song , Dev Jain , Jason Gunthorpe , John Hubbard , "Liam R. Howlett" , Lance Yang , Leon Romanovsky , Lorenzo Stoakes , Mark Brown , Michal Hocko , Mike Rapoport , Nico Pache , Peter Xu , Ryan Roberts , Shuah Khan , Suren Baghdasaryan , Vlastimil Babka , Zi Yan , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 43/53] selftests/mm: migration: add setup of HugeTLB pages Date: Mon, 6 Apr 2026 17:17:25 +0300 Message-ID: <20260406141735.2179309-44-rppt@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260406141735.2179309-1-rppt@kernel.org> References: <20260406141735.2179309-1-rppt@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: "Mike Rapoport (Microsoft)" migration skips HugeTLB tests if there are no free huge pages prepared by a wrapper script. Add setup of HugeTLB pages to the test and make sure that the original settings are restored on the test exit. Since kselftest_harness runs fixture setup and the tests in child processes, use HUGETLB_SETUP_DEFAULT_PAGES() that defines a constructor that runs in the main process and add verification that there are enough free huge pages to the tests that use them. Signed-off-by: Mike Rapoport (Microsoft) --- tools/testing/selftests/mm/migration.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/testing/selftests/mm/migration.c b/tools/testing/selftests/mm/migration.c index ccf42002ce86..61fb00953f83 100644 --- a/tools/testing/selftests/mm/migration.c +++ b/tools/testing/selftests/mm/migration.c @@ -23,6 +23,8 @@ #define MAX_RETRIES 100 #define ALIGN(x, a) (((x) + (a - 1)) & (~((a) - 1))) +HUGETLB_SETUP_DEFAULT_PAGES(1) + FIXTURE(migration) { pthread_t *threads; @@ -277,6 +279,9 @@ TEST_F_TIMEOUT(migration, private_anon_htlb, 2*RUNTIME) if (!hugepage_size) SKIP(return, "Reading HugeTLB pagesize failed\n"); + if (hugetlb_free_default_pages() < 1) + SKIP(return, "Not enough huge pages\n"); + ptr = mmap(NULL, hugepage_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, -1, 0); ASSERT_NE(ptr, MAP_FAILED); @@ -308,6 +313,9 @@ TEST_F_TIMEOUT(migration, shared_anon_htlb, 2*RUNTIME) if (!hugepage_size) SKIP(return, "Reading HugeTLB pagesize failed\n"); + if (hugetlb_free_default_pages() < 1) + SKIP(return, "Not enough huge pages\n"); + ptr = mmap(NULL, hugepage_size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS | MAP_HUGETLB, -1, 0); ASSERT_NE(ptr, MAP_FAILED); -- 2.53.0