From nobody Sun Oct 5 16:14:16 2025 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 07973239E91 for ; Thu, 31 Jul 2025 20:10:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753992623; cv=none; b=U3LZfcK5/LCpTumNefPPzwl7Twj2Hk9WB61p3TUC8QucXeNnb9LzZvhTvvj66Pqwu55PT9lUdYpG4cjf95G6cfcoMB0+VeFHQWQqnrCEaoLsk+LJLpHF0OXGG8y7X/N6zpoERFNv7cdf9DmyzUW+g09li7e2wSDMEQWNUo6QI0o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753992623; c=relaxed/simple; bh=WxHeXqjT8Zn5BVhJpoljQ0LzCywOZf7PcfAXTNZ+ojE=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=rsEHyYKuOlGM/GQueXiSSlfnSctCHJk3ugqD5Hk3TuG3ycTqVkMHyZZklY5e6PrAhb7Mpnrx9W8/Kd7NzgZmfEP+PuI4wuTvasufFQoSQmcYW2mTQkOglhqzVBQUGerbxd/NmE4/VMXd8r0JbC4fONr8q+DQYfqYBv3if7xmKRk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--sudarsanm.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=qh2OlH6R; arc=none smtp.client-ip=209.85.215.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--sudarsanm.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="qh2OlH6R" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-b3928ad6176so1262511a12.3 for ; Thu, 31 Jul 2025 13:10:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1753992621; x=1754597421; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=J09bJnyFyHUEqMAMcKAT+RUtJuszd341ngKo2pBlF9A=; b=qh2OlH6RA3WEFLqgdPIpXXXmlZXu9Ggt4zjXuR+U6ICybIavTyQaH1Bgm3p5uuJYca ysmDfqsa0E6YcGFb00ZPrHButkcWsMoKMc9DN124deKuc18ddi/a9Tc3w0IfK4tDK7Q/ 766YYct1AJ8GU0bqWopxodmSCpD7uczJmrBrLo6Jn7Lnc22SAXPsP5sBmeQTZMl8lUxM 6kRa7aw6pzaWiuDdi/R58fbKl93GQKxWGfAIGz/hKkoJI4xRKh1GKUBzzyzuzIpIhpie U5Ucxg2395uK34ymxMDI3MxiqBW2wzgjUfMPJL8k9Pj7P1Nq5+5DU0kli5IDAcoEnBLt yJQA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753992621; x=1754597421; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=J09bJnyFyHUEqMAMcKAT+RUtJuszd341ngKo2pBlF9A=; b=LgRTG82CfZt/jfOEDhr0gPu25dfXgRJISkzmC/FppTEj0mZv+Q5lFZSOLhLMRF+jxi 04rRDavKWv2vfXEW5Myn+dtr483ewvatcz8LtTckHi4tIX8gxvbJ8yWnGaapb9o3hpSE XNYDQ0o+dqSwuHycMh6HUKFDM/PJhkXuG0ebxlsUdemj4bU7d4hV2Uu3xTIWslf7KOml ruuesTfS+YrFIfWIwsbTzQ4e67CMUfkJSPJi0/pNiSVBAJiAS6IzNLR7t2g+vGEn08Dc zYIJIHYu4fHiP4eYJiO6x6sIohAhfxx4Upn5/gQnwVCDjH+WUfs9FteLMuUxMI75R3uo amgA== X-Forwarded-Encrypted: i=1; AJvYcCVhqyI5RnGniTsztCAa573whYzYyWzlrrkF6zRsAAu/9ViQIKwguxbQY4LPch1r6YgMTXxMVsp8FPAiNMI=@vger.kernel.org X-Gm-Message-State: AOJu0YyBXrayvf9+yQCGDtv3Uc+AxIsaxyJmO1OudqIoNKX07BOiEEHi p4IvA7ibwCBXEEZFEZCWFtzt+2xFl15jO89JdPBC0RfN5PRpWIU3EMXHBp5HlgZWhn3Qgr5x1Yl hPv4BJDsiA7NPqnG0+g== X-Google-Smtp-Source: AGHT+IHgx/cYgrYinezSkOTAmAfU/9csyQH9piPDnBU/wf7uG2ssY6nBUVDU1MMbLwCPMAV4sTmBpXU9mwzHGbM= X-Received: from pgng29.prod.google.com ([2002:a63:375d:0:b0:b31:d832:f7b0]) (user=sudarsanm job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6300:8095:b0:23d:dcb9:d50d with SMTP id adf61e73a8af0-23ddcb9f6dcmr3837708637.25.1753992621200; Thu, 31 Jul 2025 13:10:21 -0700 (PDT) Date: Thu, 31 Jul 2025 13:10:09 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.50.1.565.gc32cd1483b-goog Message-ID: <20250731201009.888945-1-sudarsanm@google.com> Subject: [PATCH] selftests/mm: pass filename as input param to VM_PFNMAP tests From: Sudarsan Mahendran To: linux-kselftest@vger.kernel.org, David Hildenbrand Cc: Shuah Khan , Axel Rasmussen , linux-mm@kvack.org, Andrew Morton , linux-kernel@vger.kernel.org, trivial@kernel.org, Sudarsan Mahendran Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Enable these tests to be run on other pfnmap'ed memory like NVIDIA's EGM. Add '--' as a separator to pass in file path. This allows passing of cmd line arguments to kselftest_harness. Use '/dev/mem' as default filename. Existing test passes: pfnmap TAP version 13 1..6 # Starting 6 tests from 1 test cases. # PASSED: 6 / 6 tests passed. # Totals: pass:6 fail:0 xfail:0 xpass:0 skip:0 error:0 Pass params to kselftest_harness: pfnmap -r pfnmap:mremap_fixed TAP version 13 1..1 # Starting 1 tests from 1 test cases. # RUN pfnmap.mremap_fixed ... # OK pfnmap.mremap_fixed ok 1 pfnmap.mremap_fixed # PASSED: 1 / 1 tests passed. # Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0 Pass random file name as input: pfnmap -- /dev/blah TAP version 13 1..6 # Starting 6 tests from 1 test cases. # RUN pfnmap.madvise_disallowed ... # SKIP Cannot open '/dev/blah' Signed-off-by: Sudarsan Mahendran --- tools/testing/selftests/mm/pfnmap.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/mm/pfnmap.c b/tools/testing/selftests/= mm/pfnmap.c index 866ac023baf5..2d4e8b165f91 100644 --- a/tools/testing/selftests/mm/pfnmap.c +++ b/tools/testing/selftests/mm/pfnmap.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * Basic VM_PFNMAP tests relying on mmap() of '/dev/mem' + * Basic VM_PFNMAP tests relying on mmap() of input file provided. + * Use '/dev/mem' as default. * * Copyright 2025, Red Hat, Inc. * @@ -25,6 +26,7 @@ #include "vm_util.h" =20 static sigjmp_buf sigjmp_buf_env; +static char *file =3D "/dev/mem"; =20 static void signal_handler(int sig) { @@ -117,19 +119,19 @@ FIXTURE_SETUP(pfnmap) if (find_ram_target(&self->phys_addr, self->pagesize)) SKIP(return, "Cannot find ram target in '/proc/iomem'\n"); =20 - self->dev_mem_fd =3D open("/dev/mem", O_RDONLY); + self->dev_mem_fd =3D open(file, O_RDONLY); if (self->dev_mem_fd < 0) - SKIP(return, "Cannot open '/dev/mem'\n"); + SKIP(return, "Cannot open '%s'\n", file); =20 self->size1 =3D self->pagesize * 2; self->addr1 =3D mmap(NULL, self->size1, PROT_READ, MAP_SHARED, self->dev_mem_fd, self->phys_addr); if (self->addr1 =3D=3D MAP_FAILED) - SKIP(return, "Cannot mmap '/dev/mem'\n"); + SKIP(return, "Cannot mmap '%s'\n", file); =20 /* ... and want to be able to read from them. */ if (test_read_access(self->addr1, self->size1, self->pagesize)) - SKIP(return, "Cannot read-access mmap'ed '/dev/mem'\n"); + SKIP(return, "Cannot read-access mmap'ed '%s'\n", file); =20 self->size2 =3D 0; self->addr2 =3D MAP_FAILED; @@ -246,4 +248,14 @@ TEST_F(pfnmap, fork) ASSERT_EQ(ret, 0); } =20 -TEST_HARNESS_MAIN +int main(int argc, char **argv) +{ + for (int i =3D 1; i < argc; i++) { + if (strcmp(argv[i], "--") =3D=3D 0) { + if (i + 1 < argc && strlen(argv[i + 1]) > 0) + file =3D argv[i + 1]; + return test_harness_run(i, argv); + } + } + return test_harness_run(argc, argv); +} --=20 2.50.1.565.gc32cd1483b-goog