From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.74) (envelope-from ) id 1PsYEO-0006K6-0h for ltp-list@lists.sourceforge.net; Thu, 24 Feb 2011 10:15:32 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by sog-mx-4.v43.ch3.sourceforge.com with esmtp (Exim 4.74) id 1PsYEK-0005UB-1L for ltp-list@lists.sourceforge.net; Thu, 24 Feb 2011 10:15:31 +0000 Date: Thu, 24 Feb 2011 18:19:21 +0800 From: Han Pingtian Message-ID: <20110224101921.GA30765@hpt.nay.redhat.com> MIME-Version: 1.0 Content-Disposition: inline Subject: [LTP] [PATCH] basic mlock() testcase from lkml List-Id: Linux Test Project General Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-list-bounces@lists.sourceforge.net To: Garrett Cooper Cc: ltp-list@lists.sourceforge.net This is a reproducer copied from one of LKML patch submission, which subject is [PATCH] mlock: revert the optimization for dirtying pages and triggering writeback. "In 5ecfda0, we do some optimization in mlock, but it causes a very basic test case(attached below) of mlock to fail. So this patch revert it with some tiny modification so that it apply successfully with the lastest 38-rc2 kernel." Signed-off-by: Han Pingtian --- runtest/mm | 1 + testcases/kernel/mem/mlock/Makefile | 23 ++++++++ testcases/kernel/mem/mlock/mlock01.c | 102 ++++++++++++++++++++++++++++++++++ 3 files changed, 126 insertions(+), 0 deletions(-) create mode 100644 testcases/kernel/mem/mlock/Makefile create mode 100644 testcases/kernel/mem/mlock/mlock01.c diff --git a/runtest/mm b/runtest/mm index f097256..1296e59 100644 --- a/runtest/mm +++ b/runtest/mm @@ -76,6 +76,7 @@ hugemmap05_3 hugemmap05 -s -m cpuset01 cpuset01 -I 3600 +mlock01 mlock01 mlock03 mlock03 -i 20 mbind01 mbind01 diff --git a/testcases/kernel/mem/mlock/Makefile b/testcases/kernel/mem/mlock/Makefile new file mode 100644 index 0000000..dbfbc1b --- /dev/null +++ b/testcases/kernel/mem/mlock/Makefile @@ -0,0 +1,23 @@ +# +# Copyright (C) 2010 Red Hat, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or (at +# your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +# 02110-1301, USA. +# + +top_srcdir ?= ../../../.. + +include $(top_srcdir)/include/mk/testcases.mk +include $(top_srcdir)/include/mk/generic_leaf_target.mk diff --git a/testcases/kernel/mem/mlock/mlock01.c b/testcases/kernel/mem/mlock/mlock01.c new file mode 100644 index 0000000..9fe683d --- /dev/null +++ b/testcases/kernel/mem/mlock/mlock01.c @@ -0,0 +1,102 @@ +/* + * This is a reproducer copied from one of LKML patch submission, + * which subject is + * + * [PATCH] mlock: revert the optimization for dirtying pages and triggering writeback. + * + * "In 5ecfda0, we do some optimization in mlock, but it causes + * a very basic test case(attached below) of mlock to fail. So + * this patch revert it with some tiny modification so that it + * apply successfully with the lastest 38-rc2 kernel." + * + * Copyright (C) 2010 Red Hat, Inc. + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Further, this software is distributed without any warranty that it + * is free of the rightful claim of any third person regarding + * infringement or the like. Any license provided herein, whether + * implied or otherwise, applies only to this software file. Patent + * licenses, if any, provided herein do not apply to combinations of + * this program with other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ +#include "test.h" +#include "usctest.h" +#include "config.h" + +char *TCID = "mlock01"; +int TST_TOTAL = 1; + +#include +#include +#include +#include +#include +#include +#include +#include + +static void setup(void) +{ + tst_tmpdir(); + + TEST_PAUSE; +} + +static void cleanup(void) +{ + TEST_CLEANUP; + + tst_rmdir(); +} + +int main(void) +{ + char *buf, *testfile = "test_mmap"; + int fd, file_len = 40960, lc; + + setup(); + + fd = open(testfile, O_CREAT | O_RDWR); + if (fd == -1) + tst_brkm(TBROK|TERRNO, cleanup, "open"); + + if (ftruncate(fd, file_len) == -1) + tst_brkm(TBROK|TERRNO, cleanup, "ftruncate"); + + for (lc = 0; TEST_LOOPING(lc); lc++) { + buf = mmap(NULL, file_len, PROT_WRITE, MAP_SHARED, fd, 0); + + if (buf == MAP_FAILED) + tst_brkm(TBROK|TERRNO, cleanup, "mmap"); + + if (mlock(buf, file_len) == -1) + tst_brkm(TBROK|TERRNO, cleanup, "mlock"); + + tst_resm(TINFO, "locked %d bytes from %p", file_len, buf); + + if (munlock(buf, file_len) == -1) + tst_brkm(TBROK|TERRNO, cleanup, "munlock"); + + if (munmap(buf, file_len) == -1) + tst_brkm(TBROK|TERRNO, cleanup, "munmap"); + } + + tst_resm(TPASS, "mlock01 pass"); + + close(fd); + + cleanup(); + + tst_exit(); +} -- 1.7.1 ------------------------------------------------------------------------------ Free Software Download: Index, Search & Analyze Logs and other IT data in Real-Time with Splunk. 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