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* selftests: vm: Build/Run 64bit tests only on 64bit archMasami Hiramatsu2019-11-071-0/+5
| | | | | | | | | | | | | Some virtual address range tests requires 64bit address space, and we can not build and run those tests on the 32bit machine. Filter the 64bit architectures in Makefile and run_vmtests, so that those tests are built/run only on 64bit archs. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
* selftests: vm: Fix test build failure when built by itselfShuah Khan2019-06-051-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | vm test build fails when test is built by itself using make -C tools/testing/selftests/vm or cd tools/testing/selftests/vm; make When the test is built invoking its Makefile directly, it defines OUTPUT which conflicts with lib.mk's logic to install headers. make --no-builtin-rules INSTALL_HDR_PATH=$OUTPUT/usr \ ARCH=x86 -C ../../../.. headers_install make[1]: Entering directory '/mnt/data/lkml/linux_5.2' REMOVE shmparam.h rm: cannot remove '/usr/include/asm-generic/shmparam.h': Permission denied scripts/Makefile.headersinst:96: recipe for target '/usr/include/asm-generic/.install' failed make[3]: *** [/usr/include/asm-generic/.install] Error 1 scripts/Makefile.headersinst:32: recipe for target 'asm-generic' failed make[2]: *** [asm-generic] Error 2 Makefile:1199: recipe for target 'headers_install' failed make[1]: *** [headers_install] Error 2 make[1]: Leaving directory '/mnt/data/lkml/linux_5.2' ../lib.mk:52: recipe for target 'khdr' failed make: *** [khdr] Error 2 Fixes: 8ce72dc32578 ("selftests: fix headers_install circular dependency") Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
* selftests: vm: install test_vmalloc.sh for run_vmtestsNaresh Kamboju2019-05-301-0/+2
| | | | | | | | | | | | | Add test_vmalloc.sh to TEST_FILES to make sure it gets installed for run_vmtests. Fixed below error: ./run_vmtests: line 217: ./test_vmalloc.sh: No such file or directory Tested with: make TARGETS=vm install INSTALL_PATH=$PWD/x Signed-off-by: Naresh Kamboju <naresh.kamboju@linaro.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
* selftests: Fix test errors related to lib.mk khdr targetShuah Khan2018-12-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit b2d35fa5fc80 ("selftests: add headers_install to lib.mk") added khdr target to run headers_install target from the main Makefile. The logic uses KSFT_KHDR_INSTALL and top_srcdir as controls to initialize variables and include files to run headers_install from the top level Makefile. There are a few problems with this logic. 1. Exposes top_srcdir to all tests 2. Common logic impacts all tests 3. Uses KSFT_KHDR_INSTALL, top_srcdir, and khdr in an adhoc way. Tests add "khdr" dependency in their Makefiles to TEST_PROGS_EXTENDED in some cases, and STATIC_LIBS in other cases. This makes this framework confusing to use. The common logic that runs for all tests even when KSFT_KHDR_INSTALL isn't defined by the test. top_srcdir is initialized to a default value when test doesn't initialize it. It works for all tests without a sub-dir structure and tests with sub-dir structure fail to build. e.g: make -C sparc64/drivers/ or make -C drivers/dma-buf ../../lib.mk:20: ../../../../scripts/subarch.include: No such file or directory make: *** No rule to make target '../../../../scripts/subarch.include'. Stop. There is no reason to require all tests to define top_srcdir and there is no need to require tests to add khdr dependency using adhoc changes to TEST_* and other variables. Fix it with a consistent use of KSFT_KHDR_INSTALL and top_srcdir from tests that have the dependency on headers_install. Change common logic to include khdr target define and "all" target with dependency on khdr when KSFT_KHDR_INSTALL is defined. Only tests that have dependency on headers_install have to define just the KSFT_KHDR_INSTALL, and top_srcdir variables and there is no need to specify khdr dependency in the test Makefiles. Fixes: b2d35fa5fc80 ("selftests: add headers_install to lib.mk") Cc: stable@vger.kernel.org Signed-off-by: Shuah Khan <shuah@kernel.org>
* tools/testing/selftests/vm/map_fixed_noreplace.c: add test for ↵Michael Ellerman2018-10-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MAP_FIXED_NOREPLACE Add a test for MAP_FIXED_NOREPLACE, based on some code originally by Jann Horn. This would have caught the overlap bug reported by Daniel Micay. I originally suggested to Michal that we create MAP_FIXED_NOREPLACE, but instead of writing a selftest I spent my time bike-shedding whether it should be called MAP_FIXED_SAFE/NOCLOBBER/WEAK/NEW .. mea culpa. Link: http://lkml.kernel.org/r/20181013133929.28653-1-mpe@ellerman.id.au Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Jann Horn <jannh@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com> Cc: Joel Stanley <joel@jms.id.au> Cc: Jason Evans <jasone@google.com> Cc: David Goldblatt <davidtgoldblatt@gmail.com> Cc: Daniel Micay <danielmicay@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* selftests: add headers_install to lib.mkAnders Roxell2018-09-051-4/+0
| | | | | | | | | | | | | If the kernel headers aren't installed we can't build all the tests. Add a new make target rule 'khdr' in the file lib.mk to generate the kernel headers and that gets include for every test-dir Makefile that includes lib.mk If the testdir in turn have its own sub-dirs the top_srcdir needs to be set to the linux-rootdir to be able to generate the kernel headers. Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Reviewed-by: Fathi Boudra <fathi.boudra@linaro.org> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
* tools/testing/selftests/vm/: add MAP_POPULATE testDmitry Safonov2018-08-221-0/+1
| | | | | | | | | | | | | | | | | | As with many other projects, we use some shmalloc allocator. At some point we need to make a part of allocated pages back private to process. And it should be populated straight away. Check that (MAP_PRIVATE | MAP_POPULATE) actually copies the private page. [akpm@linux-foundation.org: change message, per review discussion] Link: http://lkml.kernel.org/r/20180801233636.29354-1-dima@arista.com Signed-off-by: Dmitry Safonov <dima@arista.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Hua Zhong <hzhong@arista.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Stuart Ritchie <sritchie@arista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* selftests/vm: move 128TB mmap boundary test to generic directoryAneesh Kumar K.V2018-01-311-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Architectures like PPC64 support mmap hint address based large address space selection. This test can be run on those architectures too. Move the test from the x86 selftests to selftest/vm so that other architectures can use it too. We also add a few new test scenarios in this patch. We do test a few boundary conditions before we do a high address mmap. PPC64 uses the address limit to validate the address in the fault path. We had bugs in this area w.r.t SLB fault handling before we updated the addess limit. We also touch the allocated space to make sure we don't have any bugs in the fault handling path. [akpm@linux-foundation.org: restore tools/testing/selftests/vm/Makefile alpha ordering] Link: http://lkml.kernel.org/r/20171123165226.32582-1-aneesh.kumar@linux.vnet.ibm.com Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: add infrastructure for get_user_pages_fast() benchmarkingKirill A. Shutemov2017-11-171-0/+1
| | | | | | | | | | | | | | | | | | | | | Performance of get_user_pages_fast() is critical for some workloads, but it's tricky to test it directly. This patch provides /sys/kernel/debug/gup_benchmark that helps with testing performance of it. See tools/testing/selftests/vm/gup_benchmark.c for userspace counterpart. Link: http://lkml.kernel.org/r/20170908215603.9189-2-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thorsten Leemhuis <regressions@leemhuis.info> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Huang Ying <ying.huang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman2017-11-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* selftests/vm: add a test for virtual address range mappingAnshuman Khandual2017-05-081-0/+1
| | | | | | | | | | | | | | This verifies virtual address mapping below and above the 128TB range and makes sure that address returned are within the expected range depending upon the hint passed from the user space. Link: http://lkml.kernel.org/r/20170418095252.20533-1-khandual@linux.vnet.ibm.com Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* userfaultfd: selftest: combine all cases into a single executableMike Rapoport2017-05-031-9/+2
| | | | | | | | | | | | | | | Currently, selftest for userfaultfd is compiled three times: for anonymous, shared and hugetlb memory. Let's combine all the cases into a single executable which will have a command line option for selection of the test type. Link: http://lkml.kernel.org/r/1490869741-5913-1-git-send-email-rppt@linux.vnet.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* userfaultfd: selftest: vm: allow to build in vm/ directoryAndrea Arcangeli2017-03-091-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | linux/tools/testing/selftests/vm $ make gcc -Wall -I ../../../../usr/include compaction_test.c -lrt -o /compaction_test /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.4/../../../../x86_64-pc-linux-gnu/bin/ld: cannot open output file /compaction_test: Permission denied collect2: error: ld returned 1 exit status make: *** [../lib.mk:54: /compaction_test] Error 1 Since commit a8ba798bc8ec ("selftests: enable O and KBUILD_OUTPUT") selftests/vm build fails if run from the "selftests/vm" directory, but it works in the selftests/ directory. It's quicker to be able to do a local vm-only build after a tree wipe and this patch allows for it again. Link: http://lkml.kernel.org/r/20170302173738.18994-4-aarcange@redhat.com Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'linux-kselftest-4.11-rc1' of ↵Linus Torvalds2017-02-251-31/+23
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest update from Shuah Khan: "This update consists of: - fixes to several existing tests from Stafford Horne - cpufreq tests from Viresh Kumar - Selftest build and install fixes from Bamvor Jian Zhang and Michael Ellerman - Fixes to protection-keys tests from Dave Hansen - Warning fixes from Shuah Khan" * tag 'linux-kselftest-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (28 commits) selftests/powerpc: Fix remaining fallout from recent changes selftests/powerpc: Fix the clean rule since recent changes selftests: Fix the .S and .S -> .o rules selftests: Fix the .c linking rule selftests: Fix selftests build to just build, not run tests selftests, x86, protection_keys: fix wrong offset in siginfo selftests, x86, protection_keys: fix uninitialized variable warning selftest: cpufreq: Update MAINTAINERS file selftest: cpufreq: Add special tests selftest: cpufreq: Add support to test cpufreq modules selftest: cpufreq: Add suspend/resume/hibernate support selftest: cpufreq: Add support for cpufreq tests selftests: Add intel_pstate to TARGETS selftests/intel_pstate: Update makefile to match new style selftests/intel_pstate: Fix warning on loop index overflow cpupower: Restore format of frequency-info limit selftests/futex: Add headers to makefile dependencies selftests/futex: Add stdio used for logging selftests: x86 protection_keys remove dead code selftests: x86 protection_keys fix unused variable compile warnings ...
| * selftests: enable O and KBUILD_OUTPUTbamvor.zhangjian@huawei.com2017-01-051-2/+2
| | | | | | | | | | | | | | | | | | Enable O and KBUILD_OUTPUT for kselftest. User could compile kselftest to another directory by passing O or KBUILD_OUTPUT. And O is high priority than KBUILD_OUTPUT. Signed-off-by: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
| * selftests: add default rules for c source filebamvor.zhangjian@huawei.com2017-01-051-11/+6
| | | | | | | | | | | | | | | | | | | | | | | | There are difference rules for compiling c source file in different testcases. In order to enable KBUILD_OUTPUT support in later patch, this patch introduce the default rules in "tools/testing/selftest/lib.mk" and remove the existing rules in each testcase. Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
| * selftests: remove duplicated all and clean targetbamvor.zhangjian@huawei.com2017-01-051-14/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, kselftest use TEST_PROGS, TEST_PROGS_EXTENDED, TEST_FILES to indicate the test program, extended test program and test files. It is easy to understand the purpose of these files. But mix of compiled and uncompiled files lead to duplicated "all" and "clean" targets. In order to remove the duplicated targets, introduce TEST_GEN_PROGS, TEST_GEN_PROGS_EXTENDED, TEST_GEN_FILES to indicate the compiled objects. Also, the later patch will make use of TEST_GEN_XXX to redirect these files to output directory indicated by KBUILD_OUTPUT or O. And add this changes to "Contributing new tests(details)" of Documentation/kselftest.txt. Signed-off-by: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
* | userfaultfd: shmem: add userfaultfd_shmem testMike Rapoport2017-02-221-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The test verifies that anonymous shared mapping can be used with userfault using the existing testing method. The shared memory area is allocated using mmap(..., MAP_SHARED | MAP_ANONYMOUS, ...) and released using madvise(MADV_REMOVE) Link: http://lkml.kernel.org/r/20161216144821.5183-35-aarcange@redhat.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | userfaultfd: hugetlbfs: add userfaultfd_hugetlb testMike Kravetz2017-02-221-0/+4
|/ | | | | | | | | | | | | | | | | | | | | | | Test userfaultfd hugetlb functionality by using the existing testing method (in userfaultfd.c). Instead of an anonymous memeory, a hugetlbfs file is mmap'ed private. In this way fallocate hole punch can be used to release pages. This is because madvise(MADV_DONTNEED) is not supported for huge pages. Use the same file, but create wrappers for allocating ranges and releasing pages. Compile userfaultfd.c with HUGETLB_TEST defined to produce an executable to test userfaultfd hugetlb functionality. Link: http://lkml.kernel.org/r/20161216144821.5183-23-aarcange@redhat.com Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* selftests: expanding more mlock selftestSimon Guo2016-10-071-2/+2
| | | | | | | | | | | | | | | | | | | | | | | This patch will randomly perform mlock/mlock2 on a given memory region, and verify the RLIMIT_MEMLOCK limitation works properly. Suggested-by: David Rientjes <rientjes@google.com> Link: http://lkml.kernel.org/r/1473325970-11393-4-git-send-email-wei.guo.simon@gmail.com Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Eric B Munson <emunson@akamai.com> Cc: Simon Guo <wei.guo.simon@gmail.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Alexey Klimov <klimov.linux@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Thierry Reding <treding@nvidia.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* selftests/vm: add test for mlock() when areas are intersectedSimon Guo2016-10-071-0/+4
| | | | | | | | | | | | | | | | | | | | | This patch adds mlock() test for multiple invocation on the same address area, and verify it doesn't mess the rlimit mlock limitation. Link: http://lkml.kernel.org/r/1472554781-9835-5-git-send-email-wei.guo.simon@gmail.com Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Cc: Alexey Klimov <klimov.linux@gmail.com> Cc: Eric B Munson <emunson@akamai.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Michal Hocko <mhocko@suse.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Simon Guo <wei.guo.simon@gmail.com> Cc: Thierry Reding <treding@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* selftests: vm: add tests for lock on faultEric B Munson2015-11-051-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Test the mmap() flag, and the mlockall() flag. These tests ensure that pages are not faulted in until they are accessed, that the pages are unevictable once faulted in, and that VMA splitting and merging works with the new VM flag. The second test ensures that mlock limits are respected. Note that the limit test needs to be run a normal user. Also add tests to use the new mlock2 family of system calls. [treding@nvidia.com: : Fix mlock2-tests for 32-bit architectures] [treding@nvidia.com: ensure the mlock2 syscall number can be found] [treding@nvidia.com: use the right arguments for main()] Signed-off-by: Eric B Munson <emunson@akamai.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* userfaultfd: selftest: headers fixupAndrea Arcangeli2015-09-221-2/+5
| | | | | | | | | | | | | Depend on "make headers_install" to create proper headers to include and provide syscall numbers. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Thierry Reding <treding@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* userfaultfd: selftests: vm: pick up sanitized kernel headersThierry Reding2015-09-221-1/+1
| | | | | | | | | | | | | | | | | | | Add the usr/include subdirectory of the top-level tree to the include path, and make sure to include headers without relative paths to make sure the sanitized headers get picked up. Otherwise the compiler will not be able to find the linux/compiler.h header included by the non- sanitized include/uapi/linux/userfaultfd.h. While at it, make sure to only hardcode the syscall numbers on x86 and PowerPC if they haven't been properly picked up from the headers. Signed-off-by: Thierry Reding <treding@nvidia.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Revert "selftests: add hugetlbfstest"Mike Kravetz2015-09-081-1/+0
| | | | | | | | | | | | | | | | | This manually reverts 7e50533d4b842 ("selftests: add hugetlbfstest"). The hugetlbfstest test depends on hugetlb pages being counted in a task's rss. This functionality is not in the kernel, so the test will always fail. Remove test to avoid confusion. Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Joern Engel <joern@logfs.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: David Rientjes <rientjes@google.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* userfaultfd: selftestAndrea Arcangeli2015-09-041-0/+3
| | | | | | | | | | | | | | This test allocates two virtual areas and bounces the physical memory across the two virtual areas using only userfaultfd. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Shuah Khan <shuah.kh@samsung.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Test compaction of mlocked memorySri Jayaramappa2015-05-261-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit commit 5bbe3547aa3b ("mm: allow compaction of unevictable pages") introduced a sysctl that allows userspace to enable scanning of locked pages for compaction. This patch introduces a new test which fragments main memory and attempts to allocate a number of huge pages to exercise this compaction logic. Tested on machines with up to 32 GB RAM. With the patch a much larger number of huge pages can be allocated than on the kernel without the patch. Example output: On a machine with 16 GB RAM: sudo make run_tests vm ... ----------------------- running compaction_test ----------------------- No of huge pages allocated = 3834 [PASS] ... Signed-off-by: Sri Jayaramappa <sjayaram@akamai.com> Cc: linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Eric B Munson <emunson@akamai.com> Reviewed-by: Eric B Munson <emunson@akamai.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
* selftests: Set CC using CROSS_COMPILE once in lib.mkMichael Ellerman2015-03-191-1/+0
| | | | | | | | This avoids repeating the logic in every Makefile. We mimic the top-level Makefile and use $(CROSS_COMPILE)gcc. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
* selftests: Add install targetMichael Ellerman2015-03-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | This adds make install support to selftests. The basic usage is: $ cd tools/testing/selftests $ make install That installs into tools/testing/selftests/install, which can then be copied where ever necessary. The install destination is also configurable using eg: $ INSTALL_PATH=/mnt/selftests make install The implementation uses two targets in the child makefiles. The first "install" is expected to install all files into $(INSTALL_PATH). The second, "emit_tests", is expected to emit the test instructions (ie. bash script) on stdout. Separating this from install means the child makefiles need no knowledge of the location of the test script. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
* selftests: Introduce minimal shared logic for running testsMichael Ellerman2015-03-131-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | This adds a Make include file which most selftests can then include to get the run_tests logic. On its own this has the advantage of some reduction in repetition, and also means the pass/fail message is defined in fewer places. However the key advantage is it will allow us to implement install very simply in a subsequent patch. The default implementation just executes each program in $(TEST_PROGS). We use a variable to hold the default implementation of $(RUN_TESTS) because that gives us a clean way to override it if necessary, ie. using override. The mount, memory-hotplug and mqueue tests use that to provide a different implementation. Tests are not run via /bin/bash, so if they are scripts they must be executable, we add a+x to several. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
* selftests/vm: fix link error for transhuge-stress testAndrey Skvortsov2015-01-081-1/+1
| | | | | | | | add -lrt to fix undefined reference to `clock_gettime' error seen when the test is compiled using gcc 4.6.4. Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
* selftests/vm/transhuge-stress: stress test for memory compactionKonstantin Khlebnikov2014-10-091-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This tool induces memory fragmentation via sequential allocation of transparent huge pages and splitting off everything except their last sub-pages. It easily generates pressure to the memory compaction code. $ perf stat -e 'compaction:*' -e 'migrate:*' ./transhuge-stress transhuge-stress: allocate 7858 transhuge pages, using 15716 MiB virtual memory and 61 MiB of ram transhuge-stress: 1.653 s/loop, 0.210 ms/page, 9504.828 MiB/s 7858 succeed, 0 failed, 2439 different pages transhuge-stress: 1.537 s/loop, 0.196 ms/page, 10226.227 MiB/s 7858 succeed, 0 failed, 2364 different pages transhuge-stress: 1.658 s/loop, 0.211 ms/page, 9479.215 MiB/s 7858 succeed, 0 failed, 2179 different pages transhuge-stress: 1.617 s/loop, 0.206 ms/page, 9716.992 MiB/s 7858 succeed, 0 failed, 2421 different pages ^C./transhuge-stress: Interrupt Performance counter stats for './transhuge-stress': 1.744.051 compaction:mm_compaction_isolate_migratepages 1.014 compaction:mm_compaction_isolate_freepages 1.744.051 compaction:mm_compaction_migratepages 1.647 compaction:mm_compaction_begin 1.647 compaction:mm_compaction_end 1.744.051 migrate:mm_migrate_pages 0 migrate:mm_numa_migrate_ratelimit 7,964696835 seconds time elapsed Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Rafael Aquini <aquini@redhat.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* selftests: add hugetlbfstestJoern Engel2013-07-031-1/+1
| | | | | | | | | | As the confusing naming indicates, this test has some overlap with pre-existing tests. Would be nice to merge them eventually. But since it is only test code, cleanliness is much less important than mere existence. Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* self-test: fix make cleanJoern Engel2013-07-031-2/+3
| | | | | | | | | thuge-gen was forgotten. Fix it by removing the duplication, so we don't get too many repeats. Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* selftests: exit 1 on failureJoern Engel2013-07-031-1/+1
| | | | | | | | | In case this ever gets scripted, it should return 0 on success and 1 on failure. Parsing the output should be left to meatbags. Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* vm selftests: print failure status instead of cause make errorDave Young2012-12-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Original behavior: bash-4.1$ make -C vm run_tests make: Entering directory `/home/dave/git/linux-2.6/tools/testing/selftests/vm' /bin/sh ./run_vmtests ./run_vmtests: line 24: /proc/sys/vm/nr_hugepages: Permission denied Please run this test as root make: *** [run_tests] Error 1 make: Leaving directory `/home/dave/git/linux-2.6/tools/testing/selftests/vm' After applying the patch: bash-4.1$ make -C vm run_tests make: Entering directory `/home/dave/git/linux-2.6/tools/testing/selftests/vm' ./run_vmtests: line 24: /proc/sys/vm/nr_hugepages: Permission denied Please run this test as root vmtests: [FAIL] make: Leaving directory `/home/dave/git/linux-2.6/tools/testing/selftests/vm' Signed-off-by: Dave Young <dyoung@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* selftests: add a test program for variable huge page sizes in mmap/shmgetAndi Kleen2012-12-111-2/+2
| | | | | | | | | Also remove -Wextra because gcc-4.6 emits lots of irritating signed/unsigned comparison warnings. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: move hugepage test examples to tools/testing/selftests/vmDave Young2012-03-281-0/+14
hugepage-mmap.c, hugepage-shm.c and map_hugetlb.c in Documentation/vm are simple pass/fail tests, It's better to promote them to tools/testing/selftests. Thanks suggestion of Andrew Morton about this. They all need firstly setting up proper nr_hugepages and hugepage-mmap need to mount hugetlbfs. So I add a shell script run_vmtests to do such work which will call the three test programs and check the return value of them. Changes to original code including below: a. add run_vmtests script b. return error when read_bytes mismatch with writed bytes. c. coding style fixes: do not use assignment in if condition [akpm@linux-foundation.org: build the targets before trying to execute them] [akpm@linux-foundation.org: Documentation/vm/ no longer has a Makefile. Fixes "make clean"] Signed-off-by: Dave Young <dyoung@redhat.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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