kernel/linux.git/tools/testing/selftests/vm/config, branch v6.1.168

selftests: vm: add test for Soft-Dirty PTE bit

2022-04-29T06:16:11+00:00

This introduces three tests: 1) Sanity check soft dirty basic semantics: allocate area, clean, dirty, check if the SD bit is flipped. 2) Check VMA reuse: validate the VM_SOFTDIRTY usage 3) Check soft-dirty on huge pages This was motivated by Will Deacon's fix commit 912efa17e512 ("mm: proc: Invalidate TLB after clearing soft-dirty page state"). I was tracking the same issue that he fixed, and this test would have caught it. Link: https://lkml.kernel.org/r/20220420084036.4101604-2-usama.anjum@collabora.com Signed-off-by: Gabriel Krisman Bertazi Signed-off-by: Muhammad Usama Anjum Co-developed-by: Muhammad Usama Anjum Cc: Will Deacon Cc: Shuah Khan Signed-off-by: Andrew Morton

mm/gup_benchmark: rename to mm/gup_test

2020-12-15T20:13:38+00:00

Patch series "selftests/vm: gup_test, hmm-tests, assorted improvements", v3. Summary: This series provides two main things, and a number of smaller supporting goodies. The two main points are: 1) Add a new sub-test to gup_test, which in turn is a renamed version of gup_benchmark. This sub-test allows nicer testing of dump_pages(), at least on user-space pages. For quite a while, I was doing a quick hack to gup_test.c whenever I wanted to try out changes to dump_page(). Then Matthew Wilcox asked me what I meant when I said "I used my dump_page() unit test", and I realized that it might be nice to check in a polished up version of that. Details about how it works and how to use it are in the commit description for patch #6 ("selftests/vm: gup_test: introduce the dump_pages() sub-test"). 2) Fixes a limitation of hmm-tests: these tests are incredibly useful, but only if people actually build and run them. And it turns out that libhugetlbfs is a little too effective at throwing a wrench in the works, there. So I've added a little configuration check that removes just two of the 21 hmm-tests, if libhugetlbfs is not available. Further details in the commit description of patch #8 ("selftests/vm: hmm-tests: remove the libhugetlbfs dependency"). Other smaller things that this series does: a) Remove code duplication by creating gup_test.h. b) Clear up the sub-test organization, and their invocation within run_vmtests.sh. c) Other minor assorted improvements. [1] v2 is here: https://lore.kernel.org/linux-doc/20200929212747.251804-1-jhubbard@nvidia.com/ [2] https://lore.kernel.org/r/CAHk-=wgh-TMPHLY3jueHX7Y2fWh3D+nMBqVS__AZm6-oorquWA@mail.gmail.com This patch (of 9): Rename nearly every "gup_benchmark" reference and file name to "gup_test". The one exception is for the actual gup benchmark test itself. The current code already does a *little* bit more than benchmarking, and definitely covers more than get_user_pages_fast(). More importantly, however, subsequent patches are about to add some functionality that is non-benchmark related. Closely related changes: * Kconfig: in addition to renaming the options from GUP_BENCHMARK to GUP_TEST, update the help text to reflect that it's no longer a benchmark-only test. Link: https://lkml.kernel.org/r/20201026064021.3545418-1-jhubbard@nvidia.com Link: https://lkml.kernel.org/r/20201026064021.3545418-2-jhubbard@nvidia.com Signed-off-by: John Hubbard Cc: Jonathan Corbet Cc: Jérôme Glisse Cc: Ralph Campbell Cc: Shuah Khan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

selftests: vm: add fragment CONFIG_GUP_BENCHMARK

2020-09-01T12:29:20+00:00

When running gup_benchmark test the following output states that the config options is missing. $ sudo ./gup_benchmark open: No such file or directory $ sudo strace -e trace=file ./gup_benchmark 2>&1 | tail -3 openat(AT_FDCWD, "/sys/kernel/debug/gup_benchmark", O_RDWR) = -1 ENOENT (No such file or directory) open: No such file or directory +++ exited with 1 +++ Fix it by adding config option fragment. Fixes: 64c349f4ae78 ("mm: add infrastructure for get_user_pages_fast() benchmarking") Signed-off-by: Anatoly Pugachev CC: Jiri Kosina CC: Shuah Khan Signed-off-by: Jiri Kosina

mm/hmm/test: add selftests for HMM

2020-05-19T19:48:31+00:00

Add some basic stand alone self tests for HMM. The test program and shell scripts use the test_hmm.ko driver to exercise HMM functionality in the kernel. Link: https://lore.kernel.org/r/20200422195028.3684-3-rcampbell@nvidia.com Signed-off-by: Ralph Campbell Signed-off-by: Jason Gunthorpe

selftests: vm: add fragment CONFIG_TEST_VMALLOC

2019-12-01T20:59:05+00:00

When running test_vmalloc.sh smoke the following print out states that the fragment is missing. # ./test_vmalloc.sh: You must have the following enabled in your kernel: # CONFIG_TEST_VMALLOC=m Rework to add the fragment 'CONFIG_TEST_VMALLOC=m' to the config file. Link: http://lkml.kernel.org/r/20190916095217.19665-1-anders.roxell@linaro.org Fixes: a05ef00c9790 ("selftests/vm: add script helper for CONFIG_TEST_VMALLOC_MODULE") Signed-off-by: Anders Roxell Cc: Shuah Khan Cc: "Uladzislau Rezki (Sony)" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

selftests: vm: add CONFIG_SYSVIPC=y to the config fragment

2017-04-11T15:38:39+00:00

vm tests rely on shared memory settings. Enable system V IPC to run these tests. Signed-off-by: Fathi Boudra Tested-by: Naresh Kamboju Signed-off-by: Shuah Khan

selftests: create test-specific kconfig fragments

2016-02-25T16:47:52+00:00

Create the config file in each directory of testcase which need more kernel configuration than the default defconfig. User could use these configs with merge_config.sh script: Enable config for specific testcase: (export ARCH=xxx #for cross compiling) ./scripts/kconfig/merge_config.sh .config \ tools/testing/selftests/xxx/config Enable configs for all testcases: (export ARCH=xxx #for cross compiling) ./scripts/kconfig/merge_config.sh .config \ tools/testing/selftests/*/config Signed-off-by: Bamvor Jian Zhang Reviewed-by: Shuah Khan Signed-off-by: Shuah Khan