kernel/tools/testing/selftests/vm, branch linux-4.17.y

selftests: vm: return Kselftest Skip code for skipped tests

2018-08-24T11:06:40Z

[ Upstream commit a4d7537789724985cafbc9260a31ca4f2b7cf123 ] When vm test is skipped because of unmet dependencies and/or unsupported configuration, it exits with error which is treated as a fail by the Kselftest framework. This leads to false negative result even when the test could not be run. Change it to return kselftest skip code when a test gets skipped to clearly report that the test could not be run. Kselftest framework SKIP code is 4 and the framework prints appropriate messages to indicate that the test is skipped. Signed-off-by: Shuah Khan (Samsung OSG) Acked-by: Mike Rapoport Signed-off-by: Shuah Khan (Samsung OSG) Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

selftests/vm/run_vmtests: adjust hugetlb size according to nr_cpus

2018-03-10T00:40:01Z

Fix userfaultfd_hugetlb on hosts which have more than 64 cpus. --------------------------- running userfaultfd_hugetlb --------------------------- invalid MiB Usage: [FAIL] Via userfaultfd.c we can know, hugetlb_size needs to meet hugetlb_size >= nr_cpus * hugepage_size. hugepage_size is often 2M, so when host cpus > 64, it requires more than 128M. [zhijianx.li@intel.com: update changelog/comments and variable name] Link: http://lkml.kernel.org/r/20180302024356.83359-1-zhijianx.li@intel.com Link: http://lkml.kernel.org/r/20180303125027.81638-1-zhijianx.li@intel.com Link: http://lkml.kernel.org/r/20180302024356.83359-1-zhijianx.li@intel.com Signed-off-by: Li Zhijian Cc: Shuah Khan Cc: SeongJae Park Cc: Philippe Ombredanne Cc: Aneesh Kumar K.V Cc: Mike Kravetz Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

selftests: vm: update .gitignore with new test

2018-02-26T23:09:50Z

Update .gitignore with new test. Signed-off-by: Shuah Khan

Merge tag 'linux-kselftest-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

2018-02-03T21:01:19Z

Pull kselftest updates from Shuah Khan: "This update to Kselftest consists of fixes, cleanups, and SPDX license additions" * tag 'linux-kselftest-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests: vm: update .gitignore with missing generated file selftests/x86: Add {,_32,_64} targets selftests: Fix loss of test output in run_kselftests.sh selftest: ftrace: Fix to add 256 kprobe events correctly selftest: ftrace: Fix to pick text symbols for kprobes selftests: media_tests: Add SPDX license identifier selftests: kselftest.h: Add SPDX license identifier selftests: kselftest_install.sh: Add SPDX license identifier selftests: gen_kselftest_tar.h: Add SPDX license identifier selftests: media_tests: Fix Makefile 'clean' target warning tools/testing: Fix trailing semicolon kselftest: fix OOM in memory compaction test selftests: seccomp: fix compile error seccomp_bpf

selftests/vm: move 128TB mmap boundary test to generic directory

2018-02-01T01:18:37Z

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 Cc: "Kirill A . Shutemov" Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Shuah Khan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

selftests: vm: update .gitignore with missing generated file

2018-01-23T14:47:06Z

Add missing generated file to .gitignore. Signed-off-by: Shuah Khan

kselftest: fix OOM in memory compaction test

2018-01-10T15:22:47Z

Running the compaction_test sometimes results in out-of-memory failures. When I debugged this, it turned out that the code to reset the number of hugepages to the initial value is simply broken since we write into an open sysctl file descriptor multiple times without seeking back to the start. Adding the lseek here fixes the problem. Cc: stable@vger.kernel.org Reported-by: Naresh Kamboju Link: https://bugs.linaro.org/show_bug.cgi?id=3145 Signed-off-by: Arnd Bergmann Signed-off-by: Shuah Khan

Merge branch 'akpm' (patches from Andrew)

2017-11-18T00:56:17Z

Merge more updates from Andrew Morton: - a bit more MM - procfs updates - dynamic-debug fixes - lib/ updates - checkpatch - epoll - nilfs2 - signals - rapidio - PID management cleanup and optimization - kcov updates - sysvipc updates - quite a few misc things all over the place * emailed patches from Andrew Morton : (94 commits) EXPERT Kconfig menu: fix broken EXPERT menu include/asm-generic/topology.h: remove unused parent_node() macro arch/tile/include/asm/topology.h: remove unused parent_node() macro arch/sparc/include/asm/topology_64.h: remove unused parent_node() macro arch/sh/include/asm/topology.h: remove unused parent_node() macro arch/ia64/include/asm/topology.h: remove unused parent_node() macro drivers/pcmcia/sa1111_badge4.c: avoid unused function warning mm: add infrastructure for get_user_pages_fast() benchmarking sysvipc: make get_maxid O(1) again sysvipc: properly name ipc_addid() limit parameter sysvipc: duplicate lock comments wrt ipc_addid() sysvipc: unteach ids->next_id for !CHECKPOINT_RESTORE initramfs: use time64_t timestamps drivers/watchdog: make use of devm_register_reboot_notifier() kernel/reboot.c: add devm_register_reboot_notifier() kcov: update documentation Makefile: support flag -fsanitizer-coverage=trace-cmp kcov: support comparison operands collection kcov: remove pointless current != NULL check kernel/panic.c: add TAINT_AUX ...

mm: add infrastructure for get_user_pages_fast() benchmarking

2017-11-18T00:10:04Z

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 Cc: Shuah Khan Cc: Ingo Molnar Cc: Thorsten Leemhuis Cc: Jonathan Corbet Cc: Huang Ying Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

selftests: vm: Update .gitignore with newly added tests

2017-11-15T15:01:42Z

Update .gitignore with newly added tests. Signed-off-by: Shuah Khan