kernel/tools/testing/selftests/vm/madv_populate.c, branch linux-6.2.y

selftests/vm: madv_populate: fix missing MADV_POPULATE_(READ|WRITE) definitions

2022-12-12T02:12:20Z

The tests fail to compile in some environments (e.g., Debian 11.5 on x86). Let's simply conditionally define MADV_POPULATE_(READ|WRITE) if not already defined, similar to how the khugepaged.c test handles it. Link: https://lkml.kernel.org/r/20221205193716.276024-3-david@redhat.com Fixes: 39b2e5cae43d ("selftests/vm: make MADV_POPULATE_(READ|WRITE) use in-tree headers") Signed-off-by: David Hildenbrand Cc: Shuah Khan Cc: Yang Li Signed-off-by: Andrew Morton

selftests/vm: factor out pagemap_is_populated() into vm_util

2022-11-09T01:37:14Z

We'll reuse it in the anon_cow test next. Link: https://lkml.kernel.org/r/20220927110120.106906-3-david@redhat.com Signed-off-by: David Hildenbrand Cc: Andrea Arcangeli Cc: Christoph von Recklinghausen Cc: Don Dutile Cc: Jason Gunthorpe Cc: John Hubbard Cc: Mike Rapoport Cc: Nadav Amit Cc: Peter Xu Cc: Shuah Khan Cc: Vlastimil Babka Signed-off-by: Andrew Morton

selftests: vm: bring common functions to a new file

2022-04-29T06:16:11Z

Bring common functions to a new file while keeping code as much same as possible. These functions can be used in the new tests. This helps in avoiding code duplication. Link: https://lkml.kernel.org/r/20220420084036.4101604-1-usama.anjum@collabora.com Signed-off-by: Muhammad Usama Anjum Acked-by: David Hildenbrand Cc: Gabriel Krisman Bertazi Cc: Shuah Khan Cc: Will Deacon Signed-off-by: Andrew Morton

selftests/vm: make MADV_POPULATE_(READ|WRITE) use in-tree headers

2021-11-06T20:30:42Z

The madv_populate selftest currently builds with a warning when the local installed headers (via the distribution) don't include MADV_POPULATE_READ and MADV_POPULATE_WRITE. The warning is correct, because the test cannot locate the necessary header. The reason is that the in-tree installed headers (usr/include) have a "linux" instead of a "sys" subdirectory. Including "linux/mman.h" instead of "sys/mman.h" doesn't work (e.g., mmap() and madvise() are not defined that way). The only thing that seems to work is including "linux/mman.h" in addition to "sys/mman.h". We can get rid of our availability check and simplify. Link: https://lkml.kernel.org/r/20211015165758.41374-1-david@redhat.com Signed-off-by: David Hildenbrand Reported-by: Shuah Khan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

selftests/vm: add test for MADV_POPULATE_(READ|WRITE)

2021-07-01T03:47:31Z

Let's add a simple test for MADV_POPULATE_READ and MADV_POPULATE_WRITE, verifying some error handling, that population works, and that softdirty tracking works as expected. For now, limit the test to private anonymous memory. Link: https://lkml.kernel.org/r/20210419135443.12822-6-david@redhat.com Signed-off-by: David Hildenbrand Cc: Arnd Bergmann Cc: Michal Hocko Cc: Oscar Salvador Cc: Matthew Wilcox (Oracle) Cc: Andrea Arcangeli Cc: Minchan Kim Cc: Jann Horn Cc: Jason Gunthorpe Cc: Dave Hansen Cc: Hugh Dickins Cc: Rik van Riel Cc: Michael S. Tsirkin Cc: Kirill A. Shutemov Cc: Vlastimil Babka Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: Thomas Bogendoerfer Cc: "James E.J. Bottomley" Cc: Helge Deller Cc: Chris Zankel Cc: Max Filippov Cc: Mike Kravetz Cc: Peter Xu Cc: Rolf Eike Beer Cc: Shuah Khan Cc: Ram Pai Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds