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authorZach O'Keefe <zokeefe@google.com>2022-09-22 15:40:41 -0700
committerAndrew Morton <akpm@linux-foundation.org>2022-10-03 14:03:34 -0700
commitc07c343cda8ef02985ac6583a2e5af892726f734 (patch)
tree53ab9c7294726cf8bcfa823bca2e24242a86bbac /tools/testing/selftests/vm/Makefile
parentd41fd2016ed07a630da2817b76c98eeab7931e1e (diff)
selftests/vm: dedup THP helpers
These files: tools/testing/selftests/vm/vm_util.c tools/testing/selftests/vm/khugepaged.c Both contain logic to: 1) Determine hugepage size on current system 2) Read /proc/self/smaps to determine number of THPs at an address Refactor selftests/vm/khugepaged.c to use the vm_util common helpers and add it as a build dependency. Since selftests/vm/khugepaged.c is the largest user of check_huge(), change the signature of check_huge() to match selftests/vm/khugepaged.c's useage: take an expected number of hugepages, and return a bool indicating if the correct number of hugepages were found. Add a wrapper, check_huge_anon(), in anticipation of checking smaps for file and shmem hugepages. Update existing callsites to use the new pattern / function. Likewise, check_for_pattern() was duplicated, and it's a general enough helper to include in vm_util helpers as well. Link: https://lkml.kernel.org/r/20220907144521.3115321-6-zokeefe@google.com Link: https://lkml.kernel.org/r/20220922224046.1143204-6-zokeefe@google.com Signed-off-by: Zach O'Keefe <zokeefe@google.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Chris Kennelly <ckennelly@google.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: James Houghton <jthoughton@google.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Xu <peterx@redhat.com> Cc: Rongwei Wang <rongwei.wang@linux.alibaba.com> Cc: SeongJae Park <sj@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <shy828301@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/vm/Makefile')
-rw-r--r--tools/testing/selftests/vm/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile
index 4ae879f70f4c..c9c0996c122b 100644
--- a/tools/testing/selftests/vm/Makefile
+++ b/tools/testing/selftests/vm/Makefile
@@ -95,6 +95,7 @@ TEST_FILES += va_128TBswitch.sh
include ../lib.mk
+$(OUTPUT)/khugepaged: vm_util.c
$(OUTPUT)/madv_populate: vm_util.c
$(OUTPUT)/soft-dirty: vm_util.c
$(OUTPUT)/split_huge_page_test: vm_util.c