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This is a test suite that uses the radix test infrastructure. It has been split into its own commit to allow for easier review of the maple tree code. The testing includes: - Allocation of nodes - gfp flag allocation checks - Expansion & contraction of tree - preallocation checks - tree navigation by next/prev - tree navigation by iterators (mas_for_each, etc) - Number of nodes for a given number of entries - Generic tree construction tests - Addition and removal of entries in forward and reverse numerical indexes - gap searching both forward and reverse - Combining gaps by overwriting entries in different ways - splitting right-most node - splitting left-most node - overwriting multiple slots - overwriting across different levels of the tree - overwriting the middle of a tree - causing a 3-way split up to the root by overwriting the last slot and first slot of different nodes and spanning different levels - RCU stress testing of the tree with threads - Duplication of the tree by entry count - Tests which were generated by fuzzers have been added. - A large number of tests which come from recording crashing in a VM and reconstructing the tree (see check_erase2_set()) Link: https://lkml.kernel.org/r/20220906194824.2110408-8-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Tested-by: Yu Zhao <yuzhao@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: SeongJae Park <sj@kernel.org> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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