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1What: /sys/kernel/mm/cma/2Date: Feb 20213Contact: Minchan Kim <minchan@kernel.org>4Description:5 /sys/kernel/mm/cma/ contains a subdirectory for each CMA6 heap name (also sometimes called CMA areas).7 8 Each CMA heap subdirectory (that is, each9 /sys/kernel/mm/cma/<cma-heap-name> directory) contains the10 following items:11 12 alloc_pages_success13 alloc_pages_fail14 15What: /sys/kernel/mm/cma/<cma-heap-name>/alloc_pages_success16Date: Feb 202117Contact: Minchan Kim <minchan@kernel.org>18Description:19 the number of pages CMA API succeeded to allocate20 21What: /sys/kernel/mm/cma/<cma-heap-name>/alloc_pages_fail22Date: Feb 202123Contact: Minchan Kim <minchan@kernel.org>24Description:25 the number of pages CMA API failed to allocate26 27What: /sys/kernel/mm/cma/<cma-heap-name>/release_pages_success28Date: Feb 202429Contact: Anshuman Khandual <anshuman.khandual@arm.com>30Description:31 the number of pages CMA API succeeded to release32