1*4882a593SmuzhiyunWhat: /sys/kernel/mm/cma/ 2*4882a593SmuzhiyunDate: Feb 2021 3*4882a593SmuzhiyunContact: Minchan Kim <minchan@kernel.org> 4*4882a593SmuzhiyunDescription: 5*4882a593Smuzhiyun /sys/kernel/mm/cma/ contains a subdirectory for each CMA 6*4882a593Smuzhiyun heap name (also sometimes called CMA areas). 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun Each CMA heap subdirectory (that is, each 9*4882a593Smuzhiyun /sys/kernel/mm/cma/<cma-heap-name> directory) contains the 10*4882a593Smuzhiyun following items: 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun alloc_pages_success 13*4882a593Smuzhiyun alloc_pages_fail 14*4882a593Smuzhiyun 15*4882a593SmuzhiyunWhat: /sys/kernel/mm/cma/<cma-heap-name>/alloc_pages_success 16*4882a593SmuzhiyunDate: Feb 2021 17*4882a593SmuzhiyunContact: Minchan Kim <minchan@kernel.org> 18*4882a593SmuzhiyunDescription: 19*4882a593Smuzhiyun the number of pages CMA API succeeded to allocate 20*4882a593Smuzhiyun 21*4882a593SmuzhiyunWhat: /sys/kernel/mm/cma/<cma-heap-name>/alloc_pages_fail 22*4882a593SmuzhiyunDate: Feb 2021 23*4882a593SmuzhiyunContact: Minchan Kim <minchan@kernel.org> 24*4882a593SmuzhiyunDescription: 25*4882a593Smuzhiyun the number of pages CMA API failed to allocate 26