| What: /sys/kernel/mm/cma/ | |
| Date: Feb 2021 | |
| Contact: Minchan Kim <minchan@kernel.org> | |
| Description: | |
| /sys/kernel/mm/cma/ contains a subdirectory for each CMA | |
| heap name (also sometimes called CMA areas). | |
| Each CMA heap subdirectory (that is, each | |
| /sys/kernel/mm/cma/<cma-heap-name> directory) contains the | |
| following items: | |
| alloc_pages_success | |
| alloc_pages_fail | |
| What: /sys/kernel/mm/cma/<cma-heap-name>/alloc_pages_success | |
| Date: Feb 2021 | |
| Contact: Minchan Kim <minchan@kernel.org> | |
| Description: | |
| the number of pages CMA API succeeded to allocate | |
| What: /sys/kernel/mm/cma/<cma-heap-name>/alloc_pages_fail | |
| Date: Feb 2021 | |
| Contact: Minchan Kim <minchan@kernel.org> | |
| Description: | |
| the number of pages CMA API failed to allocate | |
| What: /sys/kernel/mm/cma/<cma-heap-name>/release_pages_success | |
| Date: Feb 2024 | |
| Contact: Anshuman Khandual <anshuman.khandual@arm.com> | |
| Description: | |
| the number of pages CMA API succeeded to release | |
| What: /sys/kernel/mm/cma/<cma-heap-name>/total_pages | |
| Date: Jun 2024 | |
| Contact: Frank van der Linden <fvdl@google.com> | |
| Description: | |
| The size of the CMA area in pages. | |
| What: /sys/kernel/mm/cma/<cma-heap-name>/available_pages | |
| Date: Jun 2024 | |
| Contact: Frank van der Linden <fvdl@google.com> | |
| Description: | |
| The number of pages in the CMA area that are still | |
| available for CMA allocation. |