diff options
Diffstat (limited to 'lib/show_mem.c')
| -rw-r--r-- | lib/show_mem.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/lib/show_mem.c b/lib/show_mem.c new file mode 100644 index 000000000..1c26c14ff --- /dev/null +++ b/lib/show_mem.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Generic show_mem() implementation + * + * Copyright (C) 2008 Johannes Weiner <hannes@saeurebad.de> + */ + +#include <linux/mm.h> +#include <linux/cma.h> + +void show_mem(unsigned int filter, nodemask_t *nodemask) +{ + pg_data_t *pgdat; + unsigned long total = 0, reserved = 0, highmem = 0; + + printk("Mem-Info:\n"); + show_free_areas(filter, nodemask); + + for_each_online_pgdat(pgdat) { + int zoneid; + + for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) { + struct zone *zone = &pgdat->node_zones[zoneid]; + if (!populated_zone(zone)) + continue; + + total += zone->present_pages; + reserved += zone->present_pages - zone_managed_pages(zone); + + if (is_highmem_idx(zoneid)) + highmem += zone->present_pages; + } + } + + printk("%lu pages RAM\n", total); + printk("%lu pages HighMem/MovableOnly\n", highmem); + printk("%lu pages reserved\n", reserved); +#ifdef CONFIG_CMA + printk("%lu pages cma reserved\n", totalcma_pages); +#endif +#ifdef CONFIG_MEMORY_FAILURE + printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages)); +#endif +} |