diff options
Diffstat (limited to 'mm/cma.c')
| -rw-r--r-- | mm/cma.c | 83 |
1 files changed, 11 insertions, 72 deletions
diff --git a/mm/cma.c b/mm/cma.c index aa40e6c7b042..5809bbe360d7 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -39,7 +39,6 @@ #include <trace/events/cma.h> #include "cma.h" -#include "internal.h" struct cma cma_areas[MAX_CMA_AREAS]; unsigned cma_area_count; @@ -110,25 +109,23 @@ static int __init cma_activate_area(struct cma *cma) if (!cma->bitmap) return -ENOMEM; + WARN_ON_ONCE(!pfn_valid(pfn)); + zone = page_zone(pfn_to_page(pfn)); + do { unsigned j; base_pfn = pfn; - if (!pfn_valid(base_pfn)) - goto err; - - zone = page_zone(pfn_to_page(base_pfn)); for (j = pageblock_nr_pages; j; --j, pfn++) { - if (!pfn_valid(pfn)) - goto err; - + WARN_ON_ONCE(!pfn_valid(pfn)); /* - * In init_cma_reserved_pageblock(), present_pages - * is adjusted with assumption that all pages in - * the pageblock come from a single zone. + * alloc_contig_range requires the pfn range + * specified to be in the same zone. Make this + * simple by forcing the entire CMA resv range + * to be in the same zone. */ if (page_zone(pfn_to_page(pfn)) != zone) - goto err; + goto not_in_zone; } init_cma_reserved_pageblock(pfn_to_page(base_pfn)); } while (--i); @@ -142,7 +139,7 @@ static int __init cma_activate_area(struct cma *cma) return 0; -err: +not_in_zone: pr_err("CMA area %s could not be activated\n", cma->name); kfree(cma->bitmap); cma->count = 0; @@ -152,41 +149,6 @@ err: static int __init cma_init_reserved_areas(void) { int i; - struct zone *zone; - pg_data_t *pgdat; - - if (!cma_area_count) - return 0; - - for_each_online_pgdat(pgdat) { - unsigned long start_pfn = UINT_MAX, end_pfn = 0; - - zone = &pgdat->node_zones[ZONE_MOVABLE]; - - /* - * In this case, we cannot adjust the zone range - * since it is now maximum node span and we don't - * know original zone range. - */ - if (populated_zone(zone)) - continue; - - for (i = 0; i < cma_area_count; i++) { - if (pfn_to_nid(cma_areas[i].base_pfn) != - pgdat->node_id) - continue; - - start_pfn = min(start_pfn, cma_areas[i].base_pfn); - end_pfn = max(end_pfn, cma_areas[i].base_pfn + - cma_areas[i].count); - } - - if (!end_pfn) - continue; - - zone->zone_start_pfn = start_pfn; - zone->spanned_pages = end_pfn - start_pfn; - } for (i = 0; i < cma_area_count; i++) { int ret = cma_activate_area(&cma_areas[i]); @@ -195,32 +157,9 @@ static int __init cma_init_reserved_areas(void) return ret; } - /* - * Reserved pages for ZONE_MOVABLE are now activated and - * this would change ZONE_MOVABLE's managed page counter and - * the other zones' present counter. We need to re-calculate - * various zone information that depends on this initialization. - */ - build_all_zonelists(NULL); - for_each_populated_zone(zone) { - if (zone_idx(zone) == ZONE_MOVABLE) { - zone_pcp_reset(zone); - setup_zone_pageset(zone); - } else - zone_pcp_update(zone); - - set_zone_contiguous(zone); - } - - /* - * We need to re-init per zone wmark by calling - * init_per_zone_wmark_min() but doesn't call here because it is - * registered on core_initcall and it will be called later than us. - */ - return 0; } -pure_initcall(cma_init_reserved_areas); +core_initcall(cma_init_reserved_areas); /** * cma_init_reserved_mem() - create custom contiguous area from reserved memory |