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Diffstat (limited to 'mm/cma.c')
-rw-r--r--mm/cma.c83
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