@@ -503,6 +503,9 @@ struct zone {
* bootmem allocator):
* managed_pages = present_pages - reserved_pages;
*
+ * cma pages is present pages that are assigned for CMA use
+ * (MIGRATE_CMA).
+ *
* So present_pages may be used by memory hotplug or memory power
* management logic to figure out unmanaged pages by checking
* (present_pages - managed_pages). And managed_pages should be used
@@ -527,6 +530,9 @@ struct zone {
atomic_long_t managed_pages;
unsigned long spanned_pages;
unsigned long present_pages;
+#ifdef CONFIG_CMA
+ unsigned long cma_pages;
+#endif
const char *name;
@@ -624,6 +630,15 @@ static inline unsigned long zone_managed
return (unsigned long)atomic_long_read(&zone->managed_pages);
}
+static inline unsigned long zone_cma_pages(struct zone *zone)
+{
+#ifdef CONFIG_CMA
+ return zone->cma_pages;
+#else
+ return 0;
+#endif
+}
+
static inline unsigned long zone_end_pfn(const struct zone *zone)
{
return zone->zone_start_pfn + zone->spanned_pages;
@@ -2168,6 +2168,7 @@ void __init init_cma_reserved_pageblock(
}
adjust_managed_page_count(page, pageblock_nr_pages);
+ page_zone(page)->cma_pages += pageblock_nr_pages;
}
#endif
@@ -1637,14 +1637,16 @@ static void zoneinfo_show_print(struct s
"\n high %lu"
"\n spanned %lu"
"\n present %lu"
- "\n managed %lu",
+ "\n managed %lu"
+ "\n cma %lu",
zone_page_state(zone, NR_FREE_PAGES),
min_wmark_pages(zone),
low_wmark_pages(zone),
high_wmark_pages(zone),
zone->spanned_pages,
zone->present_pages,
- zone_managed_pages(zone));
+ zone_managed_pages(zone),
+ zone_cma_pages(zone));
seq_printf(m,
"\n protection: (%ld",