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-rw-r--r--drivers/base/memory.c33
1 files changed, 23 insertions, 10 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index c7c4e0325cdb..26383af9900c 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -388,6 +388,22 @@ static ssize_t show_phys_device(struct device *dev,
}
#ifdef CONFIG_MEMORY_HOTREMOVE
+static void print_allowed_zone(char *buf, int nid, unsigned long start_pfn,
+ unsigned long nr_pages, int online_type,
+ struct zone *default_zone)
+{
+ struct zone *zone;
+
+ if (!allow_online_pfn_range(nid, start_pfn, nr_pages, online_type))
+ return;
+
+ zone = zone_for_pfn_range(online_type, nid, start_pfn, nr_pages);
+ if (zone != default_zone) {
+ strcat(buf, " ");
+ strcat(buf, zone->name);
+ }
+}
+
static ssize_t show_valid_zones(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -395,7 +411,7 @@ static ssize_t show_valid_zones(struct device *dev,
unsigned long start_pfn = section_nr_to_pfn(mem->start_section_nr);
unsigned long nr_pages = PAGES_PER_SECTION * sections_per_block;
unsigned long valid_start_pfn, valid_end_pfn;
- bool append = false;
+ struct zone *default_zone;
int nid;
/*
@@ -418,16 +434,13 @@ static ssize_t show_valid_zones(struct device *dev,
}
nid = pfn_to_nid(start_pfn);
- if (allow_online_pfn_range(nid, start_pfn, nr_pages, MMOP_ONLINE_KERNEL)) {
- strcat(buf, default_zone_for_pfn(nid, start_pfn, nr_pages)->name);
- append = true;
- }
+ default_zone = zone_for_pfn_range(MMOP_ONLINE_KEEP, nid, start_pfn, nr_pages);
+ strcat(buf, default_zone->name);
- if (allow_online_pfn_range(nid, start_pfn, nr_pages, MMOP_ONLINE_MOVABLE)) {
- if (append)
- strcat(buf, " ");
- strcat(buf, NODE_DATA(nid)->node_zones[ZONE_MOVABLE].name);
- }
+ print_allowed_zone(buf, nid, start_pfn, nr_pages, MMOP_ONLINE_KERNEL,
+ default_zone);
+ print_allowed_zone(buf, nid, start_pfn, nr_pages, MMOP_ONLINE_MOVABLE,
+ default_zone);
out:
strcat(buf, "\n");