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authorReza Arbab <arbab@linux.vnet.ibm.com>2016-07-27 01:22:27 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-27 02:19:19 +0300
commita371d9f1cc49f58c8be3d28c88aceaef86cb59d0 (patch)
treec34eecfd777c811999982c442cb63cd2372426a7 /drivers/base/memory.c
parentdf429ac039360005299d56247647ca77098d660e (diff)
downloadlinux-a371d9f1cc49f58c8be3d28c88aceaef86cb59d0.tar.xz
memory-hotplug: use zone_can_shift() for sysfs valid_zones attribute
Since zone_can_shift() is being used to validate the target zone during onlining, it should also be used to determine the content of valid_zones. Link: http://lkml.kernel.org/r/1462816419-4479-4-git-send-email-arbab@linux.vnet.ibm.com Signed-off-by: Reza Arbab <arbab@linux.vnet.ibm.com> Reviewd-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Daniel Kiper <daniel.kiper@oracle.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Andrew Banman <abanman@sgi.com> Cc: Chen Yucong <slaoub@gmail.com> Cc: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: Zhang Zhen <zhenzhang.zhang@huawei.com> Cc: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/base/memory.c')
-rw-r--r--drivers/base/memory.c28
1 files changed, 17 insertions, 11 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index f46dba8b7092..dc75de9059cd 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -391,6 +391,7 @@ static ssize_t show_valid_zones(struct device *dev,
unsigned long nr_pages = PAGES_PER_SECTION * sections_per_block;
struct page *first_page;
struct zone *zone;
+ int zone_shift = 0;
start_pfn = section_nr_to_pfn(mem->start_section_nr);
end_pfn = start_pfn + nr_pages;
@@ -402,21 +403,26 @@ static ssize_t show_valid_zones(struct device *dev,
zone = page_zone(first_page);
- if (zone_idx(zone) == ZONE_MOVABLE - 1) {
- /*The mem block is the last memoryblock of this zone.*/
- if (end_pfn == zone_end_pfn(zone))
- return sprintf(buf, "%s %s\n",
- zone->name, (zone + 1)->name);
+ /* MMOP_ONLINE_KEEP */
+ sprintf(buf, "%s", zone->name);
+
+ /* MMOP_ONLINE_KERNEL */
+ zone_shift = zone_can_shift(start_pfn, nr_pages, ZONE_NORMAL);
+ if (zone_shift) {
+ strcat(buf, " ");
+ strcat(buf, (zone + zone_shift)->name);
}
- if (zone_idx(zone) == ZONE_MOVABLE) {
- /*The mem block is the first memoryblock of ZONE_MOVABLE.*/
- if (start_pfn == zone->zone_start_pfn)
- return sprintf(buf, "%s %s\n",
- zone->name, (zone - 1)->name);
+ /* MMOP_ONLINE_MOVABLE */
+ zone_shift = zone_can_shift(start_pfn, nr_pages, ZONE_MOVABLE);
+ if (zone_shift) {
+ strcat(buf, " ");
+ strcat(buf, (zone + zone_shift)->name);
}
- return sprintf(buf, "%s\n", zone->name);
+ strcat(buf, "\n");
+
+ return strlen(buf);
}
static DEVICE_ATTR(valid_zones, 0444, show_valid_zones, NULL);
#endif