summaryrefslogtreecommitdiffstats
path: root/mm/sparse.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/sparse.c')
-rw-r--r--mm/sparse.c53
1 files changed, 16 insertions, 37 deletions
diff --git a/mm/sparse.c b/mm/sparse.c
index 952f06d8f373..cb3bfae64036 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -427,7 +427,8 @@ static unsigned long __init section_map_size(void)
}
struct page __init *__populate_section_memmap(unsigned long pfn,
- unsigned long nr_pages, int nid, struct vmem_altmap *altmap)
+ unsigned long nr_pages, int nid, struct vmem_altmap *altmap,
+ struct dev_pagemap *pgmap)
{
unsigned long size = section_map_size();
struct page *map = sparse_buffer_alloc(size);
@@ -524,7 +525,7 @@ static void __init sparse_init_nid(int nid, unsigned long pnum_begin,
break;
map = __populate_section_memmap(pfn, PAGES_PER_SECTION,
- nid, NULL);
+ nid, NULL, NULL);
if (!map) {
pr_err("%s: node[%d] memory map backing failed. Some memory will not be available.",
__func__, nid);
@@ -629,9 +630,10 @@ void offline_mem_sections(unsigned long start_pfn, unsigned long end_pfn)
#ifdef CONFIG_SPARSEMEM_VMEMMAP
static struct page * __meminit populate_section_memmap(unsigned long pfn,
- unsigned long nr_pages, int nid, struct vmem_altmap *altmap)
+ unsigned long nr_pages, int nid, struct vmem_altmap *altmap,
+ struct dev_pagemap *pgmap)
{
- return __populate_section_memmap(pfn, nr_pages, nid, altmap);
+ return __populate_section_memmap(pfn, nr_pages, nid, altmap, pgmap);
}
static void depopulate_section_memmap(unsigned long pfn, unsigned long nr_pages,
@@ -700,7 +702,8 @@ static int fill_subsection_map(unsigned long pfn, unsigned long nr_pages)
}
#else
struct page * __meminit populate_section_memmap(unsigned long pfn,
- unsigned long nr_pages, int nid, struct vmem_altmap *altmap)
+ unsigned long nr_pages, int nid, struct vmem_altmap *altmap,
+ struct dev_pagemap *pgmap)
{
return kvmalloc_node(array_size(sizeof(struct page),
PAGES_PER_SECTION), GFP_KERNEL, nid);
@@ -823,7 +826,8 @@ static void section_deactivate(unsigned long pfn, unsigned long nr_pages,
}
static struct page * __meminit section_activate(int nid, unsigned long pfn,
- unsigned long nr_pages, struct vmem_altmap *altmap)
+ unsigned long nr_pages, struct vmem_altmap *altmap,
+ struct dev_pagemap *pgmap)
{
struct mem_section *ms = __pfn_to_section(pfn);
struct mem_section_usage *usage = NULL;
@@ -855,7 +859,7 @@ static struct page * __meminit section_activate(int nid, unsigned long pfn,
if (nr_pages < PAGES_PER_SECTION && early_section(ms))
return pfn_to_page(pfn);
- memmap = populate_section_memmap(pfn, nr_pages, nid, altmap);
+ memmap = populate_section_memmap(pfn, nr_pages, nid, altmap, pgmap);
if (!memmap) {
section_deactivate(pfn, nr_pages, altmap);
return ERR_PTR(-ENOMEM);
@@ -869,7 +873,8 @@ static struct page * __meminit section_activate(int nid, unsigned long pfn,
* @nid: The node to add section on
* @start_pfn: start pfn of the memory range
* @nr_pages: number of pfns to add in the section
- * @altmap: device page map
+ * @altmap: alternate pfns to allocate the memmap backing store
+ * @pgmap: alternate compound page geometry for devmap mappings
*
* This is only intended for hotplug.
*
@@ -883,7 +888,8 @@ static struct page * __meminit section_activate(int nid, unsigned long pfn,
* * -ENOMEM - Out of memory.
*/
int __meminit sparse_add_section(int nid, unsigned long start_pfn,
- unsigned long nr_pages, struct vmem_altmap *altmap)
+ unsigned long nr_pages, struct vmem_altmap *altmap,
+ struct dev_pagemap *pgmap)
{
unsigned long section_nr = pfn_to_section_nr(start_pfn);
struct mem_section *ms;
@@ -894,7 +900,7 @@ int __meminit sparse_add_section(int nid, unsigned long start_pfn,
if (ret < 0)
return ret;
- memmap = section_activate(nid, start_pfn, nr_pages, altmap);
+ memmap = section_activate(nid, start_pfn, nr_pages, altmap, pgmap);
if (IS_ERR(memmap))
return PTR_ERR(memmap);
@@ -916,33 +922,6 @@ int __meminit sparse_add_section(int nid, unsigned long start_pfn,
return 0;
}
-#ifdef CONFIG_MEMORY_FAILURE
-static void clear_hwpoisoned_pages(struct page *memmap, int nr_pages)
-{
- int i;
-
- /*
- * A further optimization is to have per section refcounted
- * num_poisoned_pages. But that would need more space per memmap, so
- * for now just do a quick global check to speed up this routine in the
- * absence of bad pages.
- */
- if (atomic_long_read(&num_poisoned_pages) == 0)
- return;
-
- for (i = 0; i < nr_pages; i++) {
- if (PageHWPoison(&memmap[i])) {
- num_poisoned_pages_dec();
- ClearPageHWPoison(&memmap[i]);
- }
- }
-}
-#else
-static inline void clear_hwpoisoned_pages(struct page *memmap, int nr_pages)
-{
-}
-#endif
-
void sparse_remove_section(struct mem_section *ms, unsigned long pfn,
unsigned long nr_pages, unsigned long map_offset,
struct vmem_altmap *altmap)