Contributors: 24
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Yasunori Goto |
129 |
31.77% |
2 |
5.56% |
| Song Muchun |
92 |
22.66% |
2 |
5.56% |
| Matthew Wilcox |
29 |
7.14% |
2 |
5.56% |
| Yasuaki Ishimatsu |
25 |
6.16% |
1 |
2.78% |
| Linus Torvalds (pre-git) |
21 |
5.17% |
3 |
8.33% |
| Dave Hansen |
19 |
4.68% |
3 |
8.33% |
| Liu Shixin |
16 |
3.94% |
2 |
5.56% |
| David Hildenbrand (Red Hat) |
15 |
3.69% |
1 |
2.78% |
| Andrea Arcangeli |
10 |
2.46% |
1 |
2.78% |
| van der Linden, Frank |
8 |
1.97% |
1 |
2.78% |
| Andi Kleen |
7 |
1.72% |
2 |
5.56% |
| Badari Pulavarty |
6 |
1.48% |
1 |
2.78% |
| Dan J Williams |
5 |
1.23% |
2 |
5.56% |
| Kamezawa Hiroyuki |
4 |
0.99% |
2 |
5.56% |
| Andy Whitcroft |
4 |
0.99% |
1 |
2.78% |
| Yinghai Lu |
3 |
0.74% |
1 |
2.78% |
| Jiang Liu |
3 |
0.74% |
2 |
5.56% |
| Wen Congyang |
3 |
0.74% |
1 |
2.78% |
| JoonSoo Kim |
2 |
0.49% |
1 |
2.78% |
| David Howells |
1 |
0.25% |
1 |
2.78% |
| Adrian Bunk |
1 |
0.25% |
1 |
2.78% |
| Oscar Salvador |
1 |
0.25% |
1 |
2.78% |
| Linus Torvalds |
1 |
0.25% |
1 |
2.78% |
| Greg Kroah-Hartman |
1 |
0.25% |
1 |
2.78% |
| Total |
406 |
|
36 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* Bootmem core functions.
*
* Copyright (c) 2020, Bytedance.
*
* Author: Muchun Song <songmuchun@bytedance.com>
*
*/
#include <linux/mm.h>
#include <linux/compiler.h>
#include <linux/memblock.h>
#include <linux/bootmem_info.h>
#include <linux/memory_hotplug.h>
#include <linux/kmemleak.h>
void get_page_bootmem(unsigned long info, struct page *page,
enum bootmem_type type)
{
BUG_ON(type > 0xf);
BUG_ON(info > (ULONG_MAX >> 4));
SetPagePrivate(page);
set_page_private(page, info << 4 | type);
page_ref_inc(page);
}
void put_page_bootmem(struct page *page)
{
enum bootmem_type type = bootmem_type(page);
BUG_ON(type < MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE ||
type > MEMORY_HOTPLUG_MAX_BOOTMEM_TYPE);
if (page_ref_dec_return(page) == 1) {
ClearPagePrivate(page);
set_page_private(page, 0);
INIT_LIST_HEAD(&page->lru);
kmemleak_free_part_phys(PFN_PHYS(page_to_pfn(page)), PAGE_SIZE);
free_reserved_page(page);
}
}
static void __init register_page_bootmem_info_section(unsigned long start_pfn)
{
unsigned long mapsize, section_nr, i;
struct mem_section *ms;
struct mem_section_usage *usage;
struct page *page;
start_pfn = SECTION_ALIGN_DOWN(start_pfn);
section_nr = pfn_to_section_nr(start_pfn);
ms = __nr_to_section(section_nr);
if (!preinited_vmemmap_section(ms))
register_page_bootmem_memmap(section_nr, pfn_to_page(start_pfn),
PAGES_PER_SECTION);
usage = ms->usage;
page = virt_to_page(usage);
mapsize = PAGE_ALIGN(mem_section_usage_size()) >> PAGE_SHIFT;
for (i = 0; i < mapsize; i++, page++)
get_page_bootmem(section_nr, page, MIX_SECTION_INFO);
}
void __init register_page_bootmem_info_node(struct pglist_data *pgdat)
{
unsigned long i, pfn, end_pfn, nr_pages;
int node = pgdat->node_id;
struct page *page;
nr_pages = PAGE_ALIGN(sizeof(struct pglist_data)) >> PAGE_SHIFT;
page = virt_to_page(pgdat);
for (i = 0; i < nr_pages; i++, page++)
get_page_bootmem(node, page, NODE_INFO);
pfn = pgdat->node_start_pfn;
end_pfn = pgdat_end_pfn(pgdat);
/* register section info */
for (; pfn < end_pfn; pfn += PAGES_PER_SECTION) {
/*
* Some platforms can assign the same pfn to multiple nodes - on
* node0 as well as nodeN. To avoid registering a pfn against
* multiple nodes we check that this pfn does not already
* reside in some other nodes.
*/
if (pfn_valid(pfn) && (early_pfn_to_nid(pfn) == node))
register_page_bootmem_info_section(pfn);
}
}