microsoft
/
WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность

- Stefan Roesch has added ksm statistics to /proc/pid/smaps 

- Also a number of singleton patches, mainly cleanups and leftovers.
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZPZGXwAKCRDdBJ7gKXxA
 jkjpAP9F0t5xy3JGs8Iew47Yqva+fvvrZdUSx3aHIZ/C3HyaJwEAi7DwzqludyHi
 851+qSdyX3bWnDEuejuNeMykh2QF1wo=
 =pw9A
 -----END PGP SIGNATURE-----

Merge tag 'mm-stable-2023-09-04-14-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more MM updates from Andrew Morton:

 - Stefan Roesch has added ksm statistics to /proc/pid/smaps

 - Also a number of singleton patches, mainly cleanups and leftovers

* tag 'mm-stable-2023-09-04-14-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/kmemleak: move up cond_resched() call in page scanning loop
  mm: page_alloc: remove stale CMA guard code
  MAINTAINERS: add rmap.h to mm entry
  rmap: remove anon_vma_link() nommu stub
  proc/ksm: add ksm stats to /proc/pid/smaps
  mm/hwpoison: rename hwp_walk* to hwpoison_walk*
  mm: memory-failure: add PageOffline() check
This commit is contained in:
Linus Torvalds 2023-09-05 10:56:27 -07:00
Родитель 893a259caa e68d343d27
Коммит 5eea5820c7
7 изменённых файлов: 29 добавлений и 30 удалений
Показать статистику Скачать Patch файл Скачать Diff файл Показать все файлы Свернуть все файлы

4
Documentation/filesystems/proc.rst
Просмотреть файл

@ -461,6 +461,7 @@ Memory Area, or VMA) there is a series of lines such as the following::
Private_Dirty: 0 kB
Referenced: 892 kB
Anonymous: 0 kB
KSM: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
@ -501,6 +502,9 @@ accessed.
a mapping associated with a file may contain anonymous pages: when MAP_PRIVATE
and a page is modified, the file page is replaced by a private anonymous copy.
"KSM" reports how many of the pages are KSM pages. Note that KSM-placed zeropages
are not included, only actual KSM pages.
"LazyFree" shows the amount of memory which is marked by madvise(MADV_FREE).
The memory isn't freed immediately with madvise(). It's freed in memory
pressure if the memory is clean. Please note that the printed value might

1
MAINTAINERS
Просмотреть файл

@ -13742,6 +13742,7 @@ F: include/linux/memory_hotplug.h
F: include/linux/mm.h
F: include/linux/mmzone.h
F: include/linux/pagewalk.h
F: include/linux/rmap.h
F: include/trace/events/ksm.h
F: mm/
F: tools/mm/

6
fs/proc/task_mmu.c
Просмотреть файл

@ -4,6 +4,7 @@
#include <linux/hugetlb.h>
#include <linux/huge_mm.h>
#include <linux/mount.h>
#include <linux/ksm.h>
#include <linux/seq_file.h>
#include <linux/highmem.h>
#include <linux/ptrace.h>
@ -396,6 +397,7 @@ struct mem_size_stats {
unsigned long swap;
unsigned long shared_hugetlb;
unsigned long private_hugetlb;
unsigned long ksm;
u64 pss;
u64 pss_anon;
u64 pss_file;
@ -452,6 +454,9 @@ static void smaps_account(struct mem_size_stats *mss, struct page *page,
mss->lazyfree += size;
}
if (PageKsm(page))
mss->ksm += size;
mss->resident += size;
/* Accumulate the size in pages that have been accessed. */
if (young || page_is_young(page) || PageReferenced(page))
@ -825,6 +830,7 @@ static void __show_smap(struct seq_file *m, const struct mem_size_stats *mss,
SEQ_PUT_DEC(" kB\nPrivate_Dirty: ", mss->private_dirty);
SEQ_PUT_DEC(" kB\nReferenced: ", mss->referenced);
SEQ_PUT_DEC(" kB\nAnonymous: ", mss->anonymous);
SEQ_PUT_DEC(" kB\nKSM: ", mss->ksm);
SEQ_PUT_DEC(" kB\nLazyFree: ", mss->lazyfree);
SEQ_PUT_DEC(" kB\nAnonHugePages: ", mss->anonymous_thp);
SEQ_PUT_DEC(" kB\nShmemPmdMapped: ", mss->shmem_thp);

1
include/linux/rmap.h
Просмотреть файл

@ -479,7 +479,6 @@ struct anon_vma *folio_lock_anon_vma_read(struct folio *folio,
#define anon_vma_init() do {} while (0)
#define anon_vma_prepare(vma) (0)
#define anon_vma_link(vma) do {} while (0)
static inline int folio_referenced(struct folio *folio, int is_locked,
struct mem_cgroup *memcg,

5
mm/kmemleak.c
Просмотреть файл

@ -1584,6 +1584,9 @@ static void kmemleak_scan(void)
for (pfn = start_pfn; pfn < end_pfn; pfn++) {
struct page *page = pfn_to_online_page(pfn);
if (!(pfn & 63))
cond_resched();
if (!page)
continue;
@ -1594,8 +1597,6 @@ static void kmemleak_scan(void)
if (page_count(page) == 0)
continue;
scan_block(page, page + 1, NULL);
if (!(pfn & 63))
cond_resched();
}
}
put_online_mems();

21
mm/memory-failure.c
Просмотреть файл

@ -717,7 +717,7 @@ static void collect_procs(struct page *page, struct list_head *tokill,
collect_procs_file(page, tokill, force_early);
}
struct hwp_walk {
struct hwpoison_walk {
struct to_kill tk;
unsigned long pfn;
int flags;
@ -752,7 +752,7 @@ static int check_hwpoisoned_entry(pte_t pte, unsigned long addr, short shift,
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static int check_hwpoisoned_pmd_entry(pmd_t *pmdp, unsigned long addr,
struct hwp_walk *hwp)
struct hwpoison_walk *hwp)
{
pmd_t pmd = *pmdp;
unsigned long pfn;
@ -770,7 +770,7 @@ static int check_hwpoisoned_pmd_entry(pmd_t *pmdp, unsigned long addr,
}
#else
static int check_hwpoisoned_pmd_entry(pmd_t *pmdp, unsigned long addr,
struct hwp_walk *hwp)
struct hwpoison_walk *hwp)
{
return 0;
}
@ -779,7 +779,7 @@ static int check_hwpoisoned_pmd_entry(pmd_t *pmdp, unsigned long addr,
static int hwpoison_pte_range(pmd_t *pmdp, unsigned long addr,
unsigned long end, struct mm_walk *walk)
{
struct hwp_walk *hwp = walk->private;
struct hwpoison_walk *hwp = walk->private;
int ret = 0;
pte_t *ptep, *mapped_pte;
spinlock_t *ptl;
@ -813,7 +813,7 @@ static int hwpoison_hugetlb_range(pte_t *ptep, unsigned long hmask,
unsigned long addr, unsigned long end,
struct mm_walk *walk)
{
struct hwp_walk *hwp = walk->private;
struct hwpoison_walk *hwp = walk->private;
pte_t pte = huge_ptep_get(ptep);
struct hstate *h = hstate_vma(walk->vma);
@ -824,7 +824,7 @@ static int hwpoison_hugetlb_range(pte_t *ptep, unsigned long hmask,
#define hwpoison_hugetlb_range NULL
#endif
static const struct mm_walk_ops hwp_walk_ops = {
static const struct mm_walk_ops hwpoison_walk_ops = {
.pmd_entry = hwpoison_pte_range,
.hugetlb_entry = hwpoison_hugetlb_range,
.walk_lock = PGWALK_RDLOCK,
@ -847,7 +847,7 @@ static int kill_accessing_process(struct task_struct *p, unsigned long pfn,
int flags)
{
int ret;
struct hwp_walk priv = {
struct hwpoison_walk priv = {
.pfn = pfn,
};
priv.tk.tsk = p;
@ -856,7 +856,7 @@ static int kill_accessing_process(struct task_struct *p, unsigned long pfn,
return -EFAULT;
mmap_read_lock(p->mm);
ret = walk_page_range(p->mm, 0, TASK_SIZE, &hwp_walk_ops,
ret = walk_page_range(p->mm, 0, TASK_SIZE, &hwpoison_walk_ops,
(void *)&priv);
if (ret == 1 && priv.tk.addr)
kill_proc(&priv.tk, pfn, flags);
@ -1562,7 +1562,7 @@ static bool hwpoison_user_mappings(struct page *p, unsigned long pfn,
* Here we are interested only in user-mapped pages, so skip any
* other types of pages.
*/
if (PageReserved(p) || PageSlab(p) || PageTable(p))
if (PageReserved(p) || PageSlab(p) || PageTable(p) || PageOffline(p))
return true;
if (!(PageLRU(hpage) || PageHuge(p)))
return true;
@ -2533,7 +2533,8 @@ int unpoison_memory(unsigned long pfn)
goto unlock_mutex;
}
if (folio_test_slab(folio) || PageTable(&folio->page) || folio_test_reserved(folio))
if (folio_test_slab(folio) || PageTable(&folio->page) ||
folio_test_reserved(folio) || PageOffline(&folio->page))
goto unlock_mutex;
/*

21
mm/page_alloc.c
Просмотреть файл

@ -2641,12 +2641,6 @@ struct page *rmqueue_buddy(struct zone *preferred_zone, struct zone *zone,
do {
page = NULL;
spin_lock_irqsave(&zone->lock, flags);
/*
* order-0 request can reach here when the pcplist is skipped
* due to non-CMA allocation context. HIGHATOMIC area is
* reserved for high-order atomic allocation, so order-0
* request should skip it.
*/
if (alloc_flags & ALLOC_HIGHATOMIC)
page = __rmqueue_smallest(zone, order, MIGRATE_HIGHATOMIC);
if (!page) {
@ -2780,17 +2774,10 @@ struct page *rmqueue(struct zone *preferred_zone,
WARN_ON_ONCE((gfp_flags & __GFP_NOFAIL) && (order > 1));
if (likely(pcp_allowed_order(order))) {
/*
* MIGRATE_MOVABLE pcplist could have the pages on CMA area and
* we need to skip it when CMA area isn't allowed.
*/
if (!IS_ENABLED(CONFIG_CMA) || alloc_flags & ALLOC_CMA ||
migratetype != MIGRATE_MOVABLE) {
page = rmqueue_pcplist(preferred_zone, zone, order,
migratetype, alloc_flags);
if (likely(page))
goto out;
}
page = rmqueue_pcplist(preferred_zone, zone, order,
migratetype, alloc_flags);
if (likely(page))
goto out;
}
page = rmqueue_buddy(preferred_zone, zone, order, alloc_flags,