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| author | Andrea Arcangeli <aarcange@redhat.com> | 2011-01-14 02:46:58 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-14 04:32:43 +0300 |
| commit | 79134171df238171daa4c024a42b77b401ccb00b (patch) | |
| tree | af7872d5851e371d09b9fe7eb80f4809713c79fb | |
| parent | b9bbfbe30ae088cc88a4b2ba7732baeebd1a0162 (diff) | |
| download | linux-79134171df238171daa4c024a42b77b401ccb00b.tar.xz | |
thp: transparent hugepage vmstat
Add hugepage stat information to /proc/vmstat and /proc/meminfo.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/proc/meminfo.c | 14 | ||||
| -rw-r--r-- | include/linux/mmzone.h | 1 | ||||
| -rw-r--r-- | mm/huge_memory.c | 3 | ||||
| -rw-r--r-- | mm/rmap.c | 20 | ||||
| -rw-r--r-- | mm/vmstat.c | 1 |
5 files changed, 34 insertions, 5 deletions
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index a65239cfd97e..ed257d141568 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -101,6 +101,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v) #ifdef CONFIG_MEMORY_FAILURE "HardwareCorrupted: %5lu kB\n" #endif +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + "AnonHugePages: %8lu kB\n" +#endif , K(i.totalram), K(i.freeram), @@ -128,7 +131,12 @@ static int meminfo_proc_show(struct seq_file *m, void *v) K(i.freeswap), K(global_page_state(NR_FILE_DIRTY)), K(global_page_state(NR_WRITEBACK)), - K(global_page_state(NR_ANON_PAGES)), + K(global_page_state(NR_ANON_PAGES) +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + + global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) * + HPAGE_PMD_NR +#endif + ), K(global_page_state(NR_FILE_MAPPED)), K(global_page_state(NR_SHMEM)), K(global_page_state(NR_SLAB_RECLAIMABLE) + @@ -151,6 +159,10 @@ static int meminfo_proc_show(struct seq_file *m, void *v) #ifdef CONFIG_MEMORY_FAILURE ,atomic_long_read(&mce_bad_pages) << (PAGE_SHIFT - 10) #endif +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + ,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) * + HPAGE_PMD_NR) +#endif ); hugetlb_report_meminfo(m); diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index dad3612a7e39..02ecb0189b1d 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -114,6 +114,7 @@ enum zone_stat_item { NUMA_LOCAL, /* allocation from local node */ NUMA_OTHER, /* allocation from other node */ #endif + NR_ANON_TRANSPARENT_HUGEPAGES, NR_VM_ZONE_STAT_ITEMS }; /* diff --git a/mm/huge_memory.c b/mm/huge_memory.c index a313403b3c5e..7101112a5429 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -751,6 +751,9 @@ static void __split_huge_page_refcount(struct page *page) lru_add_page_tail(zone, page, page_tail); } + __dec_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES); + __mod_zone_page_state(zone, NR_ANON_PAGES, HPAGE_PMD_NR); + ClearPageCompound(page); compound_unlock(page); spin_unlock_irq(&zone->lru_lock); diff --git a/mm/rmap.c b/mm/rmap.c index 92e14dcfe737..3825ae4bc32f 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -882,8 +882,13 @@ void do_page_add_anon_rmap(struct page *page, struct vm_area_struct *vma, unsigned long address, int exclusive) { int first = atomic_inc_and_test(&page->_mapcount); - if (first) - __inc_zone_page_state(page, NR_ANON_PAGES); + if (first) { + if (!PageTransHuge(page)) + __inc_zone_page_state(page, NR_ANON_PAGES); + else + __inc_zone_page_state(page, + NR_ANON_TRANSPARENT_HUGEPAGES); + } if (unlikely(PageKsm(page))) return; @@ -911,7 +916,10 @@ void page_add_new_anon_rmap(struct page *page, VM_BUG_ON(address < vma->vm_start || address >= vma->vm_end); SetPageSwapBacked(page); atomic_set(&page->_mapcount, 0); /* increment count (starts at -1) */ - __inc_zone_page_state(page, NR_ANON_PAGES); + if (!PageTransHuge(page)) + __inc_zone_page_state(page, NR_ANON_PAGES); + else + __inc_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES); __page_set_anon_rmap(page, vma, address, 1); if (page_evictable(page, vma)) lru_cache_add_lru(page, LRU_ACTIVE_ANON); @@ -964,7 +972,11 @@ void page_remove_rmap(struct page *page) return; if (PageAnon(page)) { mem_cgroup_uncharge_page(page); - __dec_zone_page_state(page, NR_ANON_PAGES); + if (!PageTransHuge(page)) + __dec_zone_page_state(page, NR_ANON_PAGES); + else + __dec_zone_page_state(page, + NR_ANON_TRANSPARENT_HUGEPAGES); } else { __dec_zone_page_state(page, NR_FILE_MAPPED); mem_cgroup_update_file_mapped(page, -1); diff --git a/mm/vmstat.c b/mm/vmstat.c index 751a65e00aac..0c3b5048773e 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -880,6 +880,7 @@ static const char * const vmstat_text[] = { "numa_local", "numa_other", #endif + "nr_anon_transparent_hugepages", "nr_dirty_threshold", "nr_dirty_background_threshold", |