diff options
| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2016-07-27 00:25:31 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-27 01:19:19 +0200 |
| commit | 95ecedcd6abbb05d8177331e2fa697888dcd634b (patch) | |
| tree | 7635af0727ac5adec84761793f441f8862d0091c | |
| parent | mm: introduce do_set_pmd() (diff) | |
| download | linux-95ecedcd6abbb05d8177331e2fa697888dcd634b.tar.xz linux-95ecedcd6abbb05d8177331e2fa697888dcd634b.zip | |
thp, vmstats: add counters for huge file pages
THP_FILE_ALLOC: how many times huge page was allocated and put page
cache.
THP_FILE_MAPPED: how many times file huge page was mapped.
Link: http://lkml.kernel.org/r/1466021202-61880-13-git-send-email-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/vm_event_item.h | 7 | ||||
| -rw-r--r-- | mm/memory.c | 1 | ||||
| -rw-r--r-- | mm/vmstat.c | 2 |
3 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index ec084321fe09..42604173f122 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -70,6 +70,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, THP_FAULT_FALLBACK, THP_COLLAPSE_ALLOC, THP_COLLAPSE_ALLOC_FAILED, + THP_FILE_ALLOC, + THP_FILE_MAPPED, THP_SPLIT_PAGE, THP_SPLIT_PAGE_FAILED, THP_DEFERRED_SPLIT_PAGE, @@ -100,4 +102,9 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, NR_VM_EVENT_ITEMS }; +#ifndef CONFIG_TRANSPARENT_HUGEPAGE +#define THP_FILE_ALLOC ({ BUILD_BUG(); 0; }) +#define THP_FILE_MAPPED ({ BUILD_BUG(); 0; }) +#endif + #endif /* VM_EVENT_ITEM_H_INCLUDED */ diff --git a/mm/memory.c b/mm/memory.c index 650622a3a0a1..10a424eca8a4 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2968,6 +2968,7 @@ static int do_set_pmd(struct fault_env *fe, struct page *page) /* fault is handled */ ret = 0; + count_vm_event(THP_FILE_MAPPED); out: spin_unlock(fe->ptl); return ret; diff --git a/mm/vmstat.c b/mm/vmstat.c index 2a0f26bdae39..cff2f4ec9cce 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -817,6 +817,8 @@ const char * const vmstat_text[] = { "thp_fault_fallback", "thp_collapse_alloc", "thp_collapse_alloc_failed", + "thp_file_alloc", + "thp_file_mapped", "thp_split_page", "thp_split_page_failed", "thp_deferred_split_page", |