| From | "Kirill A. Shutemov" <> | Subject | [PATCHv3, RFC 16/34] thp, mm: add event counters for huge page alloc on write to a file | Date | Fri, 5 Apr 2013 14:59:40 +0300 |
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From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Existing stats specify source of thp page: fault or collapse. We're going allocate a new huge page with write(2). It's nither fault nor collapse.
Let's introduce new events for that.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> --- include/linux/vm_event_item.h | 2 ++ mm/vmstat.c | 2 ++ 2 files changed, 4 insertions(+)
diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index d4b7a18..584c71c 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -71,6 +71,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, THP_FAULT_FALLBACK, THP_COLLAPSE_ALLOC, THP_COLLAPSE_ALLOC_FAILED, + THP_WRITE_ALLOC, + THP_WRITE_ALLOC_FAILED, THP_SPLIT, THP_ZERO_PAGE_ALLOC, THP_ZERO_PAGE_ALLOC_FAILED, diff --git a/mm/vmstat.c b/mm/vmstat.c index 292b1cf..dd8323a 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -818,6 +818,8 @@ const char * const vmstat_text[] = { "thp_fault_fallback", "thp_collapse_alloc", "thp_collapse_alloc_failed", + "thp_write_alloc", + "thp_write_alloc_failed", "thp_split", "thp_zero_page_alloc", "thp_zero_page_alloc_failed", -- 1.7.10.4
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