From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> Subject: 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@xxxxxxxxxxxxxxx Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/vm_event_item.h | 7 +++++++ mm/memory.c | 1 + mm/vmstat.c | 2 ++ 3 files changed, 10 insertions(+) diff -puN include/linux/vm_event_item.h~thp-vmstats-add-counters-for-huge-file-pages include/linux/vm_event_item.h --- a/include/linux/vm_event_item.h~thp-vmstats-add-counters-for-huge-file-pages +++ a/include/linux/vm_event_item.h @@ -70,6 +70,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PS 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, PS 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 -puN mm/memory.c~thp-vmstats-add-counters-for-huge-file-pages mm/memory.c --- a/mm/memory.c~thp-vmstats-add-counters-for-huge-file-pages +++ a/mm/memory.c @@ -2968,6 +2968,7 @@ static int do_set_pmd(struct fault_env * /* fault is handled */ ret = 0; + count_vm_event(THP_FILE_MAPPED); out: spin_unlock(fe->ptl); return ret; diff -puN mm/vmstat.c~thp-vmstats-add-counters-for-huge-file-pages mm/vmstat.c --- a/mm/vmstat.c~thp-vmstats-add-counters-for-huge-file-pages +++ a/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", _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
