From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f46.google.com (mail-pa0-f46.google.com [209.85.220.46]) by kanga.kvack.org (Postfix) with ESMTP id 1BF6C6B0256 for ; Tue, 6 Oct 2015 11:24:24 -0400 (EDT) Received: by pablk4 with SMTP id lk4so212477486pab.3 for ; Tue, 06 Oct 2015 08:24:23 -0700 (PDT) Received: from mga09.intel.com (mga09.intel.com. [134.134.136.24]) by mx.google.com with ESMTP id k13si49616091pbq.238.2015.10.06.08.24.19 for ; Tue, 06 Oct 2015 08:24:19 -0700 (PDT) From: "Kirill A. Shutemov" Subject: [PATCHv12 10/37] mm, vmstats: new THP splitting event Date: Tue, 6 Oct 2015 18:23:37 +0300 Message-Id: <1444145044-72349-11-git-send-email-kirill.shutemov@linux.intel.com> In-Reply-To: <1444145044-72349-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1444145044-72349-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton , Andrea Arcangeli , Hugh Dickins Cc: Dave Hansen , Mel Gorman , Rik van Riel , Vlastimil Babka , Christoph Lameter , Naoya Horiguchi , Steve Capper , "Aneesh Kumar K.V" , Johannes Weiner , Michal Hocko , Jerome Marchand , Sasha Levin , linux-kernel@vger.kernel.org, linux-mm@kvack.org, "Kirill A. Shutemov" The patch replaces THP_SPLIT with tree events: THP_SPLIT_PAGE, THP_SPLIT_PAGE_FAILED and THP_SPLIT_PMD. It reflects the fact that we are going to be able split PMD without the compound page and that split_huge_page() can fail. Signed-off-by: Kirill A. Shutemov Acked-by: Christoph Lameter Tested-by: Sasha Levin Tested-by: Aneesh Kumar K.V Acked-by: Jerome Marchand Acked-by: Vlastimil Babka --- include/linux/vm_event_item.h | 4 +++- mm/huge_memory.c | 2 +- mm/vmstat.c | 4 +++- 3 files changed, 7 insertions(+), 3 deletions(-) diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index 2b1cef88b827..3261bfe2156a 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -69,7 +69,9 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, THP_FAULT_FALLBACK, THP_COLLAPSE_ALLOC, THP_COLLAPSE_ALLOC_FAILED, - THP_SPLIT, + THP_SPLIT_PAGE, + THP_SPLIT_PAGE_FAILED, + THP_SPLIT_PMD, THP_ZERO_PAGE_ALLOC, THP_ZERO_PAGE_ALLOC_FAILED, #endif diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 39a9d2683309..78875afedb88 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2088,7 +2088,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) BUG_ON(!PageSwapBacked(page)); __split_huge_page(page, anon_vma, list); - count_vm_event(THP_SPLIT); + count_vm_event(THP_SPLIT_PAGE); BUG_ON(PageCompound(page)); out_unlock: diff --git a/mm/vmstat.c b/mm/vmstat.c index b1ab879edb52..4491c26a44b5 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -821,7 +821,9 @@ const char * const vmstat_text[] = { "thp_fault_fallback", "thp_collapse_alloc", "thp_collapse_alloc_failed", - "thp_split", + "thp_split_page", + "thp_split_page_failed", + "thp_split_pmd", "thp_zero_page_alloc", "thp_zero_page_alloc_failed", #endif -- 2.5.3 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org