From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f180.google.com (mail-wi0-f180.google.com [209.85.212.180]) by kanga.kvack.org (Postfix) with ESMTP id 1A86F6B0032 for ; Fri, 15 May 2015 09:10:24 -0400 (EDT) Received: by wicnf17 with SMTP id nf17so136507322wic.1 for ; Fri, 15 May 2015 06:10:23 -0700 (PDT) Received: from mx2.suse.de (cantor2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id w4si2743459wjx.25.2015.05.15.06.10.22 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 15 May 2015 06:10:22 -0700 (PDT) Message-ID: <5555F03D.3010309@suse.cz> Date: Fri, 15 May 2015 15:10:21 +0200 From: Vlastimil Babka MIME-Version: 1.0 Subject: Re: [PATCHv5 10/28] mm, vmstats: new THP splitting event References: <1429823043-157133-1-git-send-email-kirill.shutemov@linux.intel.com> <1429823043-157133-11-git-send-email-kirill.shutemov@linux.intel.com> In-Reply-To: <1429823043-157133-11-git-send-email-kirill.shutemov@linux.intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: "Kirill A. Shutemov" , Andrew Morton , Andrea Arcangeli , Hugh Dickins Cc: Dave Hansen , Mel Gorman , Rik van Riel , 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 On 04/23/2015 11:03 PM, Kirill A. Shutemov wrote: > The patch replaces THP_SPLIT with tree events: THP_SPLIT_PAGE, > THP_SPLIT_PAGE_FAILT 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 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 ccbfacf07160..be6d0e0f5050 100644 > --- a/mm/huge_memory.c > +++ b/mm/huge_memory.c > @@ -1961,7 +1961,7 @@ 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 1fd0886a389f..e1c87425fe11 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 > -- 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