Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933232AbcCKXAO (ORCPT ); Fri, 11 Mar 2016 18:00:14 -0500 Received: from mga14.intel.com ([192.55.52.115]:16855 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933101AbcCKW7w (ORCPT ); Fri, 11 Mar 2016 17:59:52 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,321,1455004800"; d="scan'208";a="922073151" From: "Kirill A. Shutemov" To: Hugh Dickins , Andrea Arcangeli , Andrew Morton Cc: Dave Hansen , Vlastimil Babka , Christoph Lameter , Naoya Horiguchi , Jerome Marchand , Yang Shi , Sasha Levin , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv4 06/25] mm, rmap: account file thp pages Date: Sat, 12 Mar 2016 01:58:58 +0300 Message-Id: <1457737157-38573-7-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1457737157-38573-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1457737157-38573-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5606 Lines: 158 Let's add FileHugeMapped field into meminfo. It indicates how many time we map file THP NR_ANON_TRANSPARENT_HUGEPAGES is renamed to NR_ANON_THPS. Signed-off-by: Kirill A. Shutemov --- drivers/base/node.c | 10 ++++++---- fs/proc/meminfo.c | 5 +++-- include/linux/mmzone.h | 3 ++- mm/huge_memory.c | 2 +- mm/rmap.c | 12 ++++++------ mm/vmstat.c | 1 + 6 files changed, 19 insertions(+), 14 deletions(-) diff --git a/drivers/base/node.c b/drivers/base/node.c index 560751bad294..9cc4e9dad47e 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -113,6 +113,7 @@ static ssize_t node_read_meminfo(struct device *dev, "Node %d SUnreclaim: %8lu kB\n" #ifdef CONFIG_TRANSPARENT_HUGEPAGE "Node %d AnonHugePages: %8lu kB\n" + "Node %d FileHugeMapped: %8lu kB\n" #endif , nid, K(node_page_state(nid, NR_FILE_DIRTY)), @@ -131,10 +132,11 @@ static ssize_t node_read_meminfo(struct device *dev, node_page_state(nid, NR_SLAB_UNRECLAIMABLE)), nid, K(node_page_state(nid, NR_SLAB_RECLAIMABLE)), #ifdef CONFIG_TRANSPARENT_HUGEPAGE - nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE)) - , nid, - K(node_page_state(nid, NR_ANON_TRANSPARENT_HUGEPAGES) * - HPAGE_PMD_NR)); + nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE)), + nid, K(node_page_state(nid, NR_ANON_THPS) * + HPAGE_PMD_NR), + nid, K(node_page_state(nid, NR_FILE_THP_MAPPED) * + HPAGE_PMD_NR)); #else nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE))); #endif diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index 83720460c5bc..50666e987fbd 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -105,6 +105,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) #endif #ifdef CONFIG_TRANSPARENT_HUGEPAGE "AnonHugePages: %8lu kB\n" + "FileHugeMapped: %8lu kB\n" #endif #ifdef CONFIG_CMA "CmaTotal: %8lu kB\n" @@ -162,8 +163,8 @@ static int meminfo_proc_show(struct seq_file *m, void *v) , atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10) #endif #ifdef CONFIG_TRANSPARENT_HUGEPAGE - , K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) * - HPAGE_PMD_NR) + , K(global_page_state(NR_ANON_THPS) * HPAGE_PMD_NR) + , K(global_page_state(NR_FILE_THP_MAPPED) * HPAGE_PMD_NR) #endif #ifdef CONFIG_CMA , K(totalcma_pages) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index c60df9257cc7..85fd4aac53a1 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -158,7 +158,8 @@ enum zone_stat_item { WORKINGSET_REFAULT, WORKINGSET_ACTIVATE, WORKINGSET_NODERECLAIM, - NR_ANON_TRANSPARENT_HUGEPAGES, + NR_ANON_THPS, + NR_FILE_THP_MAPPED, NR_FREE_CMA_PAGES, NR_VM_ZONE_STAT_ITEMS }; diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 2e9e6f4afe40..44468fb7cdbf 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2982,7 +2982,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, if (atomic_add_negative(-1, compound_mapcount_ptr(page))) { /* Last compound_mapcount is gone. */ - __dec_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES); + __dec_zone_page_state(page, NR_ANON_THPS); if (TestClearPageDoubleMap(page)) { /* No need in mapcount reference anymore */ for (i = 0; i < HPAGE_PMD_NR; i++) diff --git a/mm/rmap.c b/mm/rmap.c index 66808955a5e0..359ec5cff9b0 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1227,10 +1227,8 @@ void do_page_add_anon_rmap(struct page *page, * pte lock(a spinlock) is held, which implies preemption * disabled. */ - if (compound) { - __inc_zone_page_state(page, - NR_ANON_TRANSPARENT_HUGEPAGES); - } + if (compound) + __inc_zone_page_state(page, NR_ANON_THPS); __mod_zone_page_state(page_zone(page), NR_ANON_PAGES, nr); } if (unlikely(PageKsm(page))) @@ -1268,7 +1266,7 @@ void page_add_new_anon_rmap(struct page *page, VM_BUG_ON_PAGE(!PageTransHuge(page), page); /* increment count (starts at -1) */ atomic_set(compound_mapcount_ptr(page), 0); - __inc_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES); + __inc_zone_page_state(page, NR_ANON_THPS); } else { /* Anon THP always mapped first with PMD */ VM_BUG_ON_PAGE(PageTransCompound(page), page); @@ -1298,6 +1296,7 @@ void page_add_file_rmap(struct page *page, bool compound) } if (!atomic_inc_and_test(compound_mapcount_ptr(page))) goto out; + __inc_zone_page_state(page, NR_FILE_THP_MAPPED); } else { if (!atomic_inc_and_test(&page->_mapcount)) goto out; @@ -1330,6 +1329,7 @@ static void page_remove_file_rmap(struct page *page, bool compound) } if (!atomic_add_negative(-1, compound_mapcount_ptr(page))) goto out; + __dec_zone_page_state(page, NR_FILE_THP_MAPPED); } else { if (!atomic_add_negative(-1, &page->_mapcount)) goto out; @@ -1363,7 +1363,7 @@ static void page_remove_anon_compound_rmap(struct page *page) if (!IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)) return; - __dec_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES); + __dec_zone_page_state(page, NR_ANON_THPS); if (TestClearPageDoubleMap(page)) { /* diff --git a/mm/vmstat.c b/mm/vmstat.c index 74f8c918ac4b..943b37f17007 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -762,6 +762,7 @@ const char * const vmstat_text[] = { "workingset_activate", "workingset_nodereclaim", "nr_anon_transparent_hugepages", + "nr_file_transparent_hugepages_mapped", "nr_free_cma", /* enum writeback_stat_item counters */ -- 2.7.0