From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932441AbcDFLVp (ORCPT ); Wed, 6 Apr 2016 07:21:45 -0400 Received: from outbound-smtp04.blacknight.com ([81.17.249.35]:56288 "EHLO outbound-smtp04.blacknight.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932314AbcDFLVg (ORCPT ); Wed, 6 Apr 2016 07:21:36 -0400 From: Mel Gorman To: Linux-MM Cc: Rik van Riel , Vlastimil Babka , Johannes Weiner , LKML , Mel Gorman Subject: [PATCH 19/27] mm: Move vmscan writes and file write accounting to the node Date: Wed, 6 Apr 2016 12:20:18 +0100 Message-Id: <1459941626-3290-20-git-send-email-mgorman@techsingularity.net> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1459941626-3290-1-git-send-email-mgorman@techsingularity.net> References: <1459941626-3290-1-git-send-email-mgorman@techsingularity.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As reclaim is now node-based, it follows that page write activity due to page reclaim should also be accounted for on the node. For consistency, also account page writes and page dirtying on a per-node basis. After this patch, there are a few remaining zone counters that may appear strange but are fine. NUMA stats are still per-zone as this is a user-space interface that tools consume. NR_MLOCK, NR_SLAB_*, NR_PAGETABLE, NR_KERNEL_STACK and NR_BOUNCE are all allocations that potentially pin low memory and cannot trivially be reclaimed on demand. This information is still useful for debugging a page allocation failure warning. Signed-off-by: Mel Gorman --- include/linux/mmzone.h | 8 ++++---- include/trace/events/writeback.h | 4 ++-- mm/page-writeback.c | 6 +++--- mm/vmscan.c | 4 ++-- mm/vmstat.c | 8 ++++---- 5 files changed, 15 insertions(+), 15 deletions(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index b4f91e9278c5..3668df4a69b9 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -125,10 +125,6 @@ enum zone_stat_item { NR_KERNEL_STACK, /* Second 128 byte cacheline */ NR_BOUNCE, - NR_VMSCAN_WRITE, - NR_VMSCAN_IMMEDIATE, /* Prioritise for reclaim when writeback ends */ - NR_DIRTIED, /* page dirtyings since bootup */ - NR_WRITTEN, /* page writings since bootup */ #ifdef CONFIG_NUMA NUMA_HIT, /* allocated in intended node */ NUMA_MISS, /* allocated in non intended node */ @@ -163,6 +159,10 @@ enum node_stat_item { NR_WRITEBACK_TEMP, /* Writeback using temporary buffers */ NR_SHMEM, /* shmem pages (included tmpfs/GEM pages) */ NR_UNSTABLE_NFS, /* NFS unstable pages */ + NR_VMSCAN_WRITE, + NR_VMSCAN_IMMEDIATE, /* Prioritise for reclaim when writeback ends */ + NR_DIRTIED, /* page dirtyings since bootup */ + NR_WRITTEN, /* page writings since bootup */ NR_VM_NODE_STAT_ITEMS }; diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h index c581d9c04ca5..a1002cfede1d 100644 --- a/include/trace/events/writeback.h +++ b/include/trace/events/writeback.h @@ -415,8 +415,8 @@ TRACE_EVENT(global_dirty_state, __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY); __entry->nr_writeback = global_node_page_state(NR_WRITEBACK); __entry->nr_unstable = global_node_page_state(NR_UNSTABLE_NFS); - __entry->nr_dirtied = global_page_state(NR_DIRTIED); - __entry->nr_written = global_page_state(NR_WRITTEN); + __entry->nr_dirtied = global_node_page_state(NR_DIRTIED); + __entry->nr_written = global_node_page_state(NR_WRITTEN); __entry->background_thresh = background_thresh; __entry->dirty_thresh = dirty_thresh; __entry->dirty_limit = global_wb_domain.dirty_limit; diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 1e8c91281cc8..4e543702f395 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2429,7 +2429,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping) mem_cgroup_inc_page_stat(page, MEM_CGROUP_STAT_DIRTY); __inc_node_page_state(page, NR_FILE_DIRTY); - __inc_zone_page_state(page, NR_DIRTIED); + __inc_node_page_state(page, NR_DIRTIED); __inc_wb_stat(wb, WB_RECLAIMABLE); __inc_wb_stat(wb, WB_DIRTIED); task_io_account_write(PAGE_CACHE_SIZE); @@ -2517,7 +2517,7 @@ void account_page_redirty(struct page *page) wb = unlocked_inode_to_wb_begin(inode, &locked); current->nr_dirtied--; - dec_zone_page_state(page, NR_DIRTIED); + dec_node_page_state(page, NR_DIRTIED); dec_wb_stat(wb, WB_DIRTIED); unlocked_inode_to_wb_end(inode, locked); } @@ -2746,7 +2746,7 @@ int test_clear_page_writeback(struct page *page) if (ret) { mem_cgroup_dec_page_stat(page, MEM_CGROUP_STAT_WRITEBACK); dec_node_page_state(page, NR_WRITEBACK); - inc_zone_page_state(page, NR_WRITTEN); + inc_node_page_state(page, NR_WRITTEN); } unlock_page_memcg(page); return ret; diff --git a/mm/vmscan.c b/mm/vmscan.c index 8f9dba34a953..2f2072bc6884 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -596,7 +596,7 @@ static pageout_t pageout(struct page *page, struct address_space *mapping, ClearPageReclaim(page); } trace_mm_vmscan_writepage(page); - inc_zone_page_state(page, NR_VMSCAN_WRITE); + inc_node_page_state(page, NR_VMSCAN_WRITE); return PAGE_SUCCESS; } @@ -1095,7 +1095,7 @@ static unsigned long shrink_page_list(struct list_head *page_list, * except we already have the page isolated * and know it's dirty */ - inc_zone_page_state(page, NR_VMSCAN_IMMEDIATE); + inc_node_page_state(page, NR_VMSCAN_IMMEDIATE); SetPageReclaim(page); goto keep_locked; diff --git a/mm/vmstat.c b/mm/vmstat.c index b4fee815f7b4..45ecff0f9f9f 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -944,10 +944,6 @@ const char * const vmstat_text[] = { "nr_page_table_pages", "nr_kernel_stack", "nr_bounce", - "nr_vmscan_write", - "nr_vmscan_immediate_reclaim", - "nr_dirtied", - "nr_written", #ifdef CONFIG_NUMA "numa_hit", @@ -980,6 +976,10 @@ const char * const vmstat_text[] = { "nr_writeback_temp", "nr_shmem", "nr_unstable", + "nr_vmscan_write", + "nr_vmscan_immediate_reclaim", + "nr_dirtied", + "nr_written", /* enum writeback_stat_item counters */ "nr_dirty_threshold", -- 2.6.4