arch, mm: remove arch specific show_mem

We have a generic implementation for quite some time already.  If there
is any arch specific information to be printed then we should add a
callback called from the generic code rather than duplicate the whole
show_mem.

The current code has resulted in the code duplication and the output
divergence which is both confusing and adds maintainance costs.

Let's just get rid of this mess.

Link: http://lkml.kernel.org/r/20170117091543.25850-4-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [UniCore32]
Acked-by: Helge Deller <deller@gmx.de> [for parisc]
Acked-by: Chris Metcalf <cmetcalf@mellanox.com> [for tile]
Acked-by: Mel Gorman <mgorman@suse.de>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 45 deletions

diff --git a/arch/tile/mm/pgtable.c b/arch/tile/mm/pgtable.c
index 7cc6ee7f1a58..492a7361e58e 100644
--- a/arch/tile/mm/pgtable.c
+++ b/arch/tile/mm/pgtable.c
@@ -36,51 +36,6 @@
 
 #define K(x) ((x) << (PAGE_SHIFT-10))
 
-/*
- * The normal show_free_areas() is too verbose on Tile, with dozens
- * of processors and often four NUMA zones each with high and lowmem.
- */
-void show_mem(unsigned int filter)
-{
-	struct zone *zone;
-
-	pr_err("Active:%lu inactive:%lu dirty:%lu writeback:%lu unstable:%lu free:%lu\n slab:%lu mapped:%lu pagetables:%lu bounce:%lu pagecache:%lu swap:%lu\n",
-	       (global_node_page_state(NR_ACTIVE_ANON) +
-		global_node_page_state(NR_ACTIVE_FILE)),
-	       (global_node_page_state(NR_INACTIVE_ANON) +
-		global_node_page_state(NR_INACTIVE_FILE)),
-	       global_node_page_state(NR_FILE_DIRTY),
-	       global_node_page_state(NR_WRITEBACK),
-	       global_node_page_state(NR_UNSTABLE_NFS),
-	       global_page_state(NR_FREE_PAGES),
-	       (global_page_state(NR_SLAB_RECLAIMABLE) +
-		global_page_state(NR_SLAB_UNRECLAIMABLE)),
-	       global_node_page_state(NR_FILE_MAPPED),
-	       global_page_state(NR_PAGETABLE),
-	       global_page_state(NR_BOUNCE),
-	       global_node_page_state(NR_FILE_PAGES),
-	       get_nr_swap_pages());
-
-	for_each_zone(zone) {
-		unsigned long flags, order, total = 0, largest_order = -1;
-
-		if (!populated_zone(zone))
-			continue;
-
-		spin_lock_irqsave(&zone->lock, flags);
-		for (order = 0; order < MAX_ORDER; order++) {
-			int nr = zone->free_area[order].nr_free;
-			total += nr << order;
-			if (nr)
-				largest_order = order;
-		}
-		spin_unlock_irqrestore(&zone->lock, flags);
-		pr_err("Node %d %7s: %lukB (largest %luKb)\n",
-		       zone_to_nid(zone), zone->name,
-		       K(total), largest_order ? K(1UL) << largest_order : 0);
-	}
-}
-
 /**
  * shatter_huge_page() - ensure a given address is mapped by a small page.
  *