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Commit 32049296 authored by Johannes Weiner's avatar Johannes Weiner Committed by Linus Torvalds
Browse files

mm: memcontrol: use the node-native slab memory counters 

Now that the slab counters are moved from the zone to the node level we
can drop the private memcg node stats and use the official ones.

Link: http://lkml.kernel.org/r/20170530181724.27197-4-hannes@cmpxchg.org


Signed-off-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
Acked-by: default avatarVladimir Davydov <vdavydov.dev@gmail.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 385386cf

include/linux/memcontrol.h

+0 −2
Original line number Diff line number Diff line
@@ -44,8 +44,6 @@ enum memcg_stat_item { 
	MEMCG_SOCK,

	/* XXX: why are these zone and not node counters? */

	MEMCG_KERNEL_STACK_KB,

	MEMCG_SLAB_RECLAIMABLE,

	MEMCG_SLAB_UNRECLAIMABLE,

	MEMCG_NR_STAT,

};

mm/memcontrol.c

+4 −4
Original line number Diff line number Diff line
@@ -5198,8 +5198,8 @@ static int memory_stat_show(struct seq_file *m, void *v) 
	seq_printf(m, "kernel_stack %llu\n",

		   (u64)stat[MEMCG_KERNEL_STACK_KB] * 1024);

	seq_printf(m, "slab %llu\n",

		   (u64)(stat[MEMCG_SLAB_RECLAIMABLE] +

			 stat[MEMCG_SLAB_UNRECLAIMABLE]) * PAGE_SIZE);

		   (u64)(stat[NR_SLAB_RECLAIMABLE] +

			 stat[NR_SLAB_UNRECLAIMABLE]) * PAGE_SIZE);

	seq_printf(m, "sock %llu\n",

		   (u64)stat[MEMCG_SOCK] * PAGE_SIZE);
@@ -5223,9 +5223,9 @@ static int memory_stat_show(struct seq_file *m, void *v) 
	}



	seq_printf(m, "slab_reclaimable %llu\n",

		   (u64)stat[MEMCG_SLAB_RECLAIMABLE] * PAGE_SIZE);

		   (u64)stat[NR_SLAB_RECLAIMABLE] * PAGE_SIZE);

	seq_printf(m, "slab_unreclaimable %llu\n",

		   (u64)stat[MEMCG_SLAB_UNRECLAIMABLE] * PAGE_SIZE);

		   (u64)stat[NR_SLAB_UNRECLAIMABLE] * PAGE_SIZE);



	/* Accumulated memory events */

mm/slab.h

+2 −2
Original line number Diff line number Diff line
@@ -287,7 +287,7 @@ static __always_inline int memcg_charge_slab(struct page *page, 


	memcg_kmem_update_page_stat(page,

			(s->flags & SLAB_RECLAIM_ACCOUNT) ?

			MEMCG_SLAB_RECLAIMABLE : MEMCG_SLAB_UNRECLAIMABLE,

			NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,

			1 << order);

	return 0;

}
@@ -300,7 +300,7 @@ static __always_inline void memcg_uncharge_slab(struct page *page, int order, 


	memcg_kmem_update_page_stat(page,

			(s->flags & SLAB_RECLAIM_ACCOUNT) ?

			MEMCG_SLAB_RECLAIMABLE : MEMCG_SLAB_UNRECLAIMABLE,

			NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,

			-(1 << order));

	memcg_kmem_uncharge(page, order);

}