Eric Lee / linux-smarc-t335x-v3.2

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Commit 5d3bc2709114b416cab588c577e02c2470e40a6c

Authored by Minchan Kim
Committed by Linus Torvalds
1 parent a6f9edd65b

mm: fix NUMA accounting in numastat.txt 

In Documentation/numastat.txt, it confused me.  For example, there are
nodes [0,1] in system.

barrios:~$ cat /proc/zoneinfo | egrep 'numa|zone'
Node 0, zone	DMA
	numa_hit	33226
	numa_miss	1739
	numa_foreign	27978
	..
	..
Node 1, zone	DMA
	numa_hit	307
	numa_miss	46900
	numa_foreign	0

1) In node 0,  NUMA_MISS means it wanted to allocate page
in node 1 but ended up with page in node 0

2) In node 0, NUMA_FOREIGN means it wanted to allocate page
in node 0 but ended up with page from Node 1.

But now, numastat explains it oppositely about (MISS, FOREIGN).
Let's fix up with viewpoint of zone.

Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Showing 1 changed file with 4 additions and 4 deletions Side-by-side Diff

Documentation/numastat.txt
Diff comments   View file @ 5d3bc27
... ... @@ -7,10 +7,10 @@
7 7  
8 8 numa_hit A process wanted to allocate memory from this node,
9 9 and succeeded.
10   -numa_miss A process wanted to allocate memory from this node,
11   - but ended up with memory from another.
12   -numa_foreign A process wanted to allocate on another node,
13   - but ended up with memory from this one.
  10 +numa_miss A process wanted to allocate memory from another node,
  11 + but ended up with memory from this node.
  12 +numa_foreign A process wanted to allocate on this node,
  13 + but ended up with memory from another one.
14 14 local_node A process ran on this node and got memory from it.
15 15 other_node A process ran on this node and got memory from another node.
16 16 interleave_hit Interleaving wanted to allocate from this node