linux-toradex.git/tools/vm, branch v4.10-rc7

tools/vm/page_owner: increase temporary buffer size

2016-07-26T23:19:19+00:00

Page owner will be changed to store more deep stacktrace so current
temporary buffer size isn't enough.  Increase it.

Link: http://lkml.kernel.org/r/1464230275-25791-5-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Joonsoo Kim 
Acked-by: Vlastimil Babka 
Cc: Mel Gorman 
Cc: Minchan Kim 
Cc: Alexander Potapenko 
Cc: Hugh Dickins 
Cc: Michal Hocko 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/slabinfo: fix an unintentional printf

2016-07-23T01:25:54+00:00

The curly braces are missing here so we print stuff unintentionally.

Fixes: 9da4714a2d44 ('slub: slabinfo update for cmpxchg handling')
Link: http://lkml.kernel.org/r/20160715211243.GE19522@mwanda
Signed-off-by: Dan Carpenter 
Acked-by: Christoph Lameter 
Cc: Sergey Senozhatsky 
Cc: Colin Ian King 
Cc: Laura Abbott 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/slabinfo: fix spelling mistake: "Ocurrences" -> "Occurrences"

2016-06-25T00:23:52+00:00

trivial fix to spelling mistake

Link: http://lkml.kernel.org/r/1466672144-831-1-git-send-email-colin.king@canonical.com
Signed-off-by: Colin Ian King 
Acked-by: Christoph Lameter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/page-types.c: avoid memset() in walk_pfn() when count == 1

2016-03-17T22:09:34+00:00

I found that page-types is very slow and my testing shows many timeout
errors.  Here's an example with a simple program allocating 1000 thps.

  $ time ./page-types -p $(pgrep -f test_alloc)
  ...
  real    0m17.201s
  user    0m16.889s
  sys     0m0.312s

Most of time is spent in memset().  Currently memset() clears over whole
buffer for every walk_pfn() call, which is inefficient when walk_pfn()
is called from walk_vma(), because in that case walk_pfn() is called for
each pfn.  So this patch limits the zero initialization only for the
first element.

  $ time ./page-types.patched -p $(pgrep -f test_alloc)
  ...
  real    0m0.182s
  user    0m0.046s
  sys     0m0.135s

Fixes: 954e95584579 ("tools/vm/page-types.c: add memory cgroup dumping and filtering")
Signed-off-by: Naoya Horiguchi 
Suggested-by: Konstantin Khlebnikov 
Cc: Vladimir Davydov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/page-types.c: add memory cgroup dumping and filtering

2016-03-17T22:09:34+00:00

This adds two command line keys:

 -c|--cgroup path|@inode	Walk only pages owned by this memory cgroup
 -C|--list-cgroup		Show memory cgroup inodes

[vdavydov@virtuozzo.com: opt_cgroup should be uint64_t.  Fix conflicts with "tools/vm/page-types.c: support swap entry"]
Signed-off-by: Konstantin Khlebnikov 
Cc: Naoya Horiguchi 
Reviewed-by: Vladimir Davydov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/page-types.c: support swap entry

2016-03-17T22:09:34+00:00

/proc/pid/pagemap (pte_to_pagemap_entry() internally) already reports
about swap entry, so let's make the in-kernel utility aware of it.

Signed-off-by: Naoya Horiguchi 
Cc: Vladimir Davydov 
Cc: Konstantin Khlebnikov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

slub: convert SLAB_DEBUG_FREE to SLAB_CONSISTENCY_CHECKS

2016-03-15T23:55:16+00:00

SLAB_DEBUG_FREE allows expensive consistency checks at free to be turned
on or off.  Expand its use to be able to turn off all consistency
checks.  This gives a nice speed up if you only want features such as
poisoning or tracing.

Credit to Mathias Krause for the original work which inspired this
series

Signed-off-by: Laura Abbott 
Acked-by: Christoph Lameter 
Cc: Pekka Enberg 
Cc: David Rientjes 
Cc: Joonsoo Kim 
Cc: Kees Cook 
Cc: Mathias Krause 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/page-types.c: support KPF_IDLE

2015-11-21T00:17:32+00:00

PageIdle is exported in include/uapi/linux/kernel-page-flags.h, so let's
make page-types.c tool handle it.

Signed-off-by: Naoya Horiguchi 
Reviewed-by: Vladimir Davydov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/slabinfo: gnuplot slabifo extended stat

2015-11-06T03:34:48+00:00

GNUplot `slabinfo -X' stats, collected, for example, using the
following command:
  while [ 1 ]; do slabinfo -X >> stats; sleep 1; done

`slabinfo-gnuplot.sh stats' pre-processes collected records
and generate graphs (totals, slabs sorted by size, slabs
sorted by size).

Graphs can be [individually] regenerate with different samples
range and graph width-heigh (-r %d,%d and -s %d,%d options).

To visually compare N `totals' graphs:
  slabinfo-gnuplot.sh -t FILE1-totals FILE2-totals ... FILEN-totals

Signed-off-by: Sergey Senozhatsky 
Cc: Christoph Lameter 
Cc: Pekka Enberg 
Cc: David Rientjes 
Cc: Joonsoo Kim 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/slabinfo: cosmetic globals cleanup

2015-11-06T03:34:48+00:00

checkpatch.pl complains about globals being explicitly zeroed
out: "ERROR: do not initialise globals to 0 or NULL".

New globals, introduced in this patch set, have no explicit 0
initialization; clean up the old ones to make it less hairy.

Signed-off-by: Sergey Senozhatsky 
Cc: Christoph Lameter 
Cc: Pekka Enberg 
Cc: David Rientjes 
Cc: Joonsoo Kim 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds