linux-toradex.git/tools/vm, branch toradex_5.3.y

tools/vm/slabinfo: add sorting info to help menu

2019-07-12T18:05:46+00:00

Passing more than one sorting option has undefined behaviour.

Add an explicit statement as such to the help menu, this also has the
advantage of highlighting all the sorting options.

Link: http://lkml.kernel.org/r/20190426022622.4089-5-tobin@kernel.org
Signed-off-by: Tobin C. Harding 
Cc: Alexander Duyck 
Cc: Brendan Gregg ,
Cc: Christoph Lameter 
Cc: David Rientjes 
Cc: Jesper Dangaard Brouer 
Cc: Joonsoo Kim 
Cc: Mel Gorman 
Cc: Michal Hocko 
Cc: Pekka Enberg 
Cc: Qian Cai 
Cc: Tejun Heo 
Cc: Vlastimil Babka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/slabinfo: add option to sort by partial slabs

2019-07-12T18:05:46+00:00

We would like to get a better view of the level of fragmentation within
the SLUB allocator.  Total number of partial slabs is an indicator of
fragmentation.

Add a command line option (-P | --partial) to sort the slab list by total
number of partial slabs.

Link: http://lkml.kernel.org/r/20190426022622.4089-4-tobin@kernel.org
Signed-off-by: Tobin C. Harding 
Cc: Alexander Duyck 
Cc: Brendan Gregg ,
Cc: Christoph Lameter 
Cc: David Rientjes 
Cc: Jesper Dangaard Brouer 
Cc: Joonsoo Kim 
Cc: Mel Gorman 
Cc: Michal Hocko 
Cc: Pekka Enberg 
Cc: Qian Cai 
Cc: Tejun Heo 
Cc: Vlastimil Babka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/slabinfo: add partial slab listing to -X

2019-07-12T18:05:46+00:00

We would like to see how fragmented the SLUB allocator is, one window into
fragmentation is the total number of partial slabs.

Currently `slabinfo -X` shows slabs sorted by loss and by size.  We can
use this option to also show slabs sorted by number of partial slabs.

Option '-X' can be used in conjunction with '-N' to control the number of
slabs shown e.g.  list of top 5 slabs:

	slabinfo -X -N5

Add list of slabs ordered by number of partial slabs to output of
`slabinfo -X`.

Link: http://lkml.kernel.org/r/20190426022622.4089-3-tobin@kernel.org
Signed-off-by: Tobin C. Harding 
Cc: Alexander Duyck 
Cc: Brendan Gregg ,
Cc: Christoph Lameter 
Cc: David Rientjes 
Cc: Jesper Dangaard Brouer 
Cc: Joonsoo Kim 
Cc: Mel Gorman 
Cc: Michal Hocko 
Cc: Pekka Enberg 
Cc: Qian Cai 
Cc: Tejun Heo 
Cc: Vlastimil Babka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/slabinfo: order command line options

2019-07-12T18:05:46+00:00

During recent discussion on LKML over SLAB vs SLUB it was suggested by
Jesper that it would be nice to have a tool to view the current
fragmentation of the slab allocators.  CC list for this set is taken
from that thread.

For SLUB we have all the information for this already exposed by the
kernel and also we have a userspace tool for displaying this info:

	tools/vm/slabinfo.c

Extend slabinfo to improve the fragmentation information by enabling
sorting of caches by number of partial slabs.

Also add cache list sorted in this manner to the output of `slabinfo -X`.

This patch (of 4):

get_opt() has a spurious character within the option string.  Remove it
and reorder the options in alphabetic order so that it is easier to keep
the options correct.  Use the same ordering for command help output and
long option handling code.

Link: http://lkml.kernel.org/r/20190426022622.4089-2-tobin@kernel.org
Signed-off-by: Tobin C. Harding 
Cc: Jesper Dangaard Brouer 
Cc: Pekka Enberg 
Cc: Vlastimil Babka 
Cc: Christoph Lameter 
Cc: David Rientjes 
Cc: Joonsoo Kim 
Cc: Tejun Heo 
Cc: Qian Cai 
Cc: Mel Gorman 
Cc: Alexander Duyck 
Cc: Michal Hocko 
Cc: Brendan Gregg ,
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282

2019-06-05T15:36:37+00:00

Based on 1 normalized pattern(s):

  this software is licensed under the terms of the gnu general public
  license version 2 as published by the free software foundation and
  may be copied distributed and modified under those terms this
  program is distributed in the hope that it will be useful but
  without any warranty without even the implied warranty of
  merchantability or fitness for a particular purpose see the gnu
  general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 285 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Alexios Zavras 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de
Signed-off-by: Greg Kroah-Hartman

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 276

2019-06-05T15:36:36+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation version 2 this program is distributed
  in the hope that it will be useful but without any warranty without
  even the implied warranty of merchantability or fitness for a
  particular purpose see the gnu general public license for more
  details you should find a copy of v2 of the gnu general public
  license somewhere on your linux system if not write to the free
  software foundation inc 59 temple place suite 330 boston ma 02111
  1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 1 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Reviewed-by: Alexios Zavras 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141900.073926682@linutronix.de
Signed-off-by: Greg Kroah-Hartman

tools/vm/slabinfo: clean up usage menu debug items

2019-03-06T05:07:20+00:00

Attempt to make the usage comment for debug options a little cleaner.

Link: http://lkml.kernel.org/r/20190212001219.27769-5-tobin@kernel.org
Signed-off-by: Tobin C. Harding 
Acked-by: Christoph Lameter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/slabinfo: align usage output columns

2019-03-06T05:07:20+00:00

Usage message uses spaces not tabspaces, a few tabspaces have snuck in
making the columns not align correctly when output.

Align usage output columns using spaces instead of tabspaces.

Link: http://lkml.kernel.org/r/20190212001219.27769-4-tobin@kernel.org
Signed-off-by: Tobin C. Harding 
Acked-by: Christoph Lameter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/slabinfo: put options in alphabetic order

2019-03-06T05:07:20+00:00

Primarily the usage message lists options in alphabetic order however
there are a bunch of the options that are not in alphabetic order.

Put options in alphabetic order.

Link: http://lkml.kernel.org/r/20190212001219.27769-3-tobin@kernel.org
Signed-off-by: Tobin C. Harding 
Acked-by: Christoph Lameter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/vm/slabinfo: update options in usage message

2019-03-06T05:07:20+00:00

Currently usage message list only a subset of the available options.
should list them all.

Update options in usage massage to include all available options.

Link: http://lkml.kernel.org/r/20190212001219.27769-2-tobin@kernel.org
Signed-off-by: Tobin C. Harding 
Acked-by: Christoph Lameter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds