27 Jul, 2016
1 commit
-
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
23 Jul, 2016
1 commit
-
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
25 Jun, 2016
1 commit
-
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
18 Mar, 2016
3 commits
-
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 $(pgrep -f test_alloc)
...
real 0m17.201s
user 0m16.889s
sys 0m0.312sMost of time is spent in memset(). Currently memset() clears over whole
buffer for every walk_pfn() call, which is inefficient when walk_pfn()
is called from walk_vma(), because in that case walk_pfn() is called for
each pfn. So this patch limits the zero initialization only for the
first element.$ time ./page-types.patched -p $(pgrep -f test_alloc)
...
real 0m0.182s
user 0m0.046s
sys 0m0.135sFixes: 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 -
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 -
/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
16 Mar, 2016
1 commit
-
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
seriesSigned-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
21 Nov, 2015
1 commit
-
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
06 Nov, 2015
8 commits
-
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-totalsSigned-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 -
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 -
Introduce "-B|--Bytes" opt to disable store_size() dynamic
size scaling and report size in bytes instead.This `expands' the interface a bit, it's impossible to use
printf("%6s") anymore to output sizes.Example:
slabinfo -X -N 2
Slabcache Totals
----------------
Slabcaches : 91 Aliases : 119->69 Active: 63
Memory used: 199798784 # Loss : 10689376 MRatio: 5%
# Objects : 324301 # PartObj: 18151 ORatio: 5%Per Cache Average Min Max Total
----------------------------------------------------------------------------
#Objects 5147 1 89068 324301
#Slabs 199 1 3886 12537
#PartSlab 12 0 240 778
%PartSlab 32% 0% 100% 6%
PartObjs 5 0 4569 18151
% PartObj 26% 0% 100% 5%
Memory 3171409 8192 127336448 199798784
Used 3001736 160 121429728 189109408
Loss 169672 0 5906720 10689376Per Object Average Min Max
-----------------------------------------------------------
Memory 585 8 8192
User 583 8 8192
Loss 2 0 64Slabs sorted by size
--------------------
Name Objects Objsize Space Slabs/Part/Cpu O/S O %Fr %Ef Flg
ext4_inode_cache 69948 1736 127336448 3871/0/15 18 3 0 95 a
dentry 89068 288 26058752 3164/0/17 28 1 0 98 aSlabs sorted by loss
--------------------
Name Objects Objsize Loss Slabs/Part/Cpu O/S O %Fr %Ef Flg
ext4_inode_cache 69948 1736 5906720 3871/0/15 18 3 0 95 a
inode_cache 11628 864 537472 642/0/4 18 2 0 94 aBesides, store_size() does not use powers of two for G/M/K
if (value > 1000000000UL) {
divisor = 100000000UL;
trailer = 'G';
} else if (value > 1000000UL) {
divisor = 100000UL;
trailer = 'M';
} else if (value > 1000UL) {
divisor = 100;
trailer = 'K';
}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 -
Add "-X|--Xtotals" opt to output extended totals summary,
which includes:
-- totals summary
-- slabs sorted by size
-- slabs sorted by loss (waste)Example:
=======slabinfo --X -N 1
Slabcache Totals
----------------
Slabcaches : 91 Aliases : 120->69 Active: 65
Memory used: 568.3M # Loss : 30.4M MRatio: 5%
# Objects : 920.1K # PartObj: 161.2K ORatio: 17%Per Cache Average Min Max Total
---------------------------------------------------------
#Objects 14.1K 1 227.8K 920.1K
#Slabs 533 1 11.7K 34.7K
#PartSlab 86 0 4.3K 5.6K
%PartSlab 24% 0% 100% 16%
PartObjs 17 0 129.3K 161.2K
% PartObj 17% 0% 100% 17%
Memory 8.7M 8.1K 384.7M 568.3M
Used 8.2M 160 366.5M 537.9M
Loss 468.8K 0 18.2M 30.4MPer Object Average Min Max
---------------------------------------------
Memory 587 8 8.1K
User 584 8 8.1K
Loss 2 0 64Slabs sorted by size
----------------------
Name Objects Objsize Space Slabs/Part/Cpu O/S O %Fr %Ef Flg
ext4_inode_cache 211142 1736 384.7M 11732/40/10 18 3 0 95 aSlabs sorted by loss
----------------------
Name Objects Objsize Loss Slabs/Part/Cpu O/S O %Fr %Ef Flg
ext4_inode_cache 211142 1736 18.2M 11732/40/10 18 3 0 95 aSigned-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 -
Fix mismatches between usage() output and real opts[] options. Add
missing alternative opt names, e.g., '-S' had no '--Size' opts[] entry,
etc.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 -
Introduce opt "-L|--sort-loss" to sort and output slabs by
loss (waste) in slabcache().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 -
Introduce opt "-N|--lines=K" to limit the number of slabs
being reported in output_slabs().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 -
This patchset adds 'extended' slabinfo mode that provides additional
information:-- totals summary
-- slabs sorted by size
-- slabs sorted by loss (waste)The patches also introduces several new slabinfo options to limit the
number of slabs reported, sort slabs by loss (waste); and some fixes.Extended output example (slabinfo -X -N 2):
Slabcache Totals
----------------
Slabcaches : 91 Aliases : 119->69 Active: 63
Memory used: 199798784 # Loss : 10689376 MRatio: 5%
# Objects : 324301 # PartObj: 18151 ORatio: 5%Per Cache Average Min Max Total
----------------------------------------------------------------------------
#Objects 5147 1 89068 324301
#Slabs 199 1 3886 12537
#PartSlab 12 0 240 778
%PartSlab 32% 0% 100% 6%
PartObjs 5 0 4569 18151
% PartObj 26% 0% 100% 5%
Memory 3171409 8192 127336448 199798784
Used 3001736 160 121429728 189109408
Loss 169672 0 5906720 10689376Per Object Average Min Max
-----------------------------------------------------------
Memory 585 8 8192
User 583 8 8192
Loss 2 0 64Slabs sorted by size
--------------------
Name Objects Objsize Space Slabs/Part/Cpu O/S O %Fr %Ef Flg
ext4_inode_cache 69948 1736 127336448 3871/0/15 18 3 0 95 a
dentry 89068 288 26058752 3164/0/17 28 1 0 98 aSlabs sorted by loss
--------------------
Name Objects Objsize Loss Slabs/Part/Cpu O/S O %Fr %Ef Flg
ext4_inode_cache 69948 1736 5906720 3871/0/15 18 3 0 95 a
inode_cache 11628 864 537472 642/0/4 18 2 0 94 aThe last patch in the series addresses Linus' comment from
http://marc.info/?l=linux-mm&m=144148518703321&w=2(well, it's been some time. sorry.)
gnuplot script takes the slabinfo records file, where every record is a `slabinfo -X'
output. So the basic workflow is, for example, as follows:while [ 1 ]; do slabinfo -X -N 2 >> stats; sleep 1; done
^C
slabinfo-gnuplot.sh statsThe last command will produce 3 png files (and 3 stats files)
-- graph of slabinfo totals
-- graph of slabs by size
-- graph of slabs by lossIt's also possible to select a range of records for plotting (a range of collected
slabinfo outputs) via `-r 10,100` (for example); and compare totals from several
measurements (to visially compare slabs behaviour (10,50 range)) using
pre-parsed totals files:
slabinfo-gnuplot.sh -r 10,50 -t stats-totals1 .. stats-totals2This also, technically, supports ktest. Upload new slabinfo to target,
collect the stats and give the resulting stats file to slabinfo-gnuplotThis patch (of 8):
Use getopt constants in `struct option' ->has_arg instead of numerical
representations.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
23 Sep, 2015
1 commit
-
There were some changes in how this debugfs mounting helper is
implemented/exported and we forgot to check if there were other users
besides perf, fix it.Need to do a make -C tools/ everytime we do changes to
tools/{lib,include} and other places where we're moving things from
tools/perf/ to be used by other tools/ living code.Fixed:
$ make -C tools/vm
make: Entering directory '/home/git/linux/tools/vm'
make -C ../lib/api
make[1]: Entering directory '/home/git/linux/tools/lib/api'
CC fd/array.o
LD fd/libapi-in.o
CC fs/fs.o
CC fs/tracing_path.o
LD fs/libapi-in.o
CC cpu.o
LD libapi-in.o
AR libapi.a
make[1]: Leaving directory '/home/git/linux/tools/lib/api'
gcc -Wall -Wextra -I../lib/ -o page-types page-types.c ../lib/api/libapi.a
make: Leaving directory '/home/git/linux/tools/vm'
$Reported-by: Vinson Lee
Tested-by: Vinson Lee
Cc: Steven Rostedt
Cc: Jiri Olsa
Cc: Matt Fleming
Cc: Raphael Beamonte
Cc: H. Peter Anvin
Cc: Peter Zijlstra
Cc: David Ahern
Cc: Thomas Gleixner
Cc: Namhyung Kim
Fixes: 60a1133a5b39 ("tools lib api fs: Remove debugfs, tracefs and findfs objects")
Signed-off-by: Arnaldo Carvalho de Melo
09 Sep, 2015
2 commits
-
This patch sets bit 56 in pagemap if this page is mapped only once. It
allows to detect exclusively used pages without exposing PFN:present file exclusive state
0 0 0 non-present
1 1 0 file page mapped somewhere else
1 1 1 file page mapped only here
1 0 0 anon non-CoWed page (shared with parent/child)
1 0 1 anon CoWed page (or never forked)CoWed pages in (MAP_FILE | MAP_PRIVATE) areas are anon in this context.
MMap-exclusive bit doesn't reflect potential page-sharing via swapcache:
page could be mapped once but has several swap-ptes which point to it.
Application could detect that by swap bit in pagemap entry and touch that
pte via /proc/pid/mem to get real information.See http://lkml.kernel.org/r/CAEVpBa+_RyACkhODZrRvQLs80iy0sqpdrd0AaP_-tgnX3Y9yNQ@mail.gmail.com
Requested by Mark Williamson.
[akpm@linux-foundation.org: fix spello]
Signed-off-by: Konstantin Khlebnikov
Reviewed-by: Mark Williamson
Tested-by: Mark Williamson
Reviewed-by: Naoya Horiguchi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch removes page-shift bits (scheduled to remove since 3.11) and
completes migration to the new bit layout. Also it cleans messy macro.Signed-off-by: Konstantin Khlebnikov
Reviewed-by: Naoya Horiguchi
Cc: Mark Williamson
Tested-by: Mark Williamson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
15 May, 2015
1 commit
-
libabikfs.a doesn't exist anymore, so we now need to link with libapi.a.
Signed-off-by: Andi Kleen
Cc: Naoya Horiguchi
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
12 Feb, 2015
1 commit
-
Add KPF_ZERO_PAGE flag for zero_page, so that userspace processes can
detect zero_page in /proc/kpageflags, and then do memory analysis more
accurately.Signed-off-by: Yalin Wang
Acked-by: Kirill A. Shutemov
Cc: Konstantin Khlebnikov
Cc: Naoya Horiguchi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
14 Dec, 2014
1 commit
-
This is the page owner tracking code which is introduced so far ago. It
is resident on Andrew's tree, though, nobody tried to upstream so it
remain as is. Our company uses this feature actively to debug memory leak
or to find a memory hogger so I decide to upstream this feature.This functionality help us to know who allocates the page. When
allocating a page, we store some information about allocation in extra
memory. Later, if we need to know status of all pages, we can get and
analyze it from this stored information.In previous version of this feature, extra memory is statically defined in
struct page, but, in this version, extra memory is allocated outside of
struct page. It enables us to turn on/off this feature at boottime
without considerable memory waste.Although we already have tracepoint for tracing page allocation/free,
using it to analyze page owner is rather complex. We need to enlarge the
trace buffer for preventing overlapping until userspace program launched.
And, launched program continually dump out the trace buffer for later
analysis and it would change system behaviour with more possibility rather
than just keeping it in memory, so bad for debug.Moreover, we can use page_owner feature further for various purposes. For
example, we can use it for fragmentation statistics implemented in this
patch. And, I also plan to implement some CMA failure debugging feature
using this interface.I'd like to give the credit for all developers contributed this feature,
but, it's not easy because I don't know exact history. Sorry about that.
Below is people who has "Signed-off-by" in the patches in Andrew's tree.Contributor:
Alexander Nyberg
Mel Gorman
Dave Hansen
Minchan Kim
Michal Nazarewicz
Andrew Morton
Jungsoo SonSigned-off-by: Joonsoo Kim
Cc: Mel Gorman
Cc: Johannes Weiner
Cc: Minchan Kim
Cc: Dave Hansen
Cc: Michal Nazarewicz
Cc: Jungsoo Son
Cc: Ingo Molnar
Cc: Joonsoo Kim
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
10 Oct, 2014
1 commit
-
Always mark pages with PageBalloon even if balloon compaction is disabled
and expose this mark in /proc/kpageflags as KPF_BALLOON.Also this patch adds three counters into /proc/vmstat: "balloon_inflate",
"balloon_deflate" and "balloon_migrate". They accumulate balloon
activity. Current size of balloon is (balloon_inflate - balloon_deflate)
pages.All generic balloon code now gathered under option CONFIG_MEMORY_BALLOON.
It should be selected by ballooning driver which wants use this feature.
Currently virtio-balloon is the only user.Signed-off-by: Konstantin Khlebnikov
Cc: Rafael Aquini
Cc: Andrey Ryabinin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
05 Jun, 2014
1 commit
-
Recently added page-cache dumping is known to be a little bit racy.
But after race with truncate it just dies due to unhandled SIGBUS
when it tries to poke pages beyond the new end of file.
This patch adds handler for SIGBUS which skips the rest of the file.Signed-off-by: Konstantin Khlebnikov
Cc: Naoya Horiguchi
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
08 Apr, 2014
1 commit
-
After this patch 'page-types' can walk over a file's mappings and
analyze populated page cache pages mostly without disturbing its state.It maps chunk of file, marks VMA as MADV_RANDOM to turn off readahead,
pokes VMA via mincore() to determine cached pages, triggers page-fault
only for them, and finally gathers information via pagemap/kpageflags.
Before unmap it marks VMA as MADV_SEQUENTIAL for ignoring reference
bits.usage: page-types -f
If is directory it will analyse all files in all subdirectories.
Symlinks are not followed as well as mount points. Hardlinks aren't
handled, they'll be dumped as many times as they are found. Recursive
walk brings all dentries into dcache and populates page cache of
block-devices aka 'Buffers'.Probably it's worth to add ioctl for dumping file page cache as array of
PFNs as a replacement for this hackish juggling with
mmap/madvise/mincore/pagemap. Also recursive walk could be replaced
with dumping cached inodes via some ioctl or debugfs interface followed
by openning them via open_by_handle_at, this would fix hardlinks
handling and unneeded population of dcache and buffers. This interface
might be used as data source for constructing readahead plans and for
background optimizations of actively used files.collateral changes:
+ fix 64-bit LFS: define _FILE_OFFSET_BITS instead of _LARGEFILE64_SOURCE
+ replace lseek + read with single pread
+ make show_page_range() reusable after flushusage example:
~/src/linux/tools/vm$ sudo ./page-types -L -f page-types
foffset offset flags
page-types Inode: 2229277 Size: 89065 (22 pages)
Modify: Tue Feb 25 12:00:59 2014 (162 seconds ago)
Access: Tue Feb 25 12:01:00 2014 (161 seconds ago)
0 3cbf3b __RU_lA____M________________________
1 38946a __RU_lA____M________________________
2 1a3cec __RU_lA____M________________________
3 1a8321 __RU_lA____M________________________
4 3af7cc __RU_lA____M________________________
5 1ed532 __RU_lA_____________________________
6 2e436a __RU_lA_____________________________
7 29a35e ___U_lA_____________________________
8 2de86e ___U_lA_____________________________
9 3bdfb4 ___U_lA_____________________________
10 3cd8a3 ___U_lA_____________________________
11 2afa50 ___U_lA_____________________________
12 2534c2 ___U_lA_____________________________
13 1b7a40 ___U_lA_____________________________
14 17b0be ___U_lA_____________________________
15 392b0c ___U_lA_____________________________
16 3ba46a __RU_lA_____________________________
17 397dc8 ___U_lA_____________________________
18 1f2a36 ___U_lA_____________________________
19 21fd30 __RU_lA_____________________________
20 2c35ba __RU_l______________________________
21 20f181 __RU_l______________________________flags page-count MB symbolic-flags long-symbolic-flags
0x000000000000002c 2 0 __RU_l______________________________ referenced,uptodate,lru
0x0000000000000068 11 0 ___U_lA_____________________________ uptodate,lru,active
0x000000000000006c 4 0 __RU_lA_____________________________ referenced,uptodate,lru,active
0x000000000000086c 5 0 __RU_lA____M________________________ referenced,uptodate,lru,active,mmap
total 22 0~/src/linux/tools/vm$ sudo ./page-types -f /
flags page-count MB symbolic-flags long-symbolic-flags
0x0000000000000028 21761 85 ___U_l______________________________ uptodate,lru
0x000000000000002c 127279 497 __RU_l______________________________ referenced,uptodate,lru
0x0000000000000068 74160 289 ___U_lA_____________________________ uptodate,lru,active
0x000000000000006c 84469 329 __RU_lA_____________________________ referenced,uptodate,lru,active
0x000000000000007c 1 0 __RUDlA_____________________________ referenced,uptodate,dirty,lru,active
0x0000000000000228 370 1 ___U_l___I__________________________ uptodate,lru,reclaim
0x0000000000000828 49 0 ___U_l_____M________________________ uptodate,lru,mmap
0x000000000000082c 126 0 __RU_l_____M________________________ referenced,uptodate,lru,mmap
0x0000000000000868 137 0 ___U_lA____M________________________ uptodate,lru,active,mmap
0x000000000000086c 12890 50 __RU_lA____M________________________ referenced,uptodate,lru,active,mmap
total 321242 1254Signed-off-by: Konstantin Khlebnikov
Cc: Arnaldo Carvalho de Melo
Cc: Fengguang Wu
Cc: Borislav Petkov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Dec, 2013
1 commit
-
Move debugfs.* to api/fs/. We have a common tools/lib/api/ place where
the Makefile lives and then we place the headers in subdirs.For example, all the fs-related stuff goes to tools/lib/api/fs/ from
which we get libapikfs.a (acme got almost the naming he wanted :-)) and
we link it into the tools which need it - in this case perf and
tools/vm/page-types.acme:
"Looking at the implementation, I think some tools can even link
directly to the .o files, avoiding the .a file altogether.But that is just an optimization/finer granularity tools/lib/
cherrypicking that toolers can make use of."Fixup documentation cleaning target while at it.
Signed-off-by: Borislav Petkov
Acked-by: Ingo Molnar
Cc: Adrian Hunter
Cc: Andi Kleen
Cc: Arjan van de Ven
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Pekka Enberg
Cc: Peter Zijlstra
Cc: Robert Richter
Cc: Stanislav Fomichev
Cc: Stephane Eranian
Cc: Steven Rostedt
Link: http://lkml.kernel.org/r/1386605664-24041-2-git-send-email-bp@alien8.de
Signed-off-by: Arnaldo Carvalho de Melo
13 Nov, 2013
1 commit
-
Soft dirty bit allows us to track which pages are written since the last
clear_ref (by "echo 4 > /proc/pid/clear_refs".) This is useful for
userspace applications to know their memory footprints.Note that the kernel exposes this flag via bit[55] of /proc/pid/pagemap,
and the semantics is not a default one (scheduled to be the default in the
near future.) However, it shifts to the new semantics at the first
clear_ref, and the users of soft dirty bit always do it before utilizing
the bit, so that's not a big deal. Users must avoid relying on the bit in
page-types before the first clear_ref.Signed-off-by: Naoya Horiguchi
Cc: Wu Fengguang
Cc: Pavel Emelyanov
Cc: Cyrill Gorcunov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 Mar, 2013
1 commit
-
page-flags.c had some older version of debugfs_mount copied from perf so
convert it to using the version in the tools library.Signed-off-by: Borislav Petkov
Cc: Ingo Molnar
Cc: Steven Rostedt
Cc: Wu Fengguang
Link: http://lkml.kernel.org/r/1361374353-30385-8-git-send-email-bp@alien8.de
Signed-off-by: Arnaldo Carvalho de Melo
05 Feb, 2013
1 commit
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There is no .gitignore in tools/vm, so 'git status' always show built
binaries. To ignore this, add .gitignore.Signed-off-by: Joonsoo Kim
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Oct, 2012
1 commit
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Fix tools/vm/page-types.c to use the UAPI variant of linux/kernel-page-flags.h
lest the following error appear:In file included from page-types.c:38:0:
../../include/linux/kernel-page-flags.h:4:42: fatal error:
uapi/linux/kernel-page-flags.h: No such file or directoryReported-by: Daniel Hazelton
Signed-off-by: David Howells
Reviewed-by: Fengguang Wu
Tested-by: Daniel Hazelton
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Oct, 2012
1 commit
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Signed-off-by: David Howells
Acked-by: Arnd Bergmann
Acked-by: Thomas Gleixner
Acked-by: Michael Kerrisk
Acked-by: Paul E. McKenney
Acked-by: Dave Jones
03 Jul, 2012
1 commit
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In function slab_stats(), if total_free is equal zero, it will error.
So fix it.Acked-by: Christoph Lameter
Signed-off-by: majianpeng
Signed-off-by: Pekka Enberg
30 May, 2012
2 commits
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Compiling page-type.c with a recent compiler produces many warnings,
mostly related to signed/unsigned comparisons. This patch cleans up most
of them.One remaining warning is about an unused parameter. The file
doesn't define a __unused macro (or the like) yet. This can be addressed
later.Signed-off-by: Ulrich Drepper
Acked-by: KOSAKI Motohiro
Acked-by: Fengguang Wu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Programs using /proc/kpageflags need to know about the various flags. The
provides them and the comments in the file
indicate that it is supposed to be used by user-level code. But the file
is not installed.Install the headers and mark the unstable flags as out-of-bounds. The
page-type tool is also adjusted to not duplicate the definitionsSigned-off-by: Ulrich Drepper
Acked-by: KOSAKI Motohiro
Acked-by: Fengguang Wu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
29 Mar, 2012
2 commits
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We have tools/vm/ folder for vm tools, so move slabinfo.c from tools/slub/
to tools/vm/Signed-off-by: Dave Young
Cc: Wu Fengguang
Acked-by: Christoph Lameter
Cc: Pekka Enberg
Cc: Frederic Weisbecker
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
tools/ is the better place for vm tools which are used by many people.
Moving them to tools also make them open to more users instead of hide in
Documentation folder.This patch moves page-types.c to tools/vm/page-types.c. Also add a
Makefile in tools/vm and fix two coding style problems: a) change const
arrary to 'const char * const', b) change a space to tab for indent.Signed-off-by: Dave Young
Acked-by: Wu Fengguang
Cc: Christoph Lameter
Cc: Pekka Enberg
Cc: Frederic Weisbecker
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
