1. 26 Jul, 2016 1 commit
  2. 22 Jul, 2016 1 commit
  3. 24 Jun, 2016 1 commit
  4. 17 Mar, 2016 3 commits
  5. 15 Mar, 2016 1 commit
  6. 20 Nov, 2015 1 commit
  7. 05 Nov, 2015 8 commits
    • Sergey Senozhatsky's avatar
      tools/vm/slabinfo: gnuplot slabifo extended stat · 4a981abd
      Sergey Senozhatsky authored
      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: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      4a981abd
    • Sergey Senozhatsky's avatar
      tools/vm/slabinfo: cosmetic globals cleanup · 2cee611a
      Sergey Senozhatsky authored
      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: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2cee611a
    • Sergey Senozhatsky's avatar
      tools/vm/slabinfo: output sizes in bytes · a8ea0bf1
      Sergey Senozhatsky authored
      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         10689376
      
       Per Object        Average              Min              Max
       -----------------------------------------------------------
       Memory                585                8             8192
       User                  583                8             8192
       Loss                    2                0               64
      
       Slabs 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 a
      
       Slabs 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 a
      
      Besides, 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: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a8ea0bf1
    • Sergey Senozhatsky's avatar
      tools/vm/slabinfo: introduce extended totals mode · 016c6cdf
      Sergey Senozhatsky authored
      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       30.4M
      
        Per Object   Average         Min         Max
        ---------------------------------------------
        Memory           587           8        8.1K
        User             584           8        8.1K
        Loss               2           0          64
      
        Slabs 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 a
      
        Slabs 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 a
      Signed-off-by: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      016c6cdf
    • Sergey Senozhatsky's avatar
      tools/vm/slabinfo: fix alternate opts names · 0d00bf58
      Sergey Senozhatsky authored
      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: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0d00bf58
    • Sergey Senozhatsky's avatar
      tools/vm/slabinfo: sort slabs by loss · 2651f6e7
      Sergey Senozhatsky authored
      Introduce opt "-L|--sort-loss" to sort and output slabs by
      loss (waste) in slabcache().
      Signed-off-by: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2651f6e7
    • Sergey Senozhatsky's avatar
      tools/vm/slabinfo: limit the number of reported slabs · 4980a963
      Sergey Senozhatsky authored
      Introduce opt "-N|--lines=K" to limit the number of slabs
      being reported in output_slabs().
      Signed-off-by: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      4980a963
    • Sergey Senozhatsky's avatar
      tools/vm/slabinfo: use getopt no_argument/optional_argument · 2b100755
      Sergey Senozhatsky authored
      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         10689376
      
       Per Object        Average              Min              Max
       -----------------------------------------------------------
       Memory                585                8             8192
       User                  583                8             8192
       Loss                    2                0               64
      
       Slabs 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 a
      
       Slabs 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 a
      
      The 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 stats
      
      The last command will produce 3 png files (and 3 stats files)
      -- graph of slabinfo totals
      -- graph of slabs by size
      -- graph of slabs by loss
      
      It'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-totals2
      
      This also, technically, supports ktest. Upload new slabinfo to target,
      collect the stats and give the resulting stats file to slabinfo-gnuplot
      
      This patch (of 8):
      
      Use getopt constants in `struct option' ->has_arg instead of numerical
      representations.
      Signed-off-by: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2b100755
  8. 22 Sep, 2015 1 commit
    • Arnaldo Carvalho de Melo's avatar
      tools vm: Fix build due to removal of tools/lib/api/fs/debugfs.h · f6489bc2
      Arnaldo Carvalho de Melo authored
      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: default avatarVinson Lee <vlee@twopensource.com>
      Tested-by: default avatarVinson Lee <vlee@twopensource.com>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Matt Fleming <matt@codeblueprint.co.uk>
      Cc: Raphael Beamonte <raphael.beamonte@gmail.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Fixes: 60a1133a ("tools lib api fs: Remove debugfs, tracefs and findfs objects")
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f6489bc2
  9. 08 Sep, 2015 2 commits
  10. 14 May, 2015 1 commit
  11. 12 May, 2015 1 commit
  12. 11 Feb, 2015 1 commit
  13. 13 Dec, 2014 1 commit
    • Joonsoo Kim's avatar
      mm/page_owner: keep track of page owners · 48c96a36
      Joonsoo Kim authored
      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 <alexn@dsv.su.se>
      Mel Gorman <mgorman@suse.de>
      Dave Hansen <dave@linux.vnet.ibm.com>
      Minchan Kim <minchan@kernel.org>
      Michal Nazarewicz <mina86@mina86.com>
      Andrew Morton <akpm@linux-foundation.org>
      Jungsoo Son <jungsoo.son@lge.com>
      Signed-off-by: default avatarJoonsoo Kim <iamjoonsoo.kim@lge.com>
      Cc: Mel Gorman <mgorman@suse.de>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Minchan Kim <minchan@kernel.org>
      Cc: Dave Hansen <dave@sr71.net>
      Cc: Michal Nazarewicz <mina86@mina86.com>
      Cc: Jungsoo Son <jungsoo.son@lge.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      48c96a36
  14. 09 Oct, 2014 1 commit
  15. 04 Jun, 2014 1 commit
  16. 07 Apr, 2014 1 commit
    • Konstantin Khlebnikov's avatar
      tools/vm/page-types.c: page-cache sniffing feature · 65a6a410
      Konstantin Khlebnikov authored
      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 <path>
      
      If <path> 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 flush
      
      usage 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   1254
      Signed-off-by: default avatarKonstantin Khlebnikov <koct9i@gmail.com>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Fengguang Wu <fengguang.wu@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      65a6a410
  17. 16 Dec, 2013 1 commit
    • Borislav Petkov's avatar
      tools/: Convert to new topic libraries · 553873e1
      Borislav Petkov authored
      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: default avatarBorislav Petkov <bp@suse.de>
      Acked-by: default avatarIngo Molnar <mingo@kernel.org>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Arjan van de Ven <arjan@linux.intel.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@gmail.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Robert Richter <rric@kernel.org>
      Cc: Stanislav Fomichev <stfomichev@yandex-team.ru>
      Cc: Stephane Eranian <eranian@google.com>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Link: http://lkml.kernel.org/r/1386605664-24041-2-git-send-email-bp@alien8.deSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      553873e1
  18. 12 Nov, 2013 1 commit
    • Naoya Horiguchi's avatar
      tools/vm/page-types.c: support KPF_SOFTDIRTY bit · 46c77e2b
      Naoya Horiguchi authored
      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: default avatarNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
      Cc: Wu Fengguang <fengguang.wu@intel.com>
      Cc: Pavel Emelyanov <xemul@parallels.com>
      Cc: Cyrill Gorcunov <gorcunov@openvz.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      46c77e2b
  19. 15 Mar, 2013 1 commit
  20. 05 Feb, 2013 1 commit
  21. 25 Oct, 2012 1 commit
  22. 13 Oct, 2012 1 commit
  23. 02 Jul, 2012 1 commit
  24. 29 May, 2012 2 commits
  25. 28 Mar, 2012 2 commits