Documentation/ABI/testing/procfs-smaps_rollup

   1 What:           /proc/pid/smaps_rollup
   2 Date:           August 2017
   3 Contact:        Daniel Colascione <dancol@google.com>
   4 Description:
   5                 This file provides pre-summed memory information for a
   6                 process.  The format is almost identical to /proc/pid/smaps,
   7                 except instead of an entry for each VMA in a process,
   8                 smaps_rollup has a single entry (tagged "[rollup]")
   9                 for which each field is the sum of the corresponding
  10                 fields from all the maps in /proc/pid/smaps.
  11                 Additionally, the fields Pss_Anon, Pss_File and Pss_Shmem
  12                 are not present in /proc/pid/smaps.  These fields represent
  13                 the sum of the Pss field of each type (anon, file, shmem).
  14                 For more details, see Documentation/filesystems/proc.txt
  15                 and the procfs man page.
  16
  17                 Typical output looks like this:
  18
  19                 00100000-ff709000 ---p 00000000 00:00 0          [rollup]
  20                 Size:               1192 kB
  21                 KernelPageSize:        4 kB
  22                 MMUPageSize:           4 kB
  23                 Rss:                 884 kB
  24                 Pss:                 385 kB
  25                 Pss_Anon:            301 kB
  26                 Pss_File:             80 kB
  27                 Pss_Shmem:             4 kB
  28                 Shared_Clean:        696 kB
  29                 Shared_Dirty:          0 kB
  30                 Private_Clean:       120 kB
  31                 Private_Dirty:        68 kB
  32                 Referenced:          884 kB
  33                 Anonymous:            68 kB
  34                 LazyFree:              0 kB
  35                 AnonHugePages:         0 kB
  36                 ShmemPmdMapped:        0 kB
  37                 Shared_Hugetlb:        0 kB
  38                 Private_Hugetlb:       0 kB
  39                 Swap:                  0 kB
  40                 SwapPss:               0 kB
  41                 Locked:              385 kB