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Subject[PATCH 0/4] process memory footprint info in proc/<pid>/[s|p]maps v2
Andrew,

Inspired by Matt Mackall's pagemap patches and ideas, I worked up these
textual interfaces that achieve the same goals. The patches run OK
under different sized reads.

1) Add PSS into the existing /proc/<pid>/smaps:
[PATCH 1/4] maps: PSS(proportional set size) accounting in smaps

2) Create /proc/<pid>/pmaps for page granularity mmap footprints:
[PATCH 2/4] maps: address based vma walking
[PATCH 3/4] maps: introduce generic_maps_open()
[PATCH 4/4] maps: /proc/<pid>/pmaps interface - memory maps in granularity of pages

fs/proc/base.c | 7
fs/proc/internal.h | 1
fs/proc/task_mmu.c | 359 +++++++++++++++++++++++++++++---------
fs/seq_file.c | 1
include/linux/proc_fs.h | 7
mm/mempolicy.c | 2
6 files changed, 288 insertions(+), 89 deletions(-)
In this new version, offset and len are changed to use hexical numbers.

Thank you,
Fengguang
--

An example output:

# cat /proc/`pidof init`/pmaps
00400000-00409000 r-xp 00000000 08:01 1058732 /sbin/init
0 8 YRAU___ 1
00608000-00609000 rw-p 00008000 08:01 1058732 /sbin/init
8 1 Y_A_P__ 1
00609000-0062a000 rw-p 00609000 00:00 0 [heap]
609 5 Y_A_P__ 1
2b7d6e277000-2b7d6e294000 r-xp 00000000 08:01 1563879 /lib/ld-2.6.so
0 1 YRAU___ 63
1 4 YRAU___ 41
5 2 YRAU___ 55
7 1 YRAU___ 50
8 1 YRAU___ 55
9 1 YRAU___ 81
a 1 YRAU___ 57
b 2 YRAU___ 55
d 2 YRAU___ 81
f 1 YRAU___ 55
10 1 YRAU___ 43
13 1 YRAU___ 81
14 1 YRAU___ 42
15 1 YRAU___ 81
16 1 YRAU___ 56
17 1 YRAU___ 81
1a 1 YRAU___ 55
2b7d6e294000-2b7d6e297000 rw-p 2b7d6e294000 00:00 0
2b7d6e294 3 Y_A_P__ 1
2b7d6e493000-2b7d6e495000 rw-p 0001c000 08:01 1563879 /lib/ld-2.6.so
1c 2 Y_A_P__ 1
2b7d6e495000-2b7d6e4d0000 r-xp 00000000 08:01 1400920 /lib/libsepol.so.1
0 1 YRAU___ 5
1 2 YRAU___ 3
3 1 YRAU___ 5
4 1 YRAU___ 3
30 1 YRAU___ 3
2b7d6e4d0000-2b7d6e6d0000 ---p 0003b000 08:01 1400920 /lib/libsepol.so.1
2b7d6e6d0000-2b7d6e6d1000 rw-p 0003b000 08:01 1400920 /lib/libsepol.so.1
3b 1 Y_A_P__ 1
2b7d6e6d1000-2b7d6e6db000 rw-p 2b7d6e6d1000 00:00 0
2b7d6e6db000-2b7d6e6f1000 r-xp 00000000 08:01 1400922 /lib/libselinux.so.1
0 1 YRAU___ 9
1 3 YRAU___ 5
4 1 YRAU___ 4
a 1 YRAU___ 4
c 1 YRAU___ 3
f 1 YRAU___ 4
10 1 YRAU___ 3
12 2 YRAU___ 4
2b7d6e6f1000-2b7d6e8f0000 ---p 00016000 08:01 1400922 /lib/libselinux.so.1
2b7d6e8f0000-2b7d6e8f2000 rw-p 00015000 08:01 1400922 /lib/libselinux.so.1
15 2 Y_A_P__ 1
2b7d6e8f2000-2b7d6e8f3000 rw-p 2b7d6e8f2000 00:00 0
2b7d6e8f2 1 Y_A_P__ 1
2b7d6e8f3000-2b7d6ea40000 r-xp 00000000 08:01 1564031 /lib/libc-2.6.so
0 2 YRAU___ 81
2 1 YRAU___ 80
3 1 YRAU___ 81
4 1 YRAU___ 72
5 1 YRAU___ 77
6 1 YRAU___ 79
7 1 YRAU___ 73
8 1 YRAU___ 79
9 1 YRAU___ 78
a 1 YRAU___ 77
b 1 YRAU___ 72
c 1 YRAU___ 75
d 1 YRAU___ 81
e 1 YRAU___ 72
f 1 YRAU___ 78
10 1 YRAU___ 81
11 1 YRAU___ 78
12 1 YRAU___ 80
13 1 YRAU___ 78
14 2 YRAU___ 81
16 1 YRAU___ 49
17 6 YRAU___ 41
1d 1 YRAU___ 80
2a 1 YRAU___ 44
2b 1 YRAU___ 69
2c 1 YRAU___ 28
31 1 YRAU___ 79
32 1 YRAU___ 49
33 1 YRAU___ 73
34 1 YRAU___ 57
35 1 YRAU___ 67
42 1 YRAU___ 77
43 3 YRAU___ 78
46 1 YRAU___ 77
47 1 YRAU___ 70
48 1 YRAU___ 15
4d 1 YRAU___ 78
5f 1 YRAU___ 78
60 1 YRAU___ 75
61 1 YRAU___ 72
62 1 YRAU___ 67
63 1 YRAU___ 59
68 1 YRAU___ 63
69 1 YRAU___ 61
6a 1 YRAU___ 63
6b 1 YRAU___ 75
6c 1 YRAU___ 76
6d 1 YRAU___ 81
6e 1 YRAU___ 77
6f 1 YRAU___ 79
70 1 YRAU___ 44
71 1 YRAU___ 79
72 1 YRAU___ 78
73 1 YRAU___ 79
74 1 YRAU___ 46
75 1 YRAU___ 78
76 1 YRAU___ 60
78 1 YRAU___ 79
79 1 YRAU___ 81
7a 1 YRAU___ 80
7e 1 YRAU___ 41
8a 1 YRAU___ 36
8b 1 YRAU___ 72
8c 1 YRAU___ 28
8d 1 YRAU___ 21
91 2 YRAU___ 19
99 1 YRAU___ 62
9a 1 YRAU___ 76
9b 1 YRAU___ 72
c4 1 YRAU___ 80
c5 1 YRAU___ 82
c6 1 YRAU___ 81
cb 1 YRAU___ 42
cc 1 YRAU___ 79
cd 1 YRAU___ 26
cf 1 YRAU___ 12
d0 1 YRAU___ 77
d1 1 YRAU___ 38
d2 1 YRAU___ 45
d3 1 YRAU___ 66
d4 1 YRAU___ 71
e0 1 YRAU___ 52
106 1 YRAU___ 33
107 1 YRAU___ 14
108 1 YRAU___ 63
109 1 YRAU___ 57
10b 1 YRAU___ 70
10c 1 YRAU___ 63
118 1 YRAU___ 65
119 1 YRAU___ 78
11a 1 YRAU___ 69
11b 1 YRAU___ 68
11e 2 YRAU___ 62
120 1 YRAU___ 74
121 1 YRAU___ 42
125 1 YRAU___ 17
2b7d6ea40000-2b7d6ec40000 ---p 0014d000 08:01 1564031 /lib/libc-2.6.so
2b7d6ec40000-2b7d6ec43000 r--p 0014d000 08:01 1564031 /lib/libc-2.6.so
14d 3 Y_A_P__ 1
2b7d6ec43000-2b7d6ec45000 rw-p 00150000 08:01 1564031 /lib/libc-2.6.so
150 2 Y_A_P__ 1
2b7d6ec45000-2b7d6ec4b000 rw-p 2b7d6ec45000 00:00 0
2b7d6ec45 6 Y_A_P__ 1
2b7d6ec4b000-2b7d6ec4d000 r-xp 00000000 08:01 1564037 /lib/libdl-2.6.so
0 1 YRAU___ 51
1 1 YRAU___ 39
2b7d6ec4d000-2b7d6ee4d000 ---p 00002000 08:01 1564037 /lib/libdl-2.6.so
2b7d6ee4d000-2b7d6ee4f000 rw-p 00002000 08:01 1564037 /lib/libdl-2.6.so
2 2 Y_A_P__ 1
2b7d6ee4f000-2b7d6ee50000 rw-p 2b7d6ee4f000 00:00 0
2b7d6ee4f 1 Y_A_P__ 1
7fff3c81d000-7fff3c832000 rw-p 7ffffffea000 00:00 0 [stack]
7fffffffa 1 Y_A_P__ 1
7fffffffc 2 Y_A_P__ 1
7fffffffe 1 YRA_P__ 1
7fff3c9fe000-7fff3ca00000 r-xp 7fff3c9fe000 00:00 0 [vdso]
0 1 YR_____ 55
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