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Enhancements to /proc/meminfo #1672

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Enhancements to /proc/meminfo #1672

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emkey1
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@emkey1 emkey1 commented Dec 27, 2021 

MemTotal:       68719476 kB
MemFree:         1210925 kB
MemAvailable:    3060908 kB
MemShared:       1210925 kB
Active:         20130316 kB
Inactive:       20031979 kB
SwapCached:            0 kB
Shmem:                 0 kB
Buffers:               0 kB
Cached:           104742 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:                 0 kB
Writeback:             0 kB
AnonPages:             0 kB
Mapped:                0 kB
Slab:                  0 kB
Swapins:               0 kB
Swapouts:              0 kB
WireCount:       4128555 kB

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emkey1 commented Dec 28, 2021

I just wanted to note that the failures above appear to be issues with GitHub at the time the checks were run. The PR compiles and appears to work as intended.

saagarjha
saagarjha reviewed Jan 4, 2022
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fs/proc/root.c
Comment on lines +45 to +48
// Stuff that doesn't map elsehwere
show_kb(buf, "Swapins: ", usage.swapins);
show_kb(buf, "Swapouts: ", usage.swapouts);
show_kb(buf, "WireCount: ", usage.wirecount);
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So one thing that concerns me is that procfs is part of the Linux kernel ABI, and adding arbitrary stuff to it may break things.

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Hmm, as I recall, I was just replicating what I saw in /proc/meminfo on a 32 bit Intel VM I setup.

Or am I misunderstanding?

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@emkey1 @saagarjha