Re: [PATCH 1/1] lib: add version into /proc/allocinfo output

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On Tue, May 14, 2024 at 9:35 AM Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote:
>
> Add version string at the beginning of /proc/allocinfo to allow later
> format changes. Exampe output:
>
> > head /proc/allocinfo
> allocinfo - version: 1.0
>            0        0 init/main.c:1314 func:do_initcalls
>            0        0 init/do_mounts.c:353 func:mount_nodev_root
>            0        0 init/do_mounts.c:187 func:mount_root_generic
>            0        0 init/do_mounts.c:158 func:do_mount_root
>            0        0 init/initramfs.c:493 func:unpack_to_rootfs
>            0        0 init/initramfs.c:492 func:unpack_to_rootfs
>            0        0 init/initramfs.c:491 func:unpack_to_rootfs
>          512        1 arch/x86/events/rapl.c:681 func:init_rapl_pmus
>          128        1 arch/x86/events/rapl.c:571 func:rapl_cpu_online

It would be also useful to add a header line:

$ head /proc/allocinfo
allocinfo - version: 1.0
# <size> <calls> <tag>
            0        0 init/main.c:1314 func:do_initcalls
            0        0 init/do_mounts.c:353 func:mount_nodev_root
            0        0 init/do_mounts.c:187 func:mount_root_generic
            0        0 init/do_mounts.c:158 func:do_mount_root
...

This would be the same as in /proc/slabinfo:
$ sudo head /proc/slabinfo
slabinfo - version: 2.1
# name            <active_objs> <num_objs> <objsize> <objperslab>
<pagesperslab> : tunables <limit> <batchcount> <sharedfactor> :
slabdata <active_slabs> <num_slabs> <sharedavail>
pid_3               2730   2730    192   42    2 : tunables    0    0
  0 : slabdata     65     65      0
..

Pasha





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