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
